Professional Electrician & Installer November 19 by Hamerville Media Group

TO EE FR DE RA ET TH

PROFESSIONAL

ELECTRICIAN THE BUSINESS MAGAZINE FOR THE ELECTRICAL TRADE

& INSTALLER

NOVEMBER 2019

TECHNICAL & TRAINING SAFETY STANDARD BS 7288-2016: WHAT DO THE NEW AMENDMENTS MEAN?

NEWS SPECIAL SHOWCASING THE BEST ENTRIES FROM THE ‘SAVE OUR SPARKS’ PHOTO COMPETITION

ALSO IN THIS ISSUE: NEWS & VIEWS ● CAUGHT ON CAMERA ● NEW PRODUCTS ● COMPETITIONS AND MORE…

Total Average Net Distribution: 71,632 Certification period 1 January 2018 - 31 December 2018

November 2019 Volume 35 No.10

Regulars 5 7 21 23 28 30 41 52 62 78

VIEWPOINT NEWS LETTERS ELEX SANDOWN PREVIEW MK ELECTRIC 100 YEARS THE CODEBREAKERS AURORA SPOTLIGHT MADE 2 MEASURE CAPTAIN C-TEC PRODUCTS IN PRACTICE

117

News & Views 15 Have your say on Amendment 1 of the 18th Edition

16 Electricians respond to our ‘Save

How connectivity will offer you a killer advantage in today’s digital world

Our Sparks’ picture competition

Products & Business Solutions

Digital Digest

65 How installers can benefit from the

113 We profile the characters behind the

Technical & Training 33 Appropriate use of minor works certificates

37 We learn more about new amendments to the safety standard BS 7288-2016

40 The main considerations when selecting and specifying low voltage switchgear

43 Caravan sites and common neutrals 47 Starting an installation from scratch:

rising interest in connected devices

117 Why connectivity will offer

69 The best ways to stay dry on-site

contractors a significant advantage over competitors

during the rainy season

73 How to install the Gripple Fast Trak 120 Our look at the latest website and

suspension system, step-by-step

App releases

77 Which ventilation system is best for 125 The top videos making it to the

your project?

smaller screen this month

top tips and advice

51 Hager’s Training Academy celebrates its first birthday

55 Do you need to know if your cables are leaky?

59 Metal consumer units in installations forming part of a TT earthing system Get your installation right – first time

81 The DEWALT Wall Dog anchor is put 126 Showcasing the installations that

through its paces

make our readers proud

85 Gary Fisher weighs up the pros and cons of the Bosch GDR 18V-200 C Professional Impact Driver

86 Reece Fitzhardy tests out the ProInstall-75-UK MFT from Beha-Amprobe

89 Steve Hewish is in the fast lane as he reviews Scolmore’s 20A Fast Fit Flow Connectors

EGTE podcast

91 Rounding-up the latest new products and additions to the electrical market

128 An extra helping of Caught on Camera from PE’s social channels

Competitions & Giveaways 18 WIN Get your hands on a C.K Rechargeable LED Floodlight

26 WIN Loads of great goodies are up for grabs this month

56 WIN We have a red letter day voucher worth £200 to be won

PROFESSIONAL ELECTRICIAN November 2019 3

@proelectrician

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Assistant Editor CIAN BRITTLE email: cbrittle@hamerville.co.uk Digital Manager RUTH WILLIAMS email: rwilliams@hamerville.co.uk Digital Assistant REBECCA MCGEOCH Advertisement Manager ANTHONY SCOTT email: ascott@hamerville.co.uk Assistant Advertisement Manager IAN TURNER Design CreativeUnblock.co.uk Production Assistant KERRI SMITH Group Production Manager CAROL PADGETT Distribution Manager KARL CLARK Managing Editor TERRY SMITH Publisher BRYAN SHANNON Printed by: WALSTEAD PETERBOROUGH Published by: HAMERVILLE MEDIA GROUP Regal House, Regal Way, Watford, Herts, WD24 4YF Tel: 01923 237799 Fax: 01923 246901 Email: pe@hamerville.co.uk PROFESSIONAL ELECTRICIAN is the business journal for the electrical contracting industry. It is available to the trade at leading electrical wholesalers throughout the UK. © 2019

Professional Electrician, Regal House, Regal Way, Watford, Herts, WD24 4YF

Editor’s Viewpoint

Meet the team Editor RICHARD BOWLER email: pe@hamerville.co.uk

pe@hamerville.co.uk

Monster, monster 'm going to make no apologies for dedicating this month's Viewpoint page to the very esteemed publication you're about to get stuck into. Why? Because it's our biggest issue of the year – standing at a whopping 132 pages – and (hopefully) our best. So what's in store? Firstly, we had a brilliant response to the 'Save our Sparks' safe isolation picture campaign that we ran in September. Thanks to all of those who responded and you can check out whether you’ve made our gallery by heading to page 16. The announcement of Amendment 1 to the 18th Edition regulations has certainly set tongues wagging. Judging by the comments to our Facebook and Twitter pages, our readers certainly have plenty of opinions on the subject, so now is the chance to make your points heard by contributing to the Draft for Public Comment, which is open until the end of this month (full details on page 15). Elsewhere in the issue, we've got a packed technical section with another batch of Codebreakers observations from NAPIT's technical team, advice on minor works certificates, caravan sites and common neutrals, and 18th Edition leakage current

regulations. Plus, we’ve been out on the road this month as we meet Ricky and Sam, the personalities behind The Electricians’ Guide to Everything podcast (page 113), while our product review team take the chance to test run the latest tools and solutions from the likes of Scolmore, Bosch, DEWALT and Beha-Amprobe. You’ll not want for new products this month either, as our bumper round-up section features the newest innovations to hit the shelves (starts on page 91). Finally, if you live nearby then definitely make the effort to get along to ELEX Sandown Park (8/9 November) as some very special guests will be in attendance over both days – find out who they are in our special show preview (starts on page 23). Have a good month and enjoy the issue,

Richard B owler ELINORE MACKAY

Subscriptions to PROFESSIONAL ELECTRICIAN are available at the following rates: UNITED KINGDOM 1 year (11 issues) — £30 post paid EUROPE and OVERSEAS 1 year (11 issues) — £50 post paid AIRMAIL 1 year (11 issues) — £65 post paid Image References (Adobe Stock): Pg 15 Electric vehicle © Nischaporn Pg 16 Safe isolation © Chaleow Pg 40 Which door? © 1Stunningart Pg 41 Circuit protection © Romaset Pg 47 Site survey © BillionPhotos Pg 48 Contractor © NotWaew Pg 69 Rain drops © Yauhenka Pg 77 Ventilation © Maxim Avksentiev Pg 113 Microphone © Spaxiax Pg 117 Connectivity © Sergey Nivens

PE is sad to report the death of Elinore Mackay. Elinore, who studied journalism at the London College of Printing, had worked as Editor of Electrical Review magazine for the past 16 years. Elinore enjoyed numerous holidays abroad, sharing her family’s passion for Venice and, with her partner Paul, was a frequent visitor to Spain and the Canary Islands. Elinore was a loving daughter to Iain and Tressa, sister to Rowena and Imogene, partner to Paul, and an adoring auntie to Lucinda, Oliver and Alexander. Her presence and infectious smile will be missed by all who knew her. Our condolences and best wishes go to Elinore’s family, friends and work colleagues.

PROFESSIONAL ELECTRICIAN November 2019 5

news @proelectrician

For the latest electrical news visit www.professional-electrician.com

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pe@hamerville.co.uk

Professional Electrician, Regal House, Regal Way, Watford, Herts, WD24 4YF

Apprentice of the Year 2020 open for entries The Electrical Apprentice of the Year competition, run by NICEIC and ELECSA, is now open for entries. The contest, which takes place over three stages, tests the skills and knowledge of the UK’s brightest electrical talents. Hundreds of students take part each year to be in with a chance of winning some fantastic prizes, including a £2,000 holiday voucher and the prestigious title of Electrical Apprentice of the Year. Darren Staniforth, Group Senior Technical Presenter for NICEIC and ELECSA, said: “NICEIC and ELECSA have a responsibility to work with, encourage and promote electrical apprentices. We’re committed to developing the talent of the future and are looking forward to seeing what the next group of contestants will bring to the competition. The standard seems to get better each year.” The competition continues its partnership with The Scolmore Group, with the company providing prizes for all eight finalists, including holiday vouchers, iPads, and toolbags packed with electrical accessories. Last year saw over a thousand apprentices register their interest in the competition before being whittled down to just eight finalists. 31-year-old Richard Bradley from Southport, Merseyside, was named the 2019 Electrical Apprentice of the Year, taking home the top prize. Colleges and employers are encouraged to get young apprentices to sign up. The college that produces the overall winner will receive £1,000 worth of Scolmore products, while the employer will also receive one year’s free registration with NICEIC or ELECSA. Every college that enters 20 or more students into the competition will qualify for a College Pack from Scolmore, featuring: 25 Double Sockets, 25 Switches, 25 6” Pendants and 25 Batten Holders. Apprentices can enter the competition and complete the first stage by going to: www.rdr.link/ej001

Registered Electrician hits 20,000 milestone Over 20,000 ECS cardholders have now signed up for ECS Registered Electrician status. Initially launched in October 2017, the number of cardholders achieving the recently introduced BS 7671:2018 (the 18th Edition) has steadily grown. Now over half of all ECS Registered Electricians hold the 18th Edition qualification, with more upgrading from 17th to 18th each month. The JIB established ECS Registered Electrician status to recognise those who are not only working at the industry-recognised Level 3 standard, but also have the current edition of the Wiring Regulations. To be eligible for Registered Electrician status, cardholders must meet the existing gold card requirements for an Installation or Maintenance Electrician, hold the BS 7671:2018 qualification and sign up to a Code of Professional Conduct, which includes a commitment to working professionally and responsibly. Find out more about ECS Registered Electrician at: www.rdr.link/ej002

Lux in this month Taking place later this month (13th-14th November, Excel London), LuxLive is Europe’s largest annual lighting event. With inspirational talks, case studies and practical workshops, 200+ leading brands showcasing their latest products and solutions and networking opportunities galore, this unique two-day event is one not to be missed. Delegates can also take advantage of the Smart Space zone – showcasing how lighting installations can become a digital backbone, an ‘Internet of Things’ platform utilising Bluetooth and the SR Partnertship Zone to learn how lighting can be connected to the brave new world of wireless control, data generation and the Internet of Things. LuxLive is a must attend for anyone who designs, supplies, buys or specifies lighting. To register for LuxLive 2019, simply go to: www.rdr.link/ej003

PROFESSIONAL ELECTRICIAN November 2019 7

news

For the latest electrical news visit www.professional-electrician.com

EV specialist gets plugged into Midlands facility GARO Electric has announced the opening of a new facility in Birmingham. GARO’s extensive product range – including a full selection of EV charging stations, consumer units, enclosures, components, switchgear and CEE plugs/sockets – is supplied to a large network of electrical wholesalers across the UK. Using its extensive industry expertise, GARO’s product ranges are continually evolving to respond to changes in the market. As new regulations come online, product offerings are expanded to ensure compliance and choice. The strongest and most topical example of this evolution is notable in GARO’s EV charging range. The company has been manufacturing ‘Car Heater Stations’ for the Nordic region over the last 40 years. This product allows the car owner to connect their car to an AC supply to enable the car to pre-heat oil, water and air in the main cabin of the car – a necessary function due to low temperatures in the Nordic region. GARO backs all products with significant warranties – mechanical components, MCB, RCD & RCBO are covered for five years, EV charging stations for three years and all other products for two years. For more information, go to: www.rdr.link/ej004

@proelectrician

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Professional Electrician, Regal House, Regal Way, Watford, Herts, WD24 4YF

Red Arrow Trading rebrand promises ‘transformed quality and service’ Michael Crossley, previously MD of Crompton Lamps, has acquired Red Arrow Trading and is transforming the business into a streamlined, quality-focussed manufacturer and distributor fit for today’s marketplace, with a key focus on lighting. After rebranding as Red Arrow Electrical Distribution (RAED) in May this year, the business’s 4,000+ customers can still expect competitively priced products, but they will now also benefit from superior quality and much faster service delivery. Customers will now enjoy easier access to RAED’s 3,000+ strong product range, as well as an exciting new selection of lighting products planned for 2020. Michael said: “We are in the process of integrating ISO9001/14001 accreditation and streamlining our offering. By removing some trading items, we can develop our key area of

strength: lighting. This means we are now able to offer all our customers a full lighting design service.” Plus, with a complete overhaul of both stock management and delivery across the brand, RAED can ensure much faster and more reliable delivery services. But it’s not all change at Red Arrow Electrical Distribution. The website’s URL, contact details and core staff have remained the same – minimising any potential disruption for customers.

news @proelectrician

For the latest electrical news visit www.professional-electrician.com

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Professional Electrician, Regal House, Regal Way, Watford, Herts, WD24 4YF

NAPIT raises over £500 for injured installer A charity event held by NAPIT for all staff and business partners from NAPIT Insurance for its member Matt Carter, who fell from a ladder whilst on a job in December last year, has raised £561.70. Matt Carter, an electrician from Bakewell, fell five feet before landing on his head, causing life-changing injuries. Since the accident, Matt’s family and friends have had to fight for him to receive the care he needs. He is unable to live at home with his wife and two children – two boys aged seven and eight – and is now at the STEPS rehabilitation centre in Sheffield. The event was named ‘Don’t worry be hippie’ and began with a laughing yoga team building exercise. Staff paid a small fee to take part in activities including tarot card reading and henna tattoos, as well as getting a chance win on the tombola and raffle. The raffle offered employees a chance to win prizes like two paintballing vouchers worth £300 each, two Ecclesbourne Valley Railway vouchers, two vouchers for access into Darwin Forest in Matlock, as well as three prizes of Thornton’s Chocolate and five one-day’s annual leave. Mike Andrews, NAPIT Group Chief Executive, commented: “There is always an astounding effort from staff at NAPIT when fundraising for charity. This year was no exception and was particularly important to us as we are helping one of our own. Matt Carter has been a NAPIT member for seven years, and we were all moved to hear about his unfortunate accident at work.” Matt’s JustGiving page is still open, so if you wish to read more about his story, see how his recovery process is going, or to donate, please visit: www.rdr.link/ej005.

KNK UK publishes Code of Conduct The KNX UK Association has published a Code of Conduct that assures end users, developers and consultants of members’ competency through compliance with this new Code. In addition to stipulating the general principles of good conduct, best commercial practice and fair dispute resolution, the new Code pre-empts issues that could arise from the growing use of custom – and often proprietary – software wrappers that could restrict the client’s freedom to further develop the software foundations of their installation. The Code draws on the cumulative experience of integrators working at the top of their industry, developing and deploying ‘Best Practice’ throughout a broad range of KNX products and budgets. It provides a gold standard definition of good conduct for designers and integrators and clarifies principles of best practice to all professionals. To see the KNX UK Code of Conduct for yourself, visit: www.rdr.link/ej006

10 November 2019 PROFESSIONAL ELECTRICIAN

Hultafors Group acquires Custom LeatherCraft The Hultafors Group, which owns Snickers Workwear, has expanded its product portfolio with the acquisition of Custom LeatherCraft. Known as CLC in the USA and Kuny’s Leather in Canada, it is the leading brand in the United States since 1983, and is North America’s premier designer, developer and marketer of ‘work gear’ for professional tradesmen and women. The product range includes softside tool carriers, nail bags, tool pouches, plus personal protective equipment. Peter Dumigan, MD of the Hultafors Group UK, said: “We are delighted with this acquisition given the CLC work gear range complements the Snickers Workwear, Hellberg Safety, Hultafors Tools, Solid Gear and Toe Guard safety footwear product portfolios perfectly. We will now be able to offer the discerning tradesman and woman an even more extensive range of top quality, premium brand products, ideally suited to the work they do on-site.”

READERLINK 005 씰

NEWS SPECIAL

HAVE YOUR SAY ON AMENDMENT 1 The Draft for Public Comment, which consists of changes to Section 722 – Electric Vehicle Charging Installations, is open until the end of this month. he IET has announced that the Draft for Public Comment, relating to Amendment 1 to BS 7671:2018, is now open. The Amendment, which follows advances in technology to enable a more practical solution for electric vehicle charging installations and is due to publish in early 2020, will be free to view on the IET and BSI websites, and will form part of a consolidated version of BS 7671 following the next major amendment, expected in 2022. Dan Palmer, Associate Director of Committees at BSI, said: “The UK is leading the electric revolution with ambitious plans to deliver cleaner air and a better environment by committing to 50% of new car sales to be ultra-low emission by 2030. The built environment and electrical

infrastructure is the first step on the journey to making these green plans possible. “BS 7671 Requirements for Electrical Installations (the IET Wiring Regulations) has been updated in Section 722 to make the installation of electric charging points quicker, easier and less costly. It will help to make electric charging common-sight on UK streets and fuel the growth of electric car usage.” Mark Coles, Head of Technical Regulations at the IET, added: “Technical committees have been able to address a new opportunity for electric vehicle charging installations that provides a practical solution benefitting industry, consumers and Government alike, to help the UK lead the way in the roll-out of infrastructure to support the electric vehicle revolution.

“This update to the IET Wiring Regulations puts the electrical industry at the forefront of driving technological innovation to ensure the installation of practical, safe charging points that are accessible to all.” He continues: “By producing Amendment 1 to BS 7671:2018 as a stand-alone, free-to-view document, this updated Section 722 will reach industry much quicker than a full, consolidated amendment would allow, enabling installers to take advantage of BS 7671:2018+A1:2020 as soon as possible.” The DPC is available on BSI’s website and industry is invited to view the draft and submit comments by the deadline of November 30th. More information can be found at: www.rdr.link/ej007

PROFESSIONAL ELECTRICIAN November 2019 15

NEWS SPECIAL

PE’s photo competition, in conjunction with Super Rod, helps to further promote safe isolation in the electrical industry.

SOS CAMPAIGN PROVES A SAFE BET ollowing last year’s shocking research into the state of safe isolation practices in the UK, Super Rod launched a national safety awareness ‘Save Our Sparks’ campaign earlier this year to get more installers thinking about their health and safety at work. The ‘Save Our Sparks’ campaign – and

the safe isolation research – were both inspired by Michael’s Story. Michael Adamson was just 26 when he died after coming into contact with mains voltage power in an entirely preventable accident at work in August 2005. The findings of the HSE’s investigation into Michael’s death found that there was no lock-out kit used, no voltage tester used and that the

electricians working on the site had inadequate pliers in terms of leverage and insulation. To support the campaign, we asked you to send your pictures of safely isolated equipment to us throughout September, a selection of which are included on these pages. Well done to all of those that took part!

Damion Evans Jinx

Joe Connor

16 November 2019 PROFESSIONAL ELECTRICIAN

Kurtis Lee

Lewis Mitchell

Nick Richard Baldwin Suzanna May Blakeley-Monk

Richard Cockerline

Roger Smith

RS Services

Steven C

PRIZE DRAW

5 LED FLOODLIGHTS W I UP FOR GRABS! N One of five C.K Rechargeable LED Floodlights could be yours this month. .K has expanded its work light range with the C.K Rechargeable LED Floodlight (T9715R). It has a powerful, super bright flood beam, versatile clamp mechanism and 360° swivel head to offer complete flexibility when working in awkward areas. The 15W flood beam offers a wide range of 120° and is a high performance 1,300 lumens SMD LED. It also has a battery life of 2.5 hours on high power and 7.2 hours on low power, with a battery charge indicator as standard.

For more information on the newly-released C.K Rechargeable LED Floodlight, go to: www.rdr.link/ej008

HOW TO ENTER To be in with a chance of winning a Rechargeable LED Floodlight from C.K, simply go to: www.rdr.link/ej009 and fill out the contact form. Five winners will then be chosen at random. Deadline for entries: 10/12/2019. Usual T&Cs apply.

18 November 2019 PROFESSIONAL ELECTRICIAN

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Professional Electrician, Regal House, Regal Way, Watford, Herts, WD24 4YF

Letters PE readers share their thoughts on the big industry-related issues.

A picture tells a thousand words Dear PE It is with great interest that I came across your recent ‘Save Our Sparks’ picture campaign (see News Special – pages 16 & 17) and felt I had to respond.

I’m a part-time lecturer/technician at Yeovil College and we’ve found a very effective way of teaching our sparks about safe isolation. Although I can take no credit for devising this acronym, I’ve attached a picture that we have used to make A5 tags for the students to take away, and to act as a constant reminder to them.

Dear PE In response to the ‘Save Our Sparks’ picture campaign you’ve been running with Super Rod, I thought I’d share a little notice that I keep up in the office as a reminder. Best regards, Nick Blakeley

The acronym in question is ISOLATE: I – Identify the circuit to be isolated and the point of isolation S – Seek permission to turn off O – Open Circuit L – Lock off and label A – Approved voltage indicator to GS38 and proved on a proving unit or known live source T – Test L-E, L-N, N-E (10 tests on 3 phase) E – Ensure the indicator is still working by reproving Picture courtesy of Jon Staple and Yeovil College

Kind regards, Jon Staple

PROFESSIONAL ELECTRICIAN November 2019 21

ELEX2019

Sponsored by

YOU CAN BE CERTAIN WITH CERTON! Electricians are well known for their technological creativity and after launching at ELEX Manchester earlier this year, CertOn – the brainchild of electrician Boyd Goulden – continues to make waves in the industry. The system, which offers a unique way of issuing and retrieving important documents and certification, is a paperless document storage solution that helps trade professionals, home owners, housing associations, developers, landlords and maintenance teams to upload and access all important property documents instantly. Using an App and website portal, users can manage all their important property documents, such as electrical and gas certificates, O&M manuals and asbestos reports – just about any document required for a building. CertOn links any PDF/JPEG documents to a unique QR code specific to the building. If you spot the CertOn QR code, you'll know

that previously signed off and certified documentation and manuals are instantly ready to view. Furthermore, Schneider Electric is lending its weight to the CertOn offering by running a discount promotion on its Partner Portal. Available until December 31st, all end users need to do is sign up to the portal (www.se.com/uk/en/) and they’ll be eligible for a whopping 50% discount on available CertOn products. Visit CertOn on Stand C40 to chat more about this innovative new idea

ENTER HAMILTON’S ‘APPIO HOUR’ PRIZE DRAW Hamilton will be launching its new Wi-Fi wireless audio range at ELEX, and to celebrate the company is giving away a selection of its new products during ‘Appio Hour’ at midday each day of the show. Expanding its audio offering to include four new wireless products, the winner of the FREE prize draw will receive Hamilton’s new WSA50 Wireless Streaming Amplifier and two 80W ceiling speakers. Second prize is an Appio Wireless Speaker, and third prize is an Oyster Wireless Audio Receiver. Those wishing to enter the free prize draw must drop their business card in a white top hat on the Hamilton stand at ELEX Sandown. Each day at ‘Appio Hour’ (12pm noon) the prize draw will take place, alongside an introduction to the new wireless audio range. For more information and to see Hamilton’s new wireless audio products, visit Stand C26

C.K TOOLS SET TO LIGHT UP SANDOWN C.K will be exhibiting at Sandown this THE NUMBER R 1 HANDT HANDTOOL month and the stand promises to be BRAND FOR ELECTRICI ELECTRICIANS better than ever, showcasing a fantastic collection of innovative new products such as the C.K Magma Pro Toolcase Plus and the C.K Gloworm Cable Router. On top of that, the C.K stand is offering some superb “exclusive show deals” available on the day, such as a free carry case (worth £35) with every C.K Mighty Rod Pro 12m cable rod set purchased – a product which provides 100% splinter-proof results every time. Or, the fantastic 5pc Dextro screwdriver set – an electrician’s ‘must have’. The C.K team will be conducting hands-on demonstrations of its innovative products, such as the Armourslice, which guarantees a perfect cut on SWA cable in half the time of traditional methods. Or, the C.K Automatic Wirestripper, a must-have for every toolbox, cutting and stripping T&E cable in a fraction of the time. In the run-up to the show, keep an eye out for C.K’s exciting competition on Facebook and Twitter to win a fantastic C.K Electrician’s Premium Tool Kit (595003). *

Visit the team at C.K Tools on Stand F2 at ELEX Sandown

S Y A W A E V I ] G [

GIVEAWAYS

HAMILTON LITESTAT

IDEAL INDUSTRIES EMEA

Hartland G2 Contractor Packs Hamilton Litestat’s Hartland G2 is the ‘second generation’ screwless faceplate that upgrades its Hartland box fix. The new push-to-fit face plate is available in six plate finishes, with inserts available in White, Black and Quartz Grey. The range offers both Grid and EuroFix options, as well as 2.4A Dual USB sockets as standard, plus 4.8A Type A and C output connectors, allowing for both smart phone and device charging with ease. Hartland G2 also comes with a fit & forget 25-year product guarantee. This month, we have 5 x contractor packs – worth £100 each – to be won. To enter the to win draw, visit: www.rdr.link/ej013

FT-45 Bundle We have two FT-45 bundles up for grabs this month from Ideal Industries EMEA, consisting of the FT-45 Modular Plug Crimp Tool with a pack of both 25 Cat 5e and 25 Cat 6 unshielded Feed-Thru RJ-45 modular plugs. The versatile tool is capable of crimping IDEAL feed-thru, standard, shielded and unshielded connectors and includes 568A and 568B wiring schemes marked on the tool for ease of use. The heavy-duty cutting blade will last for over 2,000 cuts and is replaceable, allowing users to control costs by easily maintaining the crimp tool, instead of purchasing a new one. By using the industry-leading products in the FT-45 solution, installers can benefit from a completely new take on the traditional, time-consuming RJ45 assembly and crimping process. With FT-45, the process is to win simplified and the success rate of terminations is increased. To win one of the two bundles on offer from IDEAL Industries, visit: www.rdr.link/ej014

HELLBERG SAFETY

TIMEGUARD

SAFE 3 Visor and Hearing Protectors The SAFE 3 headset from Hellberg Safety can be used as a stand-alone visor carrier or together with SECURE hearing protection for multiple tasks on-site. The robust browguard and visor protects from flying particles, is lightweight, comfortable and fully adjustable to various head sizes. It is designed to offer the wearer high protection and comfort. The carrier is developed together with the hearing protector, fits perfectly and holds the visor firmly in place. We have 5 x SAFE 3 Visor and Hearing Protectors up for grabs this month. To enter the draw, visit: www.rdr.link/ej015

Rust Resistant LED Floodlights Rusty fittings, casings, screws and brackets on outdoor lights and tell-tale rusty stains on painted or rendered walls are no longer an inevitable result of the British climate. Timeguardâ&#x20AC;&#x2122;s rust-resistant ranges beat the elements and are the essential choice for coastal and damp areas, corrosive environments, or when you want to fit ground-up lighting. They maintain their good looks for longer because all the metal parts are made of high-grade stainless to win steel, from the brackets to the screws and even internal circuit board components. 10W, 20W and 30W floodlights with integral PIR detectors are available, as are slave lights to connect in parallel. This year, Timeguard has added wide-angle floodlights to the rust-resistant line-up. Another great feature is the curved stainless-steel panning bracket. No longer do you have to fix floodlights flat to the wall: this clever curved bracket enables you to pan as well as tilt. This month, weâ&#x20AC;&#x2122;ve got a rust-resistant floodlight with pan and tilt bracket to give away to five lucky readers. To enter the draw, visit: www.rdr.link/ej016

5 to win

…OF CUSTOMER SERVICE In the year of MK Electric’s 100th anniversary, Emma Segelov, EMEA Marketing Operations Manager, looks at how the brand has supported its customers over the past century and how it plans to continue this well into the future. In 1982, MK Electric established the UK electrical industry's first technical services helpline, providing a lifeline for electrical contractors who needed help on-site. A few years later, it was one of the first companies in the UK to achieve BS5750 accreditation for its quality assurance systems at every site. Today, the Technical Services team provides support and advice to thousands of customers across the UK and Middle East, taking calls and emails from wholesalers, contractors, consultants, facilities managers and end users on a daily basis. However, this focus on customer service is not just reactive, it’s proactive, too. In order to provide products which actually meet the needs of its customer base, regular customer focus groups are held to gather feedback from the individuals who use MK products every day. For example, research undertaken amongst contractors, specifiers and end users, found that the risk of product loss or damage, as well as the

mkelectric.co.uk

difficulties of storing products on-site, were a recurring challenge, with many expressing that they would prefer not to install the decorative frontplate until a later stage in order to guard against paint splatter, plaster abrasions, knocks and scrapes on-site. As a result of this invaluable feedback, MK Electric developed its MK Dimensions range of screwless wiring devices (pictured above). A two-part product solution, MK Dimensions offers its two individual components as completely separate parts with individual order numbers. This means that whilst the functional module can be installed when required, the final frontplate can be ordered separately and, most importantly, installed much later – even just before client handover – reducing the risk of frontplate loss or damage. What’s more, MK Dimensions functional modules are also supplied with a recyclable, protective coverplate, ensuring the device meets British Standards prior to the fitting of the final

frontplate. This means it is fully operational, allowing work to continue as usual. From the very beginning, MK Electric has listened to the needs of the market, its customers and end users, and reacted accordingly – whether that be via its technical support team or its feedback driven product solutions – and it is this customer focus which will keep it at the front of the market for the next century.

For more information, visit: www.rdr.link/ej017

THE

CODEBREAKERS ASH ALLUM: This image is of some type of junction to extend the kitchen ring. What’s going on? From looking at the photo and the sizes of conductors, I’m assuming there is a ring final circuit and a lighting circuit/two-way/switch drop being extended. It’s a fundamental requirement of BS 7671 that an installation can withstand mechanical damage (given its environment), and that joints and terminations are made in an adequate enclosure. There is also a possibility that some of these types of connectors will leave access to live parts. In this scenario, the connectors are not rated for mechanical damage and the conductors are not supported against strain. There is a possibility that this kind of poor installation method could cause arcing at the joints in the conductors. When a sheathed cable of any type is stripped back, the exposed single insulation must be protected against mechanical damage; this can only be achieved by taking it into a suitably rated enclosure. Even though this appears to be a roof space, cable containment is still important and the cables, in this case, could benefit from some support or containment, to ensure conductors are not able to flex. These cables have solid conductors and excessive flexing can lead to cracks in the conductors, which can cause arcs. The Observations, Regulation infringements and Codes applicable to this observation would be. Strain on cable terminations

522.8.5, 526.6

Joints in conductors made outside of an enclosure, connectors have insufficient mechanical protection

134.1.1, 134.1.4, 522.6.1, 526.5

C2 C2

Basic insulation not taken into an enclosure

134.1.1,526.8

Possible access to live parts – conductor connectors

416.2.1, 651.2 (i)

C1 FI

Possible damage to solid conductors through flexing

522.8.5

C2 FI

CM ELECTRICAL SERVICES: We spotted this during a recent inspection – red sleeving over the earth, then the earth was put in the live thermal, the neutral put in the earth and the live was put in the neutral. It’s obviously been like this for years, and the customer says it’s always worked fine! This has the potential for serious injury. If a Class I item of equipment with earthed exposed conductive parts were to be used here, the casing or exposed conductive parts could very well be at live potential, which could mean that anyone in contact with it and the general mass of earth could receive a shock, proportional to the potential difference between the exposed conductive part and the general mass of earth. It’s very unlikely there is an RCD supplying the circuit, as a correctly operating one would have identified the supply current leaving the RCD being different to the returning current, as the return in this instance is the cpc. Without RCD protection, the circuit will most likely always appear to be normal, as the cpc and neutral in a TN-C-S (PME) earthing system, are connected in the service head, and at the star point of the generator/transformer for a TN-S or TT installation. It wouldn’t become apparent there was an issue until the correct polarity checks were carried out. There will also be current-carrying capacity issues with the cpc, now being used to carry neutral current, as it is not sized for this, and has a potential for overload/overheating This is a simple enough fix, but the potential for danger from what is likely a DIY install is very high. I would be concerned with the rest of the installation, especially if there are signs of alterations, additions and DIY work. The use of red sleeving, which is obviously from an off-cut of cable and not really sleeving as we would normally use, is also a flag that this is very likely a DIY install from before 2005, given the cable colours. The Observations, Regulation infringements and Codes applicable to this observation would be. Incorrect cable identification for cpc

514.4.2

Incorrect polarity, potential for electric shock

643.6 (iii)

Cpc used as a neutral conductor and is underrated for currentcarrying capacity

523

GET THE BOOK AND CRACK THOSE CODES! New for BS 7671:2018, NAPIT’s EICR Codebreakers publication is purpose-written to aid contractors, inspectors and clients, and now includes updates to align with the 18th Edition of the wiring regulations. A 2018 Professional Electrician & Installer ‘Top Product’ award winner, the book is the perfect technical aid for electrical professionals and their customers.

30 November 2019 PROFESSIONAL ELECTRICIAN

Need help with cracking those all-important EICR codes? Every month the technical team at NAPIT will be studying your latest ‘Caught on Camera’ photos and offering advice on the next steps, should you find a similar installation. If you want the team at NAPIT to help crack your codes then send your pictures through to us at: pe@hamerville.co.uk

G GIBBON: If you need to run a live and neutral feed out, along with a switch line, and you’ve only got T&E cable to hand, an ingenious way is to forget about the earth and use it as a neutral instead. Don’t forget to rip some lengths of black insulation off some cable and slide it on for good measure. Unbelievable! Granted, the use of the cpc as a switch live or any other live conductor is extremely dangerous. What we also have to look at here are the exposed live parts, due to the heavily damaged junction box, strain on terminations and inadequate joints. It is a fundamental requirement that a cpc is carried to every point and accessory in an installation, in accordance with Reg 411.3.1.1. By using the cpc as a live conductor, there is no protection for the circuit, which may become modified elsewhere, if it is not known the cpc is now a live conductor. This has the potential to cause serious injury and is not acceptable for any reason. The cpc in a T&E cable is not sleeved with basic insulation, because in normal scenarios it is not designed to carry load current, only fault current for a short duration. When using the T&E cpc as a live conductor, which will now carry normal design current, the fundamental requirement of BS 7671 to provide basic protection has been removed. The damage to the junction box is extensive and has left access to live parts, with strain on conductors which could lead to an even more dangerous situation. In a loft, or other areas accessible by ordinary persons, this damage could quite easily have a fatal outcome.

WILLIAM MARTIN CULLETON: I found this while fault-finding on a kitchen lighting circuit. Who put that joist in the way? They’re lucky not to have also drilled through the ring main! This is exactly the reason you should mark out where recessed lights and equipment are going to be located, and then check that there are no obstacles. If there are, re-measure and re-mark. Before BS 7671 is looked at, I have to mention that Building Regulations will have also been breached here, and this should be noted on the EICR as an observation only. Not only has structural integrity been diminished, but the threat from thermal effects, directly applied to the combustible joist, is now very high. If we look at BS 7671, any wiring system must be designed and installed to take account of its environment. Destroying a support joist and putting a recessed light against it in this way infringes BS 7671. It is very likely that the heat generated by the recessed light in this scenario will not be dissipated as required by its design, which is also something we need to take account of. As a general rule, unless the manufacturer states a minimum distance from a joist, Regulation 422.3.1 should be adhered to. This is not always possible, especially for recessed lights, so that is why manufacturers’ distances should be used. As a general rule, these will be between 50-100mm from a joist but, as stated, manufacturers’ instructions should be used in each case. The Observations, Regulation infringements and Codes applicable to this observation would be. Failure to install equipment correctly and take account of manufacturers’ instructions.

134.1.1, 134.1.5

Failure to install equipment, taking account of thermal effects

134.1.1, 422.3.1, 651.2 (ii)

Possible Building Regulations infringed – Structural integrity of joist impaired, recommend structural report be carried out Possible Building Regulation infringed – Increased risk of fire from the proximity of electrical equipment to a supporting joist, likely to generate heat while in use, recommend relocation

To find out how you can order your copy of the updated 18th Edition Codebreakers publication, priced at just £19.99 (non-members) or £17.99 (NAPIT members), visit: www.rdr.link/ej018

Technical & training

TAKING YOU STEP BY STEP THROUGH PROCEDURES AND REQUIREMENTS FOR ELECTRICAL INSTALLATIONS

Appropriate use of Minor Works Certificates Existing ring final circuit

he aim of this article is to provide guidance for the electrical contractor on the appropriate use of a Minor Electrical Installation Works Certificate (MEIWC), when carrying out an addition or alteration to an existing final circuit.

Introduction Where an addition or alteration is made to an existing final circuit, as shown in Fig 1, it should be verified that the work carried out complies with BS 7671 and does not impair the safety of the existing installation (Regulation 641.5 refers). In such circumstances a MEIWC may be used as an alternative to an Electrical Installation Certificate (EIC), although, Regulation 644.4.201 requires that a separate minor works certificate is issued for each circuit worked on.

Fig 1

Addition of a new socket-outlet

Addition of a socket-outlet on an existing ring final circuit

carrying out the replacement can verify that the replacement device satisfies the requirements of BS 7671, particularly, for the safe disconnection of the circuit under fault conditions.

For any of the options previously described, the minor works certificate may be used as it makes provision for the skilled person undertaking the work to record the relevant inspection and tests, as shown in Fig 2, required to verify that the work complies with BS 7671 and does not impair the safety of the existing installation.

For example, it may be the case where the observation on an Electrical Installation Condition Report (EICR) identifies that the

A MEIWC must not be used to certify the installation of a new circuit, even if the circuit supplies only one point (as defined).

PART 4 : TEST RESULTS FOR THE CIRCUIT ALTERED OR EXTENDED (where relevant and practicable) Continuity

Protective conductor (R1 + R2): ( 1 )

N/N: (

) M1

L/E: (

Ring final circuit (loop values) L/L: (

It should be noted that before any addition or alteration is made, Regulation 132.16 requires the adequacy of the existing installation is to be assessed, including the earthing, bonding and maximum demand, for the altered circumstances. Replacement of a single protective device A MEIWC may be issued to certify a ‘likefor-like’1 replacement of a single protective device, or a single item of switchgear containing a single protective device. In addition, a MEIWC may also be issued for the replacement of a device that is not considered ‘like-for-like’, but only in circumstances where the skilled person 1

Insulation Resistance** Polarity

L/L: (

)

Satisfactory: (

)1 )1

or R2: ( cpc/cpc: (

1 ) Test Voltage: M (

Earth fault loop impedance Zs

(

)1 )1 ) DC )1

**Where an agreed limitation is used provide details on a separate page and append to the certificate.

Fig 2

Test results for circuit altered or extended

measured earth fault loop impedance (Zs) for an existing circuit protected by a Type C circuit-breaker exceeds the maximum value permitted by BS 7671. Such that the remedial work required may involve replacing the existing circuit-breaker with an RCBO, or a Type B circuit-breaker or if possible, de-rating the device (for example replacing a 10 A protective device with a 6 A device).

Replacement of switchgear incorporating more than one protective device The replacement of an item of switchgear containing more than one protective device, such as a two-way (or more) consumer unit, is not considered minor work. Such work requires a greater degree of inspection and testing, including many more relevant parts of the installation, than would be required for work carried out on an existing single circuit.

The term 'like-for-like' is used to indicate that the operating characteristics of the replacement device are the same as for the original device.

PROFESSIONAL ELECTRICIAN November 2019 33

Technical & training For these reasons, the Notes For Recipient, printed on the reverse of NICEIC and ELECSA MEIWC (which are based on the notes contained in Appendix 6 of BS 7671) state that the certificate is not suitable for certifying the replacement of a consumer unit or distribution board, for which an appropriate Electrical Installation Certificate (EIC) should be used. Further guidance on completing Certificates and Reports, is given in the NICEIC and ELECSA publication: Inspection Testing and Certification. Replacement of an RCD Similarly, where an existing RCD needs to be replaced, for example, because of a failure of the test button, the replacement may be certified using a MEIWC. However, the requirements of Regulation 132.16 should be satisfied before the work is carried out. For example, prior to the replacement of an RCD that is used for the purposes of providing fault protection for the final circuit(s) connected to a TT system, as shown in Fig 3, the condition and adequacy of the Earth electrode, earthing conductor and protective bonding

conductors should be verified as a minimum using appropriate test methods. Replacement of an accessory Although a minor works certificate may be used to certify the replacement of an accessory, for example, a wall switch or a socket-outlet on a ‘like-for-like’ basis, such work would generally fall under a maintenance regime and so the client, such as a local authority, can choose to use their own documentation instead. However, where this is the case, the safety declaration, installation details, and the inspection and test results recorded on the client’s documentation should be no less comprehensive than would be included on the MEIWC. A copy should also be retained by the contractor. Where a MEIWC is used to certify the replacement of an item of equipment, a separate certificate would be required for each circuit affected. It is therefore acceptable to issue a single certificate where more than one item of equipment is replaced on an individual circuit, but should not be used to certify modifications carried out on different circuits.

Circuity protective conductors

Isolator switch (where fitted)

Metal water pipe

Replacement of protective bonding conductors The installation or upgrading of main or supplementary protective conductors can be recorded on a minor works certificate, however, where protective bonding is carried out in more than one location, such as an out building or garage detached from the main installation, a separate MEIWC should be issued for each location. Summary The use of a MEIWC is only applicable for work carried out on an existing circuit and should not be used for the installation of a new circuit or the replacement of a consumer unit and/or distribution board. Before any addition or alteration is made to an existing circuit the adequacy of the existing installation must be assessed including that of the earthing and bonding arrangements for the installation and the maximum demand for the altered circumstances.

Publications covering this and related subjects are available from

Metal gas pipe

Consumer tails Label

10 mm2

Main Switch

Gas Meter 100A

Earth electrode

Fig 3

•

Water service pipe

Gas service pipe

www.shop.niceic.com/elecsa

Dual RCDs providing fault protection for existing final circuits

For other guidance and publications please see the NICEIC website. For information about the NICEIC Approved Contractor or Domestic Installers schemes, visit www.niceic.com or call 0333 015 6626

www.niceic.com 34 November 2019 PROFESSIONAL ELECTRICIAN

TECHNICAL & TRAINING

RCD UNITS: BY THE BROOK With further amendments to the safety standard BS 7288-2016 due this month, we speak to Giles Lillistone of GreenBrook Electrical about the crucial additions to the regulations.

he new standard requires, in simple terms, both Type A RCDs and Type AC RCDs. Type A RCDs can detect pulsating DC currents and surge faults that Type AC RCDs may fail to detect. This is the first time that there is a classification of the RCD type in the standards, with this being the first

update to the regulations since the 1990 iteration. Giles explains: “In distribution boards, (RCDs) have been classified like that for a number of years. So, in a distribution board, you’d fit a Type A RCD or a Type AC RCD, depending on what you were trying to protect in the circuit. If there was electronic equipment in the circuit, you’d be looking to fit a Type A RCD, whereas if it’s, for example,

resistive loads, you’d be looking to fit a Type AC RCD.” According to Giles, GreenBrook is the first to ensure its PowerBreaker Socket RCD products adhere to the latest regulations, as he states: “Up until the beginning of this year, we’d seen very little movement in any market of anyone bringing out compliant-tested parts. Our first products are already out on the

PROFESSIONAL ELECTRICIAN November 2019 37

TECHNICAL & TRAINING

market.” He also notes: “It appears there are not many test houses out there at the moment that are capable of doing the whole test package for the updated regulations,” suggesting a serious lack of urgency in the industry. It was as soon as the standards were published that GreenBrook began its process of becoming compliant, as Giles explains: “We actually sit on the technical committee so we were contributing to those standards. Our main realisation when we first started out on this process was that the new standards had considerably beefed up the requirements for the robustness of the product, certainly from the electrical point of view.” He adds: “We’re investing tens of thousands of pounds in testing these products to the appropriate standard.” More robust products These ‘beefed-up’ requirements meant “mechanisms and components had to withstand much higher voltages and overload currents.” This means that, moving forwards, products are required to be far more robust. Therefore, there is an added – and welcome – focus on safety and protection. Obviously, this requires a far more rigorous testing process. Giles expands: “All these products have to be tested by an independent testing house to the standard. To pass all the different sections of the testing process,

we’ll have to test something in the region of 100 units. It was quite a surprise when we realised how many units we had to give over! It now tests every combination, whereas previously you could test one or two units and translate the results across to other combinations.” Updated testing process This is an important step for the industry to have the testing process updated, and it actually goes above and beyond what is required. Giles says: “The process has fairly onerous overload testing, something you’d usually see for an RCD at the distribution board level. It is assumed at a distribution board that, if you get a short circuit, it could draw all the available current from the node at the substation – usually in the region of 1,500A at peak. The same rules are now applying across the board for all RCD units – both socket and module.” Pulsating DC currents are created from faults in modern electronic equipment such as EV car chargers, solar panels, multi-media equipment, USB sockets, phone chargers and smart speakers etc. The new standard requires much more rigorous testing of the RCDs with high voltage and short circuit tests. Products that adhere to this standard have a more sensitive/stable trip window so are a much safer defence against electrocution. Using

38 November 2019 PROFESSIONAL ELECTRICIAN

socket RCDs at the point of source also helps to stop nuisance tripping further up the circuit. Another visible change to this standard is the additional markings on the front plate and the coloured flag indictors – which now must be green and red. GreenBrook places these indicators within the window, in keeping with its aesthetically-designed front plate. A red flag shows the device is on with a live supply to the appliance. A green flag shows the device is safe with the supply to the appliance switched off. It’s what’s inside that counts Crucially, this is not something that has been publicised enough yet – so GreenBrook wants to ensure that everyone is aware of the updated regulations. Too much of a focus appears to have been placed on the aesthetic change, when the crucial updates are to the “internal workings, the ruggedness of the product, having it tested and classified under the right headings.” Giles concludes: “It’s what’s inside the product that counts; it’s more than just a green flag.” For more information on GreenBrook’s range of compliant PowerBreaker RCD products, go to: www.rdr.link/ej019

TECHNICAL & TRAINING

L-V SWITCHGEAR: MAKE A SOUND SELECTION Gary Parker, ECA Senior Technical Engineer, looks at the different types of protective devices and the main considerations when selecting and specifying low voltage switchgear.

ow voltage switchgear forms a vital part of the link between generation, transmission or transformation equipment on one side and the lighting, motors and information technology on the other.

The right choice There are many devices designed to interrupt power, from a source to a load, and they each have different functions and characteristics. Selecting the right device for the right application is, therefore, extremely important. Miniature Circuit Breakers (MCBs) are probably the most common form of protective device used in electrical installations. Their use and characteristics should be well known and familiar to most professionals. Moulded Case Circuit

Breakers (MCCBs), or simply circuit breakers, are commonly used for sub-main distributing loads in switchgear. The variety of sizes available means they can be used in many circumstances where other forms of devices would be unsuitable. Advances in the ‘intelligence’ of these devices is enabling building managers to remotely monitor loads and better manage energy use. Many MCCBs have a variety of adjustable settings that can assist in providing protective device selectivity throughout an installation. MCCBs are often found in installations where the maximum prospective short circuit currents are potentially very large. Many manufacturers now produce MCCBs with capacities in excess of 100 kA. Where the downstream protective device is a fuse, many adjustable CBs will need to have an I2t on/off function,

40 November 2019 PROFESSIONAL ELECTRICIAN

also referred to as an in/out. ‘On’ results in an inverse time delay characteristic that most closely resembles time/current characteristics of fuses. ‘Off’ results in a constant delay characteristic that coordinates best with thermal-magnetic and electronic trip circuit breakers. Air Circuit Breakers (ACBs) are often used at the origin of larger installations, due to their rating and ability to withstand high levels of faults. One consideration when selecting ACBs is the option of fixed or withdrawable type. Fixed ACBs are generally less expensive than the withdrawable variety but can be more challenging to maintain and isolate safely. A withdrawable ACB will not require isolation of the upstream protective device as there is no need to access terminals or connections.

Where protection is offered by an ACB, this is usually incorporated in a separate protection module. These modules are usually plugged into the ACB and eliminate the need for external protection systems. Motor Protection Circuit Breakers (MPCBs), as their name implies, are specifically designed to protect motors, compressors and other motive power loads. Like a typical MCCB, these devices offer additional protection against motor overload and phase loss in balanced 3-phase systems. Contactors are solenoid-operated switching devices, usually remotely operated, that are designed to undertake repeated cycles of operation. BS EN 60947-4-1:2010+A1:2012 (Contactors and motor-starters â&#x20AC;&#x201C; Electromechanical contactors and motor starters) gives specific information about these devices. Safety first, cost second When specifying low-voltage switchgear assemblies, in particular the forms of separation, then ultimately the greater the degree of protection, the greater the cost. This can initially be seen as a barrier to selecting the more expensive options, however, this should not be the case, as an appropriate selection can ensure that not only the does the installation provide safe working situations for those working on/near it, but it can also reduce downtime when inevitable maintenance is required. As a rule of thumb, the higher the form of separation, the larger and costlier the assembly will be. This will impact on the selection should space and budget be limited but it should never override safety. ___________________________________________________________ *Note: BS EN 61439 specifies the requirements for low-voltage switchgear and assemblies, while BS EN 60947 specifies the functional units within the assemblies.

This article is based on an extract from ECAâ&#x20AC;&#x2122;s Application Guide: Selection of LV Switchgear and Protective Devices. The full 49-page document is available free to ECA Members and can be accessed at: www.rdr.link/ej020

TECHNICAL & TRAINING

CARAVAN SITES AND COMMON NEUTRALS NAPIT’s Bill Allan answers a common technical query regarding best practice requirements for installations at caravan sites.

recent enquiry to the NAPIT technical helpline raised an interesting question about sub-main cables with a common neutral conductor that we felt we should share with readers of PE. It was as follows:

I’m working on a caravan site and a previous contractor has installed a 3 core swa sub-main cable for two caravan supply hook-ups. The sub-main is run from a single-phase distribution board at the intake position of the site and it contains two line conductors and a common neutral. Each of the line conductors has a separate circuit-breaker. This installation doesn't seem right to me. Can you direct me to the relevant regulations? From the information supplied, this installation is a distribution circuit (i.e. a sub-main) which has been intentionally designed with the neutral conductor common to two separate single-phase supplies, each taken from the same phase. Therefore, the neutral conductor is not what is commonly known as a ‘borrowed neutral’. Although this question pertains to a caravan site, it is of general interest as this type of installation could, in theory, be used in other locations. Therefore, we will begin by answering this question in a general

READERLINK 025

way. We will then apply this answer specifically to caravan sites.

Load A

Load B

Common neutral conductor

Installations with a common neutral conductor Fig. 1 shows the basic arrangement described with the protective conductor and any isolators and RCDs omitted for clarity. We would emphasise that this arrangement cannot comply with BS 7671 and we include it only to help our readers understand the question. Fig. 1 shows a 3 core sub-main cable with a common neutral conductor Polyphase shared between two loads. This is not a standard supply system in the UK and raises a number of concerns. Perhaps the most obvious concern is that it does not comply with Section 314, Division of installation, in BS 7671.

Circuit-breakers

Neutral bar

RCD

Distribution board

)LJ 6LPSOL¿HG GLDJUDP VKRZLQJ D GLVWULEXWLRQ FLUFXLW ZLWK D FRPPRQ QHXWUDO FRQGXFWRU ZKLFK GRHV QRW FRPSO\ ZLWK %6

Live conductors Line conductor L1

3KDVH FRQGXFWRU

Neutral

3KDVH FRQGXFWRU

Line conductor L2

3KDVH FRQGXFWRU

Line conductor L3

Protective conductor

Distributor’s installation

Section 314, Division of installation Regulations 314.1 and 314.2 include distribution circuits such as those described in the question. Regulation 314.1 requires that every installation is to be divided into circuits and it gives a number of

L2 L3

Consumers installation

Single phase and neutral Live conductors Line conductor L

3KDVH FRQGXFWRU

Neutral

Neutral conductor N

Protective conductor

Distributor’s installation

Protective conductor

Consumers installation

PROFESSIONAL ELECTRICIAN November 2019 43

TECHNICAL & TRAINING

Overcurrent protective device 30 mA RCD

Distribution cable cpc and Swa segregated from the pitch supply earthing

Distribution board

3 core Swa sub-main cable

BS EN 60309-2 Socket-outlets for caravan supplies

PME supply

Earth electrode for pitch supply

Sub-main cable buried in ground min of 0.6 m

Fig. 2. Typical Caravan site distribution for a PME supply showing an earth electrode adjacent to the caravan pitches.

reasons for this. One reason is to avoid danger and minimise inconvenience in the event of a fault. Regulation 314.2 states that separate circuits must be provided for parts of the installation which need to be separately controlled in such a way that those circuits are not affected by the failure of other circuits, and due account must be taken of the consequences of the operation of any single protective device. It is evident that Fig. 1 cannot comply with Regulations 314.1 and 314.2. This means that the common neutral arrangement may not comply with certain basic requirements of BS 7671, such as those for isolation and switching (Chapter 46), overcurrent protection (Chapter 43), protection against electric shock (Chapter 41), the cross-sectional area of neutral conductors (Regulation 524.2) and voltage drop (Section 525). Where a common neutral conductor is normal In three-phase and neutral systems, single neutral conductors are normal, even if the three line conductors supply different single-phase loads. An instance of this applying to luminaires is found in Regulation 559.5.5.

As the Electricity Safety, Quality and Continuity Regulations (ESQCR) prohibit the connection of a PME earthing facility to caravans, the supply to the caravan pitches will have to be part of a TT system that has a separate connection to Earth independent of the PME earthing. The separation of the earthing can be achieved by installing an earth electrode adjacent to the intake position to make the sub-main distribution to the pitches part of a TT system. The alternative is to install an earth electrode adjacent to the caravan pitches, as shown in Fig. 2. Given the concerns discussed previously, one option would be to change the wiring of the 3 core sub-main cable from its present shared neutral arrangement to make the three conductors line, neutral and protective conductor. Identification of the conductors would be required in accordance with Section 514 of BS 7671. If the cross-sectional area of the

Section 708 in BS 7671, Electrical Installations in Caravan/Camping Parks and Similar Locations We’ll now turn our attention to the requirements of Section 708. As the type of supply system isn’t mentioned in the question, we’ll assume that it is a PME supply to the main intake position of the caravan site.

44 November 2019 PROFESSIONAL ELECTRICIAN

sub-main cable is adequate, the cable could be used to supply both caravans, or even more (if required). This arrangement is shown in Fig. 2. Notice that the supply to each socket-outlet which provides a supply to each individual caravan has an overcurrent protective device in accordance with the requirements of Chapter 43 (Regulation 708.533). Fig. 2 also shows a 30mA RCD capable of disconnecting both line and neutral conductors at each socket-outlet (Regulation 708.415.1). If the sub-main cable had a shared neutral If the sub-main cable had a neutral conductor which was shared with another circuit (as in the question) and the overcurrent protective device were to operate, the common neutral conductor would not be broken as the overcurrent device is in the line conductor only. Therefore, although the socket-outlet served by that particular overcurrent device would lose its 230V supply, the neutral conductor, since it has not been isolated, may carry some returning current from the load on the second socket-outlet and present a shock risk at the ‘isolated’ socket-outlet . If the sub-main cable had a shared neutral conductor, reliable operation of the RCD could not be guaranteed. Conclusion There are no doubt other points which could be made and other objections which could be raised against this common neutral arrangement. Space limitation prevents us from going into more detail in this article. Suffice it to say that this sub-main cable is not suitable and must be changed as soon as possible. As always, the onus is on the installer to confirm that an electrical installation complies with all the relevant requirements of BS 7671. As a NAPIT Registered Installer, you can access a wealth of technical information, guidance and advice. If you would like more details on joining a NAPIT scheme, call 0345 543 0330 or go to: www.rdr.link/ej021

TECHNICAL & TRAINING

GET YOUR INSTALLATION RIGHT – FIRST TIME

Jarkko Aro, Director of Sales & Operations for I.C. Electrical (part of VEO Group), highlights the key considerations you should be making when starting an installation from scratch. aced with the challenge of getting a site or production facility up and running as quickly as possible, systems designers and engineers can fall into the trap of building a system that works now, but won’t necessarily stand the test of time. However, planning ahead for future changes in technology and capacity is always a wise move and can save significant amounts of time and money in the long term.

Watch this space Space is naturally one of the foremost considerations in any large-scale project and whilst there can be a temptation to plan and build for the here and now, space planning should always take into account the potential for future growth. This is particularly important in electrical plant rooms, where failing to allocate enough room for switchgear panels can not only make maintenance tricky, but can also severely limit the scope of potential upgrades.

Efforts to increase capacity in any production or manufacturing setting almost always requires the installation of a number of new switchgear panels, particularly when a new product line is being introduced. With this in mind, at the design stage of any new installation, planners should ask themselves what future expectations of the plant might be, as well as investigating if there are any expansions or extensions already in the pipeline. Factoring in extra capacity at the outset is almost always more cost-effective than having to retrofit existing installations. Collaboration between all engineers and tradesmen is also essential in order to get an installation right from the start. In some cases, failing to plan works properly at a particular site can have serious implications for timescales and budgets. For example, spatial planners and designers may not consult electrical designers when planning either the building or the production line itself. In the best case scenario, this means a slight

headache for the electrical installers. However, in the worst case scenario, where site dimensions are wrongly calculated, electrical equipment may not fit, requiring organisations to take their plan back to the drawing board. It’s good to talk This collaboration also goes hand-in-hand with communication, especially between contractors and subcontractors. Managing a project pipeline and keeping progress on track can be a delicate balancing act and if all parties are not communicating effectively about work being undertaken – or any unknown delays – problems could arise. Product dimensions can vary from project-to-project, as well as supplier-to-supplier. Each manufacturer will have their own set specifications which must be accounted for in any scheme design. In many cases, a more unified approach within the industry – particularly in relation to product dimensions – would be helpful in ensuring that inconsistencies do not cause delays when it comes to

PROFESSIONAL ELECTRICIAN November 2019 47

TECHNICAL & TRAINING

installation time. Budgeting is naturally critical for all projects. Whilst every installation must be subject to certain financial constraints, and every customer wants to keep costs as low as possible, there must be budget allocated for any variations which may arise towards the end of the project. These could include overall project design changes, costs incurred for additional time spent on-site due to adverse weather conditions and any re-testing or re-commissioning which may be required. Of course, technology is improving and changing at a rapid pace and systems which may seem high-tech now will be superseded very quickly. Trying to plan ahead for the next big innovation is not an easy task, however it is worth considering what may change in future when planning a design. For example, fibre optic and wireless technology is becoming a more common sight in many installations. Reacting to such trends and opting for

switchgear panels and other equipment which have the ability to be upgraded in future would be a wise move, potentially saving a significant amount of future investment in totally new systems. One eye on the future The most prudent approach is to design and install using the latest technology â&#x20AC;&#x201C; providing, of course, it is well tested. This increases the chance of adding longevity to any installation. Any connected media or

IoT (Internet of things) technology chosen should be based upon the greatest information transfer speed possible to futureproof for tomorrowâ&#x20AC;&#x2122;s technology. Getting an installation right from the start is essential in saving time, energy and ensuring that any plans have room for expansion. Failing to communicate with other suppliers, main contractors and subcontractors could result in a plan design which is not fit for purpose and leaves little room for upgrades or improvements.

TECHNICAL & TRAINING

Hager’s UK training academy, based at the company’s Telford headquarters, has celebrated its first anniversary since its official opening last year.

TRAINING ACADEMY’s1ST BIRTHDAY uring its first year, the training academy has welcomed over 550 electrical contractors who have taken the opportunity to boost their skills and knowledge across a range of subjects, including the 18th Edition of the IET Wiring Regulations. The interactive learning environment, which provides courses for both domestic and commercial installers, means attendees can immerse themselves in a number of technical subject areas to build on their knowledge and gain certification from City & Guilds accredited courses and seminars.

The training sessions are led by Hager’s expert training team, which is dedicated to ensuring electrical professionals maintain the highest standards and better understand the changing regulatory landscape brought about by the 18th Edition. Paul Collins, Technical & Training Manager at Hager, comments: “The Hager training academy has proven really popular in its first year. The high demand for attendance at the training facility is testimony to the fact that many across the industry are keen to improve their knowledge and skills. The fact we’ve also managed to achieve a pass rate

of 99% too is further proof of the dedication those working in the sector have for their profession. “We’ve received many positive comments from course attendees about the training facility and how it provides a superb environment in which to learn. We look forward to welcoming even more electrical professionals over the next year.” For more details about the range of training courses available at Hager’s training academy, including those covering the 18th Edition, go to: www.rdr.link/ej022

MAKE THE SMART MOVE – BECOME A LITHE AUDIO PRO INSTALLER ithe Audio, the award-winning Surrey-based AV brand, is launching the Lithe Audio Pro Installer initiative to help electricians make the most of the opportunities offered by the growth of smart home tech. The programme provides professional support for qualified electricians, with product training across Lithe Audio’s product range, including the Wi-Fi Ceiling Speakers with Control 4 Driver. The

programme also offers a dedicated support line for members, priority updates, and an online listing on the Lithe Audio ‘Find an Installer’ map. A welcome pack will also be supplied with brochures, leaflets and an official Lithe Audio Pro Installer van sticker. Lithe Audio’s products are stylish and innovative and easy for any electrician to set-up. Installing ceiling speaker systems is now made easy with an all-in-one solution. Simply connect

power to each master speaker from the existing lighting or power circuits and avoid unnecessary chasing of cables through walls. The Wi-Fi ceiling speakers provide an excellent solution for multi-room music streaming across the house, whilst the Bluetooth ceiling speakers provide better solutions for single rooms and have pin protection. Both include built-in 60W RMS amplifiers and have auxiliary input ports for external sources. Users can seamlessly stream high quality audio from any Wi-Fi-enabled audio service to a single, a selection or – with the Wi-Fi speakers – up to 30 speakers at once for a full multi-room audio experience. To find out more about how you can sign up to the Lithe Audio Pro Installer scheme, go to: www.rdr.link/ej023

PROFESSIONAL ELECTRICIAN November 2019 51

Working on your own? Need some technical advice? Don’t know where to turn? Ask Megger. What it doesn’t know about installing and testing electrical systems isn’t worth knowing. Every question will be answered by the Megger Technical Team, and the best will be published in Professional Electrician. So, take advantage of the ‘every question answered’ guarantee today. Email your questions to: meggermeasures@hamerville.co.uk

You asked: I’VE BEEN HAVING PROBLEMS TESTING RCDS ON CIRCUITS POWERED FROM 110V SITE TRANSFORMERS. MY RCD TESTER SIMPLY DOESN’T SEEM TO WORK PROPERLY IN THESE SITUATIONS. WHAT DO YOU RECOMMEND?

52 November 2019 PROFESSIONAL ELECTRICIAN

We say: The most likely reason you’re having problems is that the secondaries on these site transformers have an earthed centre tap, so you’re actually working with a 55-0-55V supply. Your RCD tester is, therefore, seeing just 55V, and there are many types that don’t work properly with such a low voltage. It looks like you’re going to need a new tester but, before you decide which to buy, be sure to check the data sheet carefully! Whilst you’re buying a new instrument, another thing you might want to watch for is its frequency range for testing RCDs. The mains supply is, of course, accurately controlled at 50 Hz but, if you ever have to test RCDs on a system powered by a generator, you may well find that the frequency is a long way from this. If you’re looking for a dedicated RCD tester, then Megger’s RCDT320 would be a good choice. If you prefer a multifunction tester, then one of the models in Megger’s MFT1700 range will meet your needs. These instruments will test RCDs reliably at voltages down to 48V and at frequencies anywhere between 46-65 Hz.

TECHNICAL & TRAINING

The DL6518 Leakage Current Clamp measuring differential current on the live and neutral conductors.

18TH EDITION: EARTH LEAKAGE EXPLAINED Do you need to know if your cables are leaky? According to the 18th Edition, the answer is ‘yes’, as Dave Sweetman, Marketing & Business Development Director at Di-LOG Group, explains. ow often have you spent hours fault-finding nuisance tripping issues for free, wishing you’d have known there was a problem before quoting for this particular DB upgrade? There is a new 18th Edition regulation identifying the requirement for you to measure Earth Leakage, as stated in BS 7671 Reg 531.33.2. In a nutshell, electricians must check that each install completed does not have excessive leakage to earth on each of the RCDs or RCBOs. The maximum permitted value per RCD has been set at 30% of the nominal value, i.e. a 30mA RCD would be no more than 9mA, 100mA would be 30mA, and so on. Nonetheless, I’m sure you’d find it useful to know if there is a potential issue on an installation before you quote for your next DB change. The only way to indicate the presence of Earth Leakage would be to use an Earth Leakage Current Clamp Meter. The Di-LOG DL6518 Earth Leakage Clamp is a low-cost solution that works on

The DL6518 Leakage Current Clamp measuring differential leakage on the live and neutral conductors of RCD2 indicating 5.5mA leakages, which is under the 30% threshold, as stated in BS 7671

differential leakage measurement, which involves simultaneously clamping around the live and neutral conductors together. You can check any installation by simply clamping around your meter tails on the supply. The DL6518 has a measurement resolution of 100µA (0.1mA), making measurement very accurate when measuring minimal AC currents. Domestic installations tend to have dual 30mA RCDs fitted or are even made up entirely of RCBOs. If the installation shows a combined differential leakage current above 30% of each RCD/RCBO value (in this case 9mA), you may need to take action to manage the leakage to earth and minimise the likelihood of nuisance tripping. We all know how costly call-outs are to any business that needs to reset or investigate a tripping RCD! Where possible, you will need to have the day-to-day electrical appliances in operation to accurately determine potential issues. If excessive leakage is then identified on the tails, you would then need to clamp around the live and neutral conductors of each of the RCDs to

determine if the leakage on that RCD is above the 30% threshold, ideally looking for a current considerably less than 9mA. You then repeat for each RCD. Intentional or unintentional leakage If the Earth Leakage detected on each RCD is excessive, the user will need to ask: “Is this intentional or unintentional?” Intentional Earth Leakage tends to be found in electrical appliances in the form

PROFESSIONAL ELECTRICIAN November 2019 55

TECHNICAL & TRAINING

PRIZE DRAW

The DL6518 Leakage Current Clamp measuring differential leakage on the live and neutral conductors of RCD1 with the kitchen MCB switched off, indicating that you’d want to investigate the kitchen main ring for either ‘intentional’ or ‘unintentional’ leakage

of a functioning earth, where a small amount of earth leakage is required for the appliance to function. Unintentional Earth Leakage tends to occur in poor installations where there could be a breakdown in the conductor insulation or moisture ingress, amongst many other causes.

The DL6518 Leakage Current Clamp measuring differential leakage on the live and neutral conductors of RCD1 indicating 9.5mA leakages, which is in excess of the 30% threshold, as stated in BS 7671

Identification Switching each individual circuit off one-by-one is a good area to start. Here you can easily identify which circuit you may need to investigate further. Once a circuit is identified, eliminate the ‘intentional leakage’ first by switching off each individual appliance one-by-one to see if this changes the result. Every electrical appliance has a ‘Protective Earth Conductor current’ limit – you should refer to the In-Service Inspection and Testing Code of Practice for more information on these limits. If the isolating of electrical appliances does not change the result, it may well be ‘unintentional leakage’, and a check of the insulation of the conductors will be required in the form of an Insulation Test. Leakage management There are an array of options available to manage your Earth Leakage: balancing circuits between RCDs to fall below the 30% threshold, fitting RCBOs, testing the electrical appliances, or even a complete re-wire. All are critical when you price up your next job! To download a spec sheet, offering more information and technical details about Di-LOG’s DL6518 Earth Leakage Clamp, go to: www.rdr.link/ej024

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LIGHT UP YOUR W IN MONTH WITH A RED LETTER DAY Win a £200 voucher, courtesy of OVIA. ollowing eight years of success as a leading name in the lighting industry, the OVIA brand from Scolmore has been significantly developed to bring to professional installers one of the most comprehensive ranges of lighting products available through the wholesale channel. OVIA is operating as an independent lighting company, with the full backing and support of the Scolmore Group. Designed to offer quick and easy-to-install solutions that will save electricians time and money on a project, the new OVIA collection comprises more than 400 individual lines and includes products suitable for a whole spectrum of projects in a broad range of sectors including: domestic, commercial, industrial, utility, amenity, emergency lighting and floodlighting. OVIA is already a well-known name within the industry having been introduced in 2011 as the umbrella brand for the company’s growing lighting collection. Having enjoyed considerable success with its lighting division to date, Scolmore recognises the huge market potential that has come with the transformation of the lighting sector in recent years, with the emphasis on energy efficiency and connected systems. Scolmore has a reputation for innovation and will continue to demonstrate this through the new, independent OVIA business.

HOW TO ENTER To enter your name into the draw to win a brilliant red letter day voucher, go to: www.rdr.link/ej025 and fill out the contact form. One winner will then be chosen at random. Deadline for entries: 10/12/2019. Usual T&Cs apply.

Technical & training

PART P COMPETENT PERSONS SCHEMES REGISTRATION FOR ENGLAND AND WALES

Metal consumer units in installations forming part of a tt earthing system

he aim of this article is to offer guidance to contractors when installing a consumer unit and/or similar switchgear manufactured from a non-combustible material meeting the requirements of Regulation 421.1.201, in a domestic installation forming part of a TT earthing system.

Introduction Where an installation forms part of a TT earthing system, irrespective of the type of material the consumer unit is manufactured from, Regulation 411.5.2 typically requires the installation of one or more RCDs as a protective measure for fault protection. Any RCD providing fault protection shall be erected at the origin of the installation that is to be protected (Regulation 531.3.5.3.1 refers). In an installation with multiple origins, this requirement shall apply to each origin. Most TT installations are likely to contain multiple RCDs providing additional protection, or possibly fault protection either, protecting groups of circuits and/or individual circuits. Where this is the case these protective devices shall be selected and erected as to limit the risk from unwanted tripping (Regulation 531.3.2). Similarly, where multiple devices are installed and there is a need to minimise the inconvenience of unwanted tripping during a fault the requirements for selectivity may need to be taken into account. Installation of a metallic consumer unit The installation of a metallic consumer unit complying with BS EN 61439-3 is most likely to be the preferred option for achieving compliance with Regulation 421.1.201. However, due care must be applied to the installation method where a metal clad (Class I) consumer unit is installed in an installation forming part of a TT system. An earth fault occurring between the incoming line conductor of

of ground resistance for a single phase supply, the earth fault current that will ﬂow under such fault conditions can be calculated as follows:

the meter tails and the metallic enclosure, as shown in Fig 1, will not be detected by the RCD installed in the consumer unit. The metallic casing of the consumer unit and subsequently all other conductive parts connected to the main earthing terminal (MET) of the installation will rise to a potential approaching close to the supply voltage (230 V to Earth), creating a potential shock risk.

Distributor’s meter

I fc =

230V = 2.3A 100 Ω

Clearly, this level of fault current is insufficient to operate the distributors’ overcurrent protective device and

Main switch (537.2) RCD (411.5.2)

Class I enclosure

Supported (522.8.5)

See Fig 2

Meter tails kept as short as possible

Earthing conductor

Earth electrode

Fig 1

Effect of a fault to earth between meter tails and the metallic consumer unit

Under such circumstances, due to the high external earth fault loop impedance (ZS) typically associated with a TT system, which can often exceed 100 Ω, the earth fault current is unlikely to reach the level required to operate the service fuse, and even if it does the operating time is unlikely to be within the 1 s disconnection time required by Regulation 411.3.2.4. For example, if the maximum earth fault loop impedance is taken as 100 Ω also taking into account the seasonal changes

therefore, unless a low value of (ZS) can be assured and maintained while meeting the requirements of Regulation 411.5.3 for fault protection, such a fault will remain uninterrupted. For this reason it is preferred that fault protection for a TT installation is provided by an appropriately rated RCD (Regulation 411.5.2 refers). In addition, the selection of an appropriate RCD for a particular installation shall meet the requirements of Regulation 531.3.5.3.2. Such that, the rated residual

PROFESSIONAL ELECTRICIAN November 2019 59

Technical & training operating current of the chosen RCD shall not exceed the corresponding IťP to the maximum value of earth resistance (Ra), including that of the earth electrode and protective conductor connecting all exposed-conductive-parts. In the example above the maximum earth fault loop impedance is 100 Ω and therefore, the maximum rated residual operating current of the chosen RCD shall not be greater than 500 mA, given in Table 53.1 of BS 7671 and is partially reproduced in Table 1.

Table 1

Maximum value of earth resistance (Ra) in relation to rated residual current of the RCD

Maximum value of Ra (Ω)

•

Maximum (I∆n) of the RCD

100

500 mA

167

300 mA

500

100 mA

1667

30 mA

Meter tails It may not be possible to eliminate all the risk associated with protecting meter tails from a fault to earth typically, between the origin and the RCD protective device within the consumer unit. However, by adopting longstanding industry practices applied by many electrical contractors, such as those listed below, the risk can be mitigated sufficiently:

•

use of thermoplastic or thermosetting insulated and sheathed cables for the meter tails (Regulation 531.3.5.3.2.201 refers), and

•

positioning of the consumer unit in close proximity to the energy meter, reducing the length of the meter tails and minimising the risk of damage,

•

ﬁtting an insulated cable gland, bush or similar protecting the cables from abrasion as the meter tails enter the metallic consumer unit and/or protective enclosure, as shown in Fig 2.

• •

required which must be maintained of at least IP3X (Regulation 422.4.1 refers). Using appropriate types of equipment complying with the relevant standards for temperature rise will meet this requirement (Regulation 422.4.201).

Fig 2

Insulated bushes for entries to Class I enclosures

Additionally, in order to avoid the effects from induced eddy currents in the metallic enclosure and associated heating effects, all the meter tails should enter the consumer unit through the same entry point (one cable entry knock-out hole). Degree of protection The requirement of Regulation 421.1.201 is intended to ensure that any source of ignition, such as arcing caused by a loose termination occurring within the consumer unit and/or switch gear assembly is prevented from igniting the enclosure while reducing the risk of any fire from spreading externally. It is for this reason that the entry points of all cables, including that of the meter tails, into the metallic consumer unit should not, so far as reasonably practicable, reduce the fire integrity provided by such equipment. Cable entries, such as those often used for back entry into the consumer unit must be provided with suitable sealing methods and may include intumescent gaskets, grommets and/or fire sealants to maintain the degree of fire integrity. However, it is generally accepted that the requirements of Regulation 416.2.1 and 416.2.2 which are intended to prevent contact with live parts also help to maintain the fire integrity of the consumer unit. Such that, all cables entering the top surface of the consumer unit shall need to maintain a degree of protection of at least IPXXB or IP2X and IPXXD or IP4X applicable for elsewhere.

Where the installed equipment, such as an all-insulated construction consumer unit, fails to meet the requirement of Regulation 422.4.201 further preventative measures shall be applied to prevent the spread of ﬁre. This may include the use of a secondary enclosure manufactured from a non-combustible material of suitable thickness, for the containment of the consumer unit (Regulation 422.4.202 refers). Summary There is a greater risk associated with the installation of a metallic consumer unit in an installation forming part of a TT earthing system. It is for this reason consideration must always be given to the location of the consumer unit and length of meter tails in relation to the energy meter. Appropriate installation methods and practices that have been applied by electrical contractors for many years continue to minimise the risk of damage to the meter tails and subsequent earth faults. It must be recognised the need to maintain the degree of ingress protection and the ﬁre integrity of the consumer unit in relation to the type of installation method.

Publications covering this and related subjects are available from

www.shop.niceic.com/elecsa

Where the installation of a consumer unit is to take place on or in a combustible prefabricated wall, additional precautions must be applied to prevent the ignition of surrounding materials. Equipment having a greater degree of protection will be

For other guidance and publications please see the ELECSA website. For information about the ELECSA Domestic Installers schemes, visit www.elecsa.co.uk or call 0333 321 8220

www.elecsa.co.uk 60 November 2019 PROFESSIONAL ELECTRICIAN

Did you know... Every accessible toilet should have an emergency assistance alarm fitted? Furthermore, did you know that it must have a call acknowledgement function so staff responding to a call can reassure the person inside that help is on its way? BS 8300 states that: “visual and audible feedback should be provided to indicate that, when the alarm has been operated, the emergency assistance call has been acknowledged and is being actioned.” C-TEC manufactures the UK’s biggest selling range of accessible toilet alarm kits and components including:

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PRODUCTS & BUSINESS SOLUTIONS

As interest in connected home devices continues to rise, Google Nest breaks down how this is set to offer opportunities for installers in the future.

OPPORTUNITY KNOCKS onnected homes are here to stay. Research from PwC suggests that 30% of the UK population say they’re planning to buy a connected home device within the next two years. That’s more than double the number who said the same back in 2016, underlining the huge growth in the industry. And, with connected home technology now integrating everything from heating and lighting to security and fire safety, this presents a huge business opportunity for professional installers. Particularly given that 59% of UK homeowners say they would prefer a professional to install their connected devices, according to Eureka Research.

Your business… in one year PwC’s Connected Home 2.0 survey predicts that £10.8bn is expected to have been spent on connected home devices – including thermostats, video doorbells, security cameras, and more – in the UK by the end of 2019. This comes with two significant opportunities for installers. Firstly, as more devices are purchased, there will also be a rise in the number of people turning to professionals for help installing and setting up their new connected home devices. Secondly, YouGov’s Smart Homes 2018 report (‘the dawn of the connected home’) reveals that, among people who currently own at least one connected home device, consideration for buying further such devices increases to 40%. In

other words, you may be able to turn a simple installation into a much larger job – a customer who asks you to install a smart thermostat could then be more receptive to hearing about other connected home devices, such as indoor and outdoor security cameras and a video doorbell. Your business… in two years As we move into the 2020s, all evidence points to a new trade emerging. “In the past, we’ve had quite disparate trades – there’s heating engineers, electricians, security and more, each responsible for fulfilling only one aspect of a customer’s needs,” says Paul Haynes, Head of Industry Partnerships at Google Nest. “With connected technology, a new trade is arising, and the traditional installer – with their skills and knowledge – has much of the core expertise required to join this new trade.” And it’s not just new customers who will be seeking out the skill-set of this modern brand of professional installer. You can expect to receive repeat customers too, as PwC predicts over 40% of existing connected homeowners in the UK are expecting to upgrade their devices within the next two years. The more of these devices you are familiar with, and the more connected home installs you do today, the better for your business.

Your business… in five years By 2025, connected homes are expected to become the norm. “In the next few years, connected home technology will be completely normalised, just like the internet is today,” says Professor Dorothy Monekosso, Director of Research at the School of the Built Environment, Leeds Beckett University. “There will be no need to explain what connected home devices are, or what they do, because almost everyone will own at least one. I expect there to be a particular demand when it comes to home security – such as cameras and entry systems – but also assisted living, helping our ageing population to live more autonomously.” Needless to say, within the next few years, acquiring expertise within the connected home market will become essential for installers. Find out what real-life installers think of Google Nest products on the next page

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PRODUCTS & BUSINESS SOLUTIONS

Two professional installers share their insights and experiences from working with connected home technology, and the benefits that embracing this market has brought to their businesses. Meet the Google Nest family

THE INSTALLER’S VIEW Karen Boom Award-winning electrician (@Shes_ElectricUK) The installation market is developing at such a rapid pace. I’ve seen this sector increase by leaps and bounds, especially over the past two years, with new products being brought to market every day. It’s a case of keep up or be left behind. Expertise in connected home technology has become an essential item in my professional toolbox. Customers are expecting much more from their homes now, and this comes with a new set of challenges. The cabling of ‘intelligent switching’, for

example, can be done differently from how we would carry it out conventionally – it’s a bit mind-boggling unless you fully understand it. Product research and knowledge is vital. This is not only in order to stay ahead of my competitors, but also to be able to advise my customers on the most suitable and cost-effective solution for their requirements and existing installation. I recently attended a couple of courses and training days which were extremely helpful – I now feel more knowledgeable about the product ranges. I am, therefore, able to offer customers more choice when it comes to selecting a suite to suit them.

Nest’s helpful home devices include: ● Nest Learning Thermostat ● Nest Protect ● Nest Hello ● Nest Cam IQ Outdoor ● Nest Cam IQ Indoor ● Nest Hub Amrinder Singh Plumber, Installer and Nest Pro at Handa Heating (@amrinder_handa) I first came across Nest about four years ago. I searched the website and saw the option to sign up for an installer account. Slowly but surely, I started to receive customers from Nest. That first year, I received 30-40 jobs. The next year, double that. Now I install, on average, 4-5 of its products every day. Every installation has the potential to turn into an even greater business opportunity. It’s very common that a customer will get me in to install a Nest thermostat, for example, and then while I’m there, ask if I can replace the boiler, too. So, I’ll get a job through the company that turns into an even bigger job. Also, customers will often call back and say: “We love our thermostat, now we want to install a doorbell and security cameras – can you help us set it all up?” There is a definite benefit to becoming a Nest Pro, especially for people who are starting a new business. The way the programme works, you complete a job and receive a good review, then you receive another job and another good review, and so on. The more jobs you do, the more new customers you’ll acquire. To find out more about becoming a Nest Pro, visit: www.rdr.link/ej027

66 November 2019 PROFESSIONAL ELECTRICIAN

PRODUCTS & BUSINESS SOLUTIONS

RIGHT AS RAIN Peter Dumigan, Managing Director of the Hultafors Group UK, owners of Snickers Workwear, advises on the best ways of staying dry on-site. t’s said that rain can affect your mood. Well, it can definitely affect the way you work on-site; it can also have a negative impact on your health and wellbeing. If you haven’t got particularly effective rainwear, your mid- and base-layer clothes will get damp and uncomfortable. Apart from your clothes getting heavy, you can also get a rash from simple irritation through friction. Then, moving around becomes much more tiring. Your body can also lose heat – probably faster than you can generate it to dry your clothes out. That’s fine if you’ve been drenched by a sun shower when it’s warm, but if it’s cooler or even cold on-site your body temperature is going to drop. Not only can stewing in your wet clothes chafe and irritate your skin but, if you’re wearing damp or wet clothes for too long, bacteria and fungus from the air can multiply in the wet environment and then run rampant on your skin, causing rashes and irritation.

Stay dry in the rain Staying dry and comfortable on-site is all about choosing the right type of rainwear for the job. Your choice depends on a variety of factors, from the type of rainfall to how intensely you're working and how many hours you spend outside. Here’s what to think about when dressing for wet weather work – not only jackets but trousers too: ●

●

For 100% waterproofness for a full day’s high-intensity work – choose a breathable waterproof garment with taped seams for maximum protection and breathability. For 100% waterproofness in low-intensity work in pouring rain – choose a PU garment with welded seams.

PROFESSIONAL ELECTRICIAN November 2019 69

PRODUCTS & BUSINESS SOLUTIONS

●

For a basic protection against water – choose a garment that is water-repellent. The garment will keep you dry if it’s drizzling but still offers breathability. Don’t forget that what you wear underneath your outer layer really matters.

For high-intensity work, make sure your base- and mid-layer clothes can transport moisture. For low-intensity work, or work in lower temperatures, you might need to add an extra layer to build warmth. ‘Waterproof’ or ‘water-repellent’? When it comes to ‘water protected’ workwear it’s important to know what’s behind each of the terms. They are different. A waterproof garment – like our GORE-TEX jackets – is the most effective 100% protection in rainy weather. This kind of waterproof fabric consists of an outer layer called the ‘face fabric’, usually made of polyester with a laminated membrane or a coating that prevents water penetration. It’s achieved by sealing the internal fabrics completely from external conditions. All seams and cut lines are taped or sealed to stop the water coming through the stitched areas of the fabric. Water-repellent garments only offer basic protection against the effects of water, but at the same time provide great breathability to ventilate your body when you’re active. Water-repellent protection is achieved by using a hydrophobic fabric, which means that the water is repelled on contact. The fabric is treated with a DWR (Durable Water Repellent) finish that causes the water to form drops on the surface of the fabric that run off or can be brushed off easily. Choosing the right kind of waterproof workwear How wet are you likely to get on-site? Your answer will help you choose the right type

of rainwear to wear. What does the weather forecast say? Is there a risk of heavy rain, showers or drizzle? Will your work be low-intensity or more active? Finally, how long will you be exposed to the wet weather – minutes or hours? Longer shifts will put more demands on your working clothes and the waterproof technology used in the garments. That’s why you need to consider whether you should be wearing waterproof or water-repellent clothing. So, for longer exposure or, if you need 100% protection on-site in the rain, look for our GORE-TEX jackets. These highly technical garments are extremely durable with a membrane that has over 1.4 billion pores per square cm. They’re waterproof to keep you dry, windproof to keep you warm and breathable to keep you comfortable all day long. For quick and reliable protection when it’s raining or if your work is less active, choose our PU garments which have EN 343 certification for Protection against Foul Weather. This accreditation validates the garment’s performance in the rain through independent testing. Also, don’t forget about ventilation! Your clothes’ breathability is as crucial for your comfort as the outer-layer protection

70 November 2019 PROFESSIONAL ELECTRICIAN

against water, especially when you’re working really hard. Clothes with good breathability transport sweat away from the skin. So, make it a habit of checking the breathability features of the garments you buy. Breathability comes in two forms: either the breathability of the fabric itself, such as our 37.5 sports fabric, or built-in ventilation functionality such as zippers or meshed fabric areas at the sides and back of the garments. Finally, whatever the rain may do to dampen your spirits, as far as your work clothes are concerned, by choosing the right workwear, you can work effectively and comfortably all day long. To download a copy of the latest Snickers Workwear catalogue, go to: www.rdr.link/ej028

PRODUCTS & BUSINESS SOLUTIONS

FAST TRAK TO SUSPENSION SUCCESS Used in the suspension of electrical and mechanical services, we take a step-by-step look at how to fit the Fast Trak from Gripple. ast Trak is the suspension solution from suspension system manufacturer Gripple, specifically designed to save time and labour in commercial and residential building projects. Tests have proven it to be up to six times faster than traditional channel and rod methods and has a load capacity of up to 180kg with a 3:1 safety factor.

Using a trapeze bracket system, Fast Trak installations can be completed faster, smarter and without tools as adjustments can be made in-situ with the bracket easily moving up and down its tracks during installation. Safety lock-offs provide peace of mind, securing the system once it is in place and there is zero waste with excess track bending neatly under the bracket.

The range is particularly suited to areas with restricted space of less than 800mm with the inclusion of side-loading and low-profile brackets. It arrives on-site in pre-fabricated kits which are lightweight, making them easier to deliver, handle and store and are quick and simple to install using measuring indicators at each end as a guide for contractors. Fast Trak is also BIM-ready and fire tested.

HOW TO INSTALL FAST TRAK â&#x20AC;&#x201C; EIGHT SIMPLE STEPS Step 1: Marking positions for the installation of tracks Using the indicators at each end of the bracket, mark the fix points in the soffit. For additional accuracy, laser line one of the fixing points and use the other side of the bracket to mark the spacing for the second fixing point.

Step 2: Drilling If installing into concrete, drill holes where fixing points have been marked. Insert drop-in anchors with a setting tool (if thatâ&#x20AC;&#x2122;s your preferred fixing type) or wait until Step 3, if using concrete screws.

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Step 3: Fixing tracks to the soffit

Step 4: Installing the bracket Ensuring the safety locks are in the unlocked position, push the latches on each side of the bracket. Insert the tracks into the bracket, ensuring the slots on the bracket are facing the soffit and the bracket is perpendicular to the tracks. Slide the bracket to the required height on the tracks. Releasing the latches will ensure the bracket engages and locks into the tracks. Place light pressure on the top of the bracket to ensure it is correctly locked into the tracks.

When installing the tracks, the fixing tabs should be outward facing. Secure the tracks to the soffit through the 10mm hole on the fixing tabs, using concrete screws or anchor bolts and an impact wrench or electric screwdriver to secure the fixing. Ensure the two tracks are parallel to the run of electrical containment.

Step 5: Making adjustments

Step 6: Locking the bracket in place

If adjustments need to be made, simply push the latches at each side of the bracket and slide the bracket either up or down the track to the desired height. If installing multi-tiered services, repeat step 4 and position additional brackets on the tracks as required.

Step 7: Bending tracks into place Once the required bracket level has been set on the track, fold the excess track under the bracket with your hand and then press the push tab inwards to prevent any excess track sagging below the inside of the bracket. If using the Fast Trak Bracket Cover, bend the excess track as above but do not press the push tabs inwards. Instead, cut the bracket cover to the required length and simply click onto the A underside of the bracket to cover visibility of tracks and enhance aesthetics when looking up at services from floor level.

For additional security, once the bracket is in the desired position, use the safety buttons at each side of the bracket and engage into the lock position, following the direction symbols on the button.

Step 8: Adding services to Fast Trak Cable basket Insert the cable basket clip into slots on the Fast Trak bracket and turn clockwise until it wonâ&#x20AC;&#x2122;t turn any further. Ensure the next clip is in line A with the wire basket so that it can be attached. Present the cable basket and push down into the bracket until it clicks into position. Cable tray Place the cable tray in the desired position on top of the bracket. B Ensure the vertical slot of the tray is in line with the horizontal slots in the bracket; insert the CT Clip arms through the tray's vertical slot and use the CT Clip pin to secure the tray to the bracket in a push-fit motion.

C To view a promotional video, offering more details about the Fast Trak range from Gripple, go to: www.rdr.link/ej029

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PRODUCTS & BUSINESS SOLUTIONS

Which ventilation system is best for your client’s home or project? The technical team at Blauberg offer you some handy pointers.

VENTILATION: WHICH METHOD? here is much confusion over differing methods of ventilation and which is most suitable. Clearly the type of property will have a large bearing on the system that you choose – an older house that has trickle vents, airbricks and chimneys can use these features to its advantage, whereas a newer, more airtight property can also play to its strengths. Approved document F recognises four fundamental systems – three of them are electrical and one is passive – so let’s take a look at the three electrical systems:

SYSTEM 1 Intermittent Fans with Background Ventilators Traditional bathroom and kitchen fans

(including cooker hoods) are classed as intermittent. They’re switched on and off as required and rely on passive supply via background vents. This system favours a house that has some natural air leakage. SYSTEM 3 Mechanical Extract Ventilation with Background Ventilators (M.E.V) A centralised extract system which extracts from all wet rooms and exhausts via a single duct. Again, this system relies on passive supply via background vents, but differs from intermittent by running continuously and having trickle and boost speed settings. This system also suits a house that has some natural air leakage.

SYSTEM 4 Mechanical Ventilation with Heat Recovery (M.V.H.R) A centralised system which extracts from all wet rooms and has a controlled flow of supply air which is warmed, via a heat exchanger, by the extracted air. This differs fundamentally from all other systems as it does not require any further background vents and favours an airtight house.

If you are interested in attending Blauberg’s two-day training course on BPEC Domestic Ventilation Systems, email: rob.holton@blauberg.co.uk or visit: www.rdr.link/ej030

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Products IN PRACTICE

Gira decks out luxury Spanish houseboat The Punta de Mar, a luxury Spanish houseboat, has been kitted out with a host of specification products from Gira. The boat is the first floating hotel penthouse of its kind in Spain, offering exclusive guests a luxury holiday at sea. Firstly, Gira has specified the Gira G1, a compact, intelligent central control unit for the KNX system. It operates all of the featured building technology, including the control and management of lighting, blinds and heating. The Gira G1’s high resolution multi-touch display allows all functions to be intuitively operated with a touch or gesture, just like you would with a smartphone or tablet. The Punta de Mar has also received the Gira E2 Design Line as part of the installation. This allows guests to manage all the systems on board by using the remote Gira App, or via the Gira E2 Design Line. Mark Booth, Managing Director at Gira UK, commented: “As a company, we are deeply rooted in the art of intelligent system integration. So, it is a real privilege to include our ground-breaking technology in such a progressive, custom-made project like the Punta de Mar. Our high design, modular-style system technology and specification products are designed to offer the ultimate in comfort and convenience. Gira solutions are designed to intuitively work with the user and its environment, facilitating every on-board guest with the greatest level of comfort and utility. Features include the reduction of energy consumption by optimising the heat distribution inside, through to instinctual lighting and blind control for increased privacy and security.” For more information about Gira’s G1 and E2 Design Line ranges, go to: www.rdr.link/ej031

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sponsored by www.electricalcharity.org

CP ELECTRONICS BRONTE GIRLS’ ACADEMY CP Electronics has transformed the Bronte Girls’ Academy in Bradford, West Yorkshire. Working closely with G&H Building Services, the company turned the old Bradford Council Offices into a new 600-pupil academy. Designed as a ‘free school’, Bronte Girls’ Academy is open to pupils aged between 11 and 16 and is managed by Feversham Education Trust. The Vitesse Plus system is used as part of the many energy saving solutions in the academy. The standalone 7-channel system is installed throughout the classrooms and is connected with daylight-dimming presence detectors to help save energy. The detectors will automatically dim the lights closest to the windows if sufficient natural daylight is available. CP’s long-range microwave detectors will also dim the corridors to a set output, only going back to 100% when movement is detected. Meanwhile, toilets and bathroom lighting are set to switch on or off based on presence detection, whilst the offices also use dimming technology paired with DALI LED lighting. www.rdr.link/ej032

TANSUN CASHMORES METALS

MOSS TECHNICAL TIGERLILY HOTEL Over a decade ago, the Tigerlily hotel was kitted out with Niko’s state-of-the-art home automation system, Nikobus. Niko Home Control 2 (NHC2) has now replaced Nikobus and indeed the original Niko Home Control installation. The Nikobus system installed at the hotel was not the most up-to-date technology available and, in late 2018, it was proposed that an upgrade to NHC2 might be beneficial in cutting costs and allowing for even more advanced control of lighting and the associated lighting scenes within the hotel, including the bar, reception, restaurant and nightclub, Lulu. The upgrade and replacement process took just three days and all work was carried out throughout the night to ensure minimal disruption to paying hotel guests. The new system allows predetermined scenes to be automatically selected without user input, based on the time of day/evening, making for a consistent and reliable ambience for guests to enjoy. The lighting scenes change very slowly so the clientele is unaware of the shift in lighting. However, if required, the lighting can be tweaked via an iPad and in the event of an emergency, the lighting can be instantly increased to allow staff and guests more clarity and a safer exit pathway. www.rdr.link/ej033

Tansun has installed 26 Apollo heaters at Cashmores Metals in Walsall, a specialist coil processor in stainless steel and aluminium. With shutter doors constantly opening and closing and large open spaces, warehouse heating seems almost impossible. For warehouse use, Tansun’s Apollo range was designed to solve heating issues in problem areas such as factories, gymnasiums, warehouses and places of worship. With more than 30 models to choose from, this established product has been proven by Tansun for more than 30 years. The heaters come with high power options, special long-lasting aluminium reflectors, a focused energy beam and a high intensity heat unrivalled by other forms of heating for these environments. Nick Godward, Production Engineer at Cashmores Metals, commented: “The benefit of the heaters is the localised heating, as we no longer have to heat vast areas that are sometimes unoccupied. The staff are pleased with the heaters and we have found the energy usage to be negligible in comparison to the kerosene floor heaters we had before. They were very ineffective and, with our six-metre roller shutter doors being opened throughout the day, the heat that had generated would dissipate very quickly.” www.rdr.link/ej034

DIETZEL UNIVOLT HMS CAMBRIA Dietzel-Univolt has supplied a range of cable containment products to contractor Blues Electrical via Independent Electrical Supplies, Newport, as part of an £11 million new build development at HMS Cambria. The new HMS Cambria building in Cardiff Bay will deliver state-of-the-art training and education facilities as well as accommodation and office suites alongside social and fitness areas for use by the Royal Naval Reserve, Royal Marines Reserve and University Royal Naval Units. Work is set for completion in March next year, when the site will become the new centre for Maritime Reservist across the region. Blues Electrical will carry out a full electrical installation at the site. The firm has opted for the Univolt conduit with an LSF (Low Smoke Flame Retardancy) specification, as well as a range of accessories and its latest product offering, the quick fix wire basket. Marc Gunter of Blues Electrical said: “The choice for us in specifying the LSF conduit was a simple one – it’s a quality product that has strong fire resistant properties and the price difference is nominal compared to a standard uPVC conduit. Given the environment in which the product is being installed, this made perfect sense and the specification has been well received by the end user, the MoD.” www.rdr.link/ej035 PROFESSIONAL ELECTRICIAN November 2019 79

PRODUCTS & BUSINESS SOLUTIONS

Gary Fisher of Lougar Electrical weighs up DEWALT’s new steel anchor offering as he tries out the Wall-Dog.

ANCHORS AWEIGH t seems that getting the right type of fixing is becoming just as difficult as the job itself; you could get into trouble if you don’t get it right. Let’s face it, we’ve all seen items which are not fixed correctly, are loose or even dangerous. DEWALT, however, have come up with a fixing screw which will cover most situations, and additionally save you time. Items now need to be able to withstand premature collapses in the event of a fire or extreme heat, thanks to the new wiring regulations, so there is more demand for this type of fixing. When it comes to a fixing that makes use of a plastic wall plug, it will always fail under severe temperature. DEWALT Wall-Dogs will not, so there are no excuses for not abiding by the latest rules. The DEWALT Wall-Dog is an all steel, one-piece screw anchor, providing an all-metal fixing solution. It requires no plug and, with its carbon steel body and deep cutting, corkscrew-like threads, it provides smooth entry and powerful hold. It comes in a variety of different sizes, and can also be used for both brick and wood-type fixing materials! The screws are also available with white-tipped heads, allowing for a much cleaner or decorative

finish, especially when the screw head might be visible. Screw fixings are not always concealed, so this is great for certain situations such as metal cable tray installation, industrial situations, or even something as simple as hanging a picture. The screws are easy to use; when the material is wood, or a similar softer masonry type, then they are able to be screwed in with the aid of a straightforward driver or battery driver. If the material is a harder substance, such as concrete, then it’s recommended

by DEWALT to drill a 5mm pilot hole first. The hole is slightly smaller in diameter than the screw itself, which allows the screw to fit tightly without the use of a wall plug. In all the installations I have been on, the most common size of screw used is up to 1.5” in length. With the Wall-Dog, longer lengths are available, which could be used for heavy-type items or if the item that needs to be fixed has a thicker mould. However, these longer lengths have hexagonal heads, which makes them a little more annoying, especially when there is no hex bit in the box to use. Granted,

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most of us can lay our hands on one of these, but it would be easier if we didn’t have to hunt for one – this is where the time saving aspect goes out of the window. The Wall-Dogs are not the cheapest type of screw on the market but, if there was ever a fire-related incident, you would be glad you invested in a suitable product. The product has recently gained an F120 fire rating. It’s also important to remember that, as you don’t require a wall plug (and possibly not a pilot hole either), there will be time and money savings. Overall, I would definitely use these all the time, but they are not as cheap as a box of screws and wall plugs. This will have to be taken into consideration when purchasing, but I’ll certainly use them when it comes to the issue of fire safety – this should be a priority, regardless of cost. To view a video showing the fire testing process used for the DEWALT Wall-Dogs, visit: www.rdr.link/eh03

PRODUCTS & BUSINESS SOLUTIONS

Gary Fisher drills down into the pros and cons of the Bosch GDR 18V-200 C Professional Impact Driver and ProCORE batteries. y first impression was how surprisingly small and compact the drill is. I immediately thought of an upcoming job I have, and how this drill would work wonders for getting into the cupboard areas – I wasn’t wrong. However, it didn’t come in its own carry case. This isn’t really an issue, as it now stays in my own tool kit, and it can fit into one of my spare plastic boxes when it’s not required on-site. For a small-sized drill, it certainly has some kick to it. Once you pull the trigger, the torque power is evident. It comes with an LED for those less illuminated areas, such as in tight cupboard spaces. Bosch Professional drills always seem to feel ‘just right’ when it comes to the handle – it’s comfortable and I had no aches or pains after continued use. As

DRILL SEEKER with most drills on the market, the motor is brushless, so it requires less maintenance and is longer lasting. One other feature which I have not seen on other drills to-date is that it has Bluetooth technology built-in, allowing you to check the status of the drill through the Bosch Toolbox App. This is the future, and I think youngsters will be all over this on their mobiles. The drill comes without the battery and charger unit, but I was lucky to have the chance to trial the new range of ProCORE18V batteries as well. As I use other Bosch Professional battery-powered tools, I also had the charging unit to hand. It is becoming more and more evident that, once you take a liking to a certain brand of tool manufacturer, you lose the need to keep purchasing chargers or other batteries. Hence, renewing or

replacing tools – due to some undesirable who has walked off with them – is now much easier and, crucially, more affordable. The battery I was given was the ProCORE18V 4Ah and, once it had full charge, I had no need to charge it again. It’s simple to know when you need to charge due to the easy-to-see LED panel. The technology behind the new battery range is superb – we shouldn’t need countless amounts of batteries when one is all we need. It’s a case of ‘out with the old, in with the new’. As it is smaller than other drills in my kit, I feel this drill is going to get plenty of use. It is easier to carry around, even if it’s not always in its carry case. To view a demonstration video, explaining more about Bosch’s ProCORE battery range, go to: www.rdr.link/eK037

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TESTING, TESTING… Reece Fitzhardy tries out the ProInstall-75-UK MFT from Beha-Amprobe. hen it comes to MFT units, electricians now have more choice than ever with an array of brands and products available to meet our specific needs. Sitting at the entry level section of the market, the ProInstall-75-UK MFT from Beha-Amprobe is a nicely built unit that arrived with a nice selection of accessories, including a standard test lead set, fused probes, crocodile clips, a mains lead, extender probes, zero adapter, a manual on CD, test certificate and batteries. There is also a crib card inside which will remind the operator what the various options are for each test. The zero link shorts out the plug as fitted to the mains lead, with the reading then stored and negated from the tests as necessary. Once it’s zeroed, it will remain through each power off. Furthermore, the protective red flexible shroud covering the outer shell should provide sufficient protection for even the most rough usage. So what about the most important aspect – the testing options available? This product has numerous tests available: voltage/frequency, insulation (250V, 500V

and 1,000V), continuity, loop impedance (both L – N and L – PE), either non-RCD trip or two wire high current, RCD and RCD ramp tests, three phase operation and phase rotation. The voltage and frequency selection, as well as the insulation test with the three available voltages, are self-explanatory, while the continuity selection is available to 2,000 Ω. Impedance (Z) can be tripping (two wire high current) or non-tripping (two or three wire). Safety feature Furthermore, a two wire high current test between L-N is also possible, and should not trip RCDs. A nice safety feature here comes with the fact that the unit warns the user if voltages between the neutral and earth will give a possible false reading. If a 10mA RCD is under test, there is a ‘work around’ for this, as described in the manual. The RCD tests can be completed in automatic mode, which then removes the extended ‘leg work’ if the socket happens to be positioned some distance away. Readings are then temporarily stored for the device under test. The unit is capable of testing different types of RCD, including various currents – type AC and A.

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One useful feature, if you have a slightly out of spec RCD, is the ramp test option, which will determine at exactly what current the device will trip (180 and 0°). In terms of usability, I found the unit to be very easy to get to grips with, and the bright and clear display screen gives very clear readings for the user. One slight niggle from my side is the fact that the back light doesn’t illuminate the selector switch. I have set this incorrectly in dim light, so it would help if the switch tip was marked with a bright colour, like orange or yellow. Secondly, it does not come with a cover. This could mean that screen damage may result from dropped objects – something that I’m sure we’ve all done in the past. An earth extension lead would also be a useful addition to the unit’s selection of accessories. That said, this is a nice, value-for-money unit and the features are more than adequate for the price point. The supplied crocodile clips and remote test lead make it even easier to operate. For more information on the ProInstall-75-UK from Beha-Amprobe, visit: www.rdr.link/ej038

PRODUCTS & BUSINESS SOLUTIONS

Steve Hewish, Approved Electrician at Turrell (Electrical Contractors), is in the fast lane this month as he reviews Scolmore’s 20A Fast Fit Flow Connectors.

THE FAST SHOW

which requires no screws or fiddling for the installer. Clearly this has a significant impact on installation/maintenance times, with users able to save as much as half the time that they would spend working with screw terminal versions.

No screws or fiddling Designed to be compatible with all current Scolmore Click Flow products (connectors, splitters, distribution boxes and ceiling rose), the Fast Fit Flow Connectors are very simple to operate, utilising a tool-free ‘push fit’ mechanism

Increased size Having previously used Scolmore’s Essentials Flow range (CT101C), I was pleased to see that the size of these new connectors has increased so there is now room for four multi-core cables, which is particularly useful. Another feature that I particularly like about these connectors is that, because they have a loop terminal, they can be used as a joint box. If I was to make one suggestion for an improvement to the product, it would be that the quarter turn fixings don’t feel as secure as I’d like, so perhaps there could

hen we electricians hear of any new solution that can save time during our working days, our ears generally tend to prick up. This was certainly the case when I learned that Scolmore had launched a new range of 20A 3 & 4 Pole Fast Fit Flow Connectors to help installers safely connect/disconnect luminaires or applications in areas that require quick installation and regular maintenance. As such, I was naturally keen to have a go.

be a different solution incorporated in future versions to overcome this issue. That said, I’m a big fan of these connectors and they’re very much a representation of the type of modern product development that companies like Scolmore are undertaking to make the lives of electricians that little bit easier on a day-to-day basis. I’m confident that anyone using these connectors will see an immediate increase in productivity during their day-to-day work which, as we all know, is so vital to electrical professionals. Next time you’re in the market for this type of product, you’d be wise to go with the Flow! To view a promotional video offering more details about Scolmore’s Fast Fit Flow Connectors, go to: www.rdr.link/ej039

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ADVERTISING FEATURE

FIRESAFE AND WREXHAM MINERAL CABLES: THE PERFECT PARTNERSHIP ormed in 1994, Firesafe continues to be at the forefront of the UK’s fire safety equipment industry and has a wealth of experience in providing fire safety solutions. The company is ideally located to distribute its extensive range of market-leading products – such as Firesafe fire alarms, Lightsafe emergency lighting, and Caresafe nurse call systems – with contractors, installers and specifiers able to take advantage of individually-tailored training days that are designed to give in-depth product knowledge on the full range of fire safety, emergency and disabled equipment. Firesafe’s free-of-charge estimation service allows wholesalers to further support the customer as part of a complete offering. All system estimations are carried out by a fully trained FIA internal technical team, along with Regional Sales Managers, with all product groups supported. As part of Firesafe’s 25th anniversary, and such is the confidence it has in its partnership with Wrexham Mineral Cables, the company is offering a Platinum 10-year warranty (both on- and off-site) on purchases of any Firesafe system. Whatever your requirements, Firesafe ensures that you’re provided with the highest levels of product quality, value and service expected in today’s competitive marketplace.

Typical applications Wrexham Mineral is used in multiple applications and some very sensitive environments, but the cable can be used on an array of communication systems, emergency lighting installations, emergency shut-off systems (oil & gas), fire alarm systems, smoke control systems and sprinkler systems.

WHO ARE WREXHAM MINERAL CABLES? Wrexham Mineral Cables are the UK’s only manufacturer of fire resistant mineral insulated cables utilising continuous production technology, with specially designed equipment housed in a 5,000 square metre purpose-built factory in Wrexham. Established in 1989, WMC's initial purpose was to supply UK wholesalers with fire resistant mineral insulted cables. In 2008, the decision was taken to start exploring overseas potential and, in the last ten years, WMC has supplied cable systems into a number of major clients, including Aramco, BP, KNPC, ADNOC and KOC, becoming the number one tier supplier for fire resistant cable systems. Product details Mineral cables can operate continuously up to 250˚C and in excess of three hours at over 950˚C. Its unique construction means it does not aid flame spread, releases zero acidic or toxic smoke or gases, does not use any polymers or tapes to aid fire protection and doesn’t need conduit to assist mechanical protection. When used in conjunction with WMC ATEX & IECEx approved cable glands, a natural and complete barrier to the transit of gas, dust, or explosion is formed. The Exd Cable System from WMC is significantly less time-consuming to install, offering a saving to installers and maintenance contractors.

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Approvals Product approvals includes BS EN 5839 & BS EN 50200 ENHANCED PH120 & BS 8434-2. Wrexham Mineral Cables also hold approval to BS 6387 CWZ. WMC cable gland systems also boast multiple approvals. Peace of mind Wrexham Mineral Cables now offer a full 30-year system warranty and the brand is recognised globally as the number one choice in fire survival cables. So, thanks to this unique partnership, two well-established companies within the fire alarm industry are able to bring years of experience to support customers within all areas of the market. For more information about the Firesafe range of fire safety equipment, go to: www.rdr.link/ej040

Products round up

FLUKE MFT Kit Special Offer

V-TAC Q4 Catalogue V-TAC has developed its catalogue with a range of LED lighting products for residential, commercial and industrial areas. The additions are included in the V-TAC Pro Series, the Essentials series and the SMART series. Notable additions to V-TAC’s catalogue include: 160 lumen-per-watt Super Bright series of Reflector Highbays, Tubes, Grill Fittings, Highbays, Waterproof Fittings and 60x60 Panels; PIR Floodlights; High Lumen Waterproof Fittings (140 lm/W); Magnetic & Linear Track Lights; CCT Changing Dome Lights (WiFi App & RF Control); Dimmable IP65 Fire-Rated Downlights; SMART Bulbs with Microwave & Daylight Sensor & Smart RGB Bulbs with RF Control; and SMART high-definition cameras with full-colour night vision, as well as other features like remote mobile or PC viewing. The PRO Series comes with a five-year warranty, whilst the Essentials & SMART series both have twoto three-year warranties. To view the catalogue visit: www.rdr.link/ej041

Until 31st December, Fluke is offering two money-saving 1660 Series Multifunction Installation Tester Kits. The Fluke 1664 UK-TPL KIT comprises a 1664 FC multifunction installation tester with free Fluke DMS Data Management Software and a free Fluke T150 2-pole Voltage and Continuity Tester. The Fluke 1663 UK-TPL KIT comprises a 1663 with free Fluke DMS Data Management Software and a free Fluke T130 Voltage and Continuity Tester. The Fluke 1664 features an Insulation PreTest function that, if it detects an appliance is connected to the system under test, will stop the test whilst also providing a visual warning. Insulation PreTest helps avoid accidental and costly damage to peripheral equipment. Also, the Auto Test function does five required installation tests in one sequence; this reduces the number of manual connections, decreases the possibility of making errors and reduces test time by up to 40% compared to previous Fluke models. The Fluke 1660 Series of MFTs are designed to verify insulation resistance, loop impedance, resistance of the earth connect, resistance to earth, RCD performance in TT and TN systems, phase sequence and loop/line impedance and RCD tests in IT systems. www.rdr.link/ej042

CED Airmaster Infrared Heaters CED has expanded its Airmaster brand to include a new range of infrared heaters for patio or general outdoor use. Free-standing heaters include 2kW IP34-rated Pedestal and Tower heaters, finished in black and complete with remote controllers, plus a 2kW Mini pull cord option. Completing the range is the current 1,200W Quartz heater plus a selection of replacement elements. The new infrared products join the fan, convection, oil-filled radiators and panel heaters already in the range. www.rdr.link/ej043

HELLBERG SAFETY SECURE ACTIVE Headsets Hellberg Safety has introduced the SECURE ACTIVE headsets, which enable workers to communicate safely with colleagues, hear signals and other important information, all whilst protected from hazardous noise. The built-in, level-dependent microphones provide perfect directional hearing with an electronic protection system that limits all sounds through the speakers to a safe sound level. The replaceable headband and ear cushions allow for regular replacement for a long-lasting and high-performing product. For optimal safety, communication radios and other sound sources can be connected via the external audio input. The headsets come with 2 x 1.5V AA batteries for up to 1,000 hours use, and are also fully compatible with Hellberg’s SAFE Visor System. Hellberg Safety’s specialist PPE products include highly advanced hearing protection products, face protection and communication solutions for personal wellbeing on-site. www.rdr.link/ej044 PROFESSIONAL ELECTRICIAN November 2019 91

Products round up

NVC LIGHTING ‘Winter Ready’ Brochure NVC Lighting has released the Winter Ready brochure and, with winter approaching, and the resulting colder, shorter days, outdoor lighting becomes imperative. In return, the need to use more artificial lighting incurs additional costs towards utility bills. Whether you lack adequate lighting, or your current solution is not energy efficient, this booklet contains solutions for both. Due to the innovation of LED technology, you can potentially save up to 80% in comparison to traditional lighting solutions. To view the brochure visit: www.rdr.link/ej045

FLIR SYSTEMS CM94 High-Current Clamp Meter FLIR Systems has announced the CM94 2,000A AC/DC electrical utility clamp meter. Designed to tackle high current electrical measurements in demanding utility and industrial job sites, the CM94 features an oversized jaw to easily manage larger conductors and busbars. With CAT IV-1,000V overvoltage protection, the FLIR CM94 works on relays, distribution panels, vaults, switchgears and switchboards, as well as on service conductors, feeders and production power lines. The clamp meter’s 55m jaw easily clamps around large conductors or multiple conductors at once. With True-RMS (root mean square) to measure alternating voltage or current, and Low Impedance (LoZ) mode to clear ghost voltages, the FLIR CM94 provides accurate testing capabilities to get the job done right first time and keep electrical workers safe. The IP40-rated FLIR CM94 is drop-tested to withstand a two-metre drop from a ladder or into a utility vault. www.rdr.link/ej046

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ESP Internet Protocol CCTV Range ESP has developed the IP (Internet Protocol) CCTV range to offer superior, reliable and straightforward installation solutions for a range of applications. The range features POE (Power-Over-Ethernet) which enables the camera and power feed to be wired in Cat5e cable up to 100m without the need for additional power. A single Ethernet cable provides both the power and the HD digital feed, with just one cable per camera, and multiple cameras can be installed anywhere on the network that the NVR is connected to. There are two distinct IP ranges available – the REKOR IP 2 Megapixel range which has been tailored for the domestic market, and the HDView IP 5 Megapixel range which is aimed at larger applications with a wide choice of NVR and camera selection. All NVRs have features that include remote monitoring via the ESP IPView App, H265 compression, motion record activation and they are supplied with dependable surveillance hard drives for peace of mind. www.rdr.link/ej047

FINDER 5S Series General Purpose Relays Finder’s 5S Series range of 2, 3 or 4 contact 7-10A general purpose relays are ideal for general switchboard installations, industrial automation panels, auxiliary relays and interfacing. Available in AC & DC coils, as well as options for screw-mounted, screwless and push-in terminals, Finder’s general purpose relays offer flexibility to all users. On the 2- and 4-pole types, there are lockable test button and mechanical flag indicator options available. Also available are integral LED and coil suppression. There are a wide range of sockets and accessories available for the 5S Series relays. These include the 94 Series sockets, metal retaining clips, jumper links, identification tags, modules and timer modules, which give users complete personalisation to their requirements. www.rdr.link/ej048 PROFESSIONAL ELECTRICIAN November 2019 93

Products round up

The Eco has landed Ariston has introduced the new Pro1 Eco range of electric storage water heaters. Available in 50, 80, and 100 litre capacities, the stylish units feature a display that allows for easy operation, with simple temperature setting and control for advanced performance. As a result, the products are suitable for use throughout a variety of light commercial and domestic applications, including large kitchens, public washrooms and healthcare environments. The Pro1 Eco range takes advantage of Ariston’s specialist WaterPlus technology, which keeps any incoming cold water at the bottom of the tank, ensuring it does not immediately mix with the stored hot water. This results in up to 16% more hot water being available. The energy efficiency credentials of the electric storage water heaters are enhanced by Ariston’s ‘ECO EVO’ function – an electronic control with automatic learning software, which enables users to achieve energy savings of up to 14%; that’s equivalent to running an A+ rated fridge-freezer for approximately a year. The new products also achieve an ErP ‘B’ rating across the range. Units also boast Ariston’s renowned anti-legionella function. Once a month, the Pro1 Eco automatically increases the water temperature up to 65°C, in order to eliminate the risk of legionella bacteria developing. This feature ensures the product is ideal for use in applications such as hospitals, schools and care homes. Another key feature of the Pro1 Eco is Ariston’s Titanshield technology for optimal tank protection. This sees the inner surface of the tank enamelled with a layer of titanium, an anti-corrosion and rust-resistant material, which prevents the surface from corroding – even when in contact with warm water. The titanium’s natural properties are boosted by the action of a large magnesium anode that stops the oxidation reactions on the tank’s inner surface, helping to prolong the life of the water heater. Ariston’s Pro1 Eco range is KIWA approved and all units are supplied with an unvented kit and a five-year manufacturer’s warranty as standard. For more information about the Ariston Pro1 Eco range of electric water heaters, go to: www.rdr.link/ej049

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DUNDERDON Jackets Range Expanding its available range, Dunderdon – part of the Hultafors Group, which also owns Snickers Workwear – has added two highly technical, street-smart jackets for tradesmen and women. The additions include the J56 Vantage Jacket made of highly durable Vantage fabric, developed for tough work in rough conditions. It features lightweight padding, whilst the garment offers everything you need to look smart at work. Meanwhile, for the upcoming colder months, the S27 Polartec Jacket is an available solution. Made of Polartec Power Stretch Pro fabric, this mid-layer jacket delivers excellent moisture management and four-way stretch for an active user. It also has handy front pockets and additional features like a cell phone pouch and thumb openings at the sleeve ends. It’s available in either black/brown or navy/orange colour combinations. www.rdr.link/ej050

METREL 3-Phase Active Switch Adapter Metrel has introduced a 3-phase switch adapter – the A1507 – that can be used with either of the Metrel touch screen MFTs – MI3152 and MI3155 – through a Bluetooth connection. The testing automation comes from the Autosequence function of both testers. It can be connected to the installation using croc clips or, more conveniently, using a CEE 5-P 16A or 32A plug. The instrument measures full insulation resistances, L1-L2, L3-N-PC, the continuity of protective conductor, earth resistance, resistance N-PE, full RCD testing and loop impedances using the unique Autosequence function to drive the tests and the connection switching in the adapter. The combination of the dot matrix screen and the Metrel memory management system makes the use of the downloading system uniquely simple, speeding up the certification process. www.rdr.link/ej051

Products round up

Aico CO Alarms: saving lives, adding revenue Cases of suspected Carbon Monoxide (CO) poisoning have increased by a third over the past five years. Data from the UK Fire and Rescue Service shows that cases rose steadily from 2,450 incidents in 2014 to 3,249 in 2019. The worst affected region is the South East, which is up a staggering 415%. The only way to detect CO is to fit a CO Alarm. Aico CO Alarms are available in lithium battery and mains-powered models, all using Aico’s high performance, proven electrochemical CO sensor which has a ten-year life. All come with Aico’s multiple award-winning AudioLINK data extraction technology, which enables real time alarm data (e.g. number of times tested and details of alarm activations) to be extracted directly to a smartphone or tablet via an App which creates an Alarm Status Report. It identifies any issues enabling action to be taken immediately. Aico’s latest 3000 Series features two CO Alarms: the Ei3018 and the Ei3028 Multi-Sensor Heat & CO Alarm for use in kitchens. The 3000 Series also incorporates a mains powered Multi-Sensor Fire Alarm and single sensor Optical and Heat Alarms. All alarms in the Series use the same easi-fit base and

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feature intelligent sensors, AudioLINK data extraction and SmartLINK wireless interconnection and whole system data monitoring capability. If you fit mains-powered Smoke Alarms, then consider adding CO Alarms to the system. They can be easily incorporated into a Smoke Alarm system, as long as you also fit an Alarm Control Switch to enable residents to identify which alarm has triggered – Smoke or Carbon Monoxide. It’s extra revenue for you and, more importantly, a life saving device. To download Aico’s free information card on the symptoms of CO poisoning (pictured above), go to: www.rdr.link/ej052

V-TAC ECO & UNI Batten Range V-TACâ&#x20AC;&#x2122;s portfolio of ECO Battens minimise energy and maintenance costs, raise light levels and offer a cost-effective installation in any application. The luminaires feature a matching footprint to most typical fluorescent battens, enabling a quick one-to-one replacement of existing fittings. The ECO Batten boasts a practical rear spine with an incorporated gear tray and TP(a) rated diffuser with quick release that allows for hassle-free electrical connections and mounting onto ceiling beams. The UNI Batten range of luminaires has become increasingly popular amongst educational and commercial establishments across the UK, combining versatility and aesthetic appeal with the premium performance, low-maintenance and efficiency of LED in a single affordable package. With high-efficiency TP(a) rated polycarbonate diffuser and a steel gear-tray secured by screw-retained end caps, the UNI Batten extracts the most out of its high-quality Samsung LED chipboard and provides the durability needed to withstand the rigours of a busy environment. Its robust construction, high LORs and extended lumen maintenance ensure that the luminaire performs with minimal maintenance whilst operating at an average efficiency of 120lm/W. The ECO & UNI Batten ranges are not engineered purely for functionality, as they also offer an attractive minimalist aesthetic, designed with modern educational and commercial establishments in mind. Both the ECO and UNI Batten rages are compatible with a range of integral sensors and dimming options that boast the functionality of maximum control. Options include presence detection, daylight regulation and driver programming, without incurring the cost of extra modifications to the internal or external wiring needed for standalone sensors or drivers. www.rdr.link/ej053

Products round up

HIKOKI POWER TOOLS 36V Cordless Disc Grinder HiKOKI Power Tools has launched the G3623DA Multi Volt 36V Cordless Disc Grinder with Brake System. Equipped with a high-power Multi Volt battery and a highly efficient brushless motor, the G3623DA cordless disc grinder can deliver the power of a corded tool and more. Its cordless and lightweight design makes cutting and grinding work easier. When it comes to grinding steel, the G3623DA beats the HiKOKI G23SU AC model, with a thrust of 29N, using an Ă¸230mm depressed centre wheel and has the same mortar cutting speed. The product also features a brake system that shortens the time between turning off the tool and the motor stopping. Also, the specially designed structure hinders separation of the wheel whilst braking, enhancing user safety. The G3623DA Grinder is dust- and water-resistant, offers overload and anti-restart protection, a soft-start function and Auto Mode. www.rdr.link/ej054

MARK LIGHTING LED Non-Corrosive Fittings Made of a robust polycarbonate material, the Mark Lighting non-corrosive fitting is IP65 rated, making it ideal for exterior applications. It offers a high lumen output of 120 lumens per watt, as well as a low wattage, making it a highly energy efficient lighting source. As a safety measure, the gland is 20ml so fits neatly into the conduit, plus the unit is sealed to ensure it is tamper-proof, an important benefit for underground and multi-storey car parks. Another benefit is that the fittings can be connected to create a continuous linear arrangement. Mark Lightingâ&#x20AC;&#x2122;s non-corrosive fittings are available with a two-year warranty. www.rdr.link/ej055

M2 ELECTRICAL Brushed Stainless Steel Screwless Range M2 Electrical has introduced a range of screwless products to complement its existing decorative finishes. Despite having a plate profile of less than 5mm, M2 Premium products are ideal for new build or refurbishment as they are suitable for existing standard depth wall boxes. A common problem with decorative finishes is the spoiling by unsightly finger prints. Here, a further protective lacquer is applied to avoid this and the easily removed cover plate can be stored until any necessary decorations are complete, leaving behind a perfectly safe electrical accessory with no access to live parts. Extending the range are grid products with plate formats, from one- to 12-gang, which offer the varied functionality that is often required on a larger installation. M2 Premium carries a 25-year guarantee. www.rdr.link/ej056

C.K TOOLS Coloured Socket and Spanner Sets C.K has updated its socket and spanner sets by adding colour coding to make easy work of tool selection. The range includes the 12 Piece Coloured 3/8” Sure Drive Socket & Spanner Set (T4659), the 17 Piece Coloured 1/4” Sure Drive Socket Set (T4658) and the Colour Coded Combination Spanners (T4346M12ST). Both the T4659 and T4658 sets comprise high torque 12 point sure drive sockets, allowing the installer to apply torque to the flat of the nut (rather than the corners) to avoid rounding off. They are also both made from Forged Chrome Vanadium steel for superior strength and quality. The T4659 set contains 3/8” sockets and combination spanners in measurements of 8, 10, 13, 15 and 17mm. The T4658 set comprises 1/4” sockets measuring between 4 and 14mm. The T4346M12ST set is encased in Drop Forged Chrome Vanadium steel, which is hardened and tempered for strength and durability. www.rdr.link/ej057

Products round up

‘Mini’ AFDD is a ‘mighty’ solution With over 13,000 electrical fires in the UK each year, Wylex has launched a new, smaller Arc Fault Detection Device (AFDD) that disconnects the power supply when it detects a dangerous arc fault in a circuit. With recent research finding that a third of electricians do not install AFDDs because they take up too much space, Wylex has developed a ‘mini AFDD’ that is much smaller than other models, taking up only one way in a consumer unit. Loose connections, damaged insulation, crushed cables, poorly made connections, frayed conductors, and deterioration of insulation materials that age over time can all lead to arc faults in electrical circuits. These are not detectable by MCBs or RCDs and are often not visible. If they remain undetected, they can cause overheating which can ignite nearby flammable materials. The new mini AFDD, which has been built and tested to recognised quality and safety product standards, incorporates three products in a single module: a mini circuit breaker (MCB), a residual-current circuit breaker (RCD) and an AFDD, providing overload, short circuit, earth leakage and arc fault detection. The product is also retro-fit compatible, making it a quick and simple upgrade for existing installations. According to Government statistics, nearly a fifth (18%) of all primary fires (those that result in harm to people or damage to property) were caused by electrical distribution or appliances. Regulators have recently acknowledged the importance of AFDDs in helping to prevent such fires by recommending their use in the 18th Edition of the Wiring Regulations. In doing so, regulators are clearly stating that the device will provide significant safety improvements, and ignoring the recommendations could mean that responsible individuals run the risk of being culpable if it’s found that a fire could have been prevented by an AFDD. To download a copy of the Wylex miniature AFDD brochure, go to: www.rdr.link/ej058

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Products round up

BOSCH FlexiClick 12V Drill Driver

ERA DoorCam Smart Home WiFi Video Doorbell ERA has announced the ERA DoorCam Smart Home WiFi Video Doorbell. Using a smartphone App, it allows homeowners to view callers and talk to them in real-time, whether they are home or not. The DoorCam offers peace of mind through a motion detector which alerts homeowners when someone has arrived. Once DoorCam is installed, the homeowner can simply plug in the WiFi chime which comes as standard, with the option to connect up to four more chimes across the home. There are no Cloud-based recording fees for the first 12 months and, once fees are introduced, there will always be a free option available (dependent upon the amount of recording required). DoorCam allows for two-way talk with high quality sound with adjustable volume, brightness and colour to suit. The video camera has a 180° field of view and records in 720pHD resolution. Infrared night vision ensures 24-hour operation. www.rdr.link/ej059

Bosch has updated its FlexiClick 12V cordless drill driver by adding a brushless motor. The Bosch GSR 12V-35 FC Professional Drill Driver is, therefore, faster, stronger, more efficient and longer-lasting, as well as maintenance-free. The top speed has been increased by 35% to 1,750 rpm, whilst maximum torque has been raised to 35 Nm for hard screwdriving applications and 20 Nm for soft. The maximum drilling diameter in wood has been increased to 32mm – up 70% – and the maximum screw diameter has risen to 8mm. At just 115mm in length, this is the shortest cordless drill driver in its class. It can be used on its own, without adapters, using its integral magnetic bit holder. The tool also features a convenient belt clip and an enlarged soft grip area for additional comfort. Alternatively, connection to an adapter takes moments. Simply place the adapter onto the FlexiClick interface and turn the locking ring clockwise. A click and control indicator on the adapter confirms secure attachment. The adapters include: a Bit Holder, a Drill Chuck, an Angle Adapter and an Off-set Angle Adapter. www.rdr.link/ej060

ESP Emergency Light Test Switch ESP’s Duceri range of emergency lighting products has been expanded to include two emergency light test switches. Designed to test batteries, lamps and duration function of emergency lighting luminaires in accordance with current emergency lighting standard BS 5266, the products will help building owners and responsible persons to maintain compliance. The automatic, key-operated emergency lighting test switches are permanently wired to the emergency luminaire supply. The key switch is used to interrupt the supply for a pre-programmed period of time. At the end of that period, the supply to the luminaires is automatically reinstated, so there’s no risk of depleting the batteries in the emergency fitting by leaving them connected for prolonged periods. There are two models to choose from – standard LED display or countdown digital display. They each feature four pre-programmed test intervals – 10 minutes, 30 minutes, 60 minutes and 180 minutes. There is the option for an audio buzzer alert for completion of duration test. They are compact in design – measuring 86 x 86 x 33mm – and are manufactured from the antimicrobial material urea formaldehyde. Watch a promotional video at: www.rdr.link/ej061

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Brit-ish made range can get you out of a ‘fix’ Did you know Walraven’s Britclips electrical fixings and the RSWB (Rapid Sliding Wall Bracket) are made in Britain? Although Walraven is a global company, with manufacturing facilities across Europe, it is proud to manufacture some key product ranges right here in the UK. Walraven’s General Manager, Tracey Williams, says: “We’re very proud to be a British manufacturer. Our Britclips products are very popular in the UK and having them made here helps to ensure we have a continuous supply for the market.” Britclips include over 140 different fixings for electrical installations such as cable run clips, threaded rod hangers, beam clips, purlin hangers, roof deck hangers and more. Alongside the clips there is the hugely popular RSWB bracket for quick fixing of electrical boxes in stud walls. So if you like the idea of supporting UK manufacturing, Walraven’s Britclips could be the fixings for you! What is the Britclips RSWB? The Britclips RSWB from Walraven is an adjustable stud wall bracket for faster mounting of electrical boxes, conduit and more within stud walls. Voted as a 2018 ‘Top Product’ award winner by PE readers, the RSWB is a time and cost-saver, and offers greater flexibility compared to traditional methods of fixing within stud walls. The bracket is supplied in two connected halves which simply snap apart and slide together to fit studs 40-60cm apart. The fixing plates on the ends can be bent along the marker holes to allow fixing at different depths within the wall. If you’d like to try the Britclips RSWB out for yourself, you can request a FREE sample by going to: www.rdr.link/ej062

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NAPIT BS 7671:2018 On-Site Guide NAPIT has released a new guide to provide practical and useful solutions for a number of different installation types, giving electrical contractors the knowledge they need to comply with the requirements of BS 7671:2018 of the IET Wiring Regulations. ‘On-site Solutions – Practical Solutions to Electrical Installations in accordance with BS 7671:2018’ covers Parts 1 to 7 of the standard. It includes useful solutions for electric vehicle charging installations, surge protection devices, smart home installations, outbuildings, RCD selection, consumer unit considerations, selection of equipment, designing circuits, safe isolation of electrical supplies, inspection, testing and certification, and documentation. It also covers the main requirements of the Building Regulations associated with electrical installation work in England and Wales, covering relevant Health and Safety legislation. www.rdr.link/ej063

VENT-AXIA Silent Fan Range The popular Silent Fan range from Vent-Axia now has six new models added to its collection, offering increased flexibility and choice for electricians and households. With the new Silent Fan range boasting an IP45 rating and including variable speed models, humidistat options and up to a five-year warranty, it has never been simpler to select the right silent fan for the job. And with all models offering ultra-low sound levels, households will be able to relax in comfort, free from noise-related stress, therefore reducing call-backs for electricians. Now offering an IP45-rating (for Zone 1), the new Silent Fan makes installation easier and safer since the fan can be safely installed in the splash zone. This makes the product ideal for bathrooms and shower rooms of all sizes. Silently improving indoor air quality, the new Silent Fan is now also available with a wider range of control options so customers can select the fan that is right for them. www.rdr.link/ej064

Products round up

UNILITE New Worklights Range Unilite has launched a new range of worklights, targeted at transforming the lives of electricians. Available in four varieties, with differing light intensities and additional features, the range consists of: SLR-500 – the most compact light with a 500 lumen output; SLR-1000 – the next step up with a 1,000 lumen output; SLR-1750 – featuring a 1,750 lumen output and built-in powerbank; and SP-750 – offering a 750 lumen output and built-in Bluetooth speaker. All models feature a 180° adjustable handle/stand that can be positioned perfectly for the job at hand. Built into the stand is a folding hook and some strong rear magnets, allowing the lights to be positioned at height when needed. Rechargeable lithium batteries provide their power source and the option to dim the light settings, enabling an extension to their runtime beyond their normal capabilities. www.rdr.link/ej065

MAKITA Multipurpose Heat Gun Makita UK has added a versatile Heat Gun (HG6531C) to its range. The latest addition is simple to use and has been designed to make work on-site easier. It has pre-set functions for a wide variety of tasks including drying, shrinking, moulding and stripping paint and varnish, as well as soldering metal and welding plastic. The heat gun is available in 110V and 240V versions, delivering 1,400 and 2,000W of power respectively. It has five air flow volume settings to produce air flows of between 200 and 550 litres per minute. Using a simple push button on the tool, the temperature can also be adjusted in 5˚C increments from 50˚C up to 650˚C to suit the application. It features 14 pre-set air flow volume and temperature combinations for easy selection of the correct settings for a specific task. www.rdr.link/ej066

LEDVANCE Panel 1200 Direct/Indirect The new Panel 1200 Direct/Indirect from LEDVANCE is a suspended edge-lit, stand-alone luminaire with direct (70%) and indirect (30%) light emission. It, therefore, provides the right lighting for a variety of office requirements in line with relevant office norms. The new luminaires for the Panel 1200 series follow the unified and award-winning LEDVANCE SCALE design language. They also offer flexible mounting options and keep operating and maintenance costs low. The Panel 1200 Direct/Indirect luminaires are now available in two different versions (on/off and DALI) through leading wholesalers. www.rdr.link/ej067

MARTINDALE ELECTRIC PDS & PDSX Proving Units Series Martindale Electric has announced the PDS and PDSX Series of proving units. The proving units enable contractors and maintenance teams to safely and simply prove the operation of voltage indicators, two pole testers and test lamps, plus common 18th Edition tester functions, with voltage measurement ranges up to 440V and 690V. They both come in a durable over-moulded, low profile case, and include an MG3 detachable magnetic hanger. The PDSX Series includes an additional CALCHECK feature for verifying the calibration consistency of multifunction installation testers, providing confidence in the performance of all essential test equipment before and after measurement. CALCHECK makes it easy to verify the insulation and low resistance ranges on 18th Edition testers on-site, making it ideal for identifying potential calibration issues with test equipment prior to certifying a new wiring installation or carrying out a condition report. For simplicity, the PDS Series has a single voltage output whilst the PDSX Series output voltages are stepped with individual LED indicators for each voltage level from 50V to 690V. The voltage levels are matched to common two pole tester thresholds, ideal for identifying potential voltage tester calibration issues. www.rdr.link/ej068

Products round up

Kick-off for installers with Wihaâ&#x20AC;&#x2122;s ElectricVario family Wiha is presenting a new line-up which will deliver the right move, no matter what type of fastening is involved. The ElectricVario Family is a system comprising 83 tools which can be fully combined with one another. In addition to many new 'signings', the newly announced Wiha team also includes existing Wiha solutions in different set combinations. Users will be guaranteed to get through any 'penalty box' efficiently, flexibly and perfectly safely, with their health intact, sinking every screw with a dead aim. The team mission The ElectricVario Family brings together all fastening tools that users need for all types of challenges and fastenings. With different combinations possible, users can compile their own suitable 'line-up' from the entire professional team on an individual basis. Defence The 'new signings' in defence represent two new handle variants. The new PicoFinish electric excels with its slim handle with precision and utmost care. With optimal balance between force and control, the new slimVario electric handle allows users to work ergonomically. Regulars include well-known players such as the small, versatile Stubby electric, the fast-paced, electrically-powered speedE, the LiftUp electric with slimBits in the handle, or the flexibly adjustable torque handle TorqueVario-S electric. Midfield If the screw fastening task requires a 'pass to midfielders', the five

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easyTorque torque adapters or new slimBit extensions, blades and adapters for handles and nut drivers await. Attack Forwards complete the pass and 'strike home', represented by a large portfolio of new and existing slimBits and Âź" hexagon socket spanners. As a result of intensive cooperation with users and the insights into the needs of the market gained as a result, the existing Wiha range has been extended to include many new profiles and bit sizes. The trainers The trainers pull 'individual talents' together: the new 13-piece multifunctional bag, new folding bags or 6- to 12-piece slimBit boxes with belt holsters for easy transport and removal of slimBits. For more details about the ElectricVario family from Wiha, go to: www.rdr.link/ej069

Products round up

CRABTREE Starbreaker Combined AFDD-RCBO Installers can now improve electrical safety without any extra effort with the Starbreaker combined AFDD-RCBO. This new product integrates arc fault detection with RCD and MCB capability in a single DIN module, delivering maximum safety in the minimum footprint. The Starbreaker Mini AFDD provides an extra layer of protection while also helping future-proof installations against ever-changing regulations. Using digital technology to constantly monitor circuit conditions, the Mini AFDD is able to distinguish between ‘operational sparking’ and abnormal activity that could denote a potentially dangerous event. Complying fully with the requirements of BS 7671, this single module AFDD is a two-pole switching device which will totally isolate any faulty circuit or appliance, ensuring peace of mind for installers and homeowners. As an additional benefit, the Mini AFDD-RCBO is an easy-to-fit ‘plug and play’ option that can be installed into any appropriate Starbreaker consumer unit, without the need for special assembly or new busbars. www.rdr.link/ej070

LEGRAND Swiftwire Suspension System Legrand has unveiled its new wire-based suspension system, Swiftwire. Able to suspend products from the brand’s overhead cable management and lighting busbar portfolio, it offers fast installation while also improving health and safety on-site. The Swiftwire system has third party approved safe working loads and comprises high tensile grade (1960N/mm2) galvanised or stainless steel wire and a single diecast mechanism featuring two independent locking channels for maximum joint security. Available in five different sizes, the mechanism’s housing is made from Zamac 5 with stainless steel springs and wedges, making it ideal for use in many corrosive environments. The key-free adjustment on the Swiftwire mechanism allows the system to be quickly and easily adjusted to enable accurate installation. The mechanism’s ergonomic design allows easy installation and handling while wearing gloves. The Swiftwire system is also available in a selection of application-specific packs which come complete with all relevant wire, fixings and mechanisms. www.rdr.link/ej071

XCITE Backlit Panel The xcite Backlit Panel delivers high quality illumination in office, commercial and educational environments, while offering a more competitive price in comparison to edge-lit alternatives. Unlike edge-lit models, the xcite Backlit Panel doesn’t require a light guide, offering a much simpler solution to customers. The Backlit Panel has a total power of only 30W, and with an efficacy of 100 lm/W, is significantly more energy efficient than traditional light sources. Available in neutral white (4000K), cool white (5000K) or daylight (6000K), the xcite Backlit Panel gives customers a choice of colour temperature for their space. With a CRI of 80>Ra and SCDM>5, the colour consistency delivered by the panel creates the ideal working environment. The fitting is also available as an emergency version when used in conjunction with the EM KIT. This converter kit ensures that the xcite Backlit Panel delivers three-hours illumination in the event of a loss of mains power in a severe emergency. www.rdr.link/ej072

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DIGITAL DIGEST

PLAY IT AGAIN SAM (AND RICKY) PE catches up with the personalities behind The Electricians’ Guide to Everything podcast and YouTube channel. ot all entrepreneurs need co-founders, but many of the world’s most successful companies – including giants like eBay, Apple and Twitter – were built by multiple leaders with productive relationships. Unsurprisingly, these partnerships were formed through long-standing friendships, the individuals may have been classmates at school, or even relatives. Others, however, didn’t get along initially, while some are still not amicable. When it comes to the most successful partnerships, there’s usually a common denominator: the pair in question recognise their individual limitations and respect what the other could bring to the party.

Common ground In the case of Sam McDouall and Ricky Howell, the co-founders and hosts of The Electricians’ Guide to Everything podcast and YouTube channel, the pair had never so much as clapped eyes on one another until a couple of years ago, after initially debating on a WhatsApp group/forum. Ricky recalls: “Having gained my apprenticeship and been in meaningful employment with an electrical firm for a number of years, I decided to

take the plunge and become a self-employed electrician. That’s when the problems started. “When you work for a company you live in a bit of a bubble, but going self-employed makes you realise some of the pit-falls that are out there, especially when it comes to job security, and this is where myself and Sam first came across one another.” “Having been in the game for over 15 years, working for agencies and self-employed for a while, you start to see how unfair this industry can be at times for those individuals not employed directly by a company”, Sam explains. “To try and protect their rights, Ricky and I started an electrical industry union – the Electrical Workers Branch (EWB) – through which we’ve been able to engage with agencies etc. to ensure that workers/members get paid (in the event of a dispute), amongst other things.” Although the EWB’s part in this particular story has to be acknowledged, it is the next step in its evolution that has really brought the duo closer together. Utilising the increasing reach that internet podcasts and videos now offer across the electrical industry, Sam and Ricky launched the Electricians’ Guide to Everything podcast.

“Although we’ve been doing the industry a service through the EWB, we felt that the best way to solve a lot of the issues that occur in the industry is through education, and the EWB wasn’t really working as that type of platform,” says Ricky. Sam adds: “The podcast gives us the chance to do more with our expertise. We’re strong believers that education is the key to unlocking a better electrical industry, and we want to highlight the problems it is facing. We also want the podcast to be a brilliant source of CPD.” Influential characters Indeed, with 16 episodes now in the bag, featuring some of the most influential and interesting characters that are working for change in the electrical trade, the pair have covered a number of topics that affect electricians on a daily basis. “Once you have a few shows in the bag, it’s not that difficult to get guests to commit to coming on, and we’ve been really pleased at the quality of names we’ve been able to attract so far,” says Sam. Ricky adds: “It’s been great talking to a variety of industry professionals and being

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DIGITAL DIGEST

able to glean from their first-hand experiences of the electrical industry. It also gives us (and them) the chance to dispel a few myths; there are so many different opinions that swim around this industry, so the podcast gives us a point of reference to say “Ok, you don’t believe us? Have a listen for yourself then!” The initial goals of the podcast now appear to be bearing fruit, as Sam and Ricky’s notoriety and footprint in the industry has taken a sharp upward turn over the past few months. The lads also enjoy writing blogs about the sector, with Sam offering an analytical view and Ricky taking a more ‘direct’ approach to their chosen subjects. So what does the future have in store for EGTE and its founders? “We’ve recently launched a YouTube channel and feel that this will help to extend the reach

of our podcasts and content to a much wider audience. It also allows us to move into different areas of content – such as product demonstrations and reviews,” says Sam. Ricky concludes: “Although this is a very exciting step for us, we’ll never lose sight of what our initial aims for the podcast were: to offer free CPD and education to the industry. After all, it’s so important to give something back!”

All links to the EGTE podcast, social media and YouTube channel can be located at: www.rdr.link/ej073, or you find them on any platform using @EGTEpodcast

Ricky (left), alongside Sam (right)

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