Professional Electrician & Installer September 19 by Hamerville Media Group

TO EE FR DE RA ET TH

PROFESSIONAL

ELECTRICIAN THE BUSINESS MAGAZINE FOR THE ELECTRICAL TRADE

& INSTALLER

SEPTEMBER 2019

LIGHTING ENLITE REBRANDS TO AURORA: NEW PRODUCTS REVEALED

TECHNICAL & TRAINING WE REVIEW THE IET ACADEMY’S 18TH EDITION ONLINE TRAINING

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

September 2019 Volume 35 No.8

Regulars 5 9 17 26 29 30 45 46 56 75

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

News & Views 14 How the industry has worked together to help equip one FE college for the future

How remembering four key letters can help to improve your IR inspection technique

19 Our guest columnist gets some key industry issues off his chest this month

Technical & Training

Products & Business Solutions

Digital Digest

61 How to fit Blauberg’s Calm fan

105 We look at the latest website and App releases

solution in six simple steps

33 End-to-end (loop) resistance of ring final circuit protective conductors

37 Changes to domestic fire alarm standards

109 The top videos making it to the

62 M&E installations – is there a

smaller screen this month

quicker way?

110 Showcasing the installations that 65 Snickers Workwear answers

40 Where automatic disconnection is not feasible

42 Overvoltage protection and commercial installations

make our readers proud

questions about its latest safety range

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

68 IR inspection – why four letters can help your technique

Competitions & Giveaways

49 A trio of product testers review the IET Academy 18th Edition online training

70 Do you have the right LED bulkhead for the job?

25 WIN C.K Cable & Wire Stripping tools to be won

45 WIN Your chance to bag a superb

53 Sealing of wiring system

79 Reece Fitzhardy gets to grips with

penetrations

the RF Solutions Mainslink-PRO switch

Snickers Workwear bundle

59 WIN Loads of great goodies are up for grabs

“The online course was perfect for me!”

83 Ronny Wendlandt puts the Marshall-Tufflex Fast Coupling basket to the test

87 The TIS MFT Pro – rated and reviewed

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

‘Safety first’ for housebuilding partnership

PROFESSIONAL ELECTRICIAN September 2019 3

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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 ADEEL QADRI 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

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 19 Magic Concept © Fidelio Pg 21 Contractor © Auremar Pg 22 Electrician © Auremar Pg 42 Commercial Building © Jason Pg 113 More Info © Momius

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

‘Shock’ tactics are fair game hough the action of ‘taking the law into one’s own hands’ is widely discouraged throughout society, especially where said behaviour crosses the legal boundaries that govern us, you’d be hard pushed to find someone who hasn’t at least considered their own personal form of retribution in a situation where they feel they’ve been wronged. Very few actually have the bravery, conviction, or indeed anger, to go through with such plans, but one frustrated tradesman has done exactly this in an effort to deter the tool thieves that have made his life, and those of many other innocent working professionals, a misery in recent times. Having been the victim of over £5,000 worth of tool theft from his van over a two-year period, Ray Taylor, 61, an electrician (of course) from Wolverhampton, decided he’d put his skills to good use by wiring his van so that any potential chancers will receive a 1,000V shock for their troubles. What's more, they’ll also set off an earbusting siren and two fire alarm-like sound bombs at the same time. Ray’s contraption consists of a 1,000V zapper from a fly swatter, which is fitted to a metal plate in the rear door handle of his van, meaning the shock is only isolated to the handle. The siren, sound bombs, zapper and a strobe light are on the same circuit which is fitted to a switch in the cabin. This switch is connected to the rear door key so that, when the van is locked and someone tries to pull at the handle, it will then activate. A selection of sensors fitted to all the van’s doors will also trigger the circuit. And the best part of it all? The police have confirmed that Ray is doing nothing illegal by having the device fitted, as long as he continues to display a yellow warning sign under the

handle that states: “Danger Live Terminals”. Firstly, I’m sure you’d all like to join me in saying a big “well done” to Ray for both the ingenuity of his invention and having the savvy to ensure he’s not breaking the law by utilising it. The real question here is why someone like Ray has been forced to take such measures to protect his livelihood from the scumbags that continue to profit from the sale of stolen tools. The answer, of course, is that the authorities still haven’t enforced strong enough deterrents to stop thieves from having their cake and eating it. In life, there are occasions where there is no choice but to take action yourself, and that is exactly what Ray has done on this occasion. Good on him! On the subject of deterrents, this month’s guest columnist (starts page 19) has some suggestions for a few measures that can be introduced into our own industry to stop electricians from cutting corners in their work. We'd be interested to hear if you have similar views and experiences, so feel free to drop us a line at pe@hamerville.co.uk once you've had a good read. Don’t forget, we’re headed to the ELEX Coventry show at the Ricoh Arena later this month, so if you're coming along for either day make sure you pop by the PE stand to chew the fat with the team. Enjoy the issue and have a good month,

Richard B owler PROFESSIONAL ELECTRICIAN September 2019 5

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Research shows clear RoI from apprentices

According to figures from The Electrotechnical Skills Partnership (TESP), companies that recruit apprentices can see a return on investment (RoI) as soon as year two of the apprenticeship programme. Using scenarios based on low, medium and high charge-out rates for unskilled and skilled work, the overall net costs and benefits of apprentice recruitment have been projected. At the lowest rates, an apprentice delivers a net benefit of around £11,400 over the four years and starts to make a return in year three of the apprenticeship. At higher charge-out rates, the apprentice begins to pay for themselves in year two and, by the end of year four, has created a net total benefit of just over £34,000 at medium charge-out rates and £56,700 at high rates. The calculations take into account the weekly costs of an apprentice and supervision, the percentage of time spent on supervision, and the increasing amount of time the apprentice spends completing work of a qualified electrician. With 95% of training costs in England now funded by the Government for apprentices of all ages, these figures provide a strong case for employers to consider apprentices as a means of bringing new skills into the business. In particular, smaller companies often struggle with the resource for managing the apprenticeship and initial impact of productivity. TESP believes these projected returns demonstrate that, with the support of a quality training provider, an apprenticeship will eventually pay off. Ruth Devine, Managing Director of SJD Electrical and Chair of TESP, said: “Although it is a commitment which can be daunting to small businesses in particular, investing the time and resource into apprenticeships will ultimately drive business growth.” To read the report, visit: www.rdr.link/eh101

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

South-West spark answers DIY SOS

Matt Francis, of NICEIC-registered M Tech in Bridgwater, has helped to create a two-storey extension for a family of five in Weston-super-Mare on an episode of DIY SOS. He led all the electrical design and installation work on the project after volunteering his company’s services at a registration event earlier in the year. Matt said: “It was tough as it involved nine straight days, but it was such an amazing project to be a part of. There was a bit of pressure to get it done in time, but everyone got involved and there was such a good buzz on-site. “Normally on a project like that, the trades would all come in at different times and you might not see each other. So, it was interesting to see the entire process from start to finish, and everyone working in conjunction. It was great to give something back and a really rewarding thing to be part of.” The Weston-super-Mare DIY SOS Build is due to air on BBC1 later this year.

Food for thought from Schneider Electric

Schneider Electric has given away more than 100 £3 e-vouchers to electricians to spend at Greggs on a meal of their choice. For every £1,000 (plus VAT) of promotional product ordered by a distributor, 30 Greggs e-vouchers will be given away for that distributor to give to their customers. Customers spending £50 or more in one single transaction at their local electrical wholesaler will then be able to join and claim their e-voucher, alongside a range of support and training materials designed to help them make the most of renovation opportunities in homes, schools and factories. The FOOD for THOUGHT promotion is aimed at electricians and small contractors, and it is designed to help highlight further opportunities for them to e-learn and up-sell to their customers. Electricians have until September 30th to claim their e-vouchers using the promotional scratch cards. For more details about the promotion, visit: www.rdr.link/eh102 PROFESSIONAL ELECTRICIAN September 2019 9

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EIC launches fifth Challenge for a Cause The Electrical Industries Charity (EIC) has launched its fifth Challenge for a Cause – Inca Trail 2020. The ten-day Inca Trail challenge will give you a chance to discover the beauty of Peru as you trek through a stunning combination of ruins of a mystical ancient city, mountain capes, and tropical cloud forests. As part of the adventure, you can tackle the demanding Dead Woman’s Pass, which stands at 4,200m, and reach the Sun Gate that overlooks Macchu Picchu. Tessa Ogle, Managing Director of the EIC, will also be taking part in the challenge. You will be able to help the EIC be the first port of call to hundreds of industry colleagues and their families by allowing the Charity to offer financial, practical and emotional support. The challenge is taking place between September 5th and

September 15th 2020. Permits to the Inca Trail are restricted and must be secured by November 2019, so delegates should register their interest as soon as possible to avoid disappointment. Only five places remain for this challenge, and the fundraising target is £5,000, plus a registration fee of £499. For more information, visit: www.rdr.link/eh103

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

Further fall recorded in reportable accidents The latest accident statistics for electrical contracting businesses show a further reduction in the accident rate in 2018. The figures, collected by the Joint Industry Board on behalf of the ECA and Unite the Union, show that the rate of RIDDOR-reportable accidents fell to 164/100,000. Significantly, no fatalities were reported during 2018 and the rate of specified (major) accidents was also lower than in 2017 at just over 52/100,000. The main causes of injury were falls, slips and trips, and there was one reportable injury due to electric shock. Steve Brawley, Chief Executive of the JIB, commented: “It’s very encouraging that the rate of reportable accidents in our industry continues to fall, and it means that the rate of these accidents is now, remarkably, only slightly more than 10% of what it was in 2001.” Paul Reeve, Director of CSR at ECA, added: “The number of RIDDOR-reportables – in a sample of over 13,500 operatives – is now so low that in 2019 we will be asking companies for additional details of any ‘over one day accidents’. While these accidents are not RIDDOR-reportable, this will give us more data to work with in future.” Rob Miguel, Unite’s National Health and Safety Advisor,

concluded: “JIB is working to improve occupational health, funded through the JIB Benefits Scheme. It will deliver various benefits including improved compliance with health and safety law, meeting client and main contractor requirements and helping people to identify and remedy health issues at an earlier stage.” To download the accident report, visit: www.rdr.link/eh104

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

Dickies Workwear lends hand to Band of Builders Dickies has offered its support to Band of Builders’ latest fundraising challenge by providing clothing to those completing the National Three Peaks Challenge. A national charity run by and for tradespeople, Band of Builders is a community that helps members of the construction industry at times of need through hands-on projects, advice and support. A team of 17 walkers, supported by eight drivers, took part in the National Three Peaks Challenge, climbing Ben Nevis, Scafell Pike and Snowdon – the three tallest mountains in Scotland, England and Wales – within 24 hours over the summer. Dickies provided hoodies and t-shirts for those taking part, which were branded with the Band of Builders logo. James Whitaker, Marketing Director for Dickies Workwear, said: “Word is quickly

spreading about the fantastic work Band of Builders does to support tradespeople when times get tough. We’re pleased to support such a worthwhile cause and this was a great opportunity to do so.” Martin O’Donnell, Fundraising Coordinator at Band of Builders, added: “Everyone taking part in this tough challenge should be proud of what they’ve achieved. The total walking distance for the National Three Peaks is 23 miles, with a total ascent of 3,064 metres! “We surpassed our initial goal of raising £10,000 and this figure has now reached £13,180 in total. “We’re grateful to Dickies for providing the branded t-shirts and hoodies. Seeing our logo on our tops was a good reminder for everyone climbing those mountains that our efforts were for such an important cause.”

For more information on how to get involved in Band of Builders, including volunteering to offer support on projects, visit: www.rdr.link/eh105

Vent-Axia wins Red Dot Award for PureAir Sense Vent-Axia has won the Red Dot Award: Product Design 2019 for its PureAir Sense, the UK’s only bathroom fan with Odour Sense Technology. Designed to improve indoor air quality, the Vent-Axia PureAir Sense is equipped with an odour sensor that increases airflow when the air in a home is poor. If the sensor detects a strong odour, the fan speed increases and quickly extracts the odour to help ensure the air remains fresh.

Stephen Totman, Product Manager at Vent-Axia, said: “We are delighted to win a prestigious Red Dot Award which recognises the outstanding design quality of the PureAir Sense and is an independent validation of the true uniqueness of this fan. “Vent-Axia has been leading the way in innovative fan design for over 80 years and we are committed to producing ground-breaking design for years to come.”

New premises for BLE Lighting & Power BLE Lighting & Power has relocated into a 10,000 square foot premises situated on Drake Business Park. It will provide capacity for manufacturing, customer support, sales, marketing, technical services, warehousing and management functions in one location. Located six miles south-east of Sheffield city centre, the premises benefits from excellent communication links, as it’s situated near Junction 31 of the M1 motorway.

The new premises and enhanced operation efficiencies will assist BLE to continue to grow and develop to meet its customers’ needs whilst maintaining high levels of quality and customer service. BLE Lighting & Power has manufactured emergency lighting and power systems for over 50 years. All products are

12 September 2019 PROFESSIONAL ELECTRICIAN

manufactured and tested to the highest standards, ensuring compliance with the latest legislation.

NEWS SPECIAL

Paul Meenan (left) and Ryan Dempsey (right) – two of the e5 Group’s founder members

When the e5 Group visited Warrington & Vale Royal College, they found an underequipped staff doing the best with what they had at their disposal. So, they sent a plea out to the industry for help. We find out more from Paul Meenan, the founder of e5.

E5 AND SCHNEIDER OFFER HELPING HAND aul Meenan describes the situation at Warrington & Vale Royal College succinctly: “They were using old plastic fuse boards; one of the boards didn’t even have an RCD in it, it was that old. Dave Love (Curriculum & Apprenticeship Manager for Electrical Installation) knows he has to work with what he’s got, he just doesn’t have the budget.” So, in mid-May, he sat down with Paul to film a ‘Workshop Waffle’, attempting to raise awareness of the lack of equipment that the college had available for its students. In the video, Paul asks: “Manufacturers: why are you not coming to Warrington? Why are you not going around to more further education colleges that really do need your support? These guys (the students) are your next customers.” Ultimately, it was a shot in the dark, with no guarantees of success. But this is not something Paul anticipated when he started his journey with the e5 Group, as he explains: “I had an expectation, or an assumption at least, that education was in a good place. I’ve been going to colleges on and off for the last two to three years to talk to students, answer any questions they have and tell them about how I got started in the industry.” It is this experience of visiting colleges that has helped to shape the visions and values of e5.

Paul reveals: “The core founders of e5 met a year ago to decide what our visions and values would be: we wanted to influence, inspire and inform people. We have these displayed on one of our logos, and at the bottom of the badge are our last two values: support and educate. “We realised quite a while ago that ‘support’ and ‘educate’ were the two most important things we wanted to do.” Reaching out to manufacturers

But why should manufacturers feel obligated to do something like this? Paul says: “We’re not asking for donations, we’re asking for what their strategic board would identify as corporate social responsibility (CSR). It’s the right thing to do at these colleges. For me, I’d be more likely to choose a company or brand that does that, because they’re giving something back to the future of the industry.” And along the way, e5 will be there to make sure the right colleges are getting the right attention, as Paul concludes: “What we’re trying to do with e5 is go around colleges that have a passion, identify their needs so we can influence their youngsters, and use our influence to help support their future education.”

It is these last two visions and values that drive Paul and the rest of e5 to keep visiting colleges, and continue reaching out to manufacturers. In the case of Warrington College, Paul contacted Schneider Electric. The answer was far from definitive – the company said it would see what it could do – so Paul, although hopeful, certainly wasn’t expecting the end result. He explains: “The next thing you know I get a phone call saying a lorry with six pallets’ worth of gear has turned up, with nearly £100,000 worth of kit on it.” Warrington College received Easy9 single and three phase Acti9 Isobar consumer units and, as Dave Love puts it: “Enough RCDs, MCBs and Schneider’s donation arrives, including ‘enough RCDs, MCBs and RCBOs to swin in’ RCBOs to swim in!”

14 September 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.

Clearing up continuity requirements Dear PE I am writing to you to discuss myself and my colleagues’ frustration at the confusing and conflicting information regarding the necessary tests required for EICRs, which you published in a previous edition and was credited to Stroma. In the article, Stroma stated that the only test required to prove continuity on a radial circuit is the Zs, and that the R2 test was not required – thus only the Zs reading needs be recorded on the cert for continuity. I have discussed this with another organisation several times and they’re adamant that the R2 should be recorded additionally as a minimum on both radial and ring circuits (along with ring continuity for rings, of course). Now, I don't mind which is correct, but please could you publish some clarification so that other electricians are not confused moving forwards. Yours frustrated, Rob Shierson Following Rob’s letter, the technical team at the NICEIC has been in touch to clear up the issue:

An EICR should consist of a detailed inspection with the appropriate tests to determine whether the installation is in a satisfactory condition to be used in a safe way. This will be achieved in compliance with chapter 62 of BS 7671. As this is not initial verification and the purpose of testing is to prove the safety of the installation, regulation 621.2 calls for the appropriate tests from chapter 61. The decision on which tests are appropriate would be the decision of the inspector and would be agreed with the client as limitations before the test was carried out. Guidance note 3 gives additional information and guidance for the inspector on the necessary tests where practical in section 3.10 and table 3.4. This calls for the continuity of protective conductors to all accessible current using equipment and accessories to be confirmed. Note 4 of this table states that an earth loop impedance test may be used to confirm continuity of protective conductors.

Where a loop test is used to confirm continuity of protective conductors, the inspector should always take into consideration parallel conductive paths that may influence the results. As we are not familiar with the installation where there was no continuity testing of protective conductors completed we cannot make specific comments as to whether this was adequate to meet the requirements of BS 7671 allowing for any limitations applied. One example of where earth loop testing may be considered is where the installation cannot be switched off. In this case, a mixture of ‘wander lead’ continuity testing and earth loop testing could be considered.

GUEST COMMENT

“IF I HAD A MAGIC WAND…” This month’s guest columnist puts forward some suggestions for improvement within our industry, based on his own real-life experiences.

’d like start this month’s column by introducing myself. My name is Lee Ward and I’m an electrician who has been working in the electrical industry for a good number of years as both an electrical contractor and a Qualified Supervisor (QS). For the last 12 years (and counting) I've been self-employed, running my own electrical business. In my early years I was able to do much of my training (and learning) in both commercial and industrial environments. The company I first started out with worked primarily in hospitals across the UK, which involved a variety of interesting and technical electrical installation works. I believe that this was a very good first step and grounding into the electrical industry. Having undertaken a variety of what I'd call ‘grounding qualifications’ at the time (and I’m still learning to this day), I eventually moved on to work for a few different contractors, gaining experience and skills in various sectors and environments, before deciding to go out on my own over a decade ago. Indeed, I can remember my first day of trading with five days’ work ahead of me, very little money in the bank and a beat-up Transit van to get me from A to B. This was a real challenge as (like with most people in this situation) I had a mortgage, wife and children to support,

and I found out very quickly that the step from employment to self-employment takes a certain degree of self motivation and love for your job/industry. Kudos to all those who have taken the same leap of faith into the self-employed world. Over the last 12 years I’ve built my business and client base up to a level that I'm comfortable with whist also gaining extensive experience as an electrical consultant to three local authority building control departments, all based around the Dorset area where I reside. Much of this work has involved independent assessments of electrical works that have taken place in domestic dwellings which are subject to Approved Document P. Over time, I've been exposed to jobs that have been undertaken by those that are registered (with a CPS), those that aren’t registered, and those that are in the process of trying to become registered. The full spectrum, you could say, and a first-hand view of the standards of design, installation and certification coming through into the industry. I should also add that I've spent many years working on my own personal Continued Professional Development (CPD), and this is something that I passionately believe is important for electricians as we're always learning about regulations, best practice and new technology as the industry changes and

evolves. As part of my CPD I'm proud to have been certified by The IET, the Engineering Council and also the The Institute of Clerk of Works and Construction Inspectorate. This is all voluntary, of course, but something that I'd highly recommend to all sparks. Whilst I can only speak for myself, I feel that discussing the current challenges our industry is facing deserves more focus, leadership and direction, especially from those who we employ as paying members and customers. In my opinion, there are a number of elements that need improvement (immediately and in the longer term) for the benefit of everyone, including hard working electricians and the consumers who put their trust in us. I’d like to share a few of my thoughts on these, based on my own real-life experience. Part P continues to raise many Q’s One of the reasons for talking about my previous experience, and the route I took when I first started, is that I feel it has been far too easy for anyone to enter the industry and begin working in the domestic sector after short-form training and ‘qualifications’, especially as self-employed electricians. The introduction of Part P (of the Building Regulations) has had a lot to do with this, and caused many of the grey areas that now exist within the electrical

PROFESSIONAL ELECTRICIAN September 2019 19

GUEST COMMENT

playing field. I am all for people wanting to re-train, learn a new profession and enter into a new industry, but there also needs to be a sensible and realistic minimum standard of technical underpinning knowledge and proven practical training/experience before one can be awarded (what should be) the respected title of ‘Electrician’. My gut feeling when Part P was first introduced was that, whilst I could understand the reasons for introducing some form of system (improved standards and safety for domestic consumers), there was always the issue of questionable criteria of technical qualifications and training defined to prove that those certifying work to Part P were indeed ‘properly’ qualified or ‘competent’, which in their own rights are two words that have been open to interpretation. The issue, in my mind at least, is that there wasn’t enough time to get all of those working in the domestic arena trained up correctly, so this is where the ‘fast track’ courses which we see today originated

from – allowing delegates to gain a fast-track route into the industry by undertaking courses that can range from five days upwards. It’s not just our industry by the way, but if I had prior knowledge that a Gas Engineer coming into my house had a five or 18 day qualification, would I let them? Absolutely not, but then I’m in a privileged position to do some due diligence in this area, knowing what I do about training across all trades. Think about ‘Mrs Smith’ though, how does she know any difference apart from the logo she sees on the side of the van? She's putting her complete trust in the fact that we are all qualified to the same level which, some could say, creates a false sense of security. I’m not going to question the level of training offered by the various course providers (as there are some very good ones out there), but what I will say is that I’ve heard stories of some private training establishments that have ‘helped’ the delegate to ‘get through’ the course before, and to me this suggests that, as

long as you’ve paid your money, you’re going to get ‘qualified’ - something that is incredibly unhealthy for both the delegate and the industry in general. I’d rather train to learn than just train to pass. It’s on the ‘shop floor’ that I feel we have one of the biggest challenges currently, as I do not believe the CPS providers and private training companies have anywhere near enough exposure to the jobs that are taking place in the real world on a daily basis, by ‘qualified’ individuals. In one of my day jobs I’m often the first person to witness a job after building control has been notified, so I get to see the varying standards of work on offer from all manner of individuals, including those who may recently have qualified through a short-form course. Poor workmanship is certainly not exclusive to this demographic, but in my experience it is much more commonplace in those that have very little real-life working experience via proper courses. I understand the counter argument that

proper time-served sparks can also produce awful work, which is absolutely correct, and I'm certainly not excusing that. What I do know, from my own experience, is that the majority of poor workmanship that I've personally witnessed comes from the domestic route upwards. I should add that I am also a domestic spark, and very proud of it! NAPIT produced an interesting industry infographic a couple of years ago, which showed an exceptionally low number of prosecutions had taken place under Part P over a two year period (2011-2013) and a significant percentage (72%) of local authorities took no action against Part P non-compliance over the same time-frame. Yet when you consider that there could be over 500,000 notifications made over a calendar year, the lack of action is worrying. Furthermore, there should be a fairly substantial pot available (if we assume that each notification costs around £3.50) through which greater investment in front line ‘policing’ could be made.

GUEST COMMENT

Lest we forget that you don’t even have to be a member of a CPS to notify your work under Part P, so this potentially creates even more non-compliant workmanship that can slip through the cracks. Part P has also bought with it an awful lot of misconceptions, and this does nothing to help the outward perception of the industry. Essentially, the homeowner has the responsibility of doing their due diligence, but how do they know of an individual’s qualifications and competence, outside of the badge they’re advertising on their van? I would argue that, as the appointed gatekeepers of the industry, CPS providers have a wider responsibility to use our membership fees to better educate the public and consumers on our behalf. After all, how many domestic homeowners actually know about Part P? 14 years down the line, it's hard to believe we're not further forwards. Based on my own frontline experience, I also have reservations about third party certification systems, mainly because I feel they go against the fundamentals of taking responsibility for one's own work. The process can potentially be open to abuse because, for it to work effectively, the QS needs to be on-site with you before, during and after – but how can they prove that’s been the case? I've always felt that there appears to be too much inward fighting for a piece of the pie from many of those responsible for training, ‘competence’ and standards within the industry. When you add to this the confusion that Part P has created and the low entry levels of standards of technical competence, is it any wonder that rates and standards are going down? From there it becomes a race to the bottom, as standards of work drop – along with wages – and the industry suffers right across the board. How could we improve things? If I could wave a magic wand right now then I think we need some form of a license to practice system, whereby the entry level is adequate in terms of proper long term on-site training and qualifications. Electricians would then be given a photo ID card so that ‘Mrs Smith’ can trust that the individual is up-to-date

and has the correct qualifications and technical competence required to complete the work she needs doing. I do think we could take a look at the gas industry in terms of improving accountability in our current system. I know their system is not perfect, but at least it is governed by one central regulator/body which creates far less confusion. The current complaints procedure in our industry, for me, is too convoluted and reliant on the consumer to do most of the work (as it requires them to lodge a complaint before action can be taken and allow someone back who may not then be trusted). We should also be taking action by policing strongly from within our own industry. We have enough modern technology available to us all (such as cameras and smartphones) to allow electricians on-site to gather evidence if we believe that an installation is dangerous. We should then be able to send this through to an approved body that would look into it and, if an individual was found to have worked in a dangerous way, they should be held accountable. There has to be some sort of deterrent that ensures electricians don't cut corners in their work, so one idea could be a points system logged against an individual's record (like a driving license system), and if you acquire too many points/black marks against your name, you're given a final warning and

22 September 2019 PROFESSIONAL ELECTRICIAN

told you need to re-educate or risk being delicensed, much like a driving awareness course. If an individual is de-listed for whatever reason, this should also result in a blanket ban across all other bodies/providers for a defined duration. The industry also needs a much more transparent approach, as there is too much confusion currently. As a result, the frustration levels of many electricians on the tools are growing as all they really long for is to do a good job, and be part of responsible systems that improve consumer confidence and focus on technical standards of electricians. This will, in turn, raise the entry level that new entrants to the sector can come in at and ensure those operating within have to commit to staying up-to-date through CPD and training. When I talk to my customers about our industry, I'll tell them that different electricians work to different standards, which I believe is fundamentally wrong for me to say, but it is true. In my opinion, we should ALL be working above the minimum standard – the regulations are not the maximum standard, they’re the minimum standard. If we can raise the levels of knowledge, experience and accountability within our industry, then we'll have gone some way to rectifying that situation. Can those governing the sector rise to the challenge?

PRIZE DRAW

W IN

WIN C.K CABLE AND WIRE STRIPPING TOOLS Five readers will bag a fantastic C.K Automatic Cable & Wire Stripper. tripping cables has never been easier, with the new C.K Cable and Wire Stripping Tools combining fantastic features and benefits that offer simple, fast, effortless and precise solutions. Not using the right tool can be time consuming and damage cables. Using trimming knives to strip cables can also be dangerous, causing injuries if you slip, with cuts potentially becoming serious by using an exposed blade. Using the new C.K Cable and Wire Stripping Tools provides the perfect solution for any cable and wire stripping task. Manufactured in Germany to the highest standards for safety and long life performance, these top quality cable and wire stripping tools provide a great range of options to suit your needs. Let’s take a closer look at what’s on offer:

C.K Automatic Wire Stripper (T1261) Designed for stripping solid and stranded wires from 0.2 – 6.0mm² (24-10 AWG) these

clever wire strippers provide automatic wire size adjustment for convenience. C.K Automatic Cable & Wire Stripper (T1260) Designed for stripping flat cables up to 12mm in width, this superb cable and wire stripper quickly removes both the external sheathing and internal conductor insulation. An automatic size adjustment makes for added convenience, plus an integrated wire bending hole for termination preparation. C.K Universal Cable Stripper (T1270) Provides razor sharp, pre-set stripping blades for fast, precise and damage free stripping of all common round cables with 8-15mmØ. C.K Coax Cable Stripper (T1271) Featuring razor sharp pre-set stripping blades, for fast, precise and damage free stripping of all common coaxial cables. Suitable for stripping cables of 4.8-7.5mmØ, as well as stripping 3-core flex.

C.K Cable Stripper (T1280) The blade repositions for cutting both around and along cable sheathing, while the adjustable cutting depth prevents damage to inner conductors. It features a Titanium-Nitrade (TIN) coated blade to prolong blade sharpness and a handy spare cutting blade is stored within the handle. For more information on the new C.K Cable and Wire Stripping Tools, go to: www.rdr.link/eh107

HOW TO ENTER To enter your name into the draw to win a C.K Automatic Cable & Wire Stripper tool, simply fill out the contact form at: www.rdr.link/eh108. Five winners will then be chosen at random from all of the entries. Deadline for entries is 10/10/2019. Usual T&Cs apply.

PROFESSIONAL ELECTRICIAN September 2019 25

ELEX2019 PROFESSIONAL ELECTRICIAN

Sponsored by

The Electricians’ Exhibition

BAG A BARGAIN AT ‘THE’ ELECTRICIAN’S EXHIBITION With special deals and competitions galore on offer at ELEX Coventry later this month (September 19/20), we look at some of the most eye-catching offers for show visitors.

SAVE £££ ON A NEW TESTER Di-LOG will be displaying its range of award-winning 18th Edition MFTs at ELEX Coventry, and electricians can take advantage of the following special show prices and offers: 1. DL9118 18th Edition MFT = £429 + VAT (Normal offer price £469 + VAT) 2. DL9110 18th Edition MFT = £359 + VAT (Normal offer price £389 + VAT) 3. DL6799 CombiVolt 5 Voltage, Continuity and Current Tester = £76 + VAT (Normal offer price £129 + VAT)

WIN A FLOODLIGHT AND DETECTOR COMBO Visitors to the Timeguard stand are in for a treat this month, with the company offering the chance to win a floodlight and detector combo. Timeguard always puts its money where its mouth is when it comes to ‘ease of installation’, designing in some great features for professional installers. What could be easier than the LED Pro lights with lovely big wiring blocks and a choice of easy plug-in PIR or photocells detectors? You can take a look at some of the products on offer, and enter this superb prize draw by paying a visit to the Timeguard stand during the show.

LIGHT UP YOUR WORKING DAY AND GET A GREAT DEAL A regular at our ELEX shows, Unilite helps trade professionals to see the light with its range of high quality site and head torches. If you’re in the market for a new light source then you could grab a fantastic show-only deal on the following: 1. SLR-2750 Sitelight = £50 (RRP £89.99) 2. PS-HDL2 Headlight = £15 (RRP £30.90) 3. PS-P1 Penlight = buy two for £15

‘EXCLUSIVE’ OFFERS FOR C.K CUSTOMERS C.K’s stand at the Coventry show promises to be better than ever, showcasing brand new products, such as the C.K Magma Pro Toolcase Plus, designed for all terrain use; the new C.K Wire Strippers, fast, effortless and precise; and the C.K Gloworm Cable Router, perfect for complex cable routing, with its clever glow in the dark phosphorescent polymer construction. 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, or the fantastic 5pc Dextro Screwdriver Set, an electrician’s must-have.

FOR MORE SHOW DETAILS AND TO REGISTER FOR YOUR FREE TICKET, VISIT: WWW.ELEXSHOW.INFO 26 September 2019 PROFESSIONAL ELECTRICIAN

OF HISTORY Emma Segelov, MK Electric’s EMEA Marketing Operations Manager, discusses how MK Electric has made history over the past 100 years. The summer of 1919 is culturally significant for many reasons: the Treaty of Versailles, the first non-stop transatlantic flight, and the beginning of prohibition in the USA. In a small factory in North London, Charles Arnold also made his own small piece of history with the invention of the Multy Kontact socket. At that time, most available sockets were split pin-style sockets that were primarily made from thick gauge slotted brass tubes, offering practically no flexibility. The Multy Kontact was safer and easier to use than anything else on the market at the time. So much so, that the British Engineering Standards Association (BESA) revised its standards in line with the levels of self-adjustment and contact-making that it established. It is not the company’s only pioneering invention. In 1928, Charles invented the first shuttered socket, ‘anti-flash’, which featured automatic isolating caps that concealed and isolated the socket tubes the instant a plug was removed, eliminating the arcing sensation associated with plug withdrawal. This set a new standard for electrical safety and formed the basis of the British Standard electrical system as we know it today.

mkelectric.co.uk

The launch of Logic Plus in 1996 saw MK Electric set the standard yet again with its unique and patented 3-pin, child-resistant shutter system. Serving the country The arrival of World War II placed great strain on the country’s resources, including the 131,549 aircraft that were manufactured over its seven-year duration. As such, MK Electric ceased production on 90% of its domestic and industrial products and switched to those that would help with the war effort, such as detonators, overload protection devices and centrifuge bolts for aircraft. When peace returned and

businesses resumed their usual operations, MK Electric proceeded to purchase and renovate new factories in 1953 (Park Road, London) and 1961 (Southend-on-Sea). Guiding the future Flash forward to 2019 and MK Electric remains committed to quality. It is unwavering in its determination to find better and safer ways to meet the needs of its customers, now and in the future. An example of this is the integration of USB charging modules with Dynamic Device Recognition (DDR) technology into its portfolio, to support the widespread adoption of mobile devices. This means contractors can cater to the changing needs of the modern world.

For more information, visit: www.mkelectric.co.uk

THE

CODEBREAKERS ALL CITY SPARKS: A client moved into a new house and asked me to make a quick visual inspection of the property to check that there was nothing immediately dangerous. I found this contactor for an underfloor heating circuit – incorrectly wired and dangerous. However, all connections appear to be safely housed and isolated in this plastic tub! 2. Contactors and similar switch gear are designed to be mounted on a rail – in this case a DIN rail is required. This mounting allows for safe mounting without damaging the equipment and allows adequate cooling during use. Bolting the contactor directly to a piece of wood could leave the device damaged through stresses it wasn’t designed for, and any cooling requirements have been compromised by what is obviously not a fire-resisting backing board. 3. Cable management and containment is not acceptable, the earthing terminal is neither adequately mounted and supported, or correctly terminated. The cables making up the connections are poorly terminated and not identified in any way. The Neutral cable entering the top of the device seems to show signs of overheating and has discoloured the backing board – a clear indicator of thermal damage. 4. Access for maintenance and ongoing inspections is also an issue here, as the storage box is permanently fitted. At first glance, I’m sure that some clients would see this as serving a purpose: not very pretty, but equally not as expensive as the actual enclosure would be. Unfortunately, this is the thought process and lack of understanding we face almost daily. In this case let’s break down the individual parts and take them on their merits, or lack thereof. 1. The plastic box, which is obviously a low-cost storage box, can be found at most DIY or low-cost shops. These are designed to take a storage load and not be bolted to a wall. Many are generally susceptible to the environment and some will become brittle over time, while others are brittle by design, due to their economical manufacture. Given its potential for structural demise and lack of design for this type of use, it shouldn’t be used for this purpose; all electrical enclosures must meet a specific British Standard. As we don’t expect to find voltage inside storage boxes, it’s a requirement for labelling with the voltage present, although this pales into insignificance with the rest of the install.

There may also be isolation and protection issues, but without further knowledge of the installation and the proximity of other equipment, I’ll leave that out of the observations. The Observations, Regulation infringements and Codes applicable to this observation would be. No provision for accessibility or the inspection and maintenance of joints Plastic storage box

513.1

Possible strain on cable terminations

522.8.5

Storage box enclosure not acceptable for use as an enclosure

526.5

Storage box enclosure unlikely to meet environmental constraints

526.7

Contactor not mounted in accordance with manufacturers requirements

134.1.1, 134.1.5

Strip connector not adequately supported; risk of strain on terminations

134.1.4

Neutral supply cable showing signs of causing thermal damage to back board

651.2(ii)

Lack of adequate identification of conductors

514.1.2

Lack of an adequate voltage warning label

514.10

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 September 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

RAMON JIMENEZ: I found this nice, low-profile cable joint on a ring circuit feeding a socket. The wires were just twisted together!

This kind of alteration to an existing circuit is so dangerous. If the lid to the mini-trunking is knocked off or pulled off by a curious child, there is little or nothing preventing contact with live parts. In most cases, the insulating tape peels off or becomes brittle and breaks away. More of a concern is that the joints are not made with any kind of mechanical crimp or solder connection. Where any kind of maintenance-free (MF) terminal devices are used, these should be taken inside an enclosure designed or declared fit for that purpose by the manufacturer. At the very least, the joints should be crimped and encased in heat-shrink (possibly multiple layers to give added strength and protection). It isn’t best practice to put joints in containment such as this, however, I do realise that in some cases the requirements are such that there may be no other workable solutions. Where terminations are not MF, i.e. screw terminations, they must be taken into an adequate enclosure, as mini-trunking doesn’t fulfil this requirement. There will be increased strain on the terminations from this installation method, which will also need to be coded.

RICHARD WILLIAMSON: I found this after a call-out recently. The fuse in the owner’s lights kept blowing, so after replacing the wire four times he called us! Line to neutral fault. There is no CPC in the cable which had been left hanging outside live for more than 18 months. It certainly adds new meaning to the expression ‘croaked it’! We often see cases where wildlife has come to an unfortunate end from contact with electricity. In most cases, the said wildlife has found a way into an enclosure and succumbed to the effects of electrocution. The most frightening thing here is that this could very easily have been a person, as the live parts were not in an enclosure, but hanging freely to contact whoever or whatever came along. Regardless of the containment issue of the cable, it was not adequately terminated and taken into an enclosure, which is a requirement of BS 7671. This shows how important it is to make safe, isolate or remove unwanted circuits, to ensure no one is injured, after we have no further use for a particular part of an installation. At the very least, if complete isolation and removal can’t be carried out, the dis-used part of a circuit must be terminated appropriately and safely.

The Observations, Regulation infringements and Codes applicable to this observation would be. The Observations, Regulation infringements and Codes applicable to this observation would be.

Conductor joints do not possess adequate strength and durability, in order to prevent potential risk of exposure to live parts

526.1, 526.2

Conductor joints and terminations are not readily accessible for inspection and testing

526.3

Inappropriate method of jointing conductors

134.1.1, 526.3

Non-MF joint, not enclosed in a suitable enclosure

526.5

Strain on terminations due to poor installation method

522.8.5

Disused circuit conductors not terminated in an adequate enclosure: access to live parts

526.5, 416.2.1

Conductors not adequately terminated

526.1

Basic insulation not taken into an enclosure

526.8

Cable not adequately supported

522.8.4

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/eh109

Technical & training

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

Introduction Over time terminations within accessories can become loose leading to high resistance joints, creating a risk of fire. This typically occurs at accessories such as socket-outlets on radial and ring final circuits and may often go undetected through lack of periodic inspection and testing; where the main purpose is to identify any deficiencies present in an existing electrical installation and to verify it is safe for continued use. Prior to carrying out periodic inspection and testing of the continuity of conductors, as required by Chapter 65 of BS 7671, the circuit(s) must be isolated from the supply. An appropriate safe isolation procedure is outlined in the Electrical Safety First publication Best Practice Guide 2. The presence of any protective bonding conductor(s) connected to metallic pipework at one or more points within an installation may also introduce parallel paths which could influence the test results. Parallel paths may also conceal the fact that a protective conductor is not electrically continuous.

Where it is practical, such protective bonding should be temporarily disconnected before carrying out the test. Regulation 643.2.1 states that resistance measurements should be undertaken to verify the continuity of conductors, including protective conductors, protective bonding conductors, and the live conductors of ring ﬁnal circuits. Circuits incorrectly connected or having open end loop conductors on ring ﬁnal circuits may lead to overloading and hence damage of the circuit cables. Test instrument The expected measurements obtained during continuity testing should be of low ohmic value, although the measurements will vary with the circuit length and conductor cross-sectional area. Typical instruments would include, an ohmmeter having a low resistance range (typically 0-2 Ω or similar), or a multi-function instrument set to the continuity range. Test instruments such as a multi-meter should not be used as these are unable to generate sufficient current for the test. As part of the pre-test procedure, it will be necessary either to record the resistance of the test leads for subtraction from the overall measurement or use the autonull function, a feature found on many instruments. The end-to-end resistances obtained for each of the circuit conductors; the line (r1), neutral (rn) and the cpc (r2) should be recorded in the three columns provided on the associated schedule of test results, as shown in Fig 1.

RCD Operating current, IΔn

ften when carrying out an end-to-end resistance of the circuit protective conductor (cpc) in a ring ﬁnal circuit, it may at times be necessary to make a decision as to whether the values of resistance measured are reasonable. The aim of this article is to offer guidance to electrical contractors when faced with such a decision.

mA)

Maximum permitted Zs for installed protective device**

End-to-end (loop) resistance of ring final circuit protective conductors (Ω)

FIG 1

Circuit impedances (Ω)

Ring final circuits only (measured end to end) (Line) r1

(Neutral) rn

(cpc) r2

Insu

All circuits (complete at least one column)

(R1 + R2 )

Live / Live

(MΩ)

End-to-End loop resistance values

Ring final circuit A ring final circuit by nature of its installation begins and ends at the same protective device to which the circuit is connected. The line and neutral conductors forming the loop must remain unbroken without interconnections, as must the cpc unless it is formed by a continuous metallic covering or enclosure such as a steel conduit or trunking containment systems as shown in Fig 2. Typically, within a domestic property the ring final circuit is more often than not wired using flat twin and earth cables having 2.5 mm2 line and neutral conductors and 1.5 mm2 cpc. The resistance of the cpc will be proportionally higher than that of the line and neutral conductors due to the reduction in cross-sectional area (csa). Where this is the case, the end-toend resistance values measured for each conductor loop should result in the cpc having a resistance approximately 1.67 times that of the measured line or neutral conductor loop values. This ratio relates to the difference in csa between conductors: 2.5 = 1.67 1.5 However, this may not always be the case.

PROFESSIONAL ELECTRICIAN September 2019 33

Technical & training be 1.67. For example, where the ﬂat twin and earth cable has 4.0 mm2 line and neutral conductors and a 1.5 mm2 cpc, the ratio would be approximately 2.67 times greater. This method also applies for other sizes of ﬂat twin and earth cables having a reduction of cpc as shown in Table 1.

Table 1

FIG 2

Fig 2 Exposed metallic part utilised as (cpc)

It is important to recognise that conductors varying in length or having a csa other than 2.5 mm2 line and neutral and 1.5 mm2 for the cpc will result in a different resistance ratio other than 1.67.

Examples of expected ratios for various flat twin and earth cables

Line conductor (mm2)

Cpc (mm2)

Expected ratio

2.5

1.5

1.67

4.0

1.5

2.67

6.0

2.5

2.4

Cables having same size conductors Ring ﬁnal circuits in many non-domestic properties may be wired using other types of cable such as a steel wire armoured (SWA), mineral insulated (MI) or single-core cables. Such types of cable may result in the cpc having an equivalent csa as the line and neutral conductor, in which case the end-to-end resistance of the cpc loop should be more or less equal to that of the line and neutral conductor loop, typically within ± 0.05 Ω. Note: The value ± 0.05 is based on a general rule of thumb relating to the characteristics of the testing instrument(s).

Exposed-conductive-part utilised as a protective conductor. Where cables have a metallic sheath or braid or where circuits are installed within a metallic conduit or trunking system, and the circuit protective conductor forms part of the metallic path as permitted by Regulation 543.2.2, the ratio method previously mentioned would not be appropriate. Where this is the case, the size of the cpc shall be calculated in accordance with Regulation 543.1.3, or alternatively selected in accordance with Regulation 543.1.4. Summary Care should be taken to ensure that the test results obtained for a particular circuit are consistent for the cable size. Any inaccurate decision may lead to the rejection of a healthy circuit. Factors that can affect the measured value of the end-to-end loop resistance include the length of run, cross-sectional area and type conductor material. In addition the presence of parallel paths may also inﬂuence such test results. For further guidance on maximum length of run for ring ﬁnal circuits in domestic premises, refer to Appendix A of the Site Guide published by NICEIC and ELECSA.

Therefore, care must be applied when making a judgment in determining whether the test results are consistent for a particular size cable. Any inaccurate decision may lead to the rejection of a healthy circuit and the recording of an inappropriate departure code on the report. For some types of installations it may be noticed that the ring ﬁnal circuit has been wired using a ﬂat twin and earth cable having an increased csa of conductors than is perhaps typical. This may be for example, to meet the design requirements for volt drop or where the cable is expected to pass through thermal insulation, or where high ambient temperatures are expected. Where this is the case and the line and neutral conductors are larger than a 2.5 mm2, the ratio of the resistance of the cpc to that of the line and neutral conductors will not

• •

Publications covering this, and related subjects, are available from

www.niceic.com

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 September 2019 PROFESSIONAL ELECTRICIAN

TECHNICAL & TRAINING

Andy Speake, National Technical Manager at Aico, explores the recently revised British Standard for domestic fire alarms and what this means for contractors.

CHANGES TO DOMESTIC FIRE ALARM STANDARDS S 5839-6 is the code of practice for the design, installation, commissioning and maintenance of fire detection and fire alarm systems in domestic premises. Since its introduction in 1995, BS 5839-6 has been adopted as standard practice in both existing dwellings and new builds; its importance can’t be over-emphasised! A new version of BS 5839-6 was released on April 30th, which has some major changes. These relate to the Grades of alarms, which determine the type of alarm to be used, and the Category, which identifies the type/level of protection for each identified dwelling.

Changes to Grades Under BS 5839-6, Fire Alarms are classified into Grades from A to F. Grades B and E have been removed, but with Grade D being the current most common for domestic properties, I’ll focus on this. Under the previous standard, Grade D required one or more interlinked mains

powered Smoke Alarms (and Heat Alarms if required), each with an integral back-up supply; the back-up supply to be in the form of a rechargeable lithium or alkaline battery. Under the revised BS 5839-6, Grade D has been replaced with Grades D1 and D2 which differ in terms of the back-up power supply: D1 calls for a tamper-proof standby supply consisting of a battery or batteries, with lithium being the standard battery type. These are long life battery cells lasting the recommended lifespan of the alarm and are designed so they can’t easily be removed by the user. Grade D1 alarms are the preferred option for social housing as they remove the risk factor. D2 requires an integral standby supply consisting of a battery or batteries (usually 9V PP3) which need to be replaced at regular intervals throughout the life of the alarm by the user.

Property types get new minimum levels of protection Under BS 5839-6, different classes of premises are identified and the minimum Grade of Fire Alarm system and Category of fire protection provided for that specific type of property are listed. It is here, in the 2019 revisions, that we’ve

PROFESSIONAL ELECTRICIAN September 2019 37

TECHNICAL & TRAINING

seen the biggest changes that will have a major impact on what type of Fire Alarms are fitted and where. In the main, this is due to an increase in the Category of fire protection from LD3 where previously listed, which requires one mains powered Optical Alarm in the hallway and another upstairs on the landing, interconnected together, to Category LD2. LD2 involves additional alarm coverage, with a Heat Alarm in the kitchen and a further Smoke Alarm in the main living area; once again all interconnected. This upgrade in fire protection is most notable in existing rental properties and Houses in Multiple Occupation (HMOs): 1. Existing 2-3 storey maisonettes and houses in the rental sector have now been upgraded from the low Category of fire protection (LD3) to the medium Category LD2 and graded D1, i.e. mains powered alarm with tamper-proof battery back-up power. Properties of this nature remain LD3, unless a risk assessment indicates otherwise.

C-TEC DELIVERS TRAINING for

BS 5839-6

2. Existing Houses in Multiple Occupation (HMOs) have been set as Category LD2, whereas before it was a mixture of LD2 and LD3 depending on the nature of the property and inhabitants. Grade D1 is now the requirement.

C-TEC has launched a new CPD-certified seminar entitled “A Guide to BS 5839-6:2019 Domestic Fire Alarms”.

Other property types that have made an appearance in the BS 5839-6 property classification are supported housing and short-term holiday lets. Both are allocated the highest category of protection – Grade D1, LD1. The increase in the level of fire protection required in these instances means additional alarms per property which has an associated cost, not just in alarm units but also installation. Some of this cost can be mitigated by using wireless alarm interconnection technology, such as Aico’s RadioLINK+ and SmartLINK, and by using alarms that have been designed to be quick and easy to install. Larger systems also benefit from an Alarm Controller, which enables all alarms on a system to be tested and silenced from a single point, as well as a located feature to identify the precise alarm which originally triggered. BS 5839-6:2019 builds on the success of the original standard and, if adhered to properly, ensures greater safety and even better practice in the industry.

his topical and informative seminar highlights what’s new in the recently updated code of practice for the design, installation, commissioning and maintenance of fire detection and fire alarm systems in domestic premises, with particular emphasis on the revised system of grading for such systems. Andy Green, C-TEC’s Marketing Manager, says: “Our new CPD-certified seminar is free-of-charge and an absolute must-attend for anyone involved in the design, specification and installation of domestic fire alarm systems.” At the end of the seminar, delegates will also have the opportunity to see demonstrations of C-TEC’s vast range of life-safety systems, including Hush Pro, its revolutionary new BS 5839-6 Grade C domestic fire alarm system. Designed to seamlessly integrate domestic fire systems with a communal/landlord fire system, Hush Pro can be used to enhance existing stay-put strategies, fire policies and procedures in high-rise residential buildings and HMOs.

Aico has added a useful page to its website, offering you all the details you need to know about the revised changes to BS5839-6. To access it, go to: www.rdr.link/eh110

To register your interest, and find out more about details and dates for future seminars, e-mail: hush-pro@c-tec.co.uk, or go to: www.rdr.link/eh111

TECHNICAL & TRAINING

WHERE AUTOMATIC DISCONNECTION IS NOT FEASIBLE OFF

NAPIT’s Bill Allan reviews Section 419. S 7671:2018 contains a new Section 419 – Provisions where automatic disconnection according to Regulation 411.3.2 is not feasible. In the context of BS 7671, this basically means practicable or doable. As Regulation 411.3.2 concerns the maximum permitted disconnection times in case of a fault, any situation where automatic disconnection is not feasible is likely to cause some anxiety. It has been acknowledged in past editions of BS 7671 – and in the present edition – that there are situations where overload and fault current protection can

be omitted if unexpected disconnection of a circuit could cause danger or damage (Regulations 433.3.3 and 434.3). Regulation 433.3.3 gives examples: the exciter circuit of a rotating machine, the supply circuit of converter. Uninterruptible power supplies may include a power electronic converter a lifting magnet, a a protective device. circuit supplying a safety service or a This article will consider the circuit supplying medical equipment used requirements of Section 419. for life support in specific medical locations where an IT system is Regulation 411.3.2.5 incorporated. This regulation Before considering Section 419, we must recommends that, in such situations, first consider Regulation 411.3.2.5 which consideration should be given to the refers to, and effectively introduces us to, provision of an overload alarm. Section 419. The present Regulation Similarly, Regulation 434.3 states that devices for protection against fault current 411.3.2.5 is different to the former version and allows for circumstances where: need not be provided in some situations and it also gives examples of such ● the use of an RCD for this purpose is not situations, which include those quoted in appropriate, Regulation 433.3.3. ● it is not feasible for an overcurrent Regulation 433.3.3 and Regulation 434.3 protective device to disconnect the should be consulted for the full details. supply within the required However, Regulations 433.3.3 and disconnection time in the event of a 434.3 are different from Section 419, which fault (as required by Regulation 411.3.2). is not intended for the purpose of omitting

40 September 2019 PROFESSIONAL ELECTRICIAN

AC Mains Input

Input rectifier and filter

Inverter ‘Chopper’

Output Transformer

Output rectifier and filter

DC Output

Chopper controller

Block diagram of a switched-mode power supply (SMPS) converting an AC input to a DC output.

Where is it not appropriate for an RCD to be used to comply with the required disconnection times? In certain non-domestic premises, unexpected disconnection of a supply by an RCD can cause danger or damage or be disruptive to production. This could happen, for example, in a production line or in a computer suite. Regulation 411.3.3 permits RCDs to be omitted in non-domestic premises where a documented risk assessment determines that the risk to people in the building is sufficiently low, so that RCD protection is not deemed to be necessary. The omission of RCDs entails careful consideration of the risks involved. It should involve liaison with those on-site who have detailed knowledge of, and who are responsible for, the operations or work activity. The risk assessment must be attached to the electrical certificate and reviewed at appropriate intervals to ascertain that it remains accurate. Where is it not feasible for an overcurrent protective device to be used to comply with the required disconnection times? This topic is covered in Section 419. Regulation 419.1 Contains requirements for circumstances where automatic disconnection of the supply within the required disconnection time may not be feasible, for example where:

● the source of supply is inherently

incapable of delivering sufficient earth fault current with respect to the time/current characteristics of the overcurrent device (as could be the case where a power electronic convertor is used), or ● the required disconnection times cannot be achieved by a protective device (for example, the earth fault loop impedance may be too high) In such circumstances, Regulations 419.2 and 419.3 apply. Regulation 419.2 – power electronic convertors Regulation 419.2 contains requirements for installations where a power electronic convertor is used, the nominal voltage of which is greater than 50 V AC or 120 V DC, and where automatic disconnection is not feasible. A power electronic convertor is the application of solid-state electronics for the control and conversion of electrical power. It may be converting AC to or from DC, or the voltage or frequency – or a combination of these. Devices that are used in this way include: ● switched-mode power supplies, ● PV installations, ● EV charging installations, ● speed control of motors. In the event of a fault between a live conductor and the protective conductor or Earth, the output voltage of the source must be reduced to 50 V AC or 120 V DC

or less within the time required for automatic disconnection. Regulation 419.2 then refers to BS EN 62477-1, which is entitled: ‘Safety requirements for power electronic converter systems and equipment. General.’ BS EN 62477-1 is classed as a group safety standard. This is a reference standard to be used by committees in the development of product standards. It covers a wide range of equipment. It is expected that manufacturers of power electronic convertors will have to comply with BS EN 62477-1 and provide information for installers. The power electronic convertor used must be one for which the manufacturer gives adequate methods for the initial verification and periodic inspection and testing of the installation. Regulation 419.3 – Supplementary bonding Except where Regulation 419.2 applies and where disconnection cannot be achieved within the required time, Regulation 419.3 calls for supplementary protective equipotential bonding to be provided in accordance with Regulation 415.2. This is in order that the voltage between simultaneously accessible exposed-conductive-parts and/or extraneous-conductive-parts does not exceed 50 V AC or 120 V DC. Conclusion Although Section 419 contains provisions where automatic disconnection in the event of a fault is not feasible, Regulation 411.3.2.5 states that disconnection may be required for reasons other than protection against electric shock, such as protection against fire and thermal stresses in equipment. As a NAPIT Registered Installer, you can access a wealth of technical information, guidance and advice. If you would like more information on joining a NAPIT scheme, visit: www.napit.org.uk, call 0345 543 0330, or go to: www.rdr.link/eh112

PROFESSIONAL ELECTRICIAN September 2019 41

TECHNICAL & TRAINING

OVERVOLTAGE PROTECTION & COMMERCIAL INSTALLATIONS The technical team at Crabtree clears up the requirements for overvoltage protection in commercial sites, as stated in the 18th Edition regulations.

lectrical installations in commercial premises are not mentioned very often when discussing the new wiring regulations. The irony is that, in some cases, it’s the commercial premises and its users that are most likely to benefit from the new standards. Overvoltage protection is a clear example of this. The 18th Edition says that overvoltage protection must be provided where the consequences of overvoltage incidents could result in:

E ● ● ●

● ●

Serious injury to, or loss of human life, or Interruption of public services, or Interruption of commercial or industrial activity, or Damage to cultural heritage, or Affect a large number of co-located individuals.

Clearly, a wide variety of types of premises are included in the scope of regulation 443.4. The question for the designer of the installation is how to match the likelihood of those consequences to the premises concerned and make sure that they comply with these requirements. A simplistic approach would lead us to consider hospitals and care facilities when injury or loss of human life is mentioned. Offices and factories come to mind when

considering avoiding interruption of commercial and industrial activity. Emergency services, data centres, financial organisations, and transport networks come under public services that need to be continually available. But many of these types of premises will also have a large number of co-located individuals within, and that means that there’s often more than one reason from regulation 443.4 to consider when providing overvoltage protection in commercial installations. Overvoltage protection kits To assist designers and installers with overvoltage protection requirements Crabtree has recently introduced a simple kit for use with MCB distribution boards. This easy-to-install kit includes the overvoltage protection device, fixings, a cable loom and a three pole MCB. This makes it a simple design choice on large installations to include overvoltage protection at each distribution board location. Kits are available for 125A and 250A rated B type distribution boards in the Loadstar and Polestar Compact product ranges. These Type 2 surge arresters include local status indication on the device and an option for remote signalling. It’s difficult to imagine many types of commercial premises that are not covered by one or more of the risks listed earlier, but

42 September 2019 PROFESSIONAL ELECTRICIAN

for all other cases that you may come across, a risk assessment to regulation 443.5 must be carried out. The risk assessment will determine the risk level, so that the designer can decide whether to include overvoltage protection or not. But it is worth noting that instead of doing the risk assessment, the designer can opt to include overvoltage protection, i.e. save time on designs and provide overvoltage protection as standard. Electronic equipment Protection against overvoltages of an atmospheric origin or due to switching is a requirement of the 18th Edition. Using the appropriate devices to meet these requirements will further protect the electrical installation and the valuable electrical and electronic equipment from damage by overvoltages, thereby maintaining the vital services that we all rely on every day. To download a handy poster, offering simple guidance on overvoltage protection requirements, go to: www.rdr.link/eh113

PRIZE DRAW

W IN

Spotlight Andrew Johnson, Founder & CEO of the Aurora Lighting Group, explains how 20 years of growth and success has led to the following announcement.

HAS CHANGED TO

WIN A BUMPER WORKWEAR & SAFETY SHOE PACKAGE Worth over £200 each, we’ve got three to win. Included in this month’s prize trio package are the Snickers Workwear latest 6351 Loose Fit Stretch Trousers plus Solid Gear’s Onyx Safety Shoe and the newly-launched Rugby Top. The new stretchy work trousers for men have a loose fit for a classic Snickers Workwear look and feel, with stretch Cordura for increased durability as well as improved ventilation and close quarter mobility. The good-looking Onyx Safety Shoe integrates a seamless upper and Cordura reinforcements with a breathable footbed and strong rubber outsole for maximum grip on slippery and uneven surfaces – plus a fiberglass toecap. Finally, the stylish Rugby Shirt is made from a soft but durable fabric for casual comfort and great everyday use on-site.

HOW TO ENTER To enter your details into the draw to win one of these fantastic prize packages, simply go to: www.rdr.link/eh114 and fill out the contact form. Three winners will then be chosen at random. Deadline for entries: 10/10/2019. Usual T&Cs apply.

After five years of outstanding success, Enlite Lighting, the LED lighting brand established by the Aurora Lighting Group, will be rebranded Aurora Lighting from September 2019. The Aurora Lighting Group is an international LED lighting and technology organisation, renowned globally for its quality, reliability and service, servicing the residential, commercial, industrial, retail and hospitality sectors. Combined with award winning marketing and distribution, the Group serves customers through a global network in more than 70 countries. Five years ago Enlite was launched by The Aurora Lighting Group in response to market changes. Big Performance, High Quality and Great Value is what Enlite stands for, and these qualities have led to sales far exceeding expectations, with the range quickly becoming the number one choice for contractors and specifiers alike. From its market leading fire rated downlights to the popular Ariah™Pro highbays, Enlite products are now installed in thousands of homes and businesses around the world. During this period, Aurora continued to push boundaries and innovate, becoming a globally recognised leader in smart connected lighting that provides exceptional Value Beyond Illumination™. To continue on the back of both Enlite and Aurora’s success, and to assist our customers with the sale and promotion of these products in the UK and internationally, our extensive trade range and the AOne™ smart platform will be driven through one brand: Aurora Lighting. Bringing all our lighting products together enables greater focus, meaning there’s one brand, one catalogue, one website, making our entire product portfolio easily accessible. Therefore, from September 2019, all our Enlite products will be rebranded under Aurora. The product and part numbers will remain the same, just the brand will change. In addition, look out for new exciting products to be launched in September.

For more information, please contact us on 01727 83 66 11 or info@auroralighting.com

auroralighting.com/gb/news

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: WHEN I’M TESTING INSTALLATIONS, MAKING TESTS AT SOCKET OUTLETS IS A PAIN. REMOVING THE SOCKET FROM THE WALL TO ACCESS THE TERMINALS IS TIME-CONSUMING AND OFTEN DAMAGES THE ROOM DECORATION. I COULD MAKE A TEST LEAD OUT OF A PLUG AND A BIT OF CABLE, BUT THIS DOESN’T SEEM PARTICULARLY SAFE. IS THERE A BETTER WAY?

46 September 2019 PROFESSIONAL ELECTRICIAN

We say: There certainly is – and it’s called a socket interface adaptor. It’s actually similar to your idea for a homemade test lead, but it’s been designed with safety in mind. Megger’s version, the SIA10, consists of a moulded-on plug and a short length of cable terminated with safe, fully insulated 4mm test plugs. The 4mm plugs are all colour coded. It’s a big time saver, especially in applications where the sockets are in awkward locations, and so are difficult to remove to gain access to the wiring. Another big benefit is that if you should accidentally leave the adaptor plugged in when you’ve finished your tests, there are no exposed live parts, so there’s no danger to your customers or their children. You can use the SIA10 for all of the tests you would normally carry out at a socket outlet, including phase-to-earth and phase-to-neutral loop impedance testing. It certainly cuts out a lot of hassle!

TECHNICAL & TRAINING

“THE ONLINE COURSE WAS PERFECT FOR ME!” A trio of PE’s product testers give their thoughts on the IET Academy’s online 18th Edition training.

t’s now a full nine months since the 18th Edition IET Wiring Regulations came into effect, bringing with it the need for electricians to receive professional training in order to help them prove and demonstrate a full understanding of BS 7671:2018. With thousands of electricians operating around the UK, there’s certainly no shortage of training options available to them. However, narrowing down the best route for the individual can be a difficult exercise, especially when you consider the time that delegates have to plan away from their day-to-day work if they’re undertaking class-based, on-site training. In recent years, training has become a much more flexible beast, with e-learning and online training/ examinations now a more than viable alternative to the traditional class-based pathway. Whether your preference is mouse clicks or pen and paper, there’s a suitable route for you.

As joint publishers of the Regulations (alongside BSI), the IET is in a particularly strong position to deliver key training material to electricians and, through its IET Academy, has introduced a comprehensive yet flexible online training course to help delegates get up-to-speed with the 18th Edition. The course, which is suitable for anyone needing working knowledge of BS 7671, has been authored by those with industry experience and understanding of the new regulations, and ensures that electricians can complete it anywhere, at any time. Keen (as always) to put such solutions to the test, three members of PE’s ‘product testing’ team were given the chance to undertake the course with both the full and update (for those with the 17th Edition already) options available to them. Let’s find out what they thought:

KELLY VINCENT – KELLY ELECTRICS I’d not previously undertaken any direct training with the IET and, as I’m already a 17th Edition qualified electrician, I opted to take the update course. The software starts with an introduction, including details of what the course involves, so you can be sure you’re taking the right course for you. It then goes into the history of BS 7671 and explains the numbering system. Each module of the course is split into sections of the Regulations, with an assessment at the end of each module. You’re then awarded points for every module and assessment you complete, and when you’ve reached the golden target of 760 points, you’ve basically

PROFESSIONAL ELECTRICIAN September 2019 49

TECHNICAL & TRAINING

to fit the training into my schedule and take as much (or as little) time on each section as I wanted. Although I’m yet to sit my C&G exam, I certainly feel a lot more confident about completing the course now I’ve undertaken this training, and I believe that sceptics can take further assurance from the fact that the IET (a highly respected organisation) has put its name to it. This course has certainly changed my mind about the quality and ease of use of online training courses, and I would have no problems with undertaking any other online course offered by this particular provider.

completed the course. One aspect that I particularly liked at the end of each module was the option to try ‘Practice Final Exams’, which I found really useful to test and refresh what I’d learned in the previous weeks of studying. The IET Academy uses a lot of visual aids and examples throughout the modules to ensure a good understanding of each Regulation. Throughout the training, I found that the information was clear, easy to follow and to understand. As a business owner and electrician, life can be extremely busy, and I find it very difficult to take time out of my working schedule. So, the online nature of this course was ideal for my own circumstances, allowing me to complete things in my own time – an hour here, half a day there – and at a pace I was happy with. I found that I could move quickly through the things I knew already, and then take it slowly and absorb the information when it came to things I wasn’t so clear about. After completing the course, I now feel that the new Regulations are always at the tip of my tongue and I have the confidence of knowing that when we design an installation, it’s all according to the latest Regulations. Sometimes we can go months without needing to pick up the On-Site

Guide or BS 7671 but I now know where to find the right information, and quickly. One observation that I’d make is that I’m unsure how effective the online training route would be for ‘unqualified’ electricians. I’d imagine that those who are only just starting in the trade would benefit much more from sitting down in a classroom and receiving full explanations and examples from a teacher, especially if they need to ask unlimited questions to help gain a complete understanding of the subject area. That said, the IET’s online training was absolutely perfect for me and I even managed to pass the follow-up C&G exam first time around. GEORGE ROBERTSON – G ROBERTSON ELECTRICAL CONTRACTORS I’m not ashamed to admit that, prior to reviewing the IET’s online training for this article, I’d never taken any kind of online course before, though this may well have something to do with my age! I missed the amendment three update to my 17th Edition, so was keen to take the full 18th Edition course this time around. I have to say that I found it all to be very easy to follow and was surprised at the simplicity of the process, allowing me

50 September 2019 PROFESSIONAL ELECTRICIAN

REECE FITZHARDY – RF ELECTRICAL SERVICES As I’d never previous undertaken any kind of training with the IET, I was particularly intrigued to see what this offering would be like, opting for the ‘update’ version of the course. After commencing the online training, I was impressed at the delivery of the modules and how simple the course was to follow. The robust system also really keeps track of your progress throughout (even if you accidentally close a screen down) and I was pleased to receive a certificate on completion once I’d finished. In my opinion, this type of online training is a far less intense experience than the pressure of the classroom, and allows you to fit the training around your day job, rather than the other way around. One slight drawback is that you have to book the follow-up C&G exam through a separate training provider (which can sometimes be a few months after, depending on the availability that particular provider has), so it would be nice if you could complete the exam as part of this online training so that everything is fresh in your mind. I certainly feel much more confident about the requirements of the Regulations now and am pleased to say that I also passed my follow up exam! For more details about the IET Academy and the 18th Edition online training, go to: www.rdr.link/eh115

Technical & training

PART P COMPETENT PERSONS SCHEMES REGISTRATION FOR ENGLAND AND WALES

Sealing of wiring system penetrations The aim of this article is to provide guidance on suitable measures to prevent and minimise the risk of spread of fire when installing wiring systems within domestic and similar types of premises.

Introduction Sealing of wiring systems and openings is a fundamental requirement of the Building Regulations in England, Wales, Scotland and Northern Ireland. In addition, Regulation Group 527.2 of BS 7671 highlights the need for sealing such systems where they penetrate an element of a building’s construction. The requirements of Regulation Group 527.2 and the relevant Building Regulations are intended to preserve: fire separation between areas of the building, and

Many modern forms of engineering construction such as timber framed buildings inherently have reduced levels of fire resistance in comparison to the traditional brick building. They rely heavily on such methods as fire compartmentation between separate areas, voids and/or cavity walls, as a means of maintaining the structural stability. Plasterboard and other similar types of lining are commonly used as a means of achieving adequate levels of fire resistance which must be maintained throughout the building.

Sealing requirements Regulation Group 527.2 requires both

•

• •

structural stability of the premises in the event of a fire. For example, in most domestic premises it is the loadbearing capacity of the floors that is threatened by early failure of the ceiling linings due to fire.

The requirements to seal openings apply not only for elements of the building construction that sub divide the building into fire compartments, in which many domestic dwellings consist of only a single fire compartment, but also apply wherever a wiring system penetrates any element of a buildings construction having a specific fire resistance.

•

external sealing, such as the filling of gaps around a cable where it passes through a plasterboard ceiling and into a luminaire for example, and internal sealing typically, within cable ducting, conduit and trunking systems of internal cross-sectional area not exceeding 710 mm2. However, wiring containment systems having a smaller cross-sectional area classified by a relevant product standard as nonflame propagating in addition, offering ingress protection to IP331 need not be internally sealed (Regulation 527.2.3).

Note: A non-flame propagating wiring system is one that is liable to catch fire when exposed to a flame, but the flame will fail to propagate along the wiring system and will extinguish itself within a limited time. Such wiring systems must be in accordance with the relevant British Standards.

The method used for sealing openings must be such that the fire resistance of the element of the building construction is restored to its original level (if any) prior to penetration of the wiring system. Regulation 527.2.4 requires the sealing arrangements to resist external influences to the same degree as the wiring systems with which they are used and to meet all of the following conditions: i. It shall be resistant to the products of combustion to the same extent as the elements of the buildings construction, ii. Provide the same degree of protection from water penetration as required for the element of the buildings construction, iii. Be compatible with the material of the wiring system with which it is in contact, iv. Allow thermal movement of the wiring system without reduction of sealing protection, v. Have adequate mechanical stability to withstand any stresses that may arise through damage to the support of the wiring system due to fire.

Sealing Methods Various types of fire-stopping products or solutions can be used for external sealing and may include intumescent mastics/ gaskets, pillows, compounds and metal sleeves. Commonly used products such as intumescent materials have the ability

PROFESSIONAL ELECTRICIAN September 2019 53

Technical & training

Flush mounted cavity box Fire resistant boarding

Flush mounted consumer unit

EALA E S S E E IRR

Intumescent gasket

FFI

ANT L A E E SS FFIIRREE

Fire resistant light fitting

Intumescent sealant Fire resistant boarding Intumescent grommet

Fig 1

Intumescent sealant

Examples of sealing methods where cables enter accessories.

to expand when exposed to heat therefore, sealing the opening around the cable system. Depending upon on the type of product used a typical seal can last from 1 to 4 hours. During the erection of a wiring system temporary sealing arrangements as required by Regulation 527.2.1.1 shall be put in place. This normally requires the use of such products as intumescent pillows or other similar types of removable fire-stopping. Typically, this method of fire stopping is often used in trunking or dividing walls within a roof space where cables are likely to pass through one area and into another. Furthermore, where it has been necessary to disturb a sealing arrangement or fire barrier during alteration work Regulation 527.2.1.2 requires these prevention methods to be reinstated as soon as practicable. In addition, the applied reinstatement should be of the same type of materials/components as were

• •

Grommet

originally used. The mixing and matching of systems and components is not supported by manufacturer’s fire test data and may compromise the fire integrity of the installation. Where it is not possible to clearly identify or obtain components for the original seal used, the whole seal should be replaced.

Accessories installed in timber framed cavity walls Typically, many buildings incorporate cavity walls having a timber and plasterboard construction, not precluding other methods of construction. Appropriate measures shall be taken to maintain the fire integrity of such walls with the inclusion of installed equipment and/or accessories such as a consumer unit, cavity boxes and the like.

However, it must be noted that not all fire rated products qualify as a suitable fire-stopping product. For example, some expanding polyurethane (PU) foams which are suitable and tested for sealing linear gaps are not tested or suitable for cable or pipe penetrations, in all cases manufactures product data must be considered. 1

IP33 equates to resistance of small objects (2.5 mm)

and water spray at an angle of up to 600 from the vertical.

Cable entries must be provided with suitable sealing arrangements including, intumescent gaskets, grommets and/or fire sealants to maintain the degree of fire integrity of the equipment as shown in Fig 1.

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

54 September 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:

Disabled Accessible Disable ed Persons Toilet o Alarm Kit Toilet

Accessible TToilet ooilett Reset Point c/w Sounder

Single Zone Call Controller c/w 12V 140mA PSU

Overdoor Light c/w Sounder

MULTI-ZONE ACCESSIBLE TOILET ALARM SYSTEMS

Ceiling eiling P Pull ull U Unit nit C

Anti-Bacterial Wipe Clean Pull Cord Accessory Pack

Have ave yyou H o seen our stylish and very cost-effective ctive new 800 Series 1100 and 20 zone call controllers? Compatible with our entire range of 800 Series call points, ceiling pulls, monitoring points, infrared receivers and overdoor lights, they’re ideal for use in multi-zone toilet alarm systems, changing room/interview room call systems and infrared panic attack systems.

www.youtube.com/user/CTECUKTV www.youtube.com/user/CTECUKTV

www.c-tec.com Want to find out more about C-TEC’s products and services? ZZZ UGU OLQN HK

S Y A W ] A E V I G [

GIVEAWAYS

IDEAL INDUSTRIES EMEA

to win

VELOCITY PROGEAR Rogue 5.0 Backpack Velocity Progear loves tools like you do, so it designed the Ultimate Install-Service Backpack for professional tradesmen on the move. The Rogue 5.0 Backpack's front & rear compartments are designed for vertical tool storage for Install-Service applications. Rogue 5.0 enables you to store and access your tools effortlessly, the Backpack incorporating high-performance fabrics, magnetic buckle systems and YKK interlocking zips for the ultimate storage solution on the move. Velocity Progear will launch three further Rogue models this month (Sept 19/20) at the Toolfair/ELEX Exhibition in Coventry. Special offers and discounts will be available during the show. This month one winner will bag a Rogue 5.0 backpack, while three runners-up will each receive a Raptor Tech Case. To enter the draw, go to: www.rdr.link/eh116

Push-In & Lever Wire Connector Premium Kit The 30-5006 EU kit includes a selection of In-Sure Push-In, In-Sure Lever and the innovative in-line SpliceLine Wire Connectors. The In-Sure push-in wire connectors provide electricians with a time-saving, modern and safe alternative to traditional screw-down terminal strips. Suitable for a variety of applications, the durable connectors can reduce wiring time by up to 50% as the simple glide-in wire connection of the In-Sure range makes installation easy. to win The In-Sure Lever Wire Connectors are a versatile tool-free alternative to traditional connector strips for joining solid, stranded or flexible conductors. Utilising a combination of push-in and lever clamp technology, the innovative design securely retains both rigid and flexible conductors whilst allowing them to be easily removed if required. When inserting rigid wires there is no need to lift the levers because the conductors simply push straight in, making them much easier and faster to install than both connector strips and similar competitor products. The SpliceLine in-line wire connector is an innovative alternative to traditional butt splices that doesn’t require crimping, soldering or heat shrinking to create secure end-to-end connections.

We have 3 x Push-In & Lever Wire Connector Premium Kits to give away this month. To enter the draw, go to: www.rdr.link/eh117

HB42 The Ultimate HB42 All-in-One ‘Eco-Foil’ Package Using advanced hybrid polymer technology to give outstanding trade strength and adhesion, the HB42 All-in-One Sealant and Adhesive is now available in a more sustainable 400ml foil pack, removing the environmental problem of disposing of the single-use plastic cartridge. It is estimated that over two million single-use plastic cartridges are put into landfill every week in the UK. The HB42 foils produce around 95% less waste than one-use plastics and hold 400ml, whereas the plastic tubes holds 290ml, so you’re getting 38% more in the tube. HB42 All-in-One seals, sticks and fills, is flexible up to 230%, works in the wet, does not shrink and can be overpainted. It is also low in VOCs and bonds to almost anything, is food safe and fully cures within 24 hours.

5 to win

We have 5 x prize packs up for grabs this month, consisting of a case of 12 HB42 ‘Eco-Foils’, an exclusive Professional Electrician and HB42 Foil Gun (600ml Foil Gun can be used for foils and cartridges), nozzle pack, HB42 T-shirt and a HB42 refillable bottle. To enter the draw, go to: www.rdr.link/eh118 PROFESSIONAL ELECTRICIAN September 2019 59

PRODUCTS & BUSINESS SOLUTIONS

CALM AND COLLECTED We take a look at the simple process required to fit the Blauberg ‘Calm’ extractor fan. lauberg Calm fans are a unique range of contemporary extractor fans that offer significant advantages over traditional ventilators designed for the home. The Calm extractor fan range delivers higher airflow rates and less noise. In addition, the fans are offered in a range of colours that will fit any modern or traditional bathroom.

Blauberg Calm is Building Regulation Part F and L compliant and can be mounted within bathroom zones 1 and 2. The fitted shutter minimises back-drafts when the fan isn’t in use. There are plenty of control options to choose from depending on your needs, from simple 2-wire pull cord operation, humidity and damp control options, automatic PIR movement detection to the most popular model with a built-in timer.

Wiring a Blauberg Zone 1 bathroom ba athr t oom fan with a run-on n-on timer. timer r.

To download a technical data sheet offering more information on the Blauberg Calm fan range, go to: www.rdr.link/eh119

Featuring F ea e turing the Calm F Fan! a an!

1. Isolate Isolate power power at at the local local switch!

2. Remove move the wa waterproof aterpr t oof casing & wires es through through the gland to pull wir rating. maintain the fan’s IP ra atting.

lastic adjustment 4. Using the p plastic justment too tool ol provided, turn the timer anti-clockanti-clockprovided, owest setting (2 mins). wise to its llowest

3. Identify & a attach tta tttach the switch live, permanent live + neutral wir wires es to the correct correct terminals on the fan.

5. A Apply pply pow power er at at the isol isolation la attion switch & wait for 2 mins.

PROFESSIONAL ELECTRICIAN September 2019 61

PRODUCTS & BUSINESS SOLUTIONS

Gripple’s UK Technical Manager Frazer Belafonte looks at the latest innovations and techniques in M&E installation.

M&E INSTALLS: IS THERE A QUICKER WAY? hoosing the right products and methods when installing suspension systems for mechanical and electrical services can deliver faster project completion, enhanced aesthetics and significant cost and CO2 savings.

Time is money Today’s generation of modern suspension systems – used to install a range of mechanical and electrical services – reduce installation times greatly when compared to traditional threaded rod and channel methods. Gripple’s Fast Trak offers trapeze bracket solutions for electrical containment supports for projects where ceiling void space is at a premium. It offers the same speed of installation as wire ropes, with off-site manufactured brackets and pre-fabricated short drop components which are ready to use on arrival. Fast Trak’s design allows the installer to make height adjustments to the install without the need for tools. Brackets can be moved up and down the tracks before being secured in place. Such ease of use allows contractors to make significant savings on installation times; one M&E

contractor has reported completing one floor of a project in just a day using Fast Trak, which would have taken one week using traditional methods. With intuitive systems, savings are made on-site but also in the time needed to train installers. This allows contractors to make efficient use of their workforce and deliver more competitive quotes for projects. Safety first Health and safety is a key concern on every site and pre-fabricated systems ensure the risk of accidents is significantly reduced. Ready-to-use solutions remove the need for hot works permits on-site as, unlike traditional threaded rod and channel options, there is no requirement to cut and file materials to size. This removes a time-consuming and hazardous activity from the installation process. The simplicity of Fast Trak also ensures significantly less time is spent at height when installing services. Efficiency efforts Traditional suspension solutions, such as threaded rod, are supplied in three metre lengths, meaning delivery is facilitated by 30 foot articulated lorries, so on-site

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storage and handling can be cumbersome. New solutions are supplied as ready-to-use kits in compact, stackable packaging, meaning vehicle movements to site are reduced significantly and storage can be easily attributed to the correct locations. Managing awkward spaces The need to maximise space in residential and commercial buildings, as well as increase the number of storeys, can put pressure on designers to reduce the ceiling void space where building services are housed. Space saving brackets, like Fast Trak, are designed with all the time-saving simplicity of wire rope solutions, but with particular focus on suitability for ‘short drop’ applications. The Fast Trak system has a bracket depth of just 21mm and the side loading option can be installed in multiple tiers to accommodate additional services, and more lightweight services can be side loaded onto the bracket. Pre-fabricated short tracks mean cable containment supports are closer to the ceiling where space is limited. The multi-tiering option creates more efficient use of space and many mechanical and public health contractors have experienced the benefits of the Fast Trak system.

Clash detection BIM modelling on building projects is increasingly prevalent in the UK construction industry and mandated on centrally-funded projects. Choosing modern suspension systems where BIM models with all required data can be provided ensures compliancy and contributes to a building design process which improves efficiency across the lifecycle of the project, reduces waste and encourages collaboration across the supply chain. Alongside BIM support, design services provide a hassle-free way to plan the next installation. Bespoke suspension designs are based on customer drawings, providing exact specification to eliminate waste and reduce clash detection, minimising the risk of encountering problems during the installation. It also ensures exact requirements of pre-fabricated solutions are delivered to site. Extra help There are also a number of wire rope-based systems, ideal for electrical containment installation, which provide all the same time and labour saving simplicity. Trapeze Plus FR is one example; a single channel suspension solution with an integral adjustment button which offers easy and tool-free adjustment during installation. It is also durable, including fire-rating in accordance with BS476 and BRE certification up to F120. The future of M&E installation Quick installation with non-labour intensive, pre-fabricated, off-site solutions can now be easily achieved with the use of modern systems. Installation of cable containment in building services applications can now be a much quicker and simpler process that speeds up project completion and delivers bottom line savings.

To watch a video showing the time savings that can be achieved using the Gripple Fast Trak system, go to: www.rdr.link/eh120

PRODUCTS & BUSINESS SOLUTIONS

SAFETY FIRST Following the launch of its new ProtecWork range, Peter Dumigan, Managing Director of the Hultafors Group UK, talks to PE about the importance of Protective Wear for electricians. mployers have a legal responsibility to ensure that staff have the right level of protection and training against risks on-site. However, employees have a personal responsibility to be aware of risks and potential injuries, and to ensure adequate protection for themselves, their safety and wellbeing.

What does this mean for electricians’ workwear? Depending on the task to be performed, PPE for electricians generally includes safety glasses, face shields, hard hats, safety shoes, insulating (rubber) gloves and flame-resistant clothing. In terms of clothing, there’s a big difference between conventional Workwear and specialist Protective Wear. Over the years, workwear has evolved to make your working day more comfortable and efficient, with built-in functionality for tools and fixings, as well as protection against cold, rain and the effects of warm weather. Protective Wear has been designed and developed to protect the wearer from serious risks such as heat, flames, electric arcs and hazardous chemicals. In effect, clothing that can mean the difference between life and death for the wearer.

What are the different risk environments? In order to meet the protective requirements for a specific risk area, protective wear is divided into three categories. The higher the category number, the higher the level of protection: Category I covers exposure to minimal risks. For this category, there are CE (European Conformity) standards such as EN 343 (rain protection) and EN 14058 (cold protection). Category II includes exposure to medium risks, for instance EN 20471 for high visibility clothing. Category III covers exposure to serious risk, which include major hazards like electric arcs and molten metal splashes or liquid chemicals. What protection do electricians need? Never assume that a Category I garment will protect you against the more serious hazards and risks defined in Category III. It won’t, and you will be putting yourself at serious risk if you think it will. This means you have to understand the hazards and risks of a specific working environment, or knowing the risk level, before you start work so you can wear appropriate clothing and PPE accessories. That risk assessment, and therefore the determination of the ‘calorie’ levels required in the clothing needed, has to be carried out by the

PRODUCTS & BUSINESS SOLUTIONS

company buying the clothing. Importantly, each working situation will have its own required minimum protection, depending on the risk situation. How do I know the protection level of my outfit? It all starts with having working clothes with the appropriate CE mark for the specific risk environment. In work locations that involve a risk of electric arcing, you must also ensure your clothing offers a level of protection that corresponds to the risk level – Category III. To do this, you add up the total number of ‘Calories’ of all the layers of your outfit. Also, it’s important to remember that high-risk environments require that all the clothes you wear, including underwear and base layers, provide protection against heat and flames. For instance, using Snickers Workwear’s ProtecWork clothing, a typical set of garments that could be worn in an electric arc risk environment would be: ●

●

Baselayer – 2462 long sleeve turtle-neck shirt and a pair of 9468 wool long johns. Midlayer – 2660 long sleeve polo shirt and a 2862 hoodie. Toplayer – 1260 Softshell jacket CL3 with a pair of 6362 work trousers, plus a 9068 beanie, a 9069 multi-purpose neck/head warmer and 9262 wool socks.

What is a ‘Calorie’ in the context of PPE? In PPE terms, ‘Calories’ are used to define the protection level of a fabric, an item of clothing or the system of materials/garments. When an electric arc is triggered, different types of energy and risk factors are created, such as arc power, arc energy and incident energy, all of which are measured in ‘Calories’. This is why calories per square centimetre (cal/cm2) has become the unit used to measure the level of protection of a fabric/garment. What sort of electric arc risks do electricians have to deal with? Arcs due to electrical faults can cause severe injuries and damage, such as

thermal injury, serious burns, electric shock, noise, UV emissions, pressure and shrapnel, as well as toxic exposure and the impact of physical and mental shock. What sort of burn injuries can occur? A burn to the skin or other tissue can be caused by heat or hot substances in a solid, liquid or gaseous state. Burns are classified into four types: A first-degree burn results in damage to the epidermis (outermost layer of the skin). This normally heals in a couple of days. A second-degree burn damages the dermis (thick layer of living tissue below the epidermis). This usually causes skin blisters and major inflammation. A third-degree burn causes total damage to skin/tissue and is characterised by hard, white skin resembling parchment. In a full-thickness skin injury, sensory receptors in the tissue are damaged, meaning no pain will be felt in the damaged area. A fourth-degree burn extends through the entire skin into underlying fat, muscle and bone and, as a result, the skin is black and charred with dead tissue. The injury area is defined as the TBSA (Total Burn Surface Area) percentage, which expresses the size of the burn as a percentage of total body area. For instance, an arm is approximately 9% and a leg is 18%. How can you increase your chances of avoiding injury? Based on independent tests and reports, coupled with our years of experience, we recommend that you never wear garments that offer total protection of less than 11 cal/cm2 if you’re going to work in or near a high-risk environment. This calorie level doesn’t provide total protection, but should be seen as a minimum level. Different jobs require

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different levels of protection. Be sure you know the risk level before you enter a specific risk environment, and wear appropriate clothing. How can you ensure you’re better protected? One of the best ways is to wear layers (base-, mid- and top-layers). A fundamental requirement is, of course, that all the garments are certified and flame retardant. The main benefit of wearing layers is that the air gap formed between different garments provides increased protection. We have conducted a number of tests that show the air gap increases protection by more than 5 cal/cm2. The calorie level of the extra protection depends on a variety of factors, such as fabric structure, thickness and construction – for a precise value, combined tests on each layer must be performed. What we know for certain is that wearing multiple layers improves the protection rating. Therefore, it’s best to think of the air gap between each layer as extra protection that improves your chances of avoiding burns in the event of an accident. To download a copy of the Snickers ProtecWork catalogue, go to: www.rdr.link/eh121

PRODUCTS & BUSINESS SOLUTIONS

IR INSPECTION: PRAISE THE ‘FORD’ hen using an IR thermography camera for electrical inspection and data capture, accuracy is key. Whether the camera operator is an experienced thermographer, or new to the technology, an important acronym to remember is ‘FORD’ – FOcus, Range and Distance. Modern thermal imaging cameras are really smart but that doesn’t mean they can compensate for every miscalculation. Focus, range and distance are critical because

none can be adjusted or corrected once a thermal image has been saved. To ensure images are meaningful and suitable for further analysis, the camera must be in focus, images must be taken in the correct temperature range and at an appropriate distance from the target. Just like with any camera, whether digital or thermal, it must be optically focused before an image is captured. A blurry image isn’t just unprofessional, it also produces inaccurate temperature measurements. Good focus = better measurement, it’s that simple!

In focus thermal image

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Out of focus thermal image

Andrew Baker, Sales Director North Europe at FLIR Systems, explains why remembering four simple letters can help to improve your infrared inspection technique.

The temperature of the object to be measured must be within the range setting chosen. While many infrared

Correct range – note correct temperature & lack of saturation

Out of range – note the asterisk symbol, estimating temp value & value not guaranteed to be within spec

Always ensure appropriate distance – these images shows 1.5 metres would be correct

“When measuring temperature, a good rule of thumb is to completely fill the spot circle on the measurement tool to ensure the camera is at the right distance to get the most accurate reading.” cameras are able to detect and measure target temperature from -20°C to 1,500°C, they can’t do so within the temperature limits of a single image. Most camera models break up the total temperature measurement specification into a number of defined temperature ranges covering intervals of temperatures that the detector is able to see and image without going into saturation. When an image is saved, all the data within a particular range is captured. Any temperature points which fall outside of that range, however, are not. So, being in the right temperature range before the image is saved is critical. This is all about resolution, the ability to resolve areas of thermal detail on an object, but also capture enough information to measure temperatures accurately. An infrared image is made up of pixels, individual detectors that sense infrared radiation. All infrared cameras have limits to what they can resolve of a given sized target at a given distance. Resolution is a function of the number of detectors in the camera and the size, or Field of View (FOV), of the lens. So, it’s essential the camera operator gets close enough to put as many detectors on target as possible to ensure the best resolution of the object. When measuring temperature, a good rule of thumb is to completely fill the spot circle on the measurement tool to ensure the camera is at the right distance to get the most accurate reading. If the operator is struggling to fill the spot circle, even though he or she has moved as close and as safely to the target as possible, then switching to a telephoto lens (if available) is another option for better accuracy. Continuous development of infrared cameras for electrical inspection has made the technology eminently affordable, easy to use and flexible to apply. Nevertheless, understanding the science behind thermal imaging is essential to its successful application, so basic training should always be considered with every camera purchase. The FLIR Infrared Training Centre (ITC) runs free webinar content, aimed at helping end users to improve their IR inspection process. To view future webinar dates and register your interest, go to: www.rdr.link/eh122

PRODUCTS & BUSINESS SOLUTIONS

THE INCREDIBLE BULKHEAD Alexey Terebenin, Director at Mark Lighting, looks at why bulkheads are the ‘workhorse’ of LEDs.

ince they use less energy, LED bulkheads generally cost less to run than other types of light. Designed for practical use, there are various types of bulkheads available to suit different applications.

Enlightened exteriors Bulkheads are a practical and economical way of lighting outdoor spaces. Wall-mounted bulkheads are perfect for illuminating doorways, paths and garages; they are functional, with an emphasis on energy efficiency and durability. The Mark Lighting LED oval bulkhead is

an IP65-rated luminaire, meaning it provides a high level of protection against water and dust. This makes it ideal for exterior applications as it can withstand difficult weather conditions. The oval bulkhead is 12W and provides 1,050 lumens. It is available in 4,000K – a cool white colour that is useful for task lighting. The look of the light fitting can be altered to suit the aesthetics of the space – it includes three interchangeable covers at no extra cost. This includes: oval black, small oval white, and a black cover that creates an up/down light. A water-resistant solution Durable and energy efficient, our standard round LED bulkhead is one of our best-selling products. Its IP54 rating means it is water-resistant, making it ideal for bathrooms, cloakrooms or kitchens. It can be mounted on the wall or ceiling. The round bulkhead is 14W, provides 1,000 lumens and is available in 4,000K or 6,500K.

Bulkhead LEDs used for commercial and industrial applications are often required to meet specific needs, such as motion detectors and emergency lighting. A model for every application In addition to the standard option, the round LED bulkhead is available in three other models: maintained emergency, microwave sensor, and a combined microwave and emergency option. The emergency model has a battery pack that provides three hours of emergency operation in case of a power cut – ideal for use on fire escapes. It can be mounted on the wall or ceiling. The microwave sensor model allows you to adjust the detection zone, meaning the light is only triggered when someone walks into the room or corridor. A money-saving lighting solution, this is perfect for student accommodation to ensure lights are not left on. The third model combines these two features. A small solution The Mark Lighting range also includes a small round and small oval LED bulkhead, both IP54 rated, that is smaller and narrower than its standard counterpart. These 8W options provide 560 lumens and are available in 4,000K. The lower price point makes it a particularly cost-effective lighting solution for utility rooms or sheds. For more information about Mark Lighting’s LED bulkhead range, go to: www.rdr.link/eh123

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Products IN PRACTICE

Safety at the forefront for housebuilding partnership Hager and Taylor Wimpey, one of the UK’s largest housebuilding companies, are working together to ensure safety remains the number one priority for the owners of the developers’ newly-built homes following recent electrical industry regulation changes. As a result of the introduction of the 18th Edition of the IET Wiring Regulations, all new Taylor Wimpey homes – where construction was started after January 2019 – will benefit from an ‘as standard’ installation of a surge protection device within the property’s consumer unit as an extra safety precaution. The 18th Edition regulations state that all new build properties should have surge protection unless a risk assessment is carried out by electrical contractors to look at the likelihood of lightning strikes and other geographical factors that could result in short, disruptive and excessive voltage levels. From this assessment, electrical contractors can decide if the consumer unit installation warrants the cost of including an SPD to help protect potentially expensive household technology items from damage due to an unpredictable spike in voltage. However, Taylor Wimpey has taken the strategic decision to phase in the roll out of consumer units pre-fitted with an SPD across its new build developments going forward. As well as offering complete peace-of-mind for the new property homeowner by specifying Hager’s Design 30 consumer units, electrical contractors can benefit from a straightforward and fast on-site installation process as the SPDs come pre-wired. A spokesperson for Taylor Wimpey commented: “Our long-standing relationship with Hager means we’re totally confident we’re specifying a quality, high-performing solution thanks to the Design 30 consumer unit.” For more information on Design 30 from Hager, visit: www.rdr.link/eh124

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sponsored by www.electricalcharity.org

ENERGENIE GRIDIZEN

PROTEUS SWITCHGEAR BATH ALES’ HARE BREWERY Proteus Industrial Switchgear has provided 892 solar panels, each producing 280W of power and contributing to an overall output of 250kW, for Bath Ales’ Hare Brewery in Warmley, Bath. Two years previously, Proteus had provided the brewery with two mains electrical switch boards, each with 630A MCCB incomers and 12 way MCCB bus bars. Chris Cowap, Senior Engineer and Project Manager for the installation contractors who carried out the solar panel fitting, ZLC Energy, said: “The Proteus factory was very helpful as we amended a couple of times what we needed. This reduced the amount of equipment that we finally required. They supplied a 6 way panel board complete with a 400A incomer to allow three 80kW systems to regenerate back into the old panel.” He added: “The modular nature of the existing switch gear made it simple to add on the panel for the PV, all of which we are very pleased with.” www.rdr.link/eh125

Gridizen and MiHome have partnered up on a property management concept using MiHome’s smart home technology to connect landlords to their tenants on a new property development on Lower Road, London. The Amazon Alexa-compatible MiHome smart home products were installed throughout three properties, including the MiHome smart thermostat and relay to control heating, MiHome smart sockets in the kitchens, bedrooms and living areas to manage appliances, and MiHome light switches across all rooms. Oliver Tadd, Commercial Director for Energenie, said: “This is a unique opportunity for MiHome’s smart home technology to be integrated with Gridizen’s streamlined service that connects landlords and tenants to make property management better. We at MiHome are proud to be involved in this revolutionary property management concept.” www.rdr.link/eh127

ESP THE TEA FACTORY

UNITRUNK HILTON GARDEN INN Cable management specialist Unitrunk is providing cable ladder, trunking tray and basket for a £20 million Hilton Garden Inn project in Stoke-on-Trent, as part of the mixed use Smithfield development in the Hanley area of the city. Unitrunk’s systems will be installed in the hotel’s corridors, communal areas, bar and kitchen to provide infrastructure for all power, data, low voltage and alarm system cabling. With tool-free, faster installation from both the company’s UniKlip cable tray and Easyconnect cable basket, the electrical contractors – Carter M&E – can reduce installation times by up to 50%. Rob Hope from Carter M&E commented: “Unitrunk’s RIS cable management systems are helping us to keep the installation on track and will provide a robust electrical infrastructure for this prestigious hotel brand.” www.rdr.link/eh126

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ESP has provided a security solution for The Tea Factory’s manufacturing and warehouse site in Quedgeley, Gloucestershire, after engineer Richard Green looked to replace the faulty CCTV system with the latest 4MP technology. The 30,000 sq ft premises have been specified with the HDView 4MP CCTV range. An 8 channel, full HD 1TB CCTV DVR, with four 4MP cameras in grey, were selected for their ease of installation, relatively low cost and the technical back-up available from ESP. The HDView system offers features such as motion, continuous and schedule record, with simple footage playback and back-up method of distributing essential footage. Richard Green commented: “Scott Phillimore, Area Sales Manager for ESP, did a thorough survey of the site to satisfy our requirements for both external CCTV protection as well as internal monitoring of equipment. His advice was invaluable and we were very pleased with the highly competitive cost for the HDView 4MP CCTV system.” www.rdr.link/eh128

PRODUCTS & BUSINESS SOLUTIONS

THE MISSING LINK? Reece Fitzhardy tries out the MAINSLINK-PRO two-remote switching system from RF Solutions. said, cable sizes shouldn’t be any larger than 0.75mm flexible as there is a space limitation in the boxes provided. I’ve ‘tinned’ my cables, but ‘bootlace’ crimps would likely prove more useful. Care is needed inside this box as the terminals are directly on the electronics PCB. In addition, various ‘jumper’ links are present, which can be used to configure the following:

n simple terms, the MAINSLINK-PRO is a bi-directional radio switch which replaces two ‘switched live cables’, thus removing the need to lay hard wires. This is particularly useful when situated between a boiler and the wiring centre – one of the key applications for the product. Upon opening the box, I found that the switches arrived as a paired linked system, with each switch having a mains input and switched input and output. I believe they’re arranged in this way so as to provide a remote cross-coupled mains switch. To explain this further, essentially switch ‘A’ will have input and output. The input to switch ‘A’ will then drive output from switch ‘B’, and the input to switch ‘B’ will drive output from switch ‘A’. Power is then limited by relay contacts and a 4A fuse.

So how does it work? The specific design idea for the MAINSLINK-PRO is as a remote Worcester Bosch boiler link between the timer/thermostat and boiler. However, upon further investigation, it is clear that many other applications are possible, including the control and switching of lower power LED lights. If we look at its use with a Worcester

Bosch boiler, one unit is installed next to the boiler and the other within the wiring centre. Each unit then has a ‘Live in’ and a ‘Live out’ screw terminal which use RF signals to communicate with one another. This is aided by the use of RF Solutions’ RF-LoRa spread spectrum frequency hopping transceiver, which is designed to offer a high radio link range and performance. The photo of the link unit (above) shows a fairly congested situation (I included a terminal block for this test scenario) but, in practice, the cable layout will be clearer. That

WDOG – WATCHDOG This is a regular link check between the paired units. If the WDOG signal isn’t received within 90 seconds, the output will drop out and an LED light will flash. MODE This is a delay for switching, with Mode 3 providing faster operation over a shorter range, and Mode 7 offering slower operation over a longer range. MOM/LAT – MOMENTARY OR LATCHING

CH ON

DH W ON

Application example: Worcester-Bosch Boiler Installation

PROFESSIONAL ELECTRICIAN September 2019 79

So how did it perform? I should state this product does require the user to read through and fully understand how to get the best from it, but the fact that it is supplied ready to go is a major bonus. It is also very easy to install. Although the specification for distance is a 5km range in line of sight, and 1km through buildings, mine was tested in a domestic external building environment with a 30m distance. I’m pleased to say that operation was perfect with no issues at all, and I’m now very much looking forward to trying the product out on other applications in the future.

Permanent LIVE FEED N N L

L in Comm L o ut

WDOG MODE

MOM/LAT

SWITCHED LIVE

To watch a handy demonstration video of the MAINSLINK-PRO from RF Solutions, go to: www.rdr.link/eh129

MAG Switch

with this. Furthermore, erasing and pairing units up again is also a very simple process.

Lin (LIVE IN)

This sets the relay changeover contacts to operate as ‘Momentary’ or ‘Latching’. These options are all very useful to the user, and I really like the Watchdog concept as it can quickly draw your attention to any communication issues. The only drawback of this monitoring system is that it can’t be viewed from the front of the unit, so the unit will require removal for you to check any status LEDs. After discussing this with the manufacturer, they’ve advised that they’re in the process of upgrading the product with a new enclosure so the LEDs can be seen through the front of the unit, as well as providing extra space for the wiring. This will be released later in the year. Additionally, the PCB inside is always live, so means of local isolation (either plugs or switched spur) need to be provided. For more advanced use, it’s incredibly easy to pair two MAINSLINK-PRO units, and a supporting instructional PDF will help you

Lout (LIVE OUT)

PRODUCTS & BUSINESS SOLUTIONS

PERMANANT SUPPLY

PRODUCTS & BUSINESS SOLUTIONS

WIRE YOU WAITING? Ronny Wendlandt of RW Electrical Installation gets to grips with the Fast-Coupling wire basket system from Marshall-Tufflex. e’ve all taken that call before: a client requiring an installation or modification within an industrial or commercial space which, upon an in-person visit to the actual site, presents a much bigger challenge than the one you had originally imagined. If you’re like me, the first questions you’ll be asking are ‘where do I start?’, ‘what do I use?’, ‘how many cables are required?’ and,

most importantly, ‘how can I make the job look both professional and tidy?’ In many cases, cable tray or wire basket will be the solution that I will turn to for my cable containment requirements, so I was very grateful to Marshall-Tufflex for supplying me with some of its Fast-Coupling Wire Basket for use on a recent job. One of the things that attracted me to the product originally was the claims of how easy it is to fit and connect, as previous products I’ve worked with have proved very

time-consuming, costing us valuable time on-site. No such problems here though, as the Fast-Coupling system was straightforward to use, while offering a strong, rugged and lightweight solution. For my installation I used 200mm x 65mm basket for the main horizontal runs, as well as 100mm x 65mm and 60mm x 60mm for the vertical runs, which support a variety of lengths and weights of SWA cabling. Because of the new Fast-Coupling system, I was able to easily

PRODUCTS & BUSINESS SOLUTIONS

and effortlessly join the various lengths together with no issues. One of the great features of this is that you don’t require any tools as the push-fit couplers are integral to the wire basket system. For this particular job, we installed the wire basket on a strut system, secured with the spring clip or via the support plate. Although straight runs don’t often pose too many problems, it’s the times when the installation needs to go around corners that can prove troublesome for electricians. The Fast-Coupling system makes simple work of this particular task, with the process of joining large baskets to smaller baskets made infinitely easier through the use of various accessories, such as basket connector brackets, bend connector bolts and multi-union joints. Marshall-Tufflex’s nicely laid out catalogue also provides further guidance and instructions on this.

The Fast-Coupling wire basket is presented in a 3m length and, using the cutting tool provided from the accessories section, you can make easy work of cutting the basket to the required length. I found this to be a very useful tool as it provides a nice clean cut with no excessive mess. Again, a handy guide is provided within the catalogue which offers detailed information on how and where to cut. Another nice touch within the system is the use of safety edges, which help to prevent any personal injury to the user as well as potential cable damage. I was also impressed at how flexible the product proved to be, without compromising on its overall strength. It’s safe to say that having had the chance to fit the Marshall-Tufflex Fast-Coupling wire basket system on a real-life job, my opinion of the product is a

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very positive one. Clearly a lot of thought and time has gone into producing a solution that has been designed with end-user installers in mind, offering quick installation with minimal effort and worry. Once fitted, it offers a safe, strong and rigid containment solution, supported by a tranche of accessories, guides and diagrams to further help you with its use. Overall, I’d not think twice about using the Fast-Coupling system on future jobs and would recommend that other installers do the same. When I also factor in the excellent customer service on offer from Marshall-Tufflex throughout the whole process, it has to be a 10 out of 10 from me! For more information about the Fast-Coupling wire basket system from Marshall-Tufflex, go to: www.rdr.link/eh130

PRODUCTS & BUSINESS SOLUTIONS

GO WITH THE PRO For this review, Len Lilley puts the MFT-Pro multifunction tester from Test Instrument Solutions through its paces. What attracted you to the MFT-Pro in the first place? Although I’ve been using a different brand of MFT for the past few years, I’d previously purchased a number of units from the TIS offering and have found them to be very robust, reliable and easy to use. I was, therefore, keen to see if this latest unit lived up to its billing and to try out a number of the exciting functions it offers, including phase-to-phase loop testing. What were your first impressions of the unit? The kit arrived in a solid, robust case which keeps the unit nicely protected inside and safe from those bumps and bangs that products can be prone to on-site. A number of useful accessories can also be found inside the case and, once opened, it’s a great looking piece of kit which is a good size and benefits from a large, bright TFT colour LCD display. Was the product easy to get to grips with and use? I was very fortunate to have a member of the TIS team visit me to run through how to use the tool and get the most from its full range of capabilities, so getting started was very simple. Included in the case, however, is a useful ‘how to use’ guide, and this contains everything that new users will need to know. ‘Help’ screens are available to show the user how each test should be performed but, as is befitting of modern-day MFT technology, the software is so intuitive that, once you’ve got to grip with the various functions, the tool will do most of the work for you anyway.

In use, I found the unit to be very comfortable and easy to handle, yet strong and robust at the same time. The touchscreen is a brilliant feature and I felt it was much more responsive than alternatives that I’ve tried in the past. I also love the fact that it comes with a stand, and even received a compliment from a customer who commented about how great the kit looked. One other difference that I noticed from other units I’ve used before is the way that the MFT-Pro ‘sat’ on me when in use. This is thanks to the neck and body strap that come with the tool, allowing me to position the MFT in the perfect position (for me) whenever I was testing.

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PRODUCTS & BUSINESS SOLUTIONS

What tasks has the unit been particularly useful for? I’ve had some great use from the tool since the start of the trial, putting it into practice when undertaking general tasks, like replacing consumer units, as well as a whole array of other jobs that require electrical tests to be performed. It has yet to be found wanting on any of the occasions that I’ve reached for it… Are there any features/benefits of the tool that you particularly liked? One of the things that impressed me most was the long list of additional testing facilities that the MFT-Pro can provide, some of which I’ve not seen on other testers. This list is extensive, but includes things like phase-to-phase loop testing and power quality analysis. I’m also a big fan of the long test leads that come with the unit, which are

especially useful when you’re trying to access items that might be in hard-to-reach locations. It also features a PC interface that can be used with Wi-Fi, providing you with the ability to store any data you’ve collected while you’re testing. Would you recommend the tool to other electricians? I’m not usually one to make sweeping statements unnecessarily, but I’m honestly hard-pushed to come up with any improvements that I’d make to this tool. On every occasion that I’ve used it, it has come up trumps, and I’ve found the touch screen technology and screen layout to be an excellent additional aid. The MFT-Pro ticks all of the boxes that you’d want from a modern multifunction tester and is a product that I’d highly recommend to other electricians.

To view a promotional video, offering more details and information about the TIS MFT-Pro, go to: www.rdr.link/eh131

Products round up

MEGGER DCM305E Earth Leakage Clampmeter

SNICKERS WORKWEAR Loose-Fit Stretch Trousers Snickers Workwear has expanded its AllroundWork offering with the addition of Loose-fit Stretch Trousers. The trousers ensure maximum mobility whilst on-site, and the range is available throughout the UK. The work trousers for men have a loose fit for a classic Snickers Workwear look and feel, with stretch Cordura for increased durability, as well as improved ventilation and close quarter mobility. The slim-fit work trousers for women are specifically designed for the female body, including wider hips and a narrower waist, to ensure optimal comfort and freedom of movement. www.rdr.link/eh132

When investigating nuisance tripping, the DCM305E from Megger allows earth leakage currents to be measured quickly, accurately and safely, since no physical connection to the circuit under test is needed. The measurements show immediately whether the problem is an overly sensitive protective device (RCD or RCBO), or an issue related to excessive earth leakage current caused, for example, by cable deterioration. As a further aid to fast and convenient operation, a valuable compare function is provided, which has three preset leakage limits: 0.25, 0.50 and 3.5 mA. When this function is enabled, the instrument gives a visual indication and an audible warning when the preset limit is exceeded. To facilitate its use in wider applications, the DCM305E offers six current ranges, with a choice of auto-ranging or manual range selection. Auto hold, data hold and peak hold functions are available on all ranges. These functions are particularly useful when performing measurements in locations where access is limited. www.rdr.link/eh133

XCITE Wallpack Resistant to damage from water and dust ingress, the all-new xcite Wallpack is the ideal bulkhead for external environments. Its IP65-rated polycarbonate body and diffuser afford it plenty of protection against the elements, making it the right luminaire for exterior spaces. The 70 lm/W efficacy means that the xcite Wallpack is suitable for the replacement of traditional light sources, delivering significant energy savings. Additional savings can be further enhanced with a range of lighting control options, designed to reduce the usage time of the product, and so reduce the energy consumption. The photocell option allows for daylight control, switching from dusk to dawn automatically; whilst the microwave movement sensor option only illuminates the space when required for further energy savings. The three-hour emergency variant makes the Wallpack suitable for building entrances, ensuring that occupants can safely evacuate to an outdoor location. www.rdr.link/eh134

M2 ELECTRICAL Combined AFDD & RCBO M2 Electrical has developed and launched a combined AFDD/RCBO device. Following on from the success of its compact RCBO launched over six years ago, the addition of the AFDD module was a natural progression and boasts the added feature of being able to fit M2â&#x20AC;&#x2122;s existing bus bar system, with no modification or additional components necessary. The M2-AFR range offers complete circuit protection, detecting Overload, Short Circuit, Earth Leakage and Arc Faults in final AC circuits. Available as a 6kA, 30mA, B curve device with Type A earth leakage characteristics, the M2-AFR device is now an integral part of the range and one that every installer needs to be aware of. The M2-AFR device also features a self-test facility plus an LED status indicator on the front of the device which highlights whether a series, parallel, over-voltage or self-test fault has been identified following a trip event. www.rdr.link/eh135 PROFESSIONAL ELECTRICIAN September 2019 91

Products round up

MARTINDALE ELECTRIC HPAT Series Testers The HPAT Series of portable appliance testers from Martindale Electric now includes the HPAT400 and new updates to its existing range, designed to perform safety checks in accordance with the IEE Code of Practice. The HPAT400 is a battery-powered PAT tester suitable for Class I and Class II appliances, and it incorporates large PASS/FAIL indicators and simple connection instructions on the tester. For applications which require combining simple PASS/FAIL with actual test values, the HPAT500 is ideal and now features a low insulation test voltage, making it suitable for testing surge protected devices. Also available in the range is the HPAT600 which includes both automatic one button testing (like the HPAT400 and HPAT500), and single test selection for diagnostics. www.rdr.link/eh136

CED Meridian LED ZFL Floodlights Expanding its Meridian brand, CED has introduced a range of LED Industrial Floodlights. The Meridian ZFL Floodlight range includes 10, 20, 30 and 50W sizes. It’s available either with standard switch start activation and an IP65 rating or with PIR operation and an IP44 rating. The floodlights have a diecast aluminium body, are fitted with SMD chips, deliver a 6500K/daylight colour rendition, a 120° beam angle and up to 4,500 lumens (in the 50W version). They’re also finished in black and designed for wall mounting. www.rdr.link/eh137

UNILITE Hexatec Work Light Range The Hexatec range from Unilite consists of three industrially tough hexagon-shaped work lights that are built to excel in an installer’s environment. The range has been constructed from a blend of super tough aluminium and hardened rubber, which collaborate to give the range superior protection, confirming its IP65 dust and water resistance and IK07 shock resistance. The light output is, of course, strong across the range. The SLR-1300 has a 1,300 Lumen output, the SLR-2500 has a 2,500 Lumen output and the largest unit, the SLR-4750, has a 4,750 Lumen output. These all provide a wide spread of beam thanks to their COB LED, making them perfect for any task. All three of the lights are rechargeable via varying Li-ion batteries. These deliver a strong performance, whilst not burdening the lights with too much excess weight. www.rdr.link/eh138 92 September 2019 PROFESSIONAL ELECTRICIAN

BOSCH Random Orbital Sanders Bosch has expanded its range with two new direct driven random orbit sanders – the GET 55- 25 Professional and GET 75-150 Professional. Both tools are equipped with a powerful 550 or 750W motor, meaning they can achieve a fast removal rate with a high surface quality. Additionally, with just one click, tradespeople can change from fine sanding to coarse sanding or polishing with the direct driven function, achieving three times faster material removal. The GET 55-125 Professional and GET 75-150 Professional are operated flexibly and comfortably in every application and position thanks to the ergonomically shaped palm rest with soft grip and narrow handle. If smaller, convex or concave surfaces have to be processed, the GET 55-125 Professional is recommended with a sanding pad diameter of 125mm. The GET 75-150 Professional, with a 150mm pad, is particularly suitable for larger surfaces. Both tools have a six-stage speed pre-selection and are designed for processing different surfaces. www.rdr.link/eh139

The ideal EV wall charger for both domestic and commercial The UK Government’s ‘Road To Zero’ plan aims ‘for at least 50% and as many as 70% of new car sales to be ultra low emission by 2030’. To reach this goal, a raft of measures are being rolled out to support the development of the requisite charging infrastructure. Garo Electric has been expanding its EV charging range in line with this surging activity, supporting sometimes complex charging requirements. The latest wall mounted charger model – GLB Plus – is a smart, robust, high-end option for a variety of locations, including domestic installations, businesses, shopping centres and hotels. Features include smart metering, back-end connectivity (with OCPP protocol) allowing the user to manage billing and maintenance, LAN, 4G & 3G. Dynamic Load Balancing minimises the risk of overloading the main fuse and DC leakage protection is in accordance with international standards (IEC 60264-7-722). All Garo EV chargers are approved for OLEV Grants and come with a three-year warranty for peace of mind. Another key advantage with Garo charging stations is the ability to demonstrate a company’s green credentials through branding. Each unit can be branded with a company logo and colour scheme to suit their identity, which is a powerful way to communicate a company’s environmental policy at the entrance point for visitors – the car park. Over the last year, Garo has completed installations across a number of high profile organisations and facilities including: Facebook, Musgraves, Abbott, Eli-Lilly, universities, County Council offices, shopping centres, and many more. www.rdr.link/eh140

Products round up

BLE LIGHTING & POWER Pro-Em Controller & BLE Luminaires BLE Lighting and Power has announced a partnership with Silux Control to integrate selected BLE luminaires with the Silux Pro-EM Controller into a dual-branded system. The Pro-EM Controller is a wireless, RF encrypted communication device with mesh connectivity, suitable for any size installation or building. It has a built-in battery to last a minimum of three hours in emergency function and provides compliance with statutory and mandatory requirements without human intervention. Weekly, monthly, bi-annual and annual tests are available with the Pro-EM IntelliHub, along with date/time options and the ability to print hard-copy reports. BLE Lighting and Power will also be distributing the Pro-EM Controller units to buy individually, which can be used to convert standard luminaires into an emergency fitting. www.rdr.link/eh141

LIGHTWAVE RF L82 Mini Relay Lightwave’s upcoming range of smart relays are immensely flexible, range-completing devices that provide a number of clever solutions. The L82 Mini Relay – claimed to be the most versatile Lightwave device to-date – can be added to any electrical circuit (up to 500W) and is controlled wirelessly from a Lightwave Smart Dimmer. The product can allow users to operate curtains, blinds, front gates, garage doors or large lighting circuits, providing a perfect solution for heavy loads (high wattage circuits) or where the end user wants to create zoned lighting for large rooms. The unit replaces the previous relay (LW821) in the range, with a host of additional features. www.rdr.link/eh142

ARMEG 14 Pc Twister Drill-Drive Set Extending its available range, Armeg has launched the 14-Piece Twister Drill-Drive Set. It features 6 x 50mm screwdriver bits, and each bit has a strong magnetic collar which firmly locks onto the fastener. Thanks to the Mag-Grab technology, the Mag-Bits allow for convenient and flexible screw driving in awkward situations, such as overhead use or in tight spaces. Also included in the set are the Twister Multi Material Drill Bits, for use in sheet metal, timber, soft brick and lightweight block, and the HSS Cobalt Drill Bits, for use in stainless steel, cast iron, brass and more. All contents in the set are impact rated for use in impact drivers – perfect for the convenience of one-handed drilling. www.rdr.link/eh143

TIMEGUARD PIR Presence Detectors Timeguard has updated its range of PIR Presence Detectors with the SLW360N and SLFM360N (flush mount). They offer a 360° area of detection, with a detection range of up to 8m for motion and 4m for presence detection at a 3m mounting height. They are also IP44 rated, with adjustable time settings between 3 seconds and 18 minutes, and lux levels between 1 and 1,000. The ceiling and surface-mount models are rated and tested to switch between 2,000W halogen, 500W fluorescent, 250W LED and 75W fan. The flush mount version comes with a 75mm diameter ceiling cut-out. www.rdr.link/eh144

Products round up

New specifier tool takes the hassle out of tendering Schneider Electric has launched a new specification tool for M&E consulting engineers. The free online tool aims to make the process of generating specification for tenders quicker, simpler and much easier, providing an intuitive platform for users to create and store their specifications, and instantly access all the information they need on solutions and digital architectures. When a company embarks on an ambitious new project – such as the construction of an office building – they will issue a design scope, inviting consultants to propose and design the building’s electrical and mechanical infrastructure. Submissions must be detailed, outlining everything from the building’s energy management system through to individual circuit breakers. The process is difficult and time-consuming, and often fails to secure new business for the consultant. In a highly competitive market where speed is critical, this is time consultant engineers cannot afford to waste. Schneider Electric’s specification tool enables consultants to create tender blueprints quickly and easily. Available through the company’s Specifier/Consultant mySchnieder Partner Portal, the platform allows users to create specifications from scratch or pre-existing templates. The platform provides simple functionality, letting specifiers take product information from a vast library of industry solutions and quickly drop it into their tender templates. Product, standards and solution documentation is constantly updated, giving users one easy place for the most up-to-date information on all current design needs. For complex designs or less-experienced consultants, the tool also offers customisable templates pre-made for common customer architectures. These include frameworks for complex buildings such as large and critical ones. Users can save ‘in-progress’ specifications and easily share them with colleagues in-platform. Once a specification is complete, it can be downloaded straight from the tool and in a plain text format that makes it easy for consultants to tweak for their own tender templates. For further details and to access the tool, go to: www.rdr.link/eh145

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TANSUN Monaco & Monaco XL The Monaco heater from Tansun is available in single, double or triple appliances, offering a variety of heated power to suit all balconies. The heater should ideally be wall-mounted or, alternatively, hung from the ceiling. It can cover an area of up to 36m2 and can be accessorised with Tansun’s remote controller or presence detector (PIR). The Monaco XL Series has been developed to heat larger spaces where the mounting of multiple large heaters is an issue. The range includes single, double and triple configurations of up to 7.2kW and boasts an IP55 rating, so it’s rainproof and suitable for year-round usage. Tansun’s infrared heaters are 50% more efficient than other heating technologies, are maintenance-free and silent. www.rdr.link/eh146

VARILIGHT V-Pro LED Dimmers Varilight has expanded its grid dimmer range with the introduction of grid adapter packs, making Varilight grid dimmers compatible with eight leading grid systems. These include: Varilight PowerGrid, MK, Crabtree, Schneider Lisse, Schneider Ultimate, Deta, Hager, and BG. Coming in white or black, packs of ten grid adapters for each system are available to adapt standard Varilight PowerGrid V-Pro dimmer modules to the installer’s system of choice. Alternatively, multi-grid packs are also available with one of each adapter included. V-Pro grid dimmers are available in two ratings: 0-120W (max. 10 lamps) and 0-300W (max. 20 lamps). Furthermore, there is no need to de-rate for LED or associated in-rush currents. www.rdr.link/eh147

Products round up

SAXBY LIGHTING Regen Flexible Strip Light The Regen is an IP65-rated, warm white LED flexible strip light, which is easy to install due to its self-adhesive backing. It has a colour temperature of 3,000K and provides 5,000 lumens. The range is energy efficient, but offers a high lumen output, making it an adaptable and flexible solution, suitable for use indoors or out. It is available in cool white and accessories are sold separately. It requires an LED driver and measures 5,000mm x 10mm. www.rdr.link/eh148

LITHE AUDIO Bluetooth Ceiling Speakers The Lithe Audio Bluetooth speaker ‘pair’ are wireless via Bluetooth (the ‘Master’ speaker is Bluetooth and the ‘Slave’ is connected to the Master via speaker cable) so you can connect via your smartphone, tablet, TV or PC. These models have a volume-capping feature which enables whoever is controlling the speakers to reduce the volume output by 50%. For a multi-room solution, you can offer the Lithe Audio WiFi speakers. They can stream from any WiFi-enabled audio service to a single, a selection or up to 30 speakers at once for a full multi-room audio experience. The App will save settings for individual zones or to play Party Mode (all speakers at once) for future streaming. The WiFi ceiling speakers are also available in an IP44-rated bathroom version. www.rdr.link/eh149

ETERNA LIGHTING Self-Test Emergency Batten Eterna Lighting has expanded its range of LED Battens with the launch of the Self-Test Emergency Batten. It’s the combination of a Self-Test Emergency Downlight and an LED Batten. Under the EternaPro offer, there is currently a choice of 4ft, 5ft and 6ft LED standard battens, with High Output LED battens available in 5ft and 6ft versions. The Self-Test system requires no additional installation by the contractor and, for the Building Manager, it removes the need for manually testing, saving time and money. Self-Test Emergency LED Battens from the EternaPro range come with a five-year warranty from installation. www.rdr.link/eh150

FINDER Bliss Range The Finder BLISS Range includes a thermostat and a Wi-Fi chronothermostat. You can control BLISS manually or via the Finder App (available on iOS and Android) to regulate the temperature for your home. The Autoway function allows for the setting of lower temperatures when the house is unoccupied. Autoway utilises the smartphone GPS function, activating when the last registered user leaves the property, ultimately saving energy. The versatile device offers a weekly operating program, allowing you to set the desired temperature for any time, day or night. You can manage a number of devices in the same property simultaneously via the App, as well as managing different locations, such as a main residence or a holiday home. www.rdr.link/eh151

Products round up

DANLERS Microwave Switches DANLERS has launched a new range of cost-effective mid-range microwave presence detection switches for the automatic control of lighting and ventilation. The products detect movement within the detection area and control the load accordingly. Each product is suitable for switching most lighting loads, including LED, and has a detection range of up to 12m. MWCEFL is suitable for flush mounting into false or plasterboard ceilings, and has a snap-fit cover to allow for easy adjustment of time lag and lux level functions. Its slim profile is visually unobtrusive, making it suitable for corridors, offices, washrooms, etc. MW6A2C IP67 and MW2A IP67 are IP67 rated and suitable for surface mounting on walls or ceilings. With an operating temperature range of -30ºC to 70ºC, these controls may be suitable for cold storage facilities as well as factories, warehouses, etc. www.rdr.link/eh152

C.K TOOLS Cable & Wire Stripping Tools C.K has launched a range of Cable and Wire Stripping Tools, designed to cover a wide range of applications. Included in the product range is the Automatic Wire Stripper (T1261) which is designed for stripping solid and stranded wires from 0.2 to 6mm2 (24-10 AWG). The Automatic Cable & Wire Stripper (T1260) is designed for stripping flat cables up to 12mm in width, and the Universal Cable Stripper (T1270) provides precise stripping of all common round cables with 8 to 15mmØ. It also has two stripping notches with length stop for stripping conductors – suitable for stripping wires of 1.5 and 2.5mm2 (16 & 14 AWG). The Coax Cable Stripper (T1271) is suitable for stripping cables of 4.8 to 7.5mmØ, as well as stripping 3-core flex. Finally, the Cable Stripper (T1280) can cut both around and along cable sheathing. www.rdr.link/eh153

MEGAMAN Dino 2 Farm LED Battens Megaman has released its latest generation of Dino LED battens, including Dino 2 Farm. The IP66 and IK04-rated luminaires feature a chemical resistant body designed to withstand harsh locations and areas that have high levels of ammonia-containing gases. Ideal for farm locations such as pigsties and cowsheds, Dino 2 Farm is an efficient replacement for indoor and outdoor linear fluorescent T5 and T8 sealed battens. Available with an opal diffuser and a colour temperature of 4,000K, Dino 2 Farm battens are available in 4ft and 5ft lengths. The fixtures also come in 35W and 53W variants to provide between 4,300 lumens and 6,500 lumens, which are comparable to the lumen outputs achieved from traditional twin tube fittings. The battens have a lamp life of 50,000 hours at L80 and efficacies of up to 123 lumens per watt, as well as a five-year warranty. www.rdr.link/eh154 100 September 2019 PROFESSIONAL ELECTRICIAN

SOLID GEAR Onyx Safety Shoes & Boots Available as either a shoe or a boot, and ideal for different types of on-site work, Solid Gear has introduced Onyx. This EN-accredited footwear integrates a seamless upper and Cordura reinforcements with a poured polyeurethane midsole, a breathable footbed and strong rubber outsole for maximum grip on slippery and uneven surfaces. Metal-free protection comes from the fibreglass toecap and penetration board for extra personal safety. Furthermore, the BOA Closure System – used on many top-brand sports shoes – distributes the pressure of the fastened shoe evenly across your feet to ensure a glove-like fit all day for maximum comfortable protection. www.rdr.link/eh155

GIRA Matt Black System 55

Gira has announced that System 55 â&#x20AC;&#x201C; a modular system for intelligent building technology â&#x20AC;&#x201C; is now available in cutting-edge Black Matt. This new and exclusive colour variant for Gira System 55 is made possible through the sleek Gira E2 Design Line, a comprehensive range of complementary sockets, switches, outlets and accessories that can not only turn lights on and off, but also raises and lowers blinds each day via a standard blind control button. Additionally, it offers a contactless switch with integrated LED orientation that illuminates when motion is detected. Already available in stainless steel, pure white glossy, pure white matt, painted aluminium and anthracite, you can now specify in Black Matt, where its lacquer finish will guarantee consistent results. www.rdr.link/eh156

NIGHTSEARCHER Galaxy 1200 LED Worklight The newest addition to the Nightsearcher worklight range, the Galaxy 1200 is a powerful rechargeable LED worklight with a bright 1,200 lumen light output. Made from durable, lightweight ABS plastic with edge protection, the Galaxy 1200 weighs under 500g, making it both compact and portable. The unit also boasts a handy power bank feature for charging your phone. www.rdr.link/eh157

Products round up

HIKOKI POWER TOOLS 36V Slide Compound Mitre Saws HiKOKI Power Tools has introduced the cordless C3607DRA 36V slide compound mitre saw (185mm blade) and the C3610DRA 36V slide compound mitre saw (255mm blade). To ensure the highest levels of accuracy and safety, both saws have a laser guide system and LED worklights. The C3607DRA model allows the user to make bevel cuts up to 45° left and right and mitre cuts up to 45° left and 57°. It can be used in tight spaces, and it can make up to 320 cuts per charge. The C3610DRA model has a fast cutting speed, with up to 374 cuts per charge. Bevel cuts can be made up to 55° left and 60°, and mitre cuts up to 48° left and right. Both models come with two BSL36B18 4.0Ah/8.0Ah Multi Volt batteries and charger. www.rdr.link/eh158

LEDVANCE LED Strips & Accessories Range LEDVANCE has introduced three different categories of LED strips: Superior, Performance and Value. They are available in a large number of colour temperatures ranging from energising, daylight white 6,500K to warm white 2,700K, and lumen packages from 300 to 2,000 lumens per meter. The LED strips are suitable for virtually any lighting task, including classic general lighting, ambient lighting and indirect lighting of niches and coves. All LED strips are pre-wired on both sides and are easy to shorten if necessary. They also come as protected and unprotected versions, i.e. with or without a silicone jacket for protection against dust and water. In addition to the LED strips, the portfolio includes a range of LED drivers, profiles for surface or recessed installation, covers and other accessories. www.rdr.link/eh159

HYLEC Debox SL2 Hylec has launched the Debox SL2, which comes with five approved 32A lever connectors and is supplied with all components for completely tool-free installation. The Debox SL2 is the smallest junction box with five poles on the market, and the only product supplied complete with five screw-free terminals. Each individual 32A lever connector can take up to three conductors. It is suitable for joining either flat or round profile cable with a minimum conductor size of 0.5mm and a maximum of 2.5mm. After inserting cables and closing the levers, the lid of the box is simply snapped shut and secured with the butterfly clip supplied. The Debox SL2 requires a tool in order to be reopened, which complies with current regulations. The box is maintenance-free and suitable for all internal applications. www.rdr.link/eh160

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PROTEUS SWITCHGEAR Surge Protection Devices Since the introduction of the 18th Edition, there has been a growing demand for the use of Surge Protection Devices (SPDs) for not only commercial and industrial applications, but also the domestic market sector. So, Proteus Switchgear has introduced a new product featuring a 100A DP isolator switch with optional Type 1+2 or Type 2 SPDs. This compact unit offers dedicated isolation to the installation with the added benefit of an SPD. Also, the SPD is uniquely connected to the isolator switch by two fully insulated bus bar links, meaning the only connections the installer has to make is the meter tails in the isolator and earth connection from the SPD. www.rdr.link/eh161

DIGITAL ROUND-UP

New Aico site designed by customers

Aico has launched its new website, built around end-user feedback, in order to enhance its customers’ experience. Prior to designing the site, Aico spent considerable time speaking and listening to customers about what currently works well for them and what they would like to see going forward. One of the key features of the website is being able to search for products via easy-to-use filters, such as Series, Technology, Power Sources and any Accessories that may be needed, as well as a specific product search function. An events calendar has also been added for customers to see where Aico will be exhibiting in advance of each show. Key elements of the services that Aico provides have also been brought to the front of the website, making it easier than ever for customers to find, for example, how to become an Expert Installer.

To see the new website for yourself, visit: www.rdr.link/eh162

Online training academy launched for Drayton installers Drayton has launched an online training academy as part of its installer loyalty scheme, the 9° Network. 9° Know How gives members exclusive access to product training, best practice installation advice, troubleshooting tips and more. The first available training module is focused on Wiser, Drayton’s smart multi-zone heating system, and allows installers to achieve Wiser Approved status from the comfort of their own home. The 30-minute training module is delivered through a series of videos, including a product overview, kit selection advice, commissioning and set-up guides, and tips for helping customers get the most from their Wiser system. Once the videos have been watched, installers have to complete multiple-choice tests to achieve their Wiser Approved status. Further training modules covering the full range of Drayton heating control products will be added to 9° Know How in the coming months.

To register as a member of the Drayton 9° Network and gain access to the online training academy, visit: www.rdr.link/eh163

Mersen goes global A new global website has been launched by Mersen, including enhanced global product data, custom products and solutions, fast access to technical experts and enhanced market schematics that showcase the company’s entire product line. The new Product Finder allows you to search by product number, product category, or by product specifications. The site is fully optimised for all devices, so it is easily viewable whether you’re using a tablet, mobile phone, laptop or desktop computer.

Check out the new site at: www.rdr.link/eh164

PROFESSIONAL ELECTRICIAN September 2019 105

digital round-up

Digital version of EICR Codebreakers now available NAPIT has released a digital version of its industry-leading publication, EICR Codebreakers. The digital guide is only available to NAPIT members as an additional member benefit. The e-book can be downloaded and used on all electronic devices. The Codebreakers guide is one-of-a-kind and was crowned Top Product of the Year by PE in 2018. The book features hundreds of EICR observations and their corresponding codes, as well as detailed sample forms, information specific to the frequency of inspections and tests and information directly tailored for the social housing sector. The digital Codebreakers guide is available to purchase exclusively from NAPIT Direct and is hosted on VitalSource.

To get your copy today, visit: www.rdr.link/eh165

Click Smart gets smarter Scolmore has updated the App for its Click Smart range with a â&#x20AC;&#x2DC;cloud functionâ&#x20AC;&#x2122; feature. It provides access to Click Smart installations through the internet, allowing secure control of devices from anywhere in the world. Until now, access to Click Smart through any smart device or tablet was only possible when you were local to the network. If you already have Click Smart with a Smart box, this is simply an update to the App, which means all previously created settings, scenes and schedules will be unaffected.

Watch this video to see just how simple it is: www.rdr.link/eh166 106 September 2019 PROFESSIONAL ELECTRICIAN

The toolkit that fits in your pocket Prysmian has released Cable App, a pocket toolkit for electrical professionals that is designed for those tradesmen who are on the go. Unlike other apps, Cable App accurately calculates and determines solutions across a wide range of products, including buried SWA. It also evaluates energy and CO2 savings through the consideration of alternative conductor sizes, all in line with the recommendations in the 18th Edition. Technical documentation is comprehensively illustrated with photographs and imagery, and direct links to product datasheets are offered for ease and convenience. Additional features include news and videos related to the world of electrical professionals, consultants and engineers.

To download the App, visit: www.rdr.link/eh167

ELEX2019

THE TRADESHOW FOR PROFESSIONAL ELECTRICIANS PROFESSIONAL ELECTRICIAN