Professional Electrician & Installer April 2021

001_PE_APR21 03/03/2021 23:43 Page 1

TO EE FR DE RA ET TH

PROFESSIONAL

ELECTRICIAN THE BUSINESS MAGAZINE FOR THE ELECTRICAL TRADE

& INSTALLER

APRIL 2021

TURNING UP THE HEAT

SANGAMO HEATING CONTROLS GET A REVAMP

THE ULTIMATE EV INSTALLER'S GUIDE

ALL THE INFORMATION YOU NEED TO KNOW

ALSO IN THIS ISSUE: TECHNICAL ADVICE ● NEW PRODUCTS ● CAUGHT ON CAMERA ● PRIZE DRAWS AND MORE…

PE Page Grid_Layout 1 02/03/2021 08:58 Page 1

003_PE_APR21_Layout 1 04/03/2021 00:07 Page 3

Total Average Net Distribution: 68,683 Certification period 1 January 2020 - 31 December 2020

April 2021 Volume 37 No.4

REGULARS 5 9 19 22 32 54 64 80

VIEWPOINT NEWS LETTERS CODEBREAKERS MADE 2 MEASURE PRODUCTS IN PRACTICE CAPTAIN C-TEC CAUGHT ON CAMERA

66

TECHNICAL & TRAINING 25 How thermal insulation can effect flat twin and earth cables 29 What distance should sockets and cooker switches be sited from a hob?

34 A look at the potential issues associated with using TN-C-S supplies for outbuildings 36 Can virtual reality help to create a new breed of future-ready electricians?

39 Rounding-up the latest training courses and resources for electrical professionals PRODUCTS & BUSINESS SOLUTIONS 43 ESP revamps the Sangamo range of thermostats and heating controls

Electric vehicle installations: the value of undertaking a thorough site survey

ELECTRIC VEHICLE SPECIAL 65 What opportunities lie ahead for EV charge point installers?

66 Why it's so important to undertake a thorough survey before beginning any installation works

70 Smart charging infrastructures: the value in using approved cable suppliers

48 We take a look at a new business management App for trade professionals, invented by one of our own

72 How to undertake EV charge point testing

52 How a DALI control system has helped one university to better manage the building's lighting at the touch of a button 56 Rounding-up the latest products, tools and equipment to help you in your work

54

68 What type of surge protection is required for EV installs?

46 Understanding the quality and safety implications of choosing counterfeit connectors for electrical terminations

51 A local council improves its PAT testing processes with the help of Seaward

Hamilton accessories light up luxury hotel

74 Reviewing the NICEIC Electric Vehicle training course 76 Understanding 'load balancing' and its importance in EV installations of the future

PRIZE DRAWS 14 WIN! A Rhino PipeTube Pro could be yours 61 WIN! A C.K Magma Wheeled Rucksack to be bagged How to carry out EV charge point testing

78 Why keeping charging equipment safe and dry can help you to avoid customer callbacks 79 Introducing an electricianinvented solution that will help save time and money on-site

72 PROFESSIONAL ELECTRICIAN April 2021 3

PE Page Grid_Layout 1 01/03/2021 09:15 Page 1

005_PE_APR21_Layout 1 04/03/2021 01:36 Page 5

@proelectrician

professionalelectrician

Meet the team Editor RICHARD BOWLER email: pe@hamerville.co.uk Editorial Assistant PATRICK SWAN email: pswan@hamerville.co.uk Digital Manager REBECCA MCGEOCH email: rmcgeoch@hamerville.co.uk 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. © 2021

Subscriptions to PROFESSIONAL ELECTRICIAN are available.

Image References (Adobe Stock): Pg 12 Masked piggy © Looker_Studio Pg 19 What can I do? © Vadimguzhva Pg 25 Site inspection © May Chanikran Pg 29 Cooker pot © Kate Pg 65 Green future © Elnur Pg 66 Site survey © Auremar Pg 68 Home charging © Herr Loeffler

pe@hamerville.co.uk

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

Editor’s Viewpoint

Are wholesalers counting the cost?

A

lot has been said and written about the ways that individuals and businesses have had to adapt to the 'new normal' over the past year and you can’t disagree with the fact that, as a society, the digitisation of the way that we work, consume and socialise has been accelerated rapidly during this period.

With restrictions in place regarding the opening of certain premises', shops and outlets, there has been a huge onus on the way that businesses 'pivot' the way they're operating and this, inevitably, has led to end users exploring, and being exposed to, new options outside of the traditional supply chains they may have previously been used to – whether through convenience, necessity or price considerations.

The electrical sector is one that is far from sheltered from this change of attitude, especially as electricians and contractors have been able/encouraged to work throughout the pandemic and have, therefore, been reliant on distributors and suppliers to make sure the products they require are available conveniently and on time.

But, one of the potential caveats from this has been the impact it has had on the reputation and standing of the 'traditional' electrical wholesaler in the eyes of some contractors and installers.

In the lead up to writing this month's column, I'd personally noticed a number of social media comments and posts from electrical professionals discussing the price differential between an electrical wholesaler and a more retail-focused outlet – the consensus in some quarters, it seems, is that the humble wholesaler is just too darn expensive these days.

Although price is a constant consideration in any transaction, is it always the most important thing? Not if the results of our recent 20/21 Reader Survey (which some of you reading this will have kindly filled out) are anything to go by.

When we asked respondents to choose the key influencing factor in their choice of electrical wholesalers, 'Price' (19%) generated the lowest number of responses.

Instead, 'Availability/Choice of Products' (35%), 'Customer Service' (24%) and 'Relationship/Loyalty' (24%), all ranked higher with respondents. What many will often forget to

take into consideration, however, is that the three leading 'influencing factors' also come at a cost.

For a wholesaler to employ a member of staff who has the electrical industry knowledge, experience and human touch to advise and serve its customer base correctly, the investment is significant.

They're also, in many cases, operating online ordering facilities while still retaining either a fully or partially operating physical store. Think about the money and time that will have had to go into making this a possibility, in comparison to a re-seller that may have been set up from day dot to offer direct online purchases only and will, therefore, have had to do very little to change the way it operates throughout the pandemic.

We can’t criticise any individual for trading with a number of re-sellers and keeping their buying channels open. Clearly wholesalers will need to modernise and some stiff competition is healthy for any sector.

But there are a significant number of benefits to buying ‘local’, not least the ease of process involved with damaged goods or returns – something that is seldom guaranteed when buying through an online-only reseller. The issue of counterfeit products is also alleviated.

And, before you consider abandoning your traditional supplier based on price alone, take some time to think about how you'd feel in the following scenario: a long term customer of yours, that you've been loyal to and knows you've invested in the expertise, knowledge and equipment to do your job safely and properly, asks you to price up a quote for some work.

You spend 45 minutes to an hour (at least) working out the fault and what needs to be done, before explaining this to the client. Said client then very gladly accepts your expertise and goodwill (but not the price you're quoting) and then scours the internet for the electrician who provides the 'cheapest' quote to do the work.

You'd likely be livid, and rightly so.

That alone is worth some food for thought.

Richard B owler PROFESSIONAL ELECTRICIAN April 2021 5

PE Page Grid_Layout 1 02/03/2021 09:13 Page 1

PE Page Grid_Layout 1 02/03/2021 09:13 Page 2

PE Page Grid_Layout 1 01/03/2021 09:30 Page 1

009_PE_APR21_Layout 1 04/03/2021 10:26 Page 9

news @proelectrician

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

professionalelectrician

pe@hamerville.co.uk

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

Industry alliance urges government to rethink GHG cut Actuate UK, the new alliance of engineering services organisations, has urged government to reconsider its intention to remove funding from the £2bn Green Homes Grants scheme.

Actuate UK members have expressed their disappointment that only £320m of the original £2bn would now be made available through the GHG voucher scheme.

“Such drastic reduction of funding sends out all the wrong signals, especially as the government aims to put the green economy at the heart of plans for rebuilding the economy,” says Julia Evans from Actuate UK member BSRIA. “Initiatives to encourage the take up of low carbon solutions need to be long term and consistent,” adds Hywel Davies, from Actuate UK member CIBSE. “A short-term stimulus doesn’t create the market shift required to achieve net zero targets, including the development of a suitably skilled workforce in key sectors. To invest in the necessary recruitment, training and technologies, businesses must know that government is serious, and in it for the long haul.”

Actuate UK proposes that government: 1. Review the operation of the GHG, in consultation with the sector groups that would implement the energy efficient and

low carbon measures it is supporting.

2. Release all the original GHG funding, ensuring that the full £2 billion is available until March 2022 and act swiftly to resolve the administration problems with the scheme based on feedback.

3. Consider a requirement for GHG voucher to be used to create a ‘green building passport’ to give homeowners a plan from the medium to long term.

4. Develop a robust pathway so that the GHG voucher scheme can support the transition into future long-term support.

5. Reduce VAT to zero on all energy efficiency-related products.

Government has characterised the GHG initiative, set up to improve the energy efficiency of 600,000 homes in England by issuing vouchers to carry out home improvements, as a “short-term stimulus”. Grants could be used up to the end of the 2020-21 financial year, although work could carry on until March 2022.

A recent report from the Environmental Audit Committee (EAC) noted that vouchers were being issued at a ‘snail’s pace’ – only 20,000 issued at the last count, just 5% of the available vouchers.

However, there is clearly consumer demand and once administrative issues are resolved and the timescale extended, Actuate UK believes supply chains will have the full confidence to develop and support the scheme.

Are you in the club?

Rointe is urging installers to join the new Rointe Club, where they’ll enjoy unique features and benefits.

It’s easy to sign up and club members will receive: 1. Official welcome pack, including a hoody, freebies and stickers to identify your business as Rointe Trusted.

2. Rointe will include your business in its web locator to make it easy for customers to find you.

3. Every year you’ll receive Rointe’s advertising pack with catalogues, stickers and leaflets to help you explain the benefits of Rointe heating.

4. Preferential access to Rointe Projects and the team will recommend you for suitable heating installations.

5. Accumulate 3% of the net amount of all your Rointe purchases in gift cards, up to a maximum of £500. At the end of the year you can choose an e-gift card from hundreds of outlets.

Extra incentives are also available for those who qualify for 'Premium Installer' status.

GET MORE DETAILS ABOUT THE ROINTE CLUB AT: WWW.RDR.LINK/EZ001

PROFESSIONAL ELECTRICIAN April 2021 9

009_PE_APR21_Layout 1 04/03/2021 01:12 Page 10

news

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

WISKA UK turns 21 It’s a special year for WISKA UK, as the company celebrates its 21st year in the UK market.

After starting the business at the beginning of the millennium, with just Will and Maxine Rich at the helm and no sales footprint in the UK, the family owners of WISKA Hoppmann GmbH believed there was an opportunity for high quality, innovative electrical products, with a strong service to support them.

With the support of an experienced sales team and contacts in the electrical wholesale market, along with continuous contact with the electrical contracting side of the sector, the WISKA range has been extended and new doors have opened over the years.

The business has always had an emphasis on people, with over 45% of existing staff starting as an apprentice. This policy still remains in place, as well as the second generation of the family now involved in the business, ensuring the long-term cohesion and development.

In the future the WISKA product range will continue to grow, with an emphasis on new ideas and innovations, rather than 'me too' solutions. End users can also have the assurance that every new product development will offer advantages to installers.

LEARN MORE ABOUT WISKA'S PRODUCT RANGE AT: WWW.RDR.LINK/EZ002

009_PE_APR21_Layout 1 04/03/2021 01:12 Page 11

@proelectrician

professionalelectrician

pe@hamerville.co.uk

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

Control4 certifies DoorBird driver Control4 has officially certified the DoorBird driver, meaning DoorBird IP door stations can now be integrated directly into Control4 systems.

The agreement means customers can now access their IP intercom directly from Control4 interfaces without the additional cost of a third-party driver.

The new certified driver recognises the doorbell, video camera and motion sensor of the DoorBird door station immediately after installation. The devices communicate over a shared-network via hardwired PoE (Power over Ethernet) or WiFi. This integration features audio and video calls from the door station to touch panels or the Control4 OS 3 App, as well as a live view of the entrance area via the DoorBird camera.

When a visitor rings the call button, a ringtone can play through the home’s audio system. The resident can then open their electronic door lock or garage door via the DoorBird icon, or anytime from the DoorBird App.

The driver is free-of-charge and available in the Control4 Composer online database. The smart video intercoms are developed and produced by Bird Home Automation Group in Berlin, Germany.

GET MORE DETAILS ABOUT THE DOORBIRD RANGE AT: WWW.RDR.LINK/EZ003

009_PE_APR21_Layout 1 04/03/2021 01:12 Page 12

news @proelectrician

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

professionalelectrician

pe@hamerville.co.uk

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

Electricians launch fund to protect against COVID penalties A group of electricians have launched a fund to ensure that if any of them contract COVID-19 or are forced to self isolate, they'll not be left financially destitute.

The workers, who are members of Unite – the construction union – are employed by electrical sub-contractor NG Bailey and are working on the new MENSA building at the Atomic Weapons Establishment in Aldermarston, Berkshire. If the workers are required to self-isolate due to coming into contact with someone with COVID-19, they're only entitled to statutory sick pay (SSP) – worth just £95 a week.

The workers are also in theory entitled to industry sick pay under the Joint Industry Board (JIB) agreement. However, this is not paid for the first two weeks of sickness, meaning by the time it is payable the isolation period has ended and the worker has returned to work.

How it works The workers collect £10 a week from those participating in the scheme and if a worker is required to self-isolate or develops COVID-19 they're paid £205, which together with the £95 SSP means they receive a total of £300 a week.

Between 100-120 workers are participating in the scheme and there are 8-10 workers involved in collecting the workers’ money.

Most weeks the scheme collects around £1,100. The workers

have also introduced an electronic card payment system to make collection easier.

In total 16 workers have required support from the scheme, 15 have been required to self-isolate and one developed COVID-19.

Unite's National Officer for Construction, Ian Woodland, said: “Our members deserve nothing but praise for establishing this scheme. Workers are left with the stark choice of doing the right thing or paying the bills. No one can survive on £95 a week.

“This has inevitably led to the further spread of COVID-19 and ultimately increased fatalities from the virus. While this is a heart-warming story of workers taking collective action, it should shame construction employers and the government to act and ensure that all workers are better protected.”

GET MORE DETAILS ABOUT UNITE AND MEMBERSHIP DETAILS AT: WWW.RDR.LINK/EZ004

Insta impact for Bosch Professional Bosch Professional has recently launched a new UK Instagram channel.

The new channel builds on the success of Bosch's award-winning UK Facebook channel (which now has over 45,000 followers), and offers trade professionals the opportunity to get all the latest news and information on the newest power tools, measuring tools and accessories from its popular range of products.

Alongside news, it will feature regular tool reviews and opinions from a wide range of well-known trade professionals, including electricians, plumbers and heating engineers, carpenters, tilers, general construction etc. They'll show the tools in use and give their genuine and honest thoughts on the products.

The channel will also showcase videos and information on the latest innovative technologies such as BITURBO Technology, as well as offering UK trade professionals the chance to apply to become a Bosch tool tester.

FOLLOW THE BOSCH PROFESSIONAL INSTAGRAM CHANNEL AT: WWW.RDR.LINK/EZ005

12 April 2021 PROFESSIONAL ELECTRICIAN

PE Page Grid_Layout 1 30/04/2019 11:39 Page 1

014_PE_APR21_Layout 1 03/03/2021 23:55 Page 14

PRIZE DRAW

W IN One reader will win a fantastic prize for their work van this month.

DRIVE AWAY WITH A RHINO PIPETUBE PRO!

T

he first complete re-design of Rhino's hugely popular 3m PipeTube since its launch in 2005, the PipeTube Pro is a new system for securely transporting copper pipe, plastic conduit and other similar materials.

Rhino's recent market research identified that 67% of customers felt that a PVC lining was the most important feature of a pipe carrying accessory.

Listening to their needs, Rhino has added an optional full-length PVC lining to the tube, to stop the galvanic reaction that can otherwise take place, discolouring the pipes stored inside.

Other key areas have also been the focus of the updated PipeTube Pro, including: ● Upgraded integral locking system

14 April 2021 PROFESSIONAL ELECTRICIAN

● Additional rubber seal to reduce water entering the tube ● Stylish new design Climbing the ladder A second new product has also recently arrived from Rhino in the form of the AluminiumLadder. The product combines strength and style to provide one of the most lightweight and aesthetically pleasing roof access products available for commercial vehicles.

By utilising highly robust aluminium handrails and glass filled nylon rungs, the AluminiumLadder offers an extremely lightweight solution – 50% lighter than Rhino's previous steel ladder, excluding fitting kits.

Get more details about both products at: www.rhinoproducts.co.uk

HOW TO ENTER TO ENTER YOUR NAME INTO THE FREE PRIZE DRAW TO WIN A RHINO PIPETUBE PRO, SIMPLY FILL OUT THE CONTACT FORM AT: WWW.RDR.LINK/EZ006 Deadline for entries: 10/05/2021.

Usual T&Cs apply.

PE Page Grid_Layout 1 03/03/2021 09:13 Page 1

PE Page Grid_Layout 1 02/03/2021 09:29 Page 1

PE Page Grid_Layout 1 02/03/2021 09:29 Page 2

PE Page Grid_Layout 1 03/03/2021 09:10 Page 1

019_PE_APR21_Layout 1 04/03/2021 00:05 Page 19

@proelectrician

professionalelectrician

pe@hamerville.co.uk

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

Letters

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

Great expectations need a dose of reality Dear PE, I'm writing with details of a couple of practical points that arise from the Replacing a Consumer Unit in a Dwelling technical article in February's excellent edition: Shared neutrals The article states: "Where a shared neutral is identified, the circuit should not be reconnected. The client should be advised to have the necessary work carried out before replacing the existing consumer unit."

In my experience, none of this is remotely as simple as it sounds!

In the first place, such a 'fault' (normal practice in thousands of council house rewires and hundreds of new-builds from the 1960s and 1970s) is only likely to be found when the consumer unit replacement

is under way. Furthermore, even if you can convince the customer you have found a genuine problem, which they will have to pay you to fix – "It was done by an electrician and it's been fine for 50 years.

You're just trying to sell me something!" – the remedial work will have to be organised for another day; perhaps many weeks later.

A more realistic way of looking at it is that the electrician will connect the two lighting circuits in such a way as to avoid nuisance RCD tripping, until the customer can be consulted and further work agreed, priced and organised.

High resistance earth faults These are a much more common problem, especially when introducing RCD protection for the first time to an installation

which may have 'suffered' a number of alterations during its life.

Knowing this, we ought to carry out at least an overall insulation resistance test before pricing the job. But this means taking the time to disconnect surge protection devices and other test-sensitive equipment (which the customer may not realise they have), before switching off to do your test.

Even so, this doesn't tell you what or where the fault is, let alone if there's more than one. How much time and trouble does one invest in a job you haven't even got yet? Especially as you may, by now, have inconvenienced – or even alienated – a customer who only got you there to offer a quotation!

These, and other frustrations (positioning, meter tail and earth bonding upgrades) are all part of what it takes, in this day and age, to get what the customer sees as a simple replacement job done. Negotiating them is always made much harder when the customer is an absentee landlord, who you may not have worked for previously.

I'm certain many of your readers will be very familiar with all of this, and much more, when it comes to reconciling the ever more complex web of regulation with the expectation of customers. In situations like these, for every understanding client, another will just look at the bottom line and employ someone less discerning.

Sadly, walking away from the penny-pinchers (which we have all done many times) just allows the cowboys in. A vicious cycle some might say.

I'd be interested to hear the opinions of other readers regarding this subject and whether they take a similar view to myself, Kind regards, Brian Bunce

PROFESSIONAL ELECTRICIAN April 2021 19

019_PE_APR21_Layout 1 04/03/2021 10:31 Page 20

@proelectrician

professionalelectrician

pe@hamerville.co.uk

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

Letters

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

EV charger issues dampen the spirits Dear PE, With the rise in demand for EV charging points installed in homes, I'd like to raise a concern through your magazine regarding the 'waterproofness' of these points.

Recently, I was called out to a house where the RCD had tripped and half the house had lost power and lights. On investigation, this was found to have been caused by the fact that rain had got into the rubber cap of the connector that plugs into the car.

The cable was coiled up and the connector was facing down, making it easier for rain to leak in.

I suggested that the homeowner took this up with the installation company as, in my view, the level of waterproofness was not high enough, so it therefore wasn’t fit for purpose. I also visited another house which had a different brand of EV charger installed and, again, the connector had a flimsy rubber connector on it. I suggested to both customers that in order to reduce

the risk of the RCD tripping out, they screw a spring clip on the wall so that the connector faced upwards and water wouldn't leak in.

I'd just like to know whether this a common problem and, if so, how charge point manufacturers and installers can help customers to overcome this issue during the initial installation, Best regards, Graham Fenning

019_PE_APR21_Layout 1 04/03/2021 10:31 Page 21

Test case scenario poses questions Dear PE, Further to some recent article content you've published in the magazine, I'd like some clarification on the testing of EV charging points.

Last year I undertook an EV charging course with one of the leading industry names and, on the subject of testing, it was implied that to test the different manufacturer's equipment, you had to use their own test equipment to do so, for example ‘Brand X's EV kit commissioned by ‘Brand X’ tester.

In recent issues of your publication I've seen a good number of test equipment brands offering EV testing kits, which vary in price and functionality. My main concern is whether the warranty of Brand X charger

would be valid if tested by a piece of test equipment that has been purchased at a less than top-end price.

Best regards, Alan Sterling

Ed's note: Thanks to both Graham and Alan for their queries. Fortunately we've got a cracking special feature section dedicated to EV charging later in this issue (starts page 65) where you can find expert answers to both letters, plus lots more useful advice.

022_PE_APR21_Layout 1 04/03/2021 00:14 Page 22

THE

CODEBREAKERS NICK BORMAN: I WAS UNDERTAKING AN EICR AT A HOTEL AND THESE ARE JUST SOME OF THE THINGS I FOUND WHILE I WAS THERE...

Installs in hotel areas that are not open to public scrutiny, often take on a more utilitarian approach, as the client is looking for functionality, at the expense of finished aesthetics. This doesn’t mean the installation can be less safe, or not meet the requirements laid down by BS 7671.

I’ll break down what we can see individually and look at coding accordingly.

The SY cable used here might form part of a design and have an acceptable departure from BS 7671, providing this is logged and documented adequately. In the absence of any documentation, we need to look at the cable’s adequacy for this installation.

If the glands are designed for it, and if it is installed within manufacturer's guidelines, there is no reason this SY cable could not be used. In this case, however, the radii of the cable exiting the isolator and again where it enters the cavity, may be a little tight, and also not adequately supported.

There is what appears to be a separate

cpc running alongside the SY cable, but as it is not connected correctly inside the isolator, the continuity is lost, and the equipment being supplied would have no cpc. This is a more serious outcome and would automatically attract a C2 code. The method of termination for the cpc also leaves room for improvement as it appears to be held by the terminal screw on top instead of being inside the connector.

I’m not sure what the red phase tape on the brown conductors is identifying, as brown is a line conductor colour, and red is no longer seen as an acceptable marker for live AC conductors. As I can’t see any danger or potential danger, or any benefit of removing the tape, I see this as 'no code'.

The connection of the SY cable fine wire conductors, in screw terminations of the isolator without being suitably treated, such as being provided with ferrules, led to spreading of the conductors and potential overloading of the terminals.

The Observations, Regulation infringements and Codes applicable to this observation would be: Circuit CPC not continuous thorough its length: Not correctly connected within rotary isolator

131.2.2, 134.1.1, 411.3.1.1

C2

CPC not connected into rotary isolator terminations correctly, possible poor mechanical contact

134.1.1, 134.1.4

C2

Possible strain on conductors due to tight bending radii of SY cable

134.1.1, 522.8.3

FI C2

Possible poor connection and termination of SY cable fine wire conductors

526.9.1

FI

SY cable exiting rotary isolator not supported, possible strain on terminations and isolator structural integrity

134.1.1, 522.8.5

C2

GET THE BOOK AND CRACK THOSE CODES!

Updated 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.

22 April 2021 PROFESSIONAL ELECTRICIAN

022_PE_APR21_Layout 1 04/03/2021 00:15 Page 23

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

RICHARD MARSHALL: I REMOVED A METAL LIGHT FITTING WHILE CARRYING OUT AN EICR AND FOUND THIS BEAUTY. YES, THAT’S A PERMANENT LIVE IN A BARE TERMINAL BAR FROM A CEILING ROSE!

Unfortunately, we see this so often; I don't think there is a spark that hasn't come across something like this in their career and, if they haven't, I'm sure they will at some stage.

My first thought is that I can only hope that this was the householder, previous tenant or another 'DIYer', and not a qualified electrician.

This is extremely dangerous. The live conductors are not supported inside the luminaire base, and the cable connecting the luminaire head assembly to the live terminals is just left floating. Let's not forget the live loop and switch either, as both appear to have no protection and support.

Given the luminaire's weight, it is possible for the cable to slip and drag the live terminals onto the casing of the luminaire. If the luminaire isn't Class II, that would be an extremely dangerous thing to happen.

The cpc also appears to be free-floating and not adequately terminated.

I'm afraid it's not going to be a good outcome for the client in this case!

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

Circuit CPC not adequately terminated at luminaire base

134.1.1, 134.1.4, 411.3.1.1

C2

Poor termination and support of live conductors

134.1.1,134.1.4, 416.2.3, 526.5, 526.6, 526.7

C2

The 18th Edition Codebreakers publication is priced at £17.99* (members) or £19.99* (non-members). Hard copies and digital issues are available. * Prices exclude VAT, postage and packaging

ORDER YOUR COPY OF NAPIT CODEBREAKERS BY VISITING: WWW.RDR.LINK/EZ007

PE Page Grid_Layout 1 24/02/2021 09:30 Page 1

025_PE_APR21_Layout 1 04/03/2021 00:19 Page 25

TECHNICAL & TRAINING

The technical experts at NICEIC & ELECSA look at the effect that thermal insulation can have on flat twin and earth cables.

THERMAL INSULATION AND FLAT TWIN & EARTH CABLES

T

his article considers the effect that thermal insulation may have when placed on PVC/PVC flat twin and earth cables within a roof space and other such areas.

Also considered will be the influence thermal insulation may have upon an electrical installation when carrying out an alteration or addition.

When designing an electrical installation, consideration should always be given to the suitability of cables in relation to the effects of temperature from ambient or thermal conditions. Regulation 523.9 of BS 7671 refers to the installation of cables and the preference to avoid areas where cables are liable to be covered by thermal insulation.

However, with ever increasing requirements for energy efficiency and

improved sound insulation within domestic and non-domestic premises, the retrofitting of insulation has become common practice. It is therefore, increasingly likely that existing cables within roof voids, walls and under floors will be in contact with insulating materials.

Where this is the case, it may prove problematic for a contractor when attempting to make an alteration or addition to a circuit or while undertaking a periodic inspection of an installation.

It is long recognised that where PVC sheathed and insulated cables are surrounded by polystyrene insulation, the plasticiser within the PVC ‘migrates’ out of the PVC. This has the effect of hardening the PVC, leading to brittle insulation which may generate an increased risk of fire.

Current carrying capacity Typically, the method of installation will impact on a cable’s current-carrying capacity (𝐼z). The addition of thermal insulation surrounding cables will impact directly upon the cable’s ability to dissipate heat during normal use.

Any increase in temperature may lead to a reduction in the life expectancy of the cable or, in extreme cases, cause damage to the insulation, sheath or surrounding area. However, the actual risk would depend upon the type of cable, the type and thickness of the thermal insulation and the current demand for the circuit.

To ensure cables meet the

PROFESSIONAL ELECTRICIAN April 2021 25

025_PE_APR21_Layout 1 04/03/2021 00:19 Page 26

TECHNICAL & TRAINING

requirements for protection against overcurrent (Chapter 43 of BS 7671) the cross-sectional area of the conductors may need to be increased to compensate for any reduction in the current carrying capacity due to the additional insulation.

Circuits having an overcurrent protective device not exceeding 6 A As with many domestic circuits, and most typically lighting circuits having an overcurrent protective device rated at 6 A, the subsequent addition of thermal insulation is unlikely to have any impact on the circuit design.

Where the installation method ‘clipped direct’ applies (Table 4A2 and 4D5 in Appendix 4) and the cable is subsequently covered by thermal insulation for a length of at least 0.5 m, the current-carrying capacity of the cable must be reduced by half (Regulation 523.9). This means that for a lighting circuit, the smallest permitted conductor size of 1.0 mm2 (Table 52.3 of BS 7671) has a de-rated current-carrying capacity above that which is necessary for the rating of the protective device.

For example, using Table 4D5 column 6, a 1.0 mm2 cable has a tabulated current-carrying capacity of 16 A. If the cable is totally surrounded by thermal insulation for a distance exceeding 0.5 m, the current-carrying capacity reduces to: 𝐼z = 𝐼t × Ci ∴ 𝐼z = 16 × 0.5 = 8 A; this still satisfies the requirement for protection against overload current found in Regulation 433.1.1: 𝐼b < 𝐼n < 𝐼z.

Where: 𝐼z = Current carrying capacity of the cable corrected for defined conditions 𝐼t = Tabulated current carrying capacity of cable (Appendix 4) Ci = Rating factor for cables in thermal insulation (Table 52.2, 4A2 and 4D5) Furthermore, with the focus towards achieving greater energy efficiency, luminaires incorporating Compact Fluorescent (CFL) and Light Emitting Diodes (LED) are becoming more common. Therefore, the typical current demand for domestic lighting circuits has reduced considerably over time and could

26 April 2021 PROFESSIONAL ELECTRICIAN

now be considered to be insignificant.

Fig 1: Lighting cables covered by thermal insulation

Circuits having an overcurrent protective device exceeding 6 A However, where thermal insulation is placed upon a 1.0 mm2 cable and is grouped with other heavily loaded cables, the current-carrying capacity may no longer be sufficient due to grouping factors.

Furthermore, depending upon the building design and circuit loading, the thermal effects on other circuit cables within the same location and covered with additional insulation may be at a greater risk of damage. For example, a typical bungalow having cables within a roof void for feeding circuits such as a shower, cooker and/or ring final circuits are likely to be totally surrounded by, or in contact with, thermal insulation, such that the conductor’s cross-sectional area (csa) may no longer be adequate for the connected load.

Example: A 7.5 kW 230 V AC electric shower wired in 6.0 mm2 twin and earth cable is run through a roof space and clipped to the joists. The existing thermal insulation has a thickness less than 100 mm.

The design current (𝐼b) is approximately 33 A with an overcurrent protective device (𝐼n) of 40 A. Using Table 4D5 column 2, the current-carrying capacity of 6.0 mm2 is 34 A; it can be seen that the load can be carried safely.

Assume now that in order to reduce heat loss, additional thermal insulation has been installed to the roof void giving a thickness in excess of 100 mm. In this instance the current-carrying capacity of the cable must be reduced. Using column 3 of Table 4D5, the current-carrying capacity of 6.0 mm2 has been reduced to 27 A. With the extra thickness of thermal insulation, the shower cable is no longer adequate for the connected load and is likely to become damaged over time.

Note: Other rating factors and voltage drop are outside the scope of this article and will not be considered.

Testing and inspection It is a requirement that every electrical installation should be inspected and tested at regular intervals throughout their lifetime as a means of identifying any damage, deterioration or dangers that may affect the electrical safety of the installation.

Regulation Group 651 identifies the requirements for periodic inspection and testing and, where possible, visual inspections supplemented by the appropriate tests (Regulation 651.2).

Insulation resistance testing of conductors confirms the adequacy and effectiveness of the insulation as a means of providing basic protection. Regulation 643.3 sets out the requirements for insulation resistance testing and the options available. Where it is suspected that a particular circuit has been exposed to thermal damage as a result of heavy loading and/or additional thermal insulation, an insulation resistance test might reveal signs of damage/deterioration, which likely become more evident over time.

It is expected that the insulation resistance values of all circuit cables will be significantly greater than the values given in Table 64. Where this is not the case, further investigation will be required where the values of insulation resistance are less than those given in Table 64.

Generally, it is not usually recommended nor is it a requirement to

025_PE_APR21_Layout 1 04/03/2021 00:20 Page 27

gain access under floors, in roof spaces or within the fabric of the building during an inspection. Although, where it is necessary to gain further evidence for the Electrical Installation Condition Report (EICR) it may be necessary to extend the inspection to such locations.

However, the locations should not be accessed without taking the necessary precautions, such as confirming the adequacy for safe movement and ensuring the provision for adequate lighting and appropriate walkways or boarding.

Where an installation incorporates solar PV, a gas boiler and/or TV aerial booster, such access facilities should have been provided to permit subsequent inspection and testing.

Reporting defects As in all cases, the electrically competent person carrying out the inspection must inform the customer of any defect observed during an inspection that is likely to affect the continued safety of the installation. Where it may be apparent that an existing cable has been made electrically unsound such that a potentially dangerous condition exists due to the loading conditions of the cable and the addition of thermal insulation, an observation code of C2 should be entered on the EICR. However, where there are no signs of significant thermal damage to the cables or the surroundings due to the addition of thermal insulation but the conductors have insufficient current-carrying capacity with regard to the method of installation and the nature of the load, a code C3 should be given.

Summary Due to the reduced current demand of the connected loads through improved energy efficiency, it is unlikely that any subsequent addition of thermal insulation within domestic premises is liable to have any negative effect on lighting and ring final circuit cables. Although, where such circuit cables are grouped with other circuits carrying a greater current demand, there may be a risk of thermal damage.

Circuit conductors carrying larger load currents for significant periods of time may be subjected to negative thermal effects when covered by thermal insulation.

Although it may be difficult or impractical to undertake a visual inspection within restricted areas, the subsequent testing procedures as highlighted in Chapter 64 are likely to identify any relevant issues.

Where PVC sheathed and insulated cables are in contact with polystyrene insulation, the plasticiser within the PVC ‘migrates’ out of the PVC. This has the effect of hardening the PVC leading to brittle insulation which may generate an increased risk of fire.

Wherever possible cables should be rerouted above thermal insulation.

GET MORE DETAILS ABOUT NICEIC REGISTRATION AT: WWW.RDR.LINK/EZ008

PE Page Grid_Layout 1 02/03/2021 09:40 Page 1

029_PE_APR21_Layout 1 04/03/2021 00:22 Page 29

TECHNICAL & TRAINING

The team at Pro Certs Software provide guidance when installing a socket or cooker switch near a hob or cooker.

SOCKET AND SWITCH DISTANCES FROM A HOB

T

here are many guides for the minimum distance a socket or cooker switch can be from a hob or cooker. The reason there are recommendations for the minimum distances is to reduce the risks associated with electrical switch gear or socket-outlets being too close to a hob or oven.

Depending on which guide you read relating to cooker connection units near hobs and ovens, the distances range from 100mm to 300mm. As the recommended minimum distance for sockets near sinks is 300mm, we'd prefer to go by the 300mm rule, based on the same factors as mentioned in the sockets and sinks guidance.

Risks Possible risks associated with a hob or cooker switch/isolator or socket being behind a hob or cooker.

Burns If a hob switch or isolator is located behind a hob and the user requires to turn off the hob quickly the user should

NOT have to reach over a hot hob in order to turn it off.

Water and heat damage to electrical accessories If a cooker isolator is installed behind the hob or oven there is risk of heat damage being incurred on the cooker isolator from the hob or cooker. In addition to this, should a pan boil or overheat there is the potential risk of the cooker isolator getting wet.

FREQUENTLY ASKED...

Can a cooker switch be behind the hob?

No, a cooker switch should be located at least 30cm (300mm) horizontally away from the hob.

Can a cooker switch be above a hob?

No, a cooker switch should be at least 300mm horizontally away from a hob.

Can a socket be behind a hob?

No, sockets, switches or spurs should be installed at least 300mm horizontally away from a hob.

Limited space in a kitchen In some scenarios there may not be enough space in the kitchen to install cooker switches, sockets or spurs 300mm away from a hob or oven. In those circumstances it would be up to the installer to decide on a safe and readily accessible alternative location. Some guidance we found recommends a minimum distance from 100mm, however 300mm is the preferred distance up to a maximum distance of 2m and certainly not directly behind the hob.

A kitchen fitter may alter the layout of an existing kitchen by relocating the hob or oven which places the hob or oven too close or directly in front of existing electrical accessories. In those circumstances you should relocate the electrical accessories to

PROFESSIONAL ELECTRICIAN April 2021 29

029_PE_APR21_Layout 1 04/03/2021 00:23 Page 30

TECHNICAL & TRAINING

a safe location – this is best done before the new kitchen is fitted.

Sockets, switched fused spurs, light switches, cooker switches and hob isolators should not be installed behind or directly above a hob or oven.

Electrical fittings near cookers How far should an electrical accessory be located from a gas or electric cooker or hob? The NHBC answers this question: 'A minimum distance of 100mm, measured horizontally from an electrical accessory to the edge of a free standing cooker or individual hob is considered acceptable for the purposes of avoiding adverse effects from using a cooker or hob. An electrical accessory should not be located immediately above a cooker or hob due to the possibility of people reaching over suffering burns or the flexible cable of connected equipment being damaged.'

Source: NHBC – Electrical Fittings Near Cookers Part P of the Building Regulations Design and installation; P1. Reasonable provision shall be made in the design and installation of electrical installations in order to protect persons operating, maintaining or altering the installations from fire or injury.

BS 7671 On-Site Guide 7.4 Proximity to electrical and other services; 528.3 Electrical and all other services must be protected from any harmful mutual effects foreseen as likely under conditions of normal service. For example, cables should not be in contact with or run alongside hot pipes.

5 Isolation and switching – Means of isolation should be provided; 462.3 For every item of equipment.

5.4 Functional Switching; 463.1.3 All current-using equipment requiring control shall be controlled by a switch.

Electrician’s Guide to the Building Regulations 5.2.2 Location of accessories in kitchens; 1. Wiring accessories (e.g. sockets,

switches) should be mounted on the building fabric and not kitchen furniture.

2. Cooker control switches, extractor fan switches etc. should not be mounted so that it is necessary to lean or reach over hobs for their operation.

3. Socket-outlets should be installed at a minimum of 450mm from the floor.

4. Accessories should be installed at a minimum of 300mm from the edge of kitchen sinks and draining boards.

Conclusion The minimum distance a cooker switch, spur or socket can be from a hob or oven is 300mm horizontally away from the edge of the appliance.

Source: IET The Electrician's Guide to the Building Regulations = 300mm Source: NHBC Electrical Fittings Near Cookers = 100mm Software and solutions Pro Certs Software designs, develops and publishes electrical Apps and mobile electrical software to serve the electrical industry.

The Apps are designed from the ground up with the user in mind for ease of use, reliability and availability.

Furthermore, all electrical Apps are designed to work offline, even in 'airplane' mode.

Apps are available on Android and iOS platforms, while the Pro Certs electrical certification software is also available on Windows 10.

DOWNLOAD THE PRO CERTS SOFTWARE ELECTRICAL TOOLS AND REFERENCE APP AT: WWW.RDR.LINK/EZ009

30 April 2021 PROFESSIONAL ELECTRICIAN

PE Page Grid_Layout 1 02/03/2021 09:44 Page 1

032_PE_APR21_Layout 1 04/03/2021 00:25 Page 32

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 ask: I’VE JUST WON A NEW CONTRACT THAT INVOLVES WORKING ON SOLAR PV SYSTEMS – BOTH LARGE AND SMALL. WHAT ARE YOUR SUGGESTIONS FOR THE TEST EQUIPMENT I’M LIKELY TO NEED?

Megger says: Large solar PV arrays can produce voltages of 1,500V DC or more, so it’s essential to buy test equipment that’s been designed to handle these high voltages safely. A good choice would be the new DCM1500S solar PV clampmeter from Megger, which measures DC voltage up to 2,000V, AC voltage up to 1,500V and AC or DC current up to 1,500A. It also checks continuity and measures resistance, frequency, capacitance and temperature.

Another important feature is Bluetooth connectivity, which lets you capture your results on smart devices using the free Megger Link App. That means you can produce reports quickly and easily, with no risk of making transcription errors. There are also smart data hold, min/max hold functions, as well as facilities for measuring inrush current. The versatile DCM1500S has a CAT III 1,000V/CAT IV 600V safety rating and is supplied complete with standard test leads, a PHV1 lead to connect straight to the panels, a PHV2 4mm connector lead, a thermocouple probe and a hard carrying case.

We think you’ll find it’s just what you need for your new contract!

VIEW THE DCM1500S TECHNICAL DATA SHEET AT: WWW.RDR.LINK/EZ010

32 April 2021 PROFESSIONAL ELECTRICIAN

PE Page Grid_Layout 1 24/02/2021 09:36 Page 1

034_PE_APR21_Layout 1 04/03/2021 00:27 Page 34

TECHNICAL & TRAINING

THINK OUTSIDE THE BOX Paul Chaffers, Technical Events Manager and Technical Author of NAPIT’s On-site Solutions guide, takes a closer look at the potential issues associated with using TNC-S supplies for outbuildings

A

question that is often raised by contractors is: 'can I use a TN-C-S (PME) earthing system to supply an outbuilding?'

Unfortunately, the answer is not always black and white, and like a lot of areas of electrical installation design, it requires engineering judgement to be applied.

This article is a small extract from NAPIT’s On-site Solutions guide, which contains many installation examples and explores the various possibilities whilst providing useful solutions to everyday electrical installation tasks.

Protective Multiple Earthing (PME) Restrictions When supplying an outbuilding from a TN-C-S (PME) supply, we need to be aware of what issues can occur. BS 7671 prohibits the use of PME for some locations; caravan parks and marinas have special requirements, for example.

This is because the Electricity Safety, Quality and Continuity Regulations (ESQCR) prohibit the connection of a PME earthing facility to any metalwork in a leisure accommodation vehicle.

Further conditions regarding PME apply to most Part 7 sections within BS 7671 for special installations or locations. But why?

PME is a TN-C-S system, where the neutral and earth functions are combined in one conductor (the PEN conductor) on the supply side of the installation. The PEN conductor is referenced to Earth in multiple positions with Earth electrodes, as illustrated in Fig 1.

For overhead supply cables, this is carried out at the transformers and several utility poles between the transformer and installation. Underground cables are

34 April 2021 PROFESSIONAL ELECTRICIAN

generally earthed along the length of run with electrodes.

Historically PME systems have had the advantage of being backed up by numerous fortuitous connections to Earth via metallic pipes, etc. that are connected to the network via nearby installations' protective bonding, consequently providing a form of supplementary earthing. This accidental connection should never be relied upon, however it does play a considerable part in PME earthing systems.

Whilst the neutral and Earth is then separated within the installation, the PME characteristics can cause issues when using PME outside of an installation; one issue is known as a perceived shock.

Perceived shock Fig 1 shows the main building is supplied via a TN-C distribution system, with the nearest Earth electrode somewhere outside in the street. This distance could be considerable, perhaps 30 or 40 m away. A perceived shock can arise from touching anything metallic connected to the PME system of the main building, such as an item of Class I equipment, whilst being in contact with true Earth.

For outbuildings, such as our example, there can be a potential difference between the true Earth and the Earth

exported from the main building. This is due to a voltage drop in the PEN conductor, caused by the returning load current, and is something that happens under normal operating conditions.

034_PE_APR21_Layout 1 04/03/2021 00:27 Page 35

The problem is made worse when the body resistance is low. For example, imagine having a garden party in the summer; all the kids are jumping in and out of the pool, saturating the grass, and you have set up a temporary beer fridge at the bottom of the garden, fed from the outbuilding.

Anyone in contact with the fridge whilst standing bare foot on the wet grass, stands a good chance of feeling an unpleasant tingle from the potential difference. This is because any stray earth leakage from the fridge is taking the path of least resistance, and in this case, it’s through the wet body back to a nearby earthed position, which is not necessarily the installation's earth, just one on the system, see Fig 1.

PEN Conductor – Open Circuit More of a concern than perceived shocks are hazards associated with the loss of neutral on the supply. This can happen due to a breakdown of an underground cable joint or possibly the neutral becoming disconnected on an overhead supply, for example, on a utility pole by a falling tree.

The problem is, if the line conductor remains connected, the returning load current will not be able to return to source due to the loss of neutral, and because both the neutral and Earth are connected at the service head, the load current will now seek alternative return.

Consequently, all exposedconductive-parts and extraneous-

conductive-parts connected to the PME installation will rise in potential, creating an electric shock risk. Protective equipotential bonding will limit the effects inside the equipotential zone.

However, outside is a different story and could be fatal.

TT system for outbuildings As can be seen from the aforementioned concerns, many electricians will be forced to make an engineering judgement on the likelihood of a potential problem based on all the factors presented to them on the job. If the PME supply was being used for a light fitting in a wooden shed where all fittings were plastic and the shed had a wooden floor, the likelihood of a problem would be small.

On the other hand, if the shed had socket-outlets that could be used for equipment outside, then a possible issue could arise. It should be noted that accidents relating to the loss of a PEN conductor are few and far between.

In fact, the same shock hazard will apply to any PME installation where the supply neutral has been lost and there is a metal outside tap that is connected to the earthing arrangement by means of protective bonding.

For any outside installations where there is concern with using the PME

supply from the main building, it is recommended that the outbuilding is made into a TT system. This involves the use of a local Earth electrode instead of using the Earth from the main building.

The PME earthing should be disconnected at the outbuilding position. This can be achieved by using an insulated adaptable box, or by means of an insulating gland to separate earthing systems. Fig 2 shows an example of a detached workshop with TT earthing arrangement.

This allows the overcurrent protective device in the main building to operate if a line to Earth fault should occur on the supply cable. A local RCD provides fault protection for the circuits within the workshop.

It is worth labelling the inside of the adaptable box to ensure this intentional separation of earthing systems is not reconnected in the future by a less experienced electrician – see Fig 3 for an example label.

Conclusion Hopefully this article has demonstrated that there is not always a definitive answer for such design choices and contractors should be mindful of this when carrying out EICR work, as some outbuildings may use PME with little risk attached.

Where in doubt use a TT earthing system to avoid any potential issues.

FOR MORE INFORMATION ON NAPIT SCHEME REGISTRATION, VISIT: WWW.RDR.LINK/EZ011

PROFESSIONAL ELECTRICIAN April 2021 35

036_PE_APR21_Layout 1 04/03/2021 00:29 Page 36

TECHNICAL & TRAINING

CREATING VALUE WITH VR John Banks, Head of Product Management & Marketing at HellermannTyton, discusses how virtual reality can help to create a new breed of future-ready electricians, especially during a global pandemic.

T

he past year has seen electrical installers face many challenges, from uncertainty of projects through to carrying out training safely. While the sector – and the rest of the world for that matter – recovers, the key to ensuring a strong pipeline of skilled electricians is helping deliver essential training and retraining.

The implementation of virtual reality (VR) has been used as an educational tool in schools to attract younger generations for several years, but it’s also ideal for training within industry.

A survey by edTech platform, Bett, found that 90% of teachers agree that technology helps improve the quality of learning, which further reinforces the importance of integrating innovation and technology with learning. With VR’s ability to digitally replicate products and procedures, it’s become a key tool for HellermannTyton at its ACADEMY. Across many industries, training can drain both time and resources – this is even more so the case when companies rely on their best performer to train others.

When a company chooses to adopt VR training, they can train both current and new hires without having to rely on additional staff or resources.

36 April 2021 PROFESSIONAL ELECTRICIAN

Alongside this, VR can be used to train people whatever the weather – it doesn’t matter if there are adverse weather conditions, as all you need is a pair of VR goggles. Another added benefit is that these applications are usually available in a range of different languages, helping to overcome any translation barriers.

HellermannTyton UK’s VR experience, located at its Cannock site, let’s students explore five different scenarios using a pair of VR goggles, so they can see exactly how HellermannTyton’s products are used in a range of applications.

The technology is used for ‘problem-based’ learning, where the user can virtually access a range of different products to build a circuit, and see the aftermath in a simulated outcome. This makes it easy for students to understand highly complex products and how they work in unique areas. From a virtual tour inside a wind turbine to the carriage of a train, students can have immersive, real-world experiences that give them a taste of what working in the industry might be like.

Training tools like VR show just how diverse the day-to-day job role for an electrician can be, helping demonstrate that it’s an attractive career prospect. Electrical

companies must consider new ways in which they can innovate, engage younger generations and place their business at the forefront of this new digital age.

With so many young people and trained electricians unable to access traditional in-person training at this moment in time, HellermannTyton has introduced a new series of training programmes to its ACADEMY that can be accessed virtually, including live-streamed product demonstrations, webinars, and e-learning courses.

GET MORE DETAILS ON HELLERMANNTYTON'S ACADEMY AND TRAINING PROGRAMMES AT: WWW.RDR.LINK/EZ012

PE Page Grid_Layout 1 24/02/2021 10:12 Page 1

PE Page Grid_Layout 1 24/02/2021 10:15 Page 1

039_PE_APR21_Layout 1 04/03/2021 00:34 Page 39

TRAINING ROUND-UP

AICO MOVES WITH THE TV TIMES

A

ico's newly launched TV channel utilises the current YouTube channel, which is now rebranded and linked to a dedicated section on the Aico website. From there, new video content can also be displayed.

The channel will cover a vast range of topics and events, from entertaining and informative news to panel-style debates,

product reviews, guest speakers, expert advice, case studies, and more.

Working with several industry bodies such as Corgi Technical, EDA, and ECA, as well as the Chartered Institute of Housing and Inside Housing, Aico will be delivering engaging content to customers and professionals within the sector.

Due to the increased demand for virtual events and to support the Aico TV

channel, a bespoke on-site filming studio has been built. The studio will support Aico TV and help colleagues create a variety of content for the channel by utilising several back-drops, including a green screen.

SUBSCRIBE TO AICO TV AT: WWW.RDR.LINK/EZ013

039_PE_APR21_Layout 1 04/03/2021 00:34 Page 40

TRAINING ROUND-UP

CHANGES TO AM2 RE-SIT ARE ANNOUNCED

N

ational Electrotechnical Training (NET) has announced that Section A of the AM2 will be split into sub-sections, so should candidates need to re-sit they will only need to retake any sub-sections in which they were unsuccessful, and not the whole of Section A. This affects anyone re-sitting the assessment from April onwards, regardless of when their original assessment took place, and applies to all versions of the AM2, including AM2S and AM2E. The current Section A of the AM2 takes

place over 8.5 (AM2) or 10 hours (AM2S/E) where candidates have to follow an exact specification to prepare, install, connect and terminate conductors and cables using a 3-phase and neutral distribution board and associated equipment.

From April, the installation task specification remains unchanged but will now be segmented into these sub-sections: ● Installation of Lighting and Ring Final circuits ● Installation of 3-phase circuits ● Installation of Central Heating

control circuit ● Installation of Main Protective Bonding, Safety and Data circuits ● Installation of Containment (AM2S/E only).

The marking criteria hasn't been amended and the same standard as previous has to be met in order to pass the assessment.

The AM2 ‘Readiness for Assessment’ checklist details all skills and knowledge that are needed for the full assessment.

VIEW THE AM2 CHECKLIST AT: WWW.RDR.LINK/EZ014

PE Page Grid_Layout 1 02/03/2021 09:51 Page 1

PE Page Grid_Layout 1 24/02/2021 10:18 Page 1

043_PE_APR21_Layout 1 04/03/2021 00:38 Page 43

PRODUCTS & BUSINESS SOLUTIONS

GET READY FOR THE RELAUNCH With a revamped range of Sangamo heating and timer controls ready for 2021, the team at ESP looks at why the use of such products can help your customers to avoid wasting their energy.

I

n recent months ESP has made a significant investment to develop its Sangamo range of heating and timer controls. The exciting news is that the wraps are now off, giving installers, contractors and wholesalers a first look at the new range.

The existing Sangamo selection of Choice thermostats and controllers, well-known in the industry, has been totally revamped and relaunched as the Sangamo Plus range of heating and timer controls.

The range showcases brand new products, as well as enhancements and improvements to existing items, introducing key features that are designed to boost the products’ energy saving properties.

At the same time, the whole portfolio has been redesigned to create a sleek appearance and a uniform, ‘family look’ across all products. New packaging

designs have also been introduced across the entire collection.

Spoilt for Choice The Sangamo Choice Plus collections offer a wide range of heating and timer controls for domestic, commercial, and industrial use. ESP believes that this comprehensive offering will make it easier for contractors to select the right solutions for the project in hand and will provide wholesalers with a greater choice of products to offer customers.

With energy efficiency top of the agenda for the economy, businesses and householders, a key aim of the revamp is to introduce features that will assist with efficiency and performance to ultimately drive down energy usage and costs.

The new-look offering can be broken down into three main product categories –

Choice+ thermostats, Choice+ programmers and Powersave+ controllers – with a total of 15 products making up the range.

Choice+ thermostats The Choice+ thermostats range of products – designed for controlling heating systems via an electronic sensor – now totals seven products. The thermostat regulates and maintains a desirable temperature throughout the home by calling for heat as the temperature varies during the day. For example, if the temperature drops below the set limit the thermostat calls for heat from the boiler, heating the radiators until the set temperature is reached.

Choice+ thermostats include a TPI (Time Proportional and Integral) control feature to ensure a maintained temperature by analysis of the heating

PROFESSIONAL ELECTRICIAN April 2021 43

043_PE_APR21_Layout 1 04/03/2021 00:38 Page 44

PRODUCTS & BUSINESS SOLUTIONS

and cooling periods. In addition, the programmable thermostats include 'Optimum Start' and 'Delayed Stop' functions for additional efficiency, heating and cooling for the time programmed.

For installer convenience, Choice+ wireless thermostats are an option if a hardwired connection isn't available in the intended location.

The thermostats range comprises: ● Electronic room thermostat ● Tamper proof electronic room thermostat ● Electronic frost thermostat ● Electronic room thermostat with digital display ● Wireless electronic room thermostat with digital display ● 7 day programmable room thermostat ● Wireless programmable thermostat with digital display Choice+ programmers The Choice+ programmers are designed to control heating and hot water independently across separate channels via a programmed schedule.

There are certain properties where thermostats aren't required and a simple programmer to activate the heating or hot water is all that's needed. A Choice+ programmer allows the occupant to specify when a call for heat is made in order to match their lifestyle requirements and ensure energy efficiency.

There is a choice of 1- to 3- channel programmers in order to suit the system

44 April 2021 PROFESSIONAL ELECTRICIAN

application – from single channel control suitable for combi-boilers, to double control for independent heating and hot water and, finally, a 3-channel option for when two heating zones are required.

In addition, each Choice+ programmer has a selectable 'Service Interval' function, which assists with compliance to the Gas Safety Regulations requiring landlords to carry out annual gas safety checks on appliances in rental properties.

To ensure a user and installer friendly experience, the Choice+ programmers incorporate a large display screen with clear graphics and pre-set schedule.

The programmers range comprises: ● 1- channel programmer with digital display and service interval function ● 2- channel programmer with digital display and service interval function ● 3- channel programmer with digital display and service interval function Powersaver+ controllers The Powersaver+ controllers are primarily used to control immersion heaters. In a typical UK household nearly 20% of a home’s energy cost is spent on heating hot water. Leaving an immersion heater on all the time can be a significant waste of energy that can drive this figure up to 25%, or even higher. The automatic control of a Powersaver+ controller can, therefore, save on fuel expenditure and energy wastage.

Amongst a wide range of applications, the Powersaver+ controller models are also suitable for combi-boilers, panel

heaters, lighting (including LEDs) and towel rails. The range includes a double pole switched fused option to incorporate an extra isolation feature which separates the live and neutral wires, adding additional safety for high loads.

The controllers range comprises: ● 2 hour electronic boost timer ● 2 hour electronic boost timer & fused spur ● 7 day time switch with boost ● 24 hour fused spur time switch with boost ● 7 day fused spur time switch with boost Housing and packaging As part of the relaunch, the entire collection of products has undergone a complete housing redesign to produce a range that's consistent in look and features a bold, contemporary appearance to appeal to the end user.

Brand new packaging has also been designed to create a uniform look with striking blue and white colours that will stand out and make it easy to identify products within the range.

Dedicated brochure A dedicated brochure has been produced to provide full details of the entire range and will act as a valuable resource for installers and wholesalers alike. This can be downloaded from the ESP website and is also available on the Scolmore Group App within the 'catalogues' section.

WATCH A PROMOTIONAL VIDEO OF THE REVAMPED SANGAMO HEATING CONTROLS RANGE AT: WWW.RDR.LINK/EZ015

ADGRIDS_PE_ADGRIDS.PMM_May06 02/03/2021 10:00 Page 45

046_PE_APR21_Layout 1 04/03/2021 00:41 Page 46

PRODUCTS & BUSINESS SOLUTIONS

IS THE PRIC£ RIGHT?

Brett Smyth, General Manager EMEA of Ideal Industries, discusses the quality, integrity and safety implications of choosing counterfeit connectors for electrical terminations.

E

veryone loves a bargain. In the electrical sector, where margins are often tight, it’s not surprising that contractors will look for opportunities to reduce overheads by exploring value-for-money products. And after the tumultuous year we had in 2020, the drive to make cost-effective choices has never been greater.

But there’s a huge difference between value for money and 'cheap'. While, financially, choosing the lowest cost option may seem like the right decision, unbranded consumables could have negative commercial implications that cost much more than the small savings gained from choosing the cheapest option.

When it comes to cable connectors, for

46 April 2021 PROFESSIONAL ELECTRICIAN

example, the pennies saved by using unbranded products could result in installation integrity and safety issues, which could affect repeat business and even potentially the contractor’s reputation.

What’s the difference between branded and unbranded?

If something looks the same as a branded item and does the same job, it must be the same, right? Wrong.

But many contractors follow this philosophy when buying electrical consumables, where the savings gained are lowest but the potential pitfalls are just as significant.

Imagine, for a moment, that we're not talking about connectors but about a tool, a mobile phone or a work vehicle instead,

and consider whether you'd be willing to swap your branded item for something slightly less expensive and unbranded.

For the vast majority of people, the answer would be 'no'.

Why? Because they trust the brand and know that they're buying a quality item from a reputable company.

Now switch back to thinking about connectors: the same principles apply.

The branded product has not only been the catalyst for a new, faster, easier and more consistent termination method; it has also been designed and tested with a meticulous research and development process that ensures it is fit-for-purpose, easy to use and provides a robust solution throughout the service life of the installation.

046_PE_APR21_Layout 1 04/03/2021 00:41 Page 47

That design is protected by a patent, ensuring the company can continue investing in innovative product development and enable contractors to access faster, easier and more consistent installation methods.

Ideal Industries is amongst the brands that have invested in a detailed product development process for push-in and lever connectors, resulting in tested and proven products that are manufactured using quality materials. In-house manufacturing ensures that quality assurance protocols are in place to underpin product confidence, ensuring it will perform as expected, during installation and beyond.

Conversely, many unbranded, cut-price connectors are not only contravening patent law, but are often cheaply produced, without meeting the quality assurance and safety standards embedded in the product development and manufacture of branded products.

The pitfalls of using counterfeit products So, if the product looks the same and feels the same, what’s the difference between using a branded product and an unbranded one?

As a manufacturer, we have a duty to ensure we respond to consumer demand for good, quality products. But we also have a duty to ensure we are working with our installer base – both heating engineers and electricians – and equipping them with all of the training and skills they need to grow their businesses.

The benefits of installer networks and good quality training are out there for the taking – we recommend that electricians grasp the opportunities with both hands.

So with the future potentially being controlled at the touch of a button, now is the time to start thinking about partnerships or upskilling your business to become ‘smart’.

It pays to make the right choices It’s been a tough commercial climate for all aspects of the electrical delivery chain over the past few months and saving money where possible has been key to commercial resilience.

Sometimes, however, it pays to invest in quality rather than cutting corners.

It can be hard to spot counterfeit connectors because they are purposefully manufactured to look like leading brands, but branded products are always clearly labelled and packaged.

VIEW THE IDEAL INDUSTRIES WIRE CONNECTOR SOLUTIONS CATALOGUE AT: WWW.RDR.LINK/EZ016

048_PE_APR21_Layout 1 04/03/2021 00:44 Page 48

PRODUCTS & BUSINESS SOLUTIONS

WORK SMARTER, NOT HARDER

Tony Short has poured his 30 years' experience as a self-employed electrician into the development of a new business management tool for trade professionals. Following its recent launch, PE finds out more about the inspiration behind the Timter App.

T

hat time is money is a very old adage but when you’re running a small business, and balancing the demands of multiple roles, it’s a rule that the trades live by.

That was certainly the experience of Tony Short, a Fareham-based electrician who operates across the south east of England as a sole trader through his firm, Securus. So much so that it is a message conveyed as an acronym in the first three letters of the business management App that he's produced for the benefit of the trades – Timter.

“Any tradesman will tell you that paperwork can be a particular pain point, and I’ve always been open to any process that can improve the business – and save time,” explains the 52-year-old.

“I’ve been able to organise myself through spreadsheets for many years, but they'll only take you so far. When you’re doing so many different types of job, the man-hours involved in keeping them

48 April 2021 PROFESSIONAL ELECTRICIAN

current starts to add up. I’ve always thought there must be a better way.”

The germ of an idea came when Tony was in search of an inventory and stock control App, in order to manage what tools and materials he had at any one time. “That was the start of it, but it then occurred to me that what the trades really need is the ability to manage their business as a whole through a mobile App on their smartphone. The result is Timter.”

Tony approached two existing customers of his electrical business, who are experts in the field of digital technologies – and are now partners in the Tradecraft Tools business that's behind the App. From there a clear idea of what could be achieved would emerge. The journey has taken four more years to come to fruition, with Tony continuing to work full-time as an electrician throughout that period.

There's no doubt that the pandemic has brought the power of digital tools into

sharp focus, with huge levels of adoption reported. Where Timter departs from many of these is that it's specifically designed around the needs of the self-employed tradesperson, bringing multiple functions into one package.

“It always had to be an App,” continues Tony, “because I know all too well that you don’t want to be going home to stare at a computer at the end of the day – the guiding principles are simplicity and mobility. Instead of relying on two or three different software programmes, and an

048_PE_APR21_Layout 1 04/03/2021 00:44 Page 49

accountancy or book-keeping App, Timter puts everything in one easily accessible place.”

Timter is the perfect 'pocket-partner' through the lifetime of your projects, from initial professional quotes, to ordering products, project management, stock control and invoicing. Billable extras can be recorded, and more easily communicated to the client, while costly mistakes and omissions can be eradicated at every level.

“Whether you’re working to a fixed price, or charging on the basis of time and materials, the App can manage both, and it’s functions can be tailored to a particular trade. You can track the time you’re taking on a job as a whole, or constituent part of it, and if a customer wants to know your progress you can pull your phone from your project and demonstrate that you have all the information to hand.”

The App is now ready to download via the Google and Apple App stores,

and is available to use for free for a 45-day trial, after which time individuals can continue to use it without charge, but with limited features.

A subscription to the full product after 45 days will cost £30 a month, but, to help trade professionals recover from the impact of COVID-19, Tradecraft Tools is offering a discounted rate of £20 a month until February 2022. The company will also offer this discounted rate to newly-established trade businesses beyond February 2022.

“It’s about working smarter, not harder,” concludes Tony, “and at the same time projecting a professional image.”

DOWNLOAD THE TIMTER TRADE APP FROM THE APPLE STORE AT: WWW.RDR.LINK/EZ017 DOWNLOAD THE TIMTER TRADE APP FROM GOOGLE PLAY AT: WWW.RDR.LINK/EZ018

ADGRIDS_PE_ADGRIDS.PMM_May06 01/03/2021 10:32 Page 50

051_PE_APR21_Layout 1 04/03/2021 00:45 Page 51

PRODUCTS & BUSINESS SOLUTIONS

We find out more about how Seaward's equipment has helped to improve one local council's PAT testing processes.

PAT'S THE WAY TO DO IT

O

xfordshire City Council’s property maintenance and support services company is ensuring it meets its portable appliance testing (PAT) responsibilities with electrical safety testers from Seaward.

Preventative maintenance ODS (Oxford Direct Services) is responsible for maintaining the council's property portfolio, which includes 7,000 residential homes across the county, parks and streets, and employs a 200-strong team of builders, plumbers, electricians and other skilled trade professionals to carry out repair and maintenance work.

As part of the company’s preventative maintenance programme, the plant management department based at the Horspath Road Depot in Oxford, is responsible for checking the safety of all electrical power tools and equipment the workforce uses, which includes dozens of drills, portable lighting equipment, vacuum cleaners, heaters, compressors and batteries.

Indeed, an estimated 9,000 individual items used by the workforce need to be regularly inspected and safety checked by appliance tester/plant room assistant, Philip Collender.

This broad testing responsibility requires a rigorous safety management approach that links test schedules with

appliance identification systems and maintaining comprehensive test records for all items tested. To meet this need, ODS has been a long-term user of Seaward PAT testing equipment, including the handheld Apollo 600+ PAT testers and PATGuard 3 testing software.

The Apollo 600+ is a compact and lightweight unit, which incorporates all the recommended safety tests for portable electrical appliances in line with the IET 5th Edition Code of Practice. These include point-to-point testing of fixed equipment and the testing of extension leads, power cords and RCDs. Barcode scanning The tester’s battery powered test capability also makes it suitable for completing testing at a range of locations, boasting practicality for organisations like ODS. In addition, by simply scanning barcodes of individual appliances, previously tested equipment is recognised immediately, automatically setting the required test sequences for that item and speeding up the whole process of asset recognition and testing.

The incorporation of a large internal memory supports data handling needs, allowing Philip to quickly upload test records and transfer them directly to a central database on a weekly basis to his PC. The use of these features is completed with the production of

important test certificates and reports to demonstrate full compliance with in-house safety management protocols.

Philip is also using the Seaward PAT testers as part of a wider asset management programme, currently recording inspections and checks carried out on the hundreds of ladders used by the ODS workforce on the Apollo 600+ before uploading the data to his PC. Indeed, he anticipates extending this activity to cover other health and safety kit such as fire extinguishers and first aid equipment He said: “Across our organisation, we use an array of electrical equipment and as part of our health and safety and equipment maintenance commitment, portable appliance testing is undertaken regularly and systematically.

“The testers are simple-to-use, which with such a large workload, makes the integration of testing with asset identification a lot quicker and easier to complete. The ability to maintain formal test records, which is essential in enabling us to work efficiently and effectively, is also much improved.

“We also benefit from good product support from Seaward. The company is responsive to our needs, ensuring that any technical queries and issues we might have are resolved quickly.”

VIEW THE APOLLO 600+ PRODUCT DEMONSTRATION VIDEO AT: WWW.RDR.LINK/EZ019

PROFESSIONAL ELECTRICIAN April 2021 51

052_PE_APR21_Layout 1 04/03/2021 00:48 Page 52

PRODUCTS & BUSINESS SOLUTIONS

A London university has had a smartphone-accessible DALI control system installed, allowing operators to independently manage the building’s lighting using an App. We learn more about the benefits of this approach.

DALI DRIVING

T

he University of Roehampton, in the Borough of Wandsworth, planned to redevelop the Sir David Bell Building on the Digby Stuart Campus with a target of remodelling and extending two adjacent buildings to consolidate and improve facilities for the Department of Media Culture & Languages.

This included the creation of specialist teaching areas including film, television and sound studios, a 90+ seat cinema, photographic studios, cutting/editing suites and a flexible creative project space for the University’s new digital media course.

University challenge The scheme was also designed to provide accommodation for university-wide students facing support facilities such as Academic Services, Audio Visual Resources, Digital Learning and IT Services.

Seminar rooms were created to promote collaborative learning through a variety of flexible layouts; supported by extensive social learning and ‘commons’ spaces, including the creation of a glazed courtyard.

As part of the project, the university appointed mechanical and electrical building services engineering company, Michael Jones & Associates, based in Reigate, to design a new lighting control

52 April 2021 PROFESSIONAL ELECTRICIAN

system, specifically for the Sir David Bell Building development.

The brief was that the university required a system which would enable staff to control lighting themselves with the added benefit of reducing energy usage. Typically, lighting can account for around 25% of a university’s energy costs. Nationwide lighting controls specialist, BEG Lighting Controls, was approached by Michael Jones to provide a user-friendly and flexible lighting control system to meet the university’s control criteria.

BEG proposed the BEG DALI-LINK system which offers flexible, scalable DALI lighting control and, because it's Bluetooth-enabled, it's easy to configure and change as room uses evolve – from changing scenes to adjusting the lights’ brightness. The DALI addressable system can be programmed simply and quickly using a smartphone and using the free-to-download BEG App. BEG Lighting Controls Specification Director, Tom Greenrod, said: “The controls system was mapped out and approved for use by the university in the majority of areas, such as teaching rooms, open plan

and cellular offices, seminar rooms, studios, computer labs and in the cinema/lecture theatre where occupancy detection and/or scene control was required.

“In the teaching rooms, the university required constant light level control with absence detection and a scene for presenting. This was achieved using a mains power supply and a DALI bus linking all of the luminaires, the DALI-LINK multi-sensor and a push button module.

This module was located behind a two-gang switch plate with two push to make retractive switches.

He continued: “One switch was used for absence and daylight linking and the second for a pre-set scene. The multi-sensor in this situation was used in absence mode but can also be used in presence mode or even work as a photocell. These changes are made to the settings via the BEG App. There's even an option for de-activating the

052_PE_APR21_Layout 1 04/03/2021 00:48 Page 53

multi-sensor, if required.

“The lecture theatre required six scenes and this was achieved using the Bluetooth push button module and a second non-Bluetooth module. Using a second push button module, the number of scenes available is increased to eight. A maximum of 16 scenes can be obtained using four modules.

“As the BEG DALI-LINK is an App-based system it's very easy to make changes to settings and store them. To protect these settings from sabotage, a pin code can be

set up to limit access to designated users.”

The DALI-LINK system can also provide orientation lighting to give some illumination to an area when it is unoccupied, avoiding unlit areas and providing a safe and secure environment.

There's also another option – the ‘Follow Me’ feature – where lighting will ramp up and down in relation to the movement of a person. This is beneficial in corridors and in stairwells to minimise the energy usage.

In the remaining areas where a less

flexible lighting control solution was required, BEG Lighting Controls used DALI broadcast sensors.

At the end of the project, a handover was carried out and training given to university staff by BEG specialists to ensure operators were fully aware of how to use the system and and how changes could be made if required.

VIEW THE BEG LIGHTING CONTROLS CATALOGUE AT: WWW.RDR.LINK/EZ020

054_PE_APR21_Layout 1 04/03/2021 00:50 Page 54

Products IN PRACTICE

Hamilton cleans up at Bath hotel Hamilton Litestat’s Hartland CFX wiring accessories have been chosen to equip Hotel Indigo Bath, a Grade One listed hotel featuring 166 bedrooms in the historic and vibrant Somerset city.

Mixing contemporary and traditional design with no two rooms the same, the hotel sought a range of decorative wiring accessories that offered modern conveniences and services to guests, but would be sympathetic to the building’s period features and complement the five different bedroom design themes.

Hamilton’s popular Hartland CFX plate was selected in antique brass with black inserts. Robust enough to meet the high wear and tear demands of the hotel industry, the design delivers a sophisticated look, while the antique brass finish gives the design a classic flair.

At the main entrance to each guest room, a Grid Fix 4-gang plate controls the master light switch, bathroom light and features two LEDIT-B100 rotary dimmers for softer lighting options. Beside each bed, dual switched sockets are equipped with two 2.4A USB-A Ultra charging outlets to provide easy and accessible charging functionality for smart devices. Positioned alongside is a 2-gang 2-way rocker switch plate to control the bedside lighting.

In the same design and finish, power is distributed throughout the rooms with 1-gang and 2-gang switched sockets. In the larger suites these are supported by a 4-gang aperture sheer floor plate housing dual USB-A charging outlets and an unswitched socket to provide further charging capability.

For those seeking the perfect wiring accessories for a project, Hamilton’s online product configurator allows easy searching and viewing of wiring accessories, available configurations and finishes. It also provides access to product information and data sheets that adhere to European Technical Information Model (ETIM) standards.

VIEW HAMILTON LITESTAT'S LATEST CATALOGUE AT: WWW.RDR.LINK/EZ021

54 April 2021 PROFESSIONAL ELECTRICIAN

054_PE_APR21_Layout 1 04/03/2021 00:50 Page 55

sponsored by www.electricalcharity.org

Leren before the Storm Luceco has recently supplied LED lighting for a cutting edge IT company, Storm Technologies, based in Watford. Established in 2000, Storm has grown from strength-to-strength delivering exceptional service to their corporate and public sector clients.

As a focused IT company, Storm wanted to be at the cutting-edge of lighting technology too, and selected Leren from Luceco due to its stylish appearance and technical performance.

With its sleek modern design and integral sensors with DALI dimmable drivers, the Leren fitted the brief and was approved by the client.

Offering both upward and downward light distribution to provide an enhanced overall lit environment, particularly where there are high or open ceiling voids to illuminate, Leren was suspended on 3 metre drops in order to meet the lighting requirements of Storm.

Supplied complete with adjustable wire suspensions, Leren benefits from through-wiring, including electrical connectors as standard, to assist with both standalone and continuous run installations. Accessories available include ceiling mount electrical connection rose and blanking modules in 600, 900, 1,200 and 1,500-mm lengths.

The installation was carried out by Clark Electrical & General, who are experts in the design and installation of LED lighting systems. Clark Electrical has provided maintenance and facilities management services to Storm Technologies for many years, recently assisting with Storm’s expansion programme including new warehousing, as well as the offices, administration and staff recreation facilities.

Available as fixed output, DALI dimmable, emergency back-up variants, PIR and LiteIP, Leren offers excellent photometric

performance and over 100,000 hours of maintenance-free, operational life with an efficacy of 120 Llm/cW, and three lumen outputs: 4,000, 5,200 and 7,500 lm.

To integrate with the SAS architectural ceiling area, Ricky Barnes, National Development Business Manager at Luceco, also helped to design and supply a modified 1200 x 300mm special recessed luminaire to complete the lighting programme.

VIEW THE LUCECO PRODUCT CATALOGUE AT: WWW.RDR.LINK/EZ022

PROFESSIONAL ELECTRICIAN April 2021 55

056_PE_APR21_Layout 1 04/03/2021 10:20 Page 56

Products round up

Smoothing the transition from 'A' to 'C' As mobile devices increase in capacity and become more power hungry, the new USB Type-C connector is set to replace Type-A over time.

To support this transition, MK Electric has unveiled its new USB Integrated Sockets as part of its Logic Plus range, designed to offer enhanced user experience, flexibility and safety, in one easy-to-install product. What's more, it's made right here in the UK. The newest Logic Plus USB Integrated Socket, available in white and graphite finishes, incorporates two USB ports – one Type-C, plus a USB-A port – with a total of 15W/3A across both outlets.

As USB type-C is smaller, reversible and capable of higher power charging, the inclusion of both USB port options gives installers and specifiers the ideal opportunity to deliver a solution that meets power requirements now, whilst being future-ready to embrace the rapidly growing adoption of USB-C. Helping increase charging efficiencies, the company’s USB integrated socket outlet also includes its Dynamic Device Recognition (DDR) technology. So, whatever device is being charged, it recognises the USB port as it would its own charger and draws current in the way that best suits its design to ensure optimal charging in the least amount of time.

With health front of mind in the current climate, Logic Plus is made using urea formaldehyde; a high-grade thermoset material that has anti-bacterial properties inherent in the actual compound of the product. In addition, the range is scratch-free thanks to 56 April 2021 PROFESSIONAL ELECTRICIAN

high quality mould tools, meaning there are no dirt traps for the bacteria to spread – another way to help optimise safety.

Maintaining the safety and quality you’d expect from the brand, the new Logic Plus incorporates a host of features that ensure it delivers on both aspects and widens business opportunities. For instance, if the total charging current exceeds the rate level of 3A, the device will enter a current limited safety mode, or under short circuit conditions, the output voltage will shut down completely.

Unlike many other USB sockets on the market, it incorporates double pole switching for added user safety, opening the door to specification for public buildings, such as those for the healthcare or education sectors where DP switching is frequently required as standard.

Remaining simple to install, the USB integrated socket from MK mounts into a standard 25mm back box, making it perfect for retrofit as well as new build projects in multiple applications including residential, commercial, education, hospitality and retail markets. It also features backed out and captive terminal screws and in-line, upward facing terminals with a funnel entrance for no-fuss installation.

GET FURTHER DETAILS ABOUT MK'S LOGIC PLUS USB INTEGRATED SOCKETS AT: WWW.RDR.LINK/EY023

056_PE_APR21_Layout 1 04/03/2021 10:20 Page 57

CED ELECTRICAL Meridian Self-Test Emergency Fittings The Meridian emergency lighting range is being bolstered by the addition of self-test versions. Whilst there’s more to come, products available now include 3W emergency bulkheads and exit panels. Both fittings have polycarbonate bodies and diffusers, are finished in white and deliver daylight colour temperature of 6000K. Fitted with SMD LEDs, they provide three hour emergency periods and have a 30,000 hour lifespan. The self-test bulkhead is IP65 rated for use inside or out and delivers an emergency output of 1.5W or 150 lumens, whilst the self-test exit box, rated as IP20 for inside use only, has a 1.0W or 100 lumens emergency output. With A+ energy rating and CE approvals, the range is backed with a three-year warranty.

GET MORE RANGE DETAILS AT: WWW.RDR.LINK/EZ024

SNICKERS WORKWEAR Hi-Vis Garments Snickers Workwear takes personal wellbeing at work very seriously. That's why this range of Hi-Vis protective wear is streets ahead of anything else. With updated styles and designs added to the extensive range of jackets, trousers, shorts, toolvests, shirts and fleeces for men and women, there’s a host of garments in the range to satisfy the specific requirements of Classes 1, 2 and 3 protection levels. These products combine Snickers' unrivalled hallmarks of functionality and comfort with the requirements of the EN20471 standard for high visibility warning clothes. With advanced designs and high-tech fabrics that are windproof and water-repellent, all the garments have durable, colour-fast protection that will last wash after wash, retaining shape and comfort throughout the life of the garments. Added to which, the Hi-Vis garments can be custom-profiled to ensure stand-out coverage for your corporate brand.

VIEW A DIGITAL CATALOGUE AT: WWW.RDR.LINK/EZ025

056_PE_APR21_Layout 1 04/03/2021 10:20 Page 58

Products round up

SPIT and Demon Cato are on a roll Are you looking to increase the productivity of your electrical installs on-site?

Combining SPIT’s Pulsa system and Demon Cato’s RollaTray could be the answer. When used together, the solutions help customers to dramatically reduce labour costs and increase productivity levels.

SPIT is committed to solving the pain points of its customers and to enable contractors to function more efficiently. When used together, the Pulsa system and RollaTray solutions are helping mechanical and electrical (M&E) contractors to reduce time spent on-site.

RollaTray is a cable management solution that offers an alternative to traditional cable tray, cable basket and cable matting systems, designed for optimum speed across all installations. The product minimises the requirement for on-site cutting and filing, reducing the need to acquire a hot works permit, which is sometimes required when using alternative metal channel systems.

SPIT Pulsa is a direct fastening system, replacing drilling and traditional methods with rapid, modern and clean fixing into concrete and steel substrates. This reduces exposure to dust and provides a cleaner safer working environment.

By combining these two solutions a contractor can gain significant increases to profitability and productivity levels.

What’s more, the system’s simple installation and flexibility makes it suitable for use across a wide range of projects. As a result, the solution is already turning heads and has been chosen by leading firms on a number of high-profile jobs.

58 April 2021 PROFESSIONAL ELECTRICIAN

The natural synergy between both solutions was recently underlined during a renovation project in Central Edinburgh, led by main contractor, Morris & Spottiswood.

For Andy Russell, Operations Manager at Morris & Spottiswood, choosing the collaborative systems was an obvious choice. He commented: “There are excellent benefits in using this system and it really made a difference to the project. Combining both technologies allowed us to reduce levels of dust, excess noise and HAV, which are all important modern health and safety considerations. Furthermore, the ease of transportation due to the system being so compact, was yet another great benefit”.

GET MORE DETAILS ABOUT THE SPIT PULSA SYSTEM AT: WWW.RDR.LINK/EZ026 GET MORE DETAILS ABOUT THE DEMON CATO ROLLATRAY AT: WWW.RDR.LINK/EZ027

056_PE_APR21_Layout 1 04/03/2021 10:21 Page 59

BRACKENHEATH CCT Plug-in PIR Floodlight range Brackenheath’s new CCT floodlight range with optional plug-in PIR sensor (sold separately), allows for a simplistic conversion from a standard to a PIR activated fitting. A CCT manual switch on the rear of the fitting allows unlimited switching between three colour temperatures (3000, 4000 & 5000K), providing flexibility to the installer and end user. Fully adjustable, the optional IP65 rated plug-in PIR sensor enables movement sideways and up and down for security 'blind spot' applications. The model comes complete with a unique extra-long angled bracket, which allows the standard and PIR units to be fully rotational. Also fitted with a swivel mounting bracket, the unit can be employed in a range of positions, while installers can benefit from an easy installation with a pre-wired push fit connector on the back of the fitting.

GET MORE PRODUCT DETAILS AT: WWW.RDR.LINK/EZ028

MEGGER MET1000 Multitester The Megger MET1000 has been designed specifically to meet the needs of professionals working on low-voltage industrial, commercial and domestic electrical installations. This compact multitester is ideal for making basic electrical measurements quickly, conveniently and safely. An important benefit of the MET1000 is that it has a replaceable lead set, so should the test leads ever be damaged, they can be replaced easily and inexpensively. Other key features include automatic polarity detection, automatic detection of AC and DC voltage, and a fast-response LED bar display that complements the main backlit digital display. These capabilities, together with its IP65 ingress protection rating, make the MET1000 a versatile go-anywhere instrument, while its CAT IV 600 V and CAT III 1000 V safety ratings, in line with IEC 61010, mean that it is suitable for use on any part of a low-voltage installation.

GET MORE PRODUCT DETAILS AT: WWW.RDR.LINK/EZ029

056_PE_APR21_Layout 1 04/03/2021 10:21 Page 60

Products round up

V-TAC launches upgraded B2B platform

The all-in-one, new and improved V-TAC website offers both account users and guests an easier way to check prices, stocks and product specifications for the entire V-TAC catalogue.

The website now features real-time inventory status, which can help users to curate their orders better as it shows which SKUs are on-hand and ready to be delivered. The website also features new products and 'back in stock' items to keep users up-to-date on new models, product variations, and bestsellers.

The ‘Find Your Local Wholesaler’ or the store locator option is still available, giving users the opportunity to find their nearest V-TAC stockists while RRPs (Recommended Retail Price) is a function that is available to all visitors.

The V-TAC product catalogue is now presented as per respective product group and variations (Watts, colour temperature, size, etc.), making it easier for users to compare all available models in a specific product range.

Multiple product images (product image, box image, 60 April 2021 PROFESSIONAL ELECTRICIAN

infographics, application images, etc.) for each SKU have been added, with a downloadable informative specs sheet for clients’ use and reference. Additional resources such as product manuals, certificates, and other relevant documents are also available in standard downloadable formats.

The website features a well explained and elaborative ‘How It Works’ section where users can get answers to product queries, customer sign-ups, and onboarding processes.

In addition to these upgraded features on the new website, V-TAC’s Relationship Managers are always hands-on and ready to help customers with any queries – whether that be assistance with product availabilities, finding alternate product offerings, or pricing for specific projects.

VISIT THE NEW AND IMPROVED V-TAC WEBSITE AT: WWW.RDR.LINK/EZ030

056_PE_APR21_Layout 1 04/03/2021 10:21 Page 61

PRIZE DRAW

SCHNEIDER ELECTRIC iPRD Surge Arresters The Type 1 surge arrester protects electrical installations against direct lightning strikes. It is used to conduct the direct lightning current, propagating from the earth conductor to the network conductors and is recommended for use in commercial and industrial buildings protected by a lightning conductor or by a meshed cage. The surge arrester base can be turned over to allow the phase/neutral/earth cables to enter through either the top or the bottom. It must be installed with an upstream disconnection device, such as a fuse or circuit-breaker, whose breaking capacity must be at least equal to the maximum prospective short-circuit current at the installation point. iPRD1 12.5r and PRD1 25r surge arresters also provide Type 2 protection by finely clipping the lightning wave overvoltages. These surge arresters are also fitted with a remote transfer contact to send ‘end-of-life indication’ information.

GET MORE PRODUCT DETAILS AT: WWW.RDR.LINK/EZ031

GIRA USB Power Supply Creating the ‘perfect home office’ has been given new meaning of late, so to meet this need Gira offers a range of stylish switches, easily adjustable lighting and smart, connected workstations that enhance how we use the home during business hours. Flexible and chic, the Gira USB power supply for smartphones allows users to charge their smartphone quickly by plugging the USB lead directly into the socket. Not only is the classic USB- A port compatible with most older devices, this power supply also easily accommodates the latest devices with its future-proof USBC slot. Thanks to a speedy charging function with a 3000 mAh, a smartphone, tablet and other devices can be up and running within minutes and, with two ports, you can charge two devices at the same time.

GET MORE PRODUCT DETAILS AT: WWW.RDR.LINK/EZ032

W IN

WIN A C.K MAGMA WHEELED RUCKSACK PLUS We have one of these superb new products to give away this month!

T

he new C.K Magma Wheeled Rucksack Plus (MA2654) offers the perfect tool storage solution for tradespeople who use public transport for travelling to work, or for those whose work involves accessing places where climbing and a hands-free approach is needed.

Lightweight and compact, the product combines all the fantastic features of C.K Magma’s rucksack tool storage products, together with the advantage of a durable wheeled chassis, with a telescopic handle for easy and convenient transporting of tools. It boasts a lightweight and compact design that cleverly incorporates a whole host of great benefits.

These include: a rugged and durable lightweight chassis, wheels and a telescopic handle for all-terrain use; a spacious main compartment; vertical storage pockets for easy tool access; 39 pockets and holders, including space in the base for larger tools; extra comfort padding at the back with storable shoulder strap; padded front storage pocket for iPad/notepad, additional hand tools and documents; and a removable wheel cover to protect clothing.

HOW TO ENTER TO ENTER THE FREE PRIZE DRAW TO WIN A C.K MAGMA WHEELED RUCKSACK PLUS, SIMPLY FILL OUT THE CONTACT FORM AT: WWW.RDR.LINK/EZ051 Deadline for entries: 10/05/2021. Usual T&Cs apply.

PROFESSIONAL ELECTRICIAN April 2021 61

056_PE_APR21_Layout 1 04/03/2021 10:22 Page 62

Products round up

DETA ELECTRICAL New Generation Dimmers

ESP Fire Alarm System Design Guide Keeping up-to-date with the latest regulations and standards that impact the work they do can be challenging for installers. With fire alarm system design in mind, ESP has produced a handy, pocket-size guide to highlight the key points of the latest version of BS5389 Part 1: 2017. This standard deals with the code of practice for the design, installation, commissioning and maintenance of fire detection and fire alarm systems in non-domestic premises.

ESP’s new guide is designed for those designers and installers that need simple guidance to the selection, spacing and location of fire devices. The 24-page colour booklet is highly visual and straightforward to follow. It covers the different categories of fire alarm and fire detection systems, plus the coverage and positioning for smoke detectors, heat detectors, manual call points, visual indication devices (VIDs) such as strobes and visual alarm devices (VADs).

DOWNLOAD THE GUIDE AT: WWW.RDR.LINK/EZ033

Deta has enhanced its dimmer range with the addition of two new dimming solutions to support a variety of applications. The universal dimmer offers an innovative new design that allows for multiway dimming from up to 20 locations using a G3506 'Push to Make' Gridswitch. Comptaible with leading and trailing LED lamps and with an increased load rating, Deta’s universal dimmer provides an advanced dimming solution. The product is now available in Vimark, Vimark Curve, Slimline, Slimline Décor, Slimline Screwless, Ultra Flatplate, Ultra Screwless and Gridswitch ranges. The second solution, the trailing edge dimmer, is an essential dimmer that offers on/off switching from a secondary location using a standard 2-way switch, providing a cost-effective installation and enhanced functionality. The product is now available in the Slimline range.

GET MORE PRODUCT DETAILS AT: WWW.RDR.LINK/EZ034

HELLBERG SAFETY Safety Eyewear Range Renowned for its hi-spec PPE that includes advanced hearing protection products, face protection and communication solutions, Hellberg Safety is launching a new range of safety eyewear. With a wide range of street-smart styles, from basic to premium, the new range ensures a consistently clear line of sight and safe vision for professional tradesmen and women, wherever they’re working on-site. Built with lightweight, durable materials and specially developed lens technology, the eyewear provides complete protection and comfort throughout the working day and can be easily combined with other PPE, including ear defenders, safety helmets, and visors.

With a focus on enhanced safety in all conditions, Hellberg glasses and goggles have impact-resistant lenses with anti-scratch and anti-fog coating on both sides. There's also styles that can be worn over prescription glasses.

GET MORE PRODUCT DETAILS AT: WWW.RDR.LINK/EZ035

RF SOLUTIONS FERRET Receiver The new RF FERRET is a 1-channel receiver, supplied ready to operate. The user simply connects a power supply, then connects the load to the relay output before setting their desired relay function. Small in size (21 x 76mm), it can fit comfortably in tight spaces. As a receiver, it provides a switching changeover contact to control an appliance via RF Control by receiving signals from a transmitter. Available on 868MHz frequency, the FERRET is compatible with the rest of RF Solutions’ 868 range. It can switch a relay up to 1Kw and receive an enormous range from up to 1km line of sight, depending on the transmitter paired. Supplied by a low voltage 6 to 24 VDC, with a MAINS 110 to 230VAC PSU add-on also available, this offers installers power flexibility.

The FERRET receiver is a perfect solution for electricians looking for an easy RF control add-on to switch lights, motors or pumps.

GET MORE PRODUCT DETAILS AT: WWW.RDR.LINK/EZ036

62 April 2021 PROFESSIONAL ELECTRICIAN

056_PE_APR21_Layout 1 04/03/2021 10:22 Page 63

C.K TOOLS Rescue Hex Key Set

EMMA Sustainable Safety Footwear Range

Forming part of C.K’s expanding ‘Rescue’ range of products, the new C.K Rescue Hex Key Set (T4440M) is the perfect companion when removing damaged or rounded hex bolts, providing a quick and easy solution for busy tradespeople, including those working in engineering or mechanical industries. Manufactured from hardened steel for strength and durability, this handy set is a real time and effort saver, designed to make a difference to what can sometimes become a difficult task. Product features include: the quick removal of damaged Hex fasteners, with up to 100% rounded heads; a multi-purpose design, which also installs new fasteners; and ball-ended for use at an angle of up to 25˚, where access is restricted. A wide range of sizes are available – 1.5, 2, 2.5, 3, 4, 5, 6, 8, and 10mm.

EMMA is a socially responsible brand that delivers a 100% circular footwear offering that is set to change the way professionals buy and use safety footwear.

Businesses from all industry sectors are making huge strides in sustainability and, as part of these efforts, many are embracing the circular economy and looking for opportunities to eliminate waste and find ways to continually use resources. That’s where EMMA steps in to be an active part of the corporate sustainability programme. Every piece of footwear in the EMMA range is made entirely from recycled or recyclable materials. They’re safe for the environment with a 100% ‘circular’ manufacturing, usage-mapping and recycling process for every shoe and boot produced under the EMMA brand.

GET MORE PRODUCT DETAILS AT: WWW.RDR.LINK/EZ037

GET MORE PRODUCT DETAILS AT: WWW.RDR.LINK/EZ038

064_PE_APR21_Layout 1 04/03/2021 00:56 Page 110

PROTECTING PEOPLE & PROPERTY

Conventional Convent tional Fire Systems Systems

Domestic Fire Systems Systems

Addressable Addressable Fire Systems Systems

Power Supplies S

Disabled RRefuge efuge SSystems ystems

Conventional Call Systems Systems

AAccessible ccessible Toilet Toilet Alarm Systems Systems

Addressable Addressable Call Systems Systems

Hearing Loop Systems

Established in 1981, C-TEC is a leading UK independent manufacturer of quality life safety electronic equipment.

Trading in over 70 countries and with product certifications and factory Trading ctory process approvals fro from dififfferent f yo life safety system requirements, Y o ou’re Safe with C-TEC. five different test bodies, whatever your You’re

c-tec.com

M

A

NU

GET MORE DETAILS ABOUT C-TEC’S PRODUCTS AT: WWW.RDR.LINK/EZ039 W Want ant to find out more about C-TEC’ C-TEC’s s produc products ts and services? Readerlink XXX

ER

A PROUD BRITISH

FA C T U

R

MANAGEM MANAGEMENT G ENT S SYSTEMS YSTEMS

Quality System Certificate No: 176 Assessed to ISO9001 : 2008

For in form ation on ou r

FREE

prod uc cour t training ses v isit

c-tec .com

065_PE_APR21_Layout 1 04/03/2021 00:59 Page 65

EV SPECIAL

POWERING AHEAD Amit Chopra, Head of Commercial e-Mobility at Schneider Electric, takes a look at the steps you can take to get ahead in the world of EV charge point installations.

e

-Mobility will be a key factor in achieving the target of a 45% reduction in global CO2 emissions by 2030. Electrifying transportation is an exciting yet monumental challenge, but it also presents an opportunity to create a sustainable ecosystem whereby electric vehicles open a pathway to put energy at the centre of consumer and business minds.

All indicators show we're moving in the right direction with the cost of batteries lower annually, along with vehicle manufacturers producing EVs with a driving range of over 300 miles.

Furthermore, existing transport infrastructure providers are investing in new strategies to support electrification with significant commitment to install thousands of charge points. Ultimately the benefits will come with the emergence of new services, which will not only make owning an electric vehicle cheaper but also a better all-round experience than we have with the combustible engine.

There's already a lot of information to digest on charging, so I’d recommend you consider the following important points along the way:

The company vehicle opportunity Businesses are starting to look at transferring their combustion fleets to electric with catalysts that include fuel saving, lower maintenance requirements and government incentives to procure

and operate. Company vehicles require a charging infrastructure not only at conventional depots and workplaces but also at residences for take-home fleet. It's important that businesses have continuity of service with minimal disruption to their operations when making this change.

Use smart and open technology Our energy transmission system is changing. The backbone in enabling the integration of new technology in the future is to use open sourced protocols and smart chargers now. Open charge point protocol (OCPP) would generally denote a system that supports interoperability in EV charging. By adopting open systems, we can ensure that as the technology evolves, chargers don't need to be replaced and the infrastructure remains aligned with key business drivers like sustainability.

Check existing supply There are numerous energy management systems (EMS) for charging, including active, dynamic, static and load/phase balancing. Today, there are two main functionalities that an EMS can provide: 1. Use an existing building load to automate the energy supply to charge EVs, 2. Manage charging at scale to ensure even distribution of electricity so EVs receive sufficient supply to meet the required mileage to drive.

Schneider Electric has innovated a load management system that provides a parking infrastructure with ultimate flexibility by actively managing existing loads on a site and distributing to vehicle chargers.

With an automated EMS, customers can install EV chargers without necessarily having to upgrade electrical supplies, and they can also maximise spare capacity whilst expanding installations over time.

Make the most of government support The most common starting point when entering the EV market is to become an OLEV approved installer. The UK government is supporting installations of up to 40 outlets with £350 per socket for workplaces and up to £350 per residential premises (some conditions apply).

Coupled with all the other points mentioned in this article, this really demonstrates why now is the right time to accelerate charging point installations.

FIND OUT MORE ABOUT BECOMING A SCHNEIDER EV LINK APPROVED INSTALLER AT: WWW.RDR.LINK/EZ040

PROFESSIONAL ELECTRICIAN April 2021 65

066_PE_APR21_Layout 1 04/03/2021 01:01 Page 66

EV SPECIAL

THE SURVEY SAYS...

Gary Alder, CEng MIET – BMBJV, Electrical Lead at Tideway, looks at why it is so important to undertake a proper site survey prior to installing EV charging stations.

I

n 2020, the National Grid stated that if every vehicle went electric overnight, there will be an increase of 10% to the nation's overall load consumption. This was caveated with a requirement that load management would need to be in place (see the article on page 74 for more details on 'load balancing'), but what other considerations need to be made for EV charger installations?

Start with a survey The key place to start is always the survey of a property or site. UK power networks have right of refusal for car charging installations. Applications, where increasing an installation over the 60A maximum demand threshold, are required in advance of completing any installations works.

Even where 60A maximum demand is not exceeded, approval is still required and can be completed within a notification

66 April 2021 PROFESSIONAL ELECTRICIAN

period of 28 days post-installation.

The application form will require information about the installation, such as installation incoming fuse details, voltage measurements and more. It is very worthwhile to ensure a thorough inspection in advance of quoting and completing installations, including verifying the condition of the consumer unit, protective devices, main bonding conductors – all day-to-day activities that electricians undertake anyway.

One of the major considerations will be the earthing system of the UKPN supply into the property. It is worth noting that within UK power networks earthing specification EDS006 B.4 states for all TN-S supplies to be considered TNC-S, due to concentric cables being utilised within UKPN’s network, not just the visible supply head in the property.

The next consideration would be the type of car and mode of charging that's

required. Typically, we expect to see a battery or hybrid car, but it's always worth checking manufacturer’s guidance and instructions if any specifics are required.

Dedicated circuits are a must, as mode 1 type of charging (utilisation of a non-dedicated circuit and socket outlet) is all but outlawed. Most chargers will operate in the 7.4kW load range with a mode 3 type of charging installation giving roughly a three to six-hour charge.

What other loads are in the property?

As mentioned previously, National Grid anticipates that most installations will utilise a form of load management. Whilst being a requirement for the office of low emission vehicles (OLEV) to provide energy management when receiving grants for installations, there is yet to be a formal requirement to do so.

Some EV charger manufacturers already include current transformers, providing the

066_PE_APR21_Layout 1 04/03/2021 01:01 Page 67

ability to stop the car charging during the utilisation of large loads within a property, such as an electric shower or oven. An alternative is load management distribution equipment (as seen in Garo distributon units, for example), which provides the same principle.

Selection of protective devices is always a key component to the installation. At the site survey stage, you may note that an existing AC residual current device is present, which won’t provide adequate protection for the new circuit you’re about to add, requiring the additional cost of an A type or B type device.

We then come back to the issue of earthing. Considerations should include assessing other circuits in the proximity of the charger and where the electric vehicle may be parking. You should also complete a simultaneous contact assessment.

There are ways of solving such issues, by utilising equipment such as isolating transformers. However, these can be quite clunky bits of kit that the consumer may be reluctant to have in the property. Most installations currently are utilising the O-PEN devices (under BS60255-1 for current sensing relays) to measure voltage disturbances between line and neutral.

Consider surge protection Where supplied from Henley blocks, due to some of the constraints listed previously, it is also worth considering a surge protection device, as it could be defined as a separate installation, as per the definition in BS7671.

The key considerations all lead to one point: no two installations are the same. As such, a thorough site survey can ensure you're well prepared for any eventuality.

In his spare time, Gary produces the Hit The Lights podcast, providing electricians with the chance to chew the fat about the latest issues and share stories from the trade. Follow the podcast on Twitter @HittheLightsPod

068_PE_APR21_Layout 1 04/03/2021 01:03 Page 68

EV SPECIAL

ELECTRIC VEHICLES AND SURGE PROTECTION Kirsty Johnson, Technical Sales Director at Surge Protection Devices, discusses the requirements for surge protection in EV charge point installations.

T

he electric vehicle market is on the increase, according to the society of motor manufacturers and traders (SMMT). In January 2020, 4,054 purely electric cars were registered, yet by January 2021 (despite the pandemic) this figure was 6,260.

This is purely sales of electric vehicles (not the hybrid variants), so the market is a growing sector with a 54.4% increase.

Traditional brand name car manufacturers now offer the ability to buy our favourite cars, in a more environmentally friendly design. We therefore have to consider the electrical implications of EV charger installation.

To successfully reach ambitious targets of reducing petrol cars and replacing them with electric, the public must be assured that they can charge their car when they’re out and about, meaning that

68 April 2021 PROFESSIONAL ELECTRICIAN

the continuity of service of EV equipment is a key aspect of EV chargers.

Every so often we all worry if we're going to make it to the petrol station in time, but can you imagine arriving at a service station only to find out the chargers are out of service and the next one is 20 miles away? Not ideal for consumer confidence.

To ensure the continuity of service, the installer must understand where issues can arise. From a surge protection point of view, electric vehicle charger installation should be carefully considered.

By their very nature, EV chargers are both sensitive (limited impulse withstand capacity) and exposed to overvoltage. In fact, quite a few EV charge point manufacturers will specify that an SPD should be installable or they’ll mention surge protection in the product’s warranty details.

“THE EFFECTS OF NEARBY LIGHTNING STRIKES ARE A RISK TO THE ELECTRICAL INSTALLATION, ALONG WITH THE EV CHARGER UNIT” Where is the risk of damage?

EV chargers are installed outside, therefore they're liable to experience the effects of nearby lightning strikes. There is an increased risk of the charger being damaged from the effects of lightning, if the installation has an external lightning protection system, or if the EV unit is supplied directly from the main incomer of a building fed by an overhead supply.

068_PE_APR21_Layout 1 04/03/2021 01:04 Page 69

Damage could also come from the installation, in the form of switching overvoltages. Overvoltages could also come from the supply network, or be created by equipment within the electrical installation. This form of repetitive overvoltage could damage the sensitive components used in EV chargers.

Also, EV chargers can cause issues with the electrical installation. We have to consider that any cable that enters an installation can bring with it the risk of overvoltage.

As mentioned previously, the effects of nearby lightning strikes are a risk to the electrical installation, along with the EV charger unit. Inverter technology can produce overvoltages, which can potentially cause damage to sensitive equipment inside the installation.

So, our risks are: a) Damage to the EV charger b) Damage to the car c) Damage to the electrical installation Using section 443 in BS 7671:2018 we can consider the requirements of SPDs. As a reminder, 443.4 states that: Protection against overvoltages shall be provided where the consequences caused by overvoltage could: i. result in serious injury to, or loss of, human life ii. result in interruption of public services and/or damage cultural heritage iii. result in interruption of commercial or industrial activity iv. affect a large number of co-located individuals The obvious starting place would be to consider the public service obligation. If an EV charger is for public use, then under 443.4, it should be protected by an SPD.

This ties in to the continuity of service. If an EV driver arrived at a service station to find that the chargers were out of use, that could cause severe interruption.

There's also the risk to life implication that must be considered if O-PEN technology is used. O-PEN devices are designed for use in installations where there is a PME earthing arrangement.

When the PEN conductor is broken, the neutral voltage can rise with respect to true earth and the normal protective earth forms the return path for any current that could flow. This could cause a car that is plugged in to charge to become live and, if contact was then made with the car, there is a danger of electric shock.

The O-PEN device notices the rise in voltage on the neutral and disconnects the supply to the car charger, should a fault occur. A number of EV charger units now rely on O-PEN technology to

disconnect the supply to the charger in the event of a fault.

If this technology is damaged, however, by the effects of lightning or some other form of overvoltage, the disconnection will not happen. In the event of a fault, this would mean that an electric shock could occur.

For all EV installations I'd recommend the use of an SPD, which is to protect the car charger itself, along with the installation. According to BS 7671, this will then become a ‘you shall’ install surge protection on installations where the charger is for public use, or O-PEN technology is used.

ACCESS SURGE PROTECTION DEVICES' FREE ONLINE CPD TRAINING AND SUPPORT AT: WWW.RDR.LINK/EZ041

PROFESSIONAL ELECTRICIAN April 2021 69

070_PE_APR21_Layout 1 04/03/2021 01:18 Page 70

EV SPECIAL

THE SEAL OF APPROVAL

With many different brands and quality of cables available to installers, the team at BASEC tell us more about why approved electric vehicle cables are vital for smart charging infrastructures.

A

s demand for electric vehicles and charging systems becomes ever greater, safeguarding the longevity of the cable is vital to ensuring safety once installed. The imminent surge in demand for electrified systems requires high quality cable products that can perform efficiently to satisfy operating demands.

Charging cable specific impacts EV cables themselves can be impacted by several factors, including installation, component failure, weather conditions, and even user damage. These are key challenges to ensuring that the cable products installed are safe and efficient for long term use within their infrastructure and can function as expected within demanding conditions.

Testing and certification of cable products is vital to minimising the risk of failure, resulting from the above factors.

Worldwide, there are two standards in existence in relation to EV charging cables, which work to reduce risk to safety. Within Europe, EN 50620 is most prevalent and

70 April 2021 PROFESSIONAL ELECTRICIAN

specifies design, dimension, and test requirements for halogen-free cables with voltage ratings up to 450/470 V. From a broad international perspective, the IEC 62893 series exists, which is comprised of several different parts and also specifies the construction, dimensions, and test requirements of EV charging cables.

Independent, third party testing and approval bodies, such as BASEC, undertake rigorous checks to assess an EV charging cable product's ability to meet the requirements of safety and quality in line with the standards.

Smart connection integration of charging units Smart charging systems are a relatively new technology developed to maximise efficiency within electric vehicle charging units. Commonly referred to as ‘intelligent charging’, they include a data connection which is shared between an electric vehicle and a charging device, allowing them to communicate with each other and the wider systems.

The smart system provides the

charging station owner the ability to closely manage how much energy to input into the EV. This helps to optimise energy consumption, ensuring the grid isn't overloaded at peak times.

Safe, reliable cables that have gained third party approval are vital to installed smart charging systems, confirming they're powered by high quality products.

The use of substandard cables can lead to electric current loading, based on the power output of the EV device or overall load requirements, and higher levels of conductor resistance. Generating excess heat can lead to problems, accelerating the deterioration of cables and impacting the EV system’s ability to perform efficiently.

EV charging point accessibility The accessibility of EV charging infrastructures on a nationwide scale is one of the biggest challenges the industry currently faces. As such, there is a huge risk of cable products entering the market that haven't been properly approved.

Cables that have gained independent, third party approval are able to prove that it performs sufficiently. This in turn helps to

070_PE_APR21_Layout 1 04/03/2021 01:18 Page 71

provide confidence to specifiers and installers that the cable has met the relevant quality, safety and performance requirements and that the claims of conformity made about a cable product, by the manufacturer, are valid.

Considerations for EV charging infrastructures Rapid developments around the globe are underway to launch new technologies in support of the widespread implementation of EVs and their charging infrastructures.

Power is being generated in new and sustainable ways to reduce impact on the environment.

Smart technologies are also being integrated, as they allow devices and multiple data systems to communicate with each other. Offering greater control over the transfer of power and maximising renewable energy generation efficiency, there are many benefits to smart monitoring, such as avoiding peak charging times and minimising charging costs.

To safeguard the implementation of EV charging infrastructures it's crucial that cables are thoroughly tested for quality and safety, whilst also ensuring they'll be reliable and efficient once in operation.

Comprehensive testing as part of an EV certification programme is designed to assess pressure, heat shock, ultraviolet resistance, water immersion, and flame retardance.

Each of these factors are closely monitored to determine a cable product’s performance under different circumstances, and in turn minimising the risks to those installing and using the cables in the end charging application.

Driving safe cabling practices With rapid growth of the EV market imminent, it's crucially important that government groups and industry professionals drive the adoption of safe cabling practices in line with the standards. Safe, reliable and interoperability of electric charging points should be a key priority, as should operational consistency, which is possible via rigorous testing programmes.

Cable products are an integral component of the smart charging system. Specification of BASEC approved cables enables you to safeguard the charging network infrastructures for the future.

WATCH A VIDEO SHOWING BASEC'S EV CABLE TESTING PROCESS AT: WWW.RDR.LINK/EZ042

072_PE_APR21_Layout 1 04/03/2021 01:22 Page 723

EV SPECIAL

WHAT'S BEST FOR THE TEST? Megger’s Peter Wade explains why installers will need to make sure they're properly equipped for testing EV charge points if they're to make the most of the business opportunity.

A

s would be expected, there are stringent requirements for the electrical protection built into charging points.

The basic requirements, prescribed by the IET Wiring Regulations, are that the charging point should be protected at the circuit source, or integrally in the charging point at the incoming supply position, by a Type A RCD/RCBO and that there should be provision for the supply to be disconnected automatically in the case of a DC fault current above 6 mA. Detailed requirements relating to EV charging points are contained in IEC 61851-1:2017, Electric vehicle conductive charging systems – Part 1: General requirements and IEC 60364-7-722:2018 Low-voltage electrical installations – Part 7-722: Requirements for special installations or locations – Supplies for electric vehicles.

The first steps Any contractor with the intention of tapping into the potentially lucrative EV charging point installation/testing market should, as their first step, ensure that they're fully up to speed with these requirements.

The second step should be to ensure that you have appropriate test equipment to confirm that the requirements are being met in practice. Testing will always be needed on newly installed charging points, and may also be required later as part of a routine inspection and test, or if a fault is suspected at any time.

Some modern multifunction installation testers, such as the Megger MFT1741+, have the necessary functions needed for

72 April 2021 PROFESSIONAL ELECTRICIAN

testing EV charging points, but they can't be used on their own to carry out the full range of tests. This is because, in order to test a charging point, it's necessary to simulate the connection of a vehicle.

Triggering the charging process In particular, the person carrying out the test must be able to trigger the charging process by supplying the charging point with the appropriate combination of proximity pilot (PP) and control pilot (CP) signals. To make this possible, and to facilitate the connection of the test equipment to the charge point, test equipment manufacturers have introduced adapters, such as the Megger EVCA210-UK, specifically designed for EV charging point testing.

In general these adapters are supplied with a Type 2 plug for charging points that have a tethered or panel mounted Type 2 socket outlet, which is by far the most common. However, some manufacturers also offer a Type 1 plug, such as the Megger EVCA210-UK, to cater for charging points with a Type 1 socket.

The most common vehicle requiring this would be the Mitsubishi PHEV. Be careful though, not all adapter manufacturers

include the Type 1 plug as standard!

Features that users should look for with an EV charging point adapter include selection switches for CP and PP state signal adjustment, push-buttons to simulate CP errors and earth faults to ensure that the output of the charging point is correctly and safely disconnected, as well as a manual PE pre-test. This ensures there are no dangerous voltages present on the PE conductor.

Provision for test instruments Finally, with single and three phase charging points available it is advantageous if the adaptor makes provision for test instruments to be connected using not only a mains socket, but also 4mm connection ports for L1, L2, L3, N, PE. Ideally, additional connection points should also be available for accessing the CP signal so that this can, if necessary, be monitored with an oscilloscope as an aid to fault finding.

The Megger EVCA210 incorporates all of the aforementioned features.

VIEW A MEGGER EVCA210 TECH DATA SHEET AT: WWW.RDR.LINK/EZ043

073_PE_APR21_Layout 1 04/03/2021 01:23 Page 79

EV PRODUCTS

IDENTIFY PROBLEMS WITH OLDER INSTALLATIONS

T

o deal with the issues associated with ageing of EVSE installations, Metrel has introduced a new EVSE adapter A 1532 XA. Speaking about the new introduction, Brendan Beaver, Manager of Metrel UK, said: “This new adapter allows you to identify three discrete error states in the communications between the charging vehicle and the supply equipment, CP short to PE, a protective earth open fault.

“It offers two unique features in the form of a diode short error state test and, most importantly, load testing up to 3 kVA per phase to confirm the CT is working accurately.”

He continues: “Like the basic EVSE adapter, this new adapter can run the full suite of tests automatically when used in combination with a multi-function tester like MI 3152 or MI 3155, and both store the results and produce the report. However, the A 1532 XA is better able to identify problems that may occur with an older installation.”

VIEW THE A 1532 XA PRODUCT DATA SHEET AT: WWW.RDR.LINK/EZ044

A COMPLETE TEST SEQUENCE - AT THE TOUCH OF A BUTTON

T

he EV-TEST100 has been developed by TIS to test the safety, performance and reliability of EV charging points. Furthermore, the unit has been designed to perform alongside the TIS MFT-PRO, which means you can have confidence that your results will be accurate and reliable.

The EV-TEST100 comes with a two-way optical data link cable which can be attached to the MFT-PRO to link the two and enable communication. The cable link-up enables the full auto sequence of testing and is done through the EV-TEST100 icon which now appears on the third page of the MFT-PRO front display screen.

You can set the testing sequence up as single phase or three phase, choose ventilated or non-ventilated charging pods and a current rating from 13A to 63A. For each test the screen shows you exactly where to put the test leads and tells you if the settings on the three dials on the front of the EV-TEST100 are correct.

The testing sequence then goes through a quick continuity test and an insulation test, checking the right charge is being sent to the vehicle before you engage it. You can then also carry out a loop & impedance test and an RCD test. Finally, you can simulate an earth fault and an electrical fault using one of the three dials on the front of the EV-TEST100 to ensure that no

charge is being delivered in those scenarios.

Purchasing these units as a combination kit – the TIS MFTPRO-EV – speeds up and simplifies the EV testing process, giving you a complete testing sequence with just one touch of a button.

VIEW THE TIS INTERACTIVE PRODUCT CATALOGUE AT: WWW.RDR.LINK/EZ045

PROFESSIONAL ELECTRICIAN April 2021 73

074_PE_APR21_Layout 1 04/03/2021 01:26 Page 74

EV SPECIAL

“A PROFESSIONAL AND CONVENIENT WAY TO LEARN”

Karl Weller of Heath Electrical takes a step up the EV installation ladder as he reviews the NICEIC online EV training course.

Q

Why were you interested in taking part in the NICEIC EV online training course?

We're very aware of the rise in demand for professionals with EV charge installation expertise, so its a specialism that we're keen to add to the business. As an individual, I also have a passion for cars and the way that technology in this industry is evolving, therefore taking part in any kind of training that can help improve my knowledge base in this area is something I've been keen to do for a while.

How did you find the process of accessing the training?

Q

It was really easy to get everything set up and ready, and was just a case of making sure that I was online and in the session a few minutes before it all started. Because the course was held remotely, it meant that I could take part from the comfort of my own work station at the office.

Had you undertaken an online training course before and how did you find the experience?

Q

I've taken part in a few training sessions before, but all have previously been in-person. Clearly the opportunities for face-to-face training are going to be limited for the foreseeable future, so it was great to get a taste for this alternative type of learning. I was

74 April 2021 PROFESSIONAL ELECTRICIAN

pleasantly surprised at how easy it all was to follow and clearly there are some massive benefits in terms of convenience etc. for this type of training.

How was the course information presented to you? Did you find it interesting?

Q

The material was delivered in a way, and at a speed, that made it very easy to keep up with everything. One initial concern about moving away from in-person training was that I thought the course may end up being 'death by PowerPoint', but that wasn't the case at all. Our tutor spoke clearly and concisely, was open to questions and feedback and made sure that every point was supported by diagrams and slides.

Interestingly, there's probably less disruption with this type of training as you don't have individuals losing concentration or chatting, which can sometimes be the case with class-based learning.

How long did the course last?

Give us a few examples of some subjects that were covered.

Q

The course was a (working) day in length and covered all the things that a potential new entrant to this market would need to know. This included items like legislation and the requirements of BS 7671 with regards to the changes to the section on electric vehicle charging, government incentives and connection to domestic

and commercial installations.

What happened at the end of the course? Did you get a certificate or proof of attendance?

Q

Once the course material had been presented to us, we were then asked to complete an online test/exam, which referenced the content we'd learned throughout the day. Once completed, we received a certificate to confirm that we'd attended and passed the exam.

Would you recommend the course to fellow electricians?

Q

Absolutely. Clearly there some potential downsides with online training, especially as you're in the lap of the gods at times in terms of internet connections and speeds. That said, this was a really convenient and professional way to learn, so I'd recommend that all electricians look into this course (and others) if they're looking to get into the world of EV installs.

In response to high demand and customer feedback, NICEIC is now offering weekend dates for the Virtual Classroom – Electric Vehicle Charging training course, providing even more flexibility.

GET MORE DETAILS AND BOOK YOUR PLACE ON A COURSE AT: WWW.RDR.LINK/EZ046

PE Page Grid_Layout 1 24/02/2021 09:57 Page 1

076_PE_APR21_Layout 1 04/03/2021 01:27 Page 76

EV SPECIAL

BALANCING THE LOAD Craig Slater, UK Sales Manager at CTEK E-mobility, explains more about the concept of loadbalancing and why its importance is only set to increase in the world of EV charging.

A

s the number of vehicles that require 'charging up' increases, focus will inevitably turn to the impact this could have on the National Grid, and how we can start to spread the load away from peak periods. As a result, load balancing is therefore becoming much more of a consideration in domestic, commercial and public EV charging networks.

Home installations CTEK recently undertook research amongst EV drivers that reveals the majority of people plug in when they get home from work, which of course coincides with the peak time for domestic energy use, as people prepare meals and

76 April 2021 PROFESSIONAL ELECTRICIAN

turn on the TV. By installing load-balancing into a domestic installation, you never have to worry about the main fuse tripping.

If you take the CTEK NANOGRID Home as an example, an additional energy meter is mounted at the incoming mains, which then communicates to the EV charger(s), ensuring that the house always has priority.

You could also consider specifying an EV charger with scheduling, which allows drivers to plug in and set their vehicles to charge during off-peak periods when energy demand in the house is low.

Commercial/public installations For larger installations with multiple EV chargers, load balancing becomes even more important. It will help to optimise the EV charging network and distribute

available power equally across all operational charge points, ensuring that EVs are charged as quickly as possible.

There are different ways to do this, and at CTEK we have two: NANOGRID Local: Load balancing is managed directly by an EV charger, configured as a 'master device' on the EV charger network.

NANOGRID CGC: This is a dedicated, standalone dynamic load-balancing solution that load balances and manages EV charging points, taking into account other demands on the local power grid to protect against system overload.

076_PE_APR21_Layout 1 04/03/2021 01:28 Page 77

“BY INSTALLING LOADBALANCING INTO A DOMESTIC INSTALLATION, YOU NEVER HAVE TO WORRY ABOUT THE MAIN FUSE TRIPPING.” Future-proofing When working with a customer to plan an EV charging network, you should look ahead to the future, especially with larger public/commercial installations. With EV adoption only set to increase, so will the number of EV chargers required for commercial and public parking spaces.

Make sure that any load-balancing solution can handle additional EV charging units to meet current, as well as future needs. The CTEK NANOGRID CGC, for example, can load-balance up to 500 charge points.

Skill up With new requirements for charging infrastructure, there also comes a need for increased training and education. The joint government/industry campaign Go Ultra Low is leading the way in this respect, providing a well presented, central source of information on electric vehicles and charging requirements, for consumers and installers alike. With more electric cars hitting the roads, the need to keep up-to-date with the latest charging technology will inevitably also increase.

THE PERFECT COMBO? LINIAN offers an ideal solution for EV charging installations with not one, but two innovative product ranges that can make the installer’s job easier: Earth Rod Pro: for rapid earth rod installation, SuperClips: for a neat and tidy fixing for conduit and cable.

What is the Earth Rod Pro? It’s a patent-pending solution that has two components. By attaching the driver at one end, and the sacrificial tip bit to the other, the Earth Rod Pro effectively turns an earth rod into one long drill bit which can rapidly bore through hard top layers and underground rock to achieve a secure earth rod connection.

Why use one?

When installing an EV charger, an earth rod can be the most efficient way to comply with Section 722 OF BS7671, 722.411.4.1 (ii). However, it can be a laborious process. This simple and effective solution saves the installer time and energy as it can be installed in under two minutes!

What are SuperClips?

These are single-component 18th Edition compliant cable fixings designed for conduit, armoured and grouped cables. To install, just drill a 10mm hole, slide the clip over the cable and push (or tap with a soft hammer) into the wall. It's that simple!

The future of sustainable transport lies with rechargeable vehicles, and we expect charging infrastructure to be at the forefront of development to support the government’s drive to phase out petrol and diesel vehicles.

Electricians and installers have a huge part to play in this exciting next step!

GET MORE DETAILS ABOUT CTEK'S RANGE OF CHARGING SOLUTIONS AT: WWW.RDR.LINK/EZ047

What are the benefits of SuperClips?

Installation of SWA cable must comply with BS7671, but a neat and tidy aesthetic is also essential as it’s clipped directly to the customer’s exterior walls and garages. SuperClips are available in a range of sizes and colours to match the conduit or SWA cable for a barely visible finish – ideal for EV installs.

CHECK OUT THE NEW LINIAN PRODUCT CATALOGUE AT: WWW.RDR.LINK/EZ048

PROFESSIONAL ELECTRICIAN April 2021 77

078_PE_APR21_Layout 1 04/03/2021 01:31 Page 78

EV SPECIAL

TAKE THE DRY ROAD

When it comes to EV charge points, there are a number of factors that can influence functionality and service life. Rolec discusses the importance of weather resistance and how electrical contractors and EV drivers can help to ensure wet weather doesn’t cause avoidable problems.

C

hoosing a charge point can be a difficult decision; factors such as aesthetics, power supply, and cost may all be considerations.

Few, however, will think twice about environmental protection.

After all, every charger is manufactured to meet stringent standards, of which weather resistance (IP) is just one.

The IP system is a sliding scale but one which isn't always widely understood.

Upon seeing an IP rating, many will simply assume the equipment is proofed against all levels of water ingress and won't consider that they may have their part to play in ensuring the equipment can continue to meet the standard.

To maintain the required level of water resistance, charge points should be installed with thought as to where the unit is placed.

For example, while the required IP standard tests units for a defined period of time, this doesn’t mean the unit will always withstand weeks on end under a leaking gutter.

Fortunately, we rarely see this level of

78 April 2021 PROFESSIONAL ELECTRICIAN

negligence; more common is innocent ignorance where an end user has used a pressure washer or, for convenience, has left their cable stretched out along the drive.

Gaps can cause problems Most cables, of course, come with a rubber dust cap to protect the open end of the plug, and for occasional short-term use this may be fine, but rubber is flexible and could wear over time or become misshaped if not fitted correctly. Any gaps will undoubtedly cause problems as the cap and plug retains water, leading the charge point to malfunction.

The best protection is most reliably achieved when the plug is properly connected to a vehicle and/or the charge point. Rolec’s tethered units, for example, come with a plug ‘holster’ (a blank socket) specifically for securing the plug to keep it free of damage and contamination.

So, how do electrical contractors and drivers prevent water damage to their charge points?

Rolec advises its electrical contractors and installers to coil the charge point cable around the cable tidy, ensuring there are no sharp bends or kinks and to store the plug in the plug holster.

The plug shouldn’t be subjected to contamination, whether that be through rainfall or dropping it into a puddle.

Avoiding water contamination will ensure the charge point’s functionality remains at its best, enabling hassle-free charging.

Follow the expert guidance If the electrical installer completes the installation of the charge point by following the method advised by the manufacturer (in this case Rolec), and stresses the importance of good cable storage and care to the end user, the charge point should withstand wet weather conditions for years to come.

VIEW THE ROLEC EV CHARGING CATALOGUE AT: WWW.RDR.LINK/EZ049

079_PE_APR21_Layout 1 04/03/2021 01:32 Page 73

EV SPECIAL

We catch up with Trevor Palmer, inventor of a revolutionary universal fitting system for the installation of EV chargers, to find out more about the inspiration behind EV Blocks.

NO MORE STUMBLING BLOCKS

w

ith nearly 500 charge point installations under their belts, the team at PB Solutions – Trevor's electrical contracting firm – came across multiple challenges whilst installing pedestal mounted EV charging points.

He recalls: "Not only are commercial electric charging points costly and time-consuming to install, but our customers were often facing major disruption during the installation process; holes need to be dug, cement mixed, poured and left to dry, and then stations finally installed. Further issues were caused by fixing arrangements changing from one charger model to another."

It was his learnings from the frustrating on-site experiences that inspired Trevor to create EV Blocks. Designed to provide a simple solution for installation and ongoing maintenance, EV Blocks support multiple different manufacturers' pedestal mounted EV chargers.

Using the (patent pending) universal adaptor plate for the blocks, installation of electric vehicle charging stations and the upgrading or servicing of the charging points is made much simpler because: a) The universal plate technology allows for projects to commence before the chargers have been specified or even selected – meaning blocks can be

installed for future-proofing installations at civil works stage. b) The installation ensures a uniform finish is ensured every time. c) The blocks can be installed in any weather condition, maximising efficiency and productivity. d) The uniform size and finish can be used with 50, 100 and 150mm cable ducting and allows for a change of direction at each block, if required. The blocks can also be used for cable pulling access. e) EV Blocks make changing charging stations much simpler – simply replace the adaptor plate and change the charger without having to re-work foundations. f) The blocks are suitable for local earthing with an earth rod within the block, or with an open PEN device.

Quotes from satisfied users include: “EV Blocks was simple, giving us a quick, clean finish and enabling us to de-couple the civil works from electrical works.”

“Quickly and accurately installed for flexible, easy cable pulling.”

FOUR REASONS TO USE EV BLOCKS 1. Universal plate technology The universal fitting allows projects to be started before the project has been specified or selected. The blocks can also be installed for future-proofing installations at civil-works stage.

2. Save time and reduce your carbon footprint on every install The innovative design can be used with ducting up to 150mm and allows for change of direction at each block, if required.

3. Commercial installation consistency This engineered solution ensures a uniform finish on every installation.

Blocks can be installed in any weather condition, maximising efficiency and productivity.

4. Uniform ultra strong platform Suitable for local earthing with an earth rod within the block, or with an open PEN device.

EV Blocks are made in Britain and are 100% recyclable.

WATCH A SUPPORTING VIDEO AT: WWW.RDR.LINK/EZ050

PROFESSIONAL ELECTRICIAN April 2021 79

080_PE_MAR21_Layout 1 04/03/2021 01:34 Page 72

CAUGHT ON

C A M E R A SOCIAL SNAPS!

! JAMES TOMLINSON: Spaghetti for dinner anyone?

! ROB WHYLES: I found this connection after a ceiling had been pulled down in a kitchen!

! DEAN WILKINSON: I was called out to a house that was experiencing flashing lights. We found several loose connections within a newly installed CU and this mess of cables above it.

! FLOW ELECTRICS: One short piece of tape covering each conductor in a bathroom light. This is why we do landlord safety checks...!

" JAMES AHMED: Today's find – a screw at the back of the consumer unit. Straight through the middle of the shower cable!

80 April 2021 PROFESSIONAL ELECTRICIAN

080_PE_MAR21_Layout 1 04/03/2021 01:34 Page 73

! RUFFTOOLS: Not only did it get a tad hot, it was also wired back-to-front!

" ALF: I found this while undertaking an EICR on a property in Manchester. ! STEVEN BATES: Called out to an office building in Swanley after staff reported a burning smell.

" JUICE ELECTRICAL SERVICES: As newly installed (by the ground worker, I'm guessing) on a new build home in Hailsham.

Just how are they getting away with it?

" MONTY ELECTRICS: Customer in a rental sent this over and asked if it was safe.

Water cooled switching to allow larger currents for switching maybe?

Get your regular fix of CAUGHT ON CAMERA! PE’s website includes weekly Caught on Camera ‘Exclusives’, featuring the best (and worst) of the shocking snaps that readers have posted to our Twitter, Facebook and Instagram pages. Don’t forget to tag us in on your tweets, or DM us your pictures and caption directly on Facebook, and you may just see your pictures featured on these pages or our site.

PROFESSIONAL ELECTRICIAN April 2021 81

082 PE APRIL 2021 INDEX_Layout 1 03/03/2021 09:19 Page 82

ADVERTISER INDEX Here is a useful summary of all the adverts that appear in this issue of Professional Electrician.

Each is listed with its page number and a direct URL that will get you straight to the relevant online information.

Bird Home Automation Group................................ Page 47

Metrel UK Ltd ............................................ Inside Back Cover

www.rdr.link/EZ100

www.rdr.link/EZ119

Carl Kammerling International Ltd........................ Page 59

Mr. Resistor .................................................................... Page 71

www.rdr.link/EZ101

www.rdr.link/EZ120

C-TEC Ltd ...................................................................... Page 53

NAPIT............................................................................... Page 31

www.rdr.link/EZ102

www.rdr.link/EZ121

DETA Electrical Company Ltd................................. Page 39

Niglon Ltd................................................................ Pages 10, 11

www.rdr.link/EZ103

www.rdr.link/EZ122

DETA Electrical Company Ltd................................. Page 57

Ovia Lighting ................................................................ Page 40

www.rdr.link/EZ104

www.rdr.link/EZ123

Electrical Contractors Association (ECA) ............ Page 37

Prefect Controls Ltd................................................... Page 63

www.rdr.link/EZ105

www.rdr.link/EZ124

Electrorad UK Ltd......................................................... Page 13

rdr.link.............................................................................. Page 71

www.rdr.link/EZ106

www.rdr.link/EZ125

Elite Security Products Ltd .................................. Pages 6, 7

Ring ................................................................................. Page 28

www.rdr.link/EZ107

www.rdr.link/EZ126

Elkay................................................................................ Page 45

Scolmore International Ltd...................................... Page 50

www.rdr.link/EZ108

www.rdr.link/EZ127

Forum Lighting Solutions......................................... Page 20

Seaward Electronic Ltd .............................................. Page 41

www.rdr.link/EZ109

www.rdr.link/EZ128

FS Cables Ltd ................................................................ Page 71

Selectric .......................................................................... Page 21

www.rdr.link/EZ110

www.rdr.link/EZ129

Gira .................................................................................. Page 33

Tesco Mobile Ltd ........................................................... Page 4

www.rdr.link/EZ111

www.rdr.link/EZ130

Hamilton Litestat......................................................... Page 27

Test Instrument Solutions Ltd ............. Inside Front Cover

www.rdr.link/EZ112

www.rdr.link/EZ131

Honeywell ........................................................................ Page 8

Timeguard Ltd.............................................................. Page 42

www.rdr.link/EZ113

www.rdr.link/EZ132

IDEAL INDUSTRIES EMEA ....................................... Page 24

TRADE-DOCS ............................................................... Page 45

www.rdr.link/EZ114

www.rdr.link/EZ133

LEDVANCE Ltd ............................................................ Page 50

Tungsram Group ......................................................... Page 49

www.rdr.link/EZ115

www.rdr.link/EZ134

LINIAN Supply Co. Ltd............................................... Page 67

Volkswagen Commercial Vehicles .... Pages 15, 16, 17, 18

www.rdr.link/EZ116

www.rdr.link/EZ135

Manrose Manufacturing ........................................... Page 63

V-TAC UK Ltd......................................... Outside Back Cover

www.rdr.link/EZ117

www.rdr.link/EZ136

Megger Ltd.................................................................... Page 75

Zzeus Training Ltd...................................................... Page 38

www.rdr.link/EZ118

www.rdr.link/EZ137

PE Page Grid_Layout 1 01/04/2019 12:30 Page 1

PE Page Grid_Layout 1 24/02/2021 10:29 Page 1