Professional Electrician & Installer May 2024

Many electrical professionals work alone, or as part of a small team, and although the majority of the time training and experience is enough to solve the everyday conundrums present in many jobs, at times even the most highly skilled tradespeople can use a bit of a hand

Within this industry there are a variety of sources that electricians and contractors can turn to. Fellow sparks are often a rich source of help and support, industry bodies and associations can provide members with assistance, while product manufacturers often have technical helplines to call, if specific product advice is needed

One area that has grown over the past few years is the breadth of online resources that manufacturers are making available to installers. While these often feature the more traditional data sheets, technical specifications and fitting guides, they are increasingly being supplemented by videos, blogs, podcasts and more

Many manufacturers also have online hubs or academies, or similar initiatives, which installers can join to access a company’s online training courses, webinars or wider technical content.

Recognising that many tradespeople continue to value face-to-face or ‘inperson' training, manufacturers are also offering courses at locations across the country Some also have demonstration vehicles that deliver small group training or product updates even closer to installers

Of course, just keeping up-to-speed on what is ‘out there’ can be a challenge during a busy working week, but that is where PE can help. Both in print and online – and alongside all the feature stories and product updates –we’ll keep you in touch with the latest training opportunities, new product

launches from manufacturers and any new initiatives they’re introducing.

Speaking of

new initiatives…

On that subject, we’re pleased to report that a new industry collaboration has been announced recently, with the joint aim of increasing awareness and understanding around the importance of safe isolation.

It’s pretty scandalous to think that, on average, one trades professional is killed every month due to accidents caused by working with electricity onsite, especially when the guidance is perfectly clear about the need for safe isolation and the best practice procedures behind it

That temptation to cut corners, take a chance or save time (and money) could have consequences that no one could put a price on, so our industry has a collective responsibility to ensure that its custodians are educated, aware and supported in this area

Fortunately, we’re a sector that’s blessed with companies and individuals who are prepared to put their own interests to one side and work together for the greater good – all in the interest of ensuring that individuals can walk through the door to their loved ones at the end of a normal working day.

You can find out more about the group’s members, goals and future plans in this month’s issue (starts on page 21)

Have a good month, and we’ll look forward to seeing some of you in a few weeks’ time at ELEX Harrogate.

Industry welcomes PM’s pledge on apprenticeships

ECA has broadly welcomed the recent pledge by Prime Minister, Rishi Sunak to create up to 20,000 more apprenticeships with a series of reforms to funding and bureaucracy.

While ECA welcomes the removal of the co-funding requirement for SMEs recruiting apprentices aged 21 or under, the association says the resultant saving of just £2,000 over four years isn't likely to sway many more small electrical contracting firms into shouldering the much greater financial and administrative responsibilities currently imposed on employers

Additionally, as an industry which is largely male dominated, ECA recognises the need to increase diversity in the workforce, calling on the PM’s new industry-led taskforce to recognise the challenges of boosting gender diversity in SME dominated industries essential to the UK’s net zero and digital transformation, including the rapidly expanding electrical contracting sector

ECA Chief Operating Officer, Andrew Eldred, said: “99 8% of electrical contracting firms are SMEs ECA has been calling on government for some time to offer better targeted support, especially to

small and micro businesses, to help reduce the various bureaucratic and financial disincentives currently discouraging them from employing more apprentices.

“We have consistently made the point directly to parliamentarians and through representative bodies such as the CBI and FSB, that SMEs need a range of support to encourage more to recruit and train.”

For the last several quarters, survey data for the engineering services sector, which includes electrical contracting, has shown that shortages of qualified staff are the top commercial issue of concern to business owners, holding back growth

Andrew added: “Properly addressing the UK’s long-running shortage of qualified electricians necessitates looking at extra incentives for employers to take on not just recent school-leavers, but also career changers, women returning to

work, and other older individuals who have not yet completed their qualifications.

“Experienced Worker Assessments and NVQs for adult learners are among the fastest way to increase the skilled workforce, yet in England these courses almost invariably have to be paid for by individuals or their employers This is a missed opportunity to boost the size and diversity of the workforce With the rapidly growing electrification of the UK, we are in a race against time ”

Schneider ‘activates’ Acti9 competition

UK contractors can get ready to win big with the latest promotion from Schneider Electric.

As part of the ACTIVATE YOUR ENERGY promotion, contractors who purchase a Schneider Electric Acti9 Active PhN distribution board from their local participating electrical wholesaler will stand a chance to win incredible prizes for their business, including:

l 1 x tour of Schneider Electric’s Grenoble headquarters facilities for two employees from the winning company (four to be won) This includes return flights, one night’s accommodation, airport transfer etc

l 1 x Sustainability audit carried out by Schneider Electric (one to be won)

l 1 x £500 Virgin Experience Day gift card (four to be won)

l 4 x EV-link chargepoints for your business (one to be won)

l 1 x £50 Sports Direct e-gift card (50 to be won)

What’s more, every first-time entry gets a complementary £10 Greggs e-gift card, so everyone’s a winner!

Entering the promotion is simple –contractors can participate by scanning the promotional QR code found on the product packaging of their Acti9 distribution board The QR code will take customers through to a webpage where they can enter their details to participate in the main prize draw, with the winners announced in June.

‘Powerhouse’ EV charging collaboration announced

Sevadis has announced that it is joining forces with BAM Charging Solutions –a division of BAM – to form a powerhouse collaboration in supporting the future of electrification.

The partnership is set to provide seamless AC and DC charging solutions to BAM’s existing and prospective customers, expand the Sevadis network of EV charging points and reinforce businesses’ pathways to achieve their net-zero objectives.

As part of BAM’s wider sustainability plan, the company has recently built a brand new state-of-the-art eco headquarters in Kilsyth, near Glasgow. This has been completed with a range of

Sevadis EV charging solutions

The firm opted for 32 MaxiChargers with LCD screens in 16 custom pillars with contactless card readers. These provide drivers with convenient charging sessions that can be activated without the requirement of an App Additionally, a 100 kW MaxiCharger DC Fast charging station was also deployed on-site to enable rapid charging

By combining their expertise and resources, the two companies are set to make a substantial impact on the EV charging landscape The MaxiCharger is known for its 99% reliability rate and, when combined with BAM’s high-level

design and installation skills, the partnership will provide a smooth and trouble-free EV charging experience for businesses and consumers alike

Electrical sector calls for safer public EV chargepoints Luceco makes a bee-line for D-Line

Although ECA has shown its support for the government’s desire to increase the number of public EV chargepoints, the current approach poses serious concerns about electrical safety in the public domain.

A Freedom of Information request by ECA in 2022 found that two thirds (66%) of local authorities either did not have any strategy for EVCP installation or if they did, it failed to mention safety

Jane Dawson, ECA Head of Public Affairs, said: “Installing electrical technology, including EVCPs, can be complex and dangerous, with the potential for endangering lives through fire, electric shock or grid outage

“EVCP Installers without adequate training don’t have the level of competence required in other areas of construction Training courses for local authorities must include installation considerations such as safety and competence.”

ECA, which represents nearly 3,000 electrotechnical and engineering services businesses across England, Wales and Northern Ireland, says the fastest way to speed up EVCP installations, and make the most of public monies, is for government to fund industry recognised upskilling courses such as those with an Electrician Plus Kitemark

It is 20 years since D-Line’s start-up was inspired by an aim to satisfy the demand for design-led trunking systems While staying loyal to a design ethos that its products must always be ‘quick to install, look great!’ over the years, D-Line has launched many ranges of innovative cable management solutions

Now D-Line mini-trunking, fire-rated cable supports, cable organisers and floor cable covers are used every day in installations around the world The business has won three Queens Awards, for Innovation and Export achievements, and last year saw cumulative D-Line sales top £100m

D-Line Founder, Paul Ruddick, commented: “D-Line is proud to have developed a trusted brand and leading ranges, with a great distribution network We also have strong momentum for progress moving forwards.

“Joining Luceco gives fantastic new opportunities, as we look forward to exploiting the strong synergies between us; including a focus on delivering further innovation in categories where we have complementary products.”

Luceco’s bright ideas for cancer support

Staff members at Luceco put their best fundraising ideas forward recently when they welcomed Macmillan Cancer Support.

Macmillan Regional Fundraising Manager, Kate Thomas, joined employees at their Telford office where she teamed up with Will Hoy, Chief Financial Officer at Luceco Group, to discuss ideas for the company’s fundraising future

The charity, chosen by employees to support throughout 2024, heard a multitude of ideas – from lighting up the Wrekin to coffee morning bake-off competitions, walks, runs, bike rides, and even getting on the water to take part in

the Coracle World Championships, a huge corporate event which takes place on the River Seven in Shropshire

Will Hoy, Chief Financial Officer at Luceco, said: “After announcing Macmillan as Luceco’s charity partner for 2024, staff across the company have been eager to start fundraising and have come up with lots of great ideas to help us reach our goal As the majority of Macmillan’s work is funded by donations, we understand

how important our fundraising efforts are to help this charity do incredible work ”

JTL donates £5,000 to support youngsters

JTL has announced the donation of £5,000 to the top three community projects chosen by its workforce.

The winning organisations include Leeds United Girls Academy U14s, Bottesford Belles U9 Football Team, and Dance and Cheer-a-cality (DCA)

JTL employees nominated and voted on the winning projects, reflecting the company's commitment to supporting community initiatives, particularly those related to younger adults.

Receiving 28% of JTL’s staff votes, Leeds United Girls Academy U14s were ranked first of seven projects nominated. The talented team of young women at Leeds United include aspiring potential apprentices and professional footballers.

With JTL’s donation, expenditures around equipment, travel and other essentials, which are currently self-funded, will be eased significantly

Bottesford Belles U9 Football Team, a Lincolnshire-based club which focuses on breaking down barriers for girls' access to football, achieved second place with 23% of JTL’s votes

Finally, Dance and Cheer-a-cality (DCA) received 20% of the votes and a donation that will go towards helping to equip over 200 young people in Hampshire with valuable life skills through sport, dance and cheerleading.

JTL will be following up with each organisation later in the year to see how the funding has contributed towards these projects

Fergus releases contractor case study video

E&P Electrics (Bedale) are the stars of a new video showing how Fergus job management software has helped them to run their business more efficiently.

Based in the picturesque countryside of North Yorkshire, E&P Electrics (Bedale) is an NICEIC Approved Contractor known for its dedication to quality and service across the region. The video, available on the Fergus YouTube channel, will help other trade businesses understand the benefit of job management software from a business owner’s perspective

Lindsay Peacock, a key figure at the company, shares her thoughts on how Fergus has helped the business: “Before Fergus, we were drowning in paperwork

Every job was a manual process from sorting to invoicing, a cycle that consumed our evenings and risked important details being lost

“It's saved us so much time, we're more proficient in the office, invoices are dispatched quicker and timesheets are completed with ease It's like we've discovered a new way of working that we never thought possible ”

She recalls: “Everyone received training from Fergus, which set us off on the right foot It's not just software; it's a new way of running our business We're more efficient, more connected, and ultimately, we're able to serve our customers better ”

Earn 5 x CPD credits with PE’s second CPD Book Drayton hosts heat pumps panel

Professional Electrician & Installer has launched the second edition of a new, online-only publication, which offers industry professionals the opportunity to earn 5 x CPD credits, or the equivalent of five hours’ learning/reading time.

Introduced at the beginning of last year, the regular PE ‘CPD Zone’ section (starts on page 29 in this issue) contains content and articles from leading industry authorities and contributors that are collectively deemed worthy of CPD recognition Accredited by The CPD Group, ‘The CPD Zone’ has proved a big hit since launch with hundreds of readers downloading a bespoke, personalised certificate of proof in every issue

This book wraps up the content from the last five ‘CPD Zone’ sections of 2023 to offer professionals a valuable 92-page resource.

The CPD Book: Volume Two 2023 is free to access and is available now on the PE website You can also request a download link while you’re there

At the end of last month, Drayton welcomed industry experts including Richard Burrows, Kimbo Betty, Damon Blakemore and more to The Drayton Community to discuss the transition of becoming a heat pump installer As well as sharing advice and tips for anyone looking to upskill in the near future, they also shared their personal experiences and how they found making the switch

Throughout May there will be further expert panel sessions digging deeper into the topic, exploring key themes and questions raised by members of The Drayton Community in the comments and from the Q&As

Clare Weller, Trade Marketing Manager at Drayton, commented:

“With consumer demand for heat pumps continually growing, we’re seeing more installers begin to explore upskilling and expanding their businesses to include renewable installations We’re here to support professionals along the way, and with our industry expert guest speakers, we hope to provide them with the information and guidance needed to take that step ”

introducing THE ULTIMATE TOOL FOR ELECTRICAL INSTALLERS!

Following the launch of the ground-breaking LumXpert App for professional installers, the team at Signify provide more details about its many features and benefits and why modern technology is helping electricians to take their offering to a higher level.

In today’s technologically advanced and ever-evolving world, electricians are on a constant look-out for tools that can make their work more efficient and convenient

The 2000s have seen a surge in mobile applications designed specifically for electricians working in the UK These Apps cater to various needs such as project management, calculations, and electrical planning, becoming an essential

part of a modern electrician’s toolkit.

Be it a scenario of installing lighting in an office space or warehouse or simply replacing the lights in a facility, a job like this can come with a myriad of challenges – whether that’s finding the right products or the best partner to supply these products, putting an accurate quote in place, or even getting the installation right as per specific workspace regulations and requirements

Moreso, as an electrician in the UK, you know that keeping up with the latest technology can be a challenge. Keeping abreast of the latest trends and striving for continuous improvement, the electrical industry and its need for Apps is no different than what’s seen in any other sector

These Apps must offer utility, features, tools, and tailored services designed to save time throughout a

working day. The Apps must also provide the required support when it's needed most

How can App technology help?

Market studies show that ordering online, either through traditional wholesalers, marketplace, or new online pure players, is increasing. The trends also show that:

Working on the go

Electricians are always on the move, working at various job sites or in different locations With a mobile App, they can carry a comprehensive toolkit in their pocket, eliminating the need to lug around bulky manuals, reference materials, or physical tools

The convenience of accessing critical information, such as electrical codes, wiring diagrams, or calculators, from a mobile device saves time and effort, allowing users to focus on the task at hand.

Staying up-to-date on the latest trends and regulations

Electrical codes and standards continuously evolve, and electricians must stay current with the latest regulations. Mobile Apps that offer code references and updates ensure that electricians have instant access to the most up-to-date data.

This access to real-time information helps electricians make informed decisions, ensure compliance, and maintain high standards of safety and quality.

Handy for electrical jobs

Leading their companies and running daily operations, electricians have a busy day with a diverse range of tasks –from finding customers to purchasing equipment to installation, invoicing, and after-sales service. While they’re a super-skilled workforce, having a companion like Signify LumXpert can make the job easy while on the go.

Introducing Signify LumXpert

Signify, the manufacturer of Philips Lighting, strongly believes in supporting the personal and professional growth of the electrician and installer community.

To do this, it provides training and upskilling on a wide range of topics, innovative solutions to create new business opportunities, as well as keeping professional installers up-to-date with industry regulations and new trends and technologies.

Built on many years of industry collaboration, LumXpert is the new specialised marketplace in lighting,

developed for, and with, small and medium-sized installation companies to allow them to create fast quotes, compare prices and availability, order products from wholesalers, design and expand their lighting expertise.

Constantly creating possibilities

The purpose of the App is to constantly create possibilities for installers to make their jobs easier, faster, and simpler.

It offers installers instant quotes from multiple wholesalers, based on project and product details, with a simplified purchasing process directly within the App. This enables users to buy from associated wholesalers with transparent information on prices and availability.

THE IDEAL ALL-IN-ONE TOOL

● Quickly find the right products for your lighting job through the extensive Philips portfolio of LED lamps, tubes, luminaires, and more.

● Compare prices, check product availability, and get immediate quotes across multiple wholesalers with your LumXpert account.

● Buy and track your order and delivery status, receiving it in a maximum of 48 hours.

● Create simple light plans based on projects, download them, and share them with your customer.

● Get direct access to Signify’s lighting experts and customer service.

Additionally, installers will have access to exclusive financing options.

Nico van der Merwe, Commercial Leader Professional Europe West, said: “Today, 96% of installers seek information online, juggling search engines and manufacturer and wholesaler websites.

“Signify LumXpert provides them with the products and information they need, along with specialised tools and support to help them take their business and customer experience to the next level."

The tools of the trade for a modern-day electrician are now much more than pliers, screwdrivers, wire strippers, and power drills. Today’s electrical expert uses technology to help get the job done more efficiently. Your smartphone holds the key to everything –from making calculations to invoicing clients.

While Apps won’t take the place of professional knowledge, Signify LumXpert can provide the means to make an individual’s working life easier.

GET 15% OFF PHILIPS PRODUCTS!

LumXpert is available through the App and Google Play Stores. Scan the QR code to download the App and you’ll get a 15% discount on your first purchase of Philips products.

AVOIDING AM2 ANXIETY: PART 2

In the latest in a new series of regular articles, Pete (Monty) Monfort, Director of Arena Training Centre and Monty Electrics, offers some hints and tips to help you prepare for the AM2 assessment.

In last month’s article we considered the process of booking and preparing for your AM2 This month’s column will now take a look at what happens on test day

Assessment day

You’ll want to give a good account of yourself, so be prepared Get an early night, pack a lunch the night before, plan your route and give yourself time for traffic delays If you’re travelling a long distance you might opt to book a hotel near to your test centre

You should arrive dressed for the job –comfortable work clothing and safety work boots are essential. Your assessor will also need to see identification so you must take some form of photographic ID, such as a driving licence, passport or ECS card

You’ll not be permitted to take in electronic equipment such as smartphones, cameras and the like, so you’ll be asked to hand these in at your chosen AM2 centre You are, however, permitted to take in insulated side cutters, wire strippers and pliers only, but they must be in good safe working order. Everything else is provided by the centre.

On arrival at the test centre you’ll meet the assessor and will be given an induction You’ll also be provided with the assessment manual which you MUST read carefully

I can’t stress enough how important this document is It provides clear instructions on what you need to do and includes diagrams and associated information required to complete the assessment The manual is always available so check back regularly

During the assessment

Work methodically and efficiently You’ll be provided with regular breaks so you can always gather your thoughts over a coffee and if you’ve made mistakes you can

action them and correct them In fact, you’ll inspect and test your own installation and, if you find faults, get on and fix them just like you would in your day job

After the assessment

Once completed, your assessor will indicate when you might expect your results – this can take up to five working days. Hopefully you’ll have been successful, but if you haven’t passed don’t be disheartened – it simply means you need to brush up on some skills that you failed to show competence in

Since 1st April 2021 the installation section has also been broken down into sections, so if you failed one aspect you’ll not have to re-sit the entire installation section again, saving both time and money in the long run

Remember, you only have two years to re-sit failed components, after which time you would have to sit the entire assessment again

Embrace the challenge

The End Point Assessment is challenging, but it is there to ultimately assess your competence in the industry sector The electrotechnical sector is an ever-growing and complex environment to work in and

the assessment process is, quite rightly, a rigorous one

On completion of the AM2 you should be proud of your achievements but be mindful that it is just one step on a fascinating journey of learning, and it probably won’t be long before you’re considering what’s next for you on this career path.

Keep reading the IET books and be confident in your capabilities and capacity to progress

SAFETY IN NUMBERS

W i t h s t a t i s t i c s s h o w i n g t h a t o n e t r a d e p r o f e s s i o n a l p e r m o n t h i s k i l l e d o n a v e r a g e a s a r e s u l t o f w o r k i n g w i t h e l e c t r i c i t y o n - s i t e , w e l e a r n m o r e a b o u t h o w a c o l l a b o r a t i v e i n d u s t r y g r o u p i s w o r k i n g t o g e t h e r t o e n s u r e t h a t i n d i v i d u a l s a n d b u s i n e s s e s u n d e r s t a n d t h e i m p o r t a n c e o f, a n d b e s t p r a c t i c e b e h i n d , s a f e i s o l a t i o n i n t h e w o r k p l a c e .

Michael Adamson was a 26-year-old experienced electrician who tragically died in a preventable electrical incident in 2005. He cut a cable marked ‘NOT IN USE’, which was in fact wired into a distribution board and was not safely isolated

Michael’s sister, Louise, now travels around the world speaking to organisations and conferences and was recognised in 2018 as the ‘Most Influential Person in Health & Safety in the UK’ by The Safety and Health Practitioner.

She explains: “I’ve made it my goal to tell Michael’s Story because he isn’t here to tell it himself Michael was young, engaged to be married and had his whole life still ahead of him, when he left home one morning and didn’t return He died in an entirely preventable electrical incident

“There were many failings in health and safety leadership, culture, processes

“The goal of this campaign is simple –to drastically reduce avoidable accidents for electricians and other contractors working on-site.”

and practices which resulted in my wee brother’s death, so the aim is to stop this from happening to any individual or family again ”

Louise adds: “Attitudes towards safe working practices in the electrical industry desperately need to change, and it’s shocking to hear that so many installers’ lives are being gambled with through non-supply or use of vital equipment

“You want the people working for you, or with you, to go home safe and sound to their loved ones at the end of each and every working day, night or assignment ”

Spreading the message further

Of the many hundreds of individuals who have now heard Louise tell her brother’s story, one was so touched (and shocked) by the detail in the presentation that he has made it somewhat of a personal mission to ensure that the message reaches the widest possible audience and that the importance of its sentiments are never lost nor forgotten.

Since listening to Louise recount the events of her brother's final day, Malcolm Duncan, MD of Super Rod, has spent a huge amount of time and effort generating awareness, undertaking industry research and creating content that can help to deliver the safe isolation message in the most effective way possible

He says: “As soon as I heard Louise tell

her story, I knew it was something we had to support to help her raise awareness We didn’t know how widespread the issues of non-compliance would be but the reality revealed by the survey work we’ve carried out has been far worse than we had initially thought.

“The sad truth is that every year 12 trade professionals in the UK, on average, are killed by electricity whilst working on-site, and the majority of those deaths are avoidable Professional electricians and installers risk their lives every day by not following basic safety procedures like using a lock-out kit or test equipment to ensure there is no charge before starting work

“Enough is enough, so we need to come together as an industry to collaborate on creating a safer working environment for all around us ”

An initial survey, conducted a few years ago with over 800 respondents, yielded some quite shocking results in terms of working practices and attitudes The most recent version, carried out in 2022 with over 2,000 respondents, still clearly shows the scale of the problem, and that the solutions lie in the hands of the industry itself.

The key takeaways from the 2022 survey revealed:

l 30% of domestic installers reported that they RARELY or NEVER used a lock-out kit to isolate the electrical supply they’re working on

l 1 in 10 do not even have a safe isolation kit in their van or toolbox.

l 1 in 70 stated that they don’t use any test equipment to ensure there’s no charge

l Perhaps most shocking is that almost 50 of those who responded stated that they were experienced enough not to make mistakes, so didn't need to test!

A collective industry responsibility

With much work still to do, Malcolm quite rightly acknowledges that the education process shouldn’t lay at the door of one individual or organisation, and that the whole industry should instead take a collective responsibility for a practice that is ultimately designed to keep its operatives safe and sound when undertaking their everyday work. It is this joint obligation that forms the basis of the latest safe isolation awareness campaign, which has seen a number of organisations and individuals agree to come together to pool their time, effort and resources

The likes of IET, NAPIT, NICEIC, ECA, SparkSafe LtP and Electrical

Safety

First, along with leading industry brands, will be providing input, resources and expertise to ensure that a consistent, single message is delivered through trade show attendance, articles and editorials, video content and social media activity Another industry survey is also planned for the summer of this year.

From the coalface, proactive individuals like Apprentice 121 founder Mark Allison, will also be giving up their time to ensure fellow professionals are engaged and informed on the subject

Malcolm concludes: “The goal of this campaign is simple – to drastically reduce avoidable accidents for electricians and other contractors working on-site

“It’s encouraging to see so many putting their egos aside to work alongside competitors, delivering a collaborative solution to create a safer working environment for us all ”

Louise Adamson’s brother, Michael, was tragically killed on-site in 2005

The group will be appearing at trade shows throughout 2024 to further promote the message

IT’S ON THE CARDS!

We find out more about how and why KNX UK and ECS are joining forces to elevate standards for the installation of smart controls in the built environment.

In a move that aims to elevate the standards and recognition of competent, certified KNX Integrators across the UK, the Electrical Certification Scheme (ECS) has collaborated with KNX UK to introduce an ECS card that is specifically for KNX Integrators

Who is eligible?

Eligibility for this card requires KNX certification and membership of KNX UK to demonstrate competency and professionalism.

The importance of the ECS card extends beyond a professional ID. It is a comprehensive testament to an individual's competence, covering training and skills, qualifications, commitment to health, safety and environmental standards, and adherence to professional codes of conduct

Developed and supported by more than 200 organisations, the standards underpinning each ECS occupation are rigorous and widely respected. It has long been a pivotal tool in the construction industry and built environment, encompassing a wide array of 75 occupations, including electricians, fire and safety specialists, telecoms experts, AV integrators, cyber security professionals and now KNX Integrators

The CSCS Alliance, the partnership between the 38 schemes licensed to use the CSCS logo, currently covers a remarkable 2 1 million workers, reflecting the scheme's extensive reach and impact within the wider industry

For most clients and main contractors, providing evidence of the relevant ECS card for your job is not just expected, it is mandatory ECS (and the CSCS logo) is backed by trade associations, local

authorities, NHS Trusts, housing associations and house builders, energy generators and data centres. Indeed, it’s becoming almost impossible to access professional and controlled sites without evidence of your competence for the role

Since April 2022, the introduction of the CSCS Smart Check system has become increasingly used by organisations to quickly and efficiently verify that individuals possess the appropriate certifications and qualifications for their respective tasks

Difficulties with site access

Iain Gordon, Chair of KNX UK, is a qualified electrician and a certified KNX Partner of more than 20 years

He said: “This collaboration acknowledges the skillset of KNX Certified Integrators as an entirely separate and specialised category

The increased specification for smart building integration has brought with it a necessity for non-electrically qualified, software professionals to attend construction sites.

A good example of this are professionals like Matthew Tate, who has worked extensively with smart building controls integration but has found access to sites increasingly difficult

He’s delighted with the availability of the new card, describing it as ‘a breath of fresh air’, and couldn’t believe how easy the process was. He’s now in possession of his ECS card that acknowledges his specific professional competency

T h e d e v e l o p m e n t o f t h e K N X U K E C S c a r d i s a c o l l a b o r a t i v e e f f o r t

s p e a r h e a d e d b y t h e J o i n t I n d u s t r y

B o a r d & E l e c t r o t e c h n i c a l C e r t i f i c a t i o n

S c h e m e a n d K N X U K – a n o n - p r o f i t

m e m b e r s’ a s s o c i a t i o n f o

“The practice of mandatory site cards on commercial sites is now commonplace and this may soon extend to NHBC sites and become a requirement of all local Councils and Building Control Officers.”

He added: “On a purely personal basis, as a qualified electrician, obtaining an ECS card has always been easy for me, but having the card with my specialist KNX Integrator qualification on it is gratifying and provides clarity and assurance for my clients and site personnel ”

All qualified KNX Certified Integrators are eligible to join KNX UK for a small annual fee and will receive fast-tracked online access to ECS cards, along with many other benefits

THEDI AR YOFAN I

What is your invention and what is it designed to do?

The Socket Tester Holder (STH), now known as the Jakoda, is designed to give electrical contractors a convenient place to store their socket tester.

What is your background in the electrical industry?

I spent almost 10 years working in the merchant navy as an engineer, which included electrical installation and maintenance After leaving this role I went back to college to continue and complete my electrical qualifications and I now work as a customer care engineer/electrician supplying the holiday park industry with new static caravans an luxury lodges for Surf Bay Leisure

What inspired your invention?

I was always either leaving my socket tester on-site or getting frustrated at being unable to find a suitable place to store my unit so it wouldn’t get damaged, s set about finding a solution

myself The STH was origin made from parts that I had hand in my workshop and, shared my idea and creation via a

NAME: DUNCAN THOMSON

FROM: Westwood Ho, Devon

OCCUPATION: Customer Care Engineer/ Electrician

INVENTION: Socket Tester Holder (SRSTH)

post on social media, I received lots of messages, comments, and positive feedback which helped me further realise that I wasn’t the only one with these frustrations, d that maybe my idea could be enefit to others working within e industry

Are there any other scenarios where the Jakoda Socket Tester Holder will prove useful?

As well as giving you a handy place to store your socket tester, Super Rod and I have added the nulling feature for your MFT. Simply plug your lead into the socket tester and select ‘null leads’ on the tester and you’re all set

Why is the Jakoda useful to have in your tool bag?

It simply clips onto your tool bag, van racking or belt loop,

for example, and gives you a secure and convenient place to store your socket tester (or other plug-in items, for that matter) Also, having it stored in a prominent place on your tool bag gives you a visual aid so that you know when it’s been left behind on the job site

Who would benefit the most from this product?

The unit is of significant benefit to all electricians – both domestic and commercial – as well as any professional that uses a socket tester, such as maintenance staff, builders and security/alarm engineers

Why did you work with Super Rod? I’ve been using Super Rod products for years and have always found the tools to be massive time-savers and well made As you can imagine, I was very excited when the brand approached me, and I’m happy to have the backing of such a well respected manufacturer in this industry. I also knew Super Rod would be able to take this product to a much wider audience than I could

Finally, any tips for would-be inventors? The simplest solutions are often the best

continuing professional development (CPD) can be broadly defined as any type of learning you undertake which increases your knowledge, understanding and experiences of a subject area or role. To help professionals to better document and prove this process, our CPD Zone contains content and articles that have been checked, verified and accredited by a third-party specialist organisation

Collectively, the content within this section has been deemed worthy of 1 x CPD credit, or one hours’ worth of CPD

Once this content has been consumed, readers will have the opportunity to scan a QR code which will provide a bespoke, downloadable certificate that can be used as part of a

professional’s ongoing CPD record

This means that if you’re a monthly reader of PE, you could earn up to 11 credits, or 11 hours’ worth of CPD, just by reading a regular copy of your favourite independent industry magazine in 2024

DO NOT SCAN THE QR CODE UNLESS YOU HAVE READ ALL OF THE CONTENT WITHIN THIS SECTION!

A large element of CPD involves self-certification and relies on professionals being honest about what they have actually read, consumed and digested A QR code and RDRLink code have been placed with the final article in this month’s CPD Zone and ONLY once you have read ALL of the articles within this section, should you then scan/enter the code to receive your bespoke certificate

By skipping any of these steps, you’re not just cheating the system, but yourself and your fellow professionals at the same time!

NEW USERS – ACCESS YOUR BESPOKE

THE CODEBREAKERS

When carr ying out any alterations, additions or modifications to an electrical installation it ’s essential to confirm that the incoming supply is adequate for the proposed works.

During the process of installing the new consumer unit the request to have a double -pole isolator to allow safe work ing was the correct way to proceed and to allow safe work ing

As electrical contractors, we’re reliant on third-par ties to provide this ser vice as we’re not permitted to remove the ser vice cut- out fuse or remove terminals of the metering arrangements.

We would expect that the work carried out on providing the double -pole isolator would be compliant and suitable for connection

The meter tails have not been provided with a means of preventing strain on the terminations and have not been provided with secure connections at the terminals of the double -pole isolator

The supply side of the double -pole isolator has not been provided with a seal to prevent unauthorised access and the missing and loose

terminal screws do not provide adequate connections, resulting in the loss of supply to the installation

Although this would not strictly fall under the terms of an EICR, and therefore would not be subject to a classification code, the infringements can still be listed The

ALISTAIR RIGBY: THERE WAS NO POWER TO MY NEW BOARD SO I OPENED UP THE ISOLATOR FOR A LOOK AND FOUND THIS –THE LINE WAS BARELY HELD BY ONE SCREW AND BOTH SCREWS MISSED THE NEUTRAL! I’M GUESSING THE ‘ME TER MONKEYS’ HAVE BEEN AT IT AGAIN?

Need help with cracking those all-impor tant EICR codes? Ever y 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 pic tures through to us at: pe@hamer ville.co.uk

I t ’s not surprising that we encounter rodents interacting with electrical installations although it ’s more often cable damage and subsequent faults that are then discovered

One of the first things we need to consider before removing the dead mouse is whether we can we safely isolate the supply to commence work, as the timorous beastie is conducting across the incoming terminals. Hopefully there’s a double -pole isolator but, if not, it may require a call to the safe isolation provider to safely remove the cut- out fuse

Expired vermin can pose a serious health risk, as they can carr y a variety of diseases and parasites As such, we have to consider the health and safety risks to ourselves, to the client and any other par ty Never just remove the poor unfor tunate by bare hands, use disposable gloves and a filter mask instead.

Have a sealable bag ready to enclose the vermin and then dispose in a general rubbish bin or inform the client to ask the local authority to collect the deceased.

This situation may require the replacement of the internal components, main switch and circuit-breakers, depending on contamination and whether there has been damage to the devices from any fault currents.

Assessment of the environment would have to be considered if vermin were likely to return (quite possibly relatives of the poor creature), so this may involve increasing the IP rating for the consumer unit to restrict access.

DANIEL KENNY: I CAME ACROSS THE PIC TURED ITEM WHEN CARRYING OUT AN EICR – CLEARLY A C2 (ACCORDING TO MY ASSESSOR AND THE BIG BROWN BOOK)! NEEDLESS TO SAY, THE RODENT WASN'T TRAINED IN CLASSICAL MUSIC BUT DID A VERY GOOD JOB AT BEING THE CONDUC TOR!

PME AND PNB: WHAT’S THE DIFFERENCE?

Darren Crannis, ECA Technical Manager, looks at protective earthing systems and unravels the difference between PME and PNB.

The distinctions between TN-C-S earthing variants, Protective Multiple Earthing (PME) and Protective Neutral Bonding (PNB), often lead to confusion

Despite both falling under the TN-C-S category, they diverge significantly, impacting design considerations and inspection outcomes.

Here we aim to shed light on the distinction between PNB and PME, providing guidance for professionals

The basics of TN-C-S

A TN-C-S earthing system, denoted by its single source of supply, establishes a direct connection with Earth at one or more points The 'T' signifies this connection, while 'N' designates the connection of exposed conductive parts to Earth through a protective conductor

The subsequent 'C-S' letters imply the combination of neutral and protective conductors in the supply, which then separate within the installation This configuration, also known as PME, involves the earthed Protective Earth Neutral (PEN) conductor, forming the backbone of the system.

PME: a closer look

TN-C-S transforms into PME when the PEN or Combined Neutral Earth (CNE) conductor is earthed at multiple points in the supply and at the source itself This ensures a low impedance path to Earth for all elements of the PEN conductor, making it the most prevalent form of connection to

installations In practical terms, all exposed-conductive-parts link to the PEN conductor via the main earthing terminal, creating a network of interconnected terminals

PNB: a useful alternative

Protective Neutral Bonding (PNB), akin to PME, operates within the TN-C-S framework but introduces a crucial distinction

In PNB, the neutral earth connection is established once at or near to the customer's installation, rather than at multiple locations This is particularly common in scenarios where dedicated transformers for individual customer connections or pole-mounted transformers serving isolated locations are prime examples of TN-C-S PNB setups.

TN-C-S PNB surfaces when the consumer's installation is tethered to a single source of supply at just one point on the network This often involves a direct supply to an individual customer directly from the transformer

Engineering Recommendation G12/4 from the Energy Networks Association advises that the connection to Earth and the consumer's intake should ideally be 40 meters or less apart Minimising the risk of voltage rise due to a broken neutral is crucial, prompting the recommendation to make this connection as close as possible to the consumer's supply terminals

Implications for design and inspection

When dealing with TN-C-S PNB

installations, it's crucial to acknowledge that, in most cases, they can be considered equivalent to TN-S for sizing the main earthing and main protective bonding conductors The maximum size of the main protective bonding conductor need not exceed 25 mm² of copper conductor

In contrast, TN-C-S PME installations are treated akin to where PME conditions apply, where the maximum size of the main protective bonding conductor should not surpass 50 mm² of copper conductor

Designers are advised, per Note above Table 54 8 of BS 7671:2018+A2:2022, to confirm any specific requirements of the local Distribution Network Operator (DNO) DNOs may necessitate a larger size of protective bonding conductor to accommodate local network conditions

Navigating the TN-C-S maze

In the realm of TN-C-S earthing arrangements, understanding the subtleties between PME and PNB is paramount This knowledge not only streamlines design processes but also ensures compliance with regulations, minimising the risk of 'unsatisfactory' inspection reports

TEST SEQUENCE FOR PERIODIC INSPECTION

BS 7671 contains clear requirements in respect of the order in which many tests have to be carried out during initial verification. However, no such information is given in respect of testing carried out as part of a periodic inspection of a property. This article discusses some differences between initial and periodic verification pertinent to testing and suggests a sequence of testing which may be appropriate for use when carrying out a periodic inspection.

Initial verification

Section 643 of BS 7671 contains requirements for the testing of an electrical installation during initial verification

Regulation 643 1 states that the tests described in Regulations 643 2 to 643.11, where relevant and appropriate for the installation being tested, shall be carried out It also states that the tests described in Regulations:

l 643 2 Continuity of conductors

l 643.3 Insulation resistance

l 643 4 Protection by SELV, PELV or by electrical separation

l 643 5 Insulation resistance / impedance of floors and walls

l 643 6 Polarity

shall be undertaken, where relevant, in that sequence before the installation or that part being worked on is energised

It is important that these tests are performed in the correct sequence. For example, we must verify the

continuity of a conductor before carrying out an insulation resistance test to confirm that the test voltage is applied to the full length of all of the relevant conductor(s) to be tested

Without verifying end-to-end continuity first the insulation resistance test might only be applied to a part of the conductor(s)

Regulation 643 1 advises that: ‘If any test indicates a failure to comply, that test and any preceding test, the results of which may have been

“This preliminary testing might identify damage, defects or non-compliances which render the installation dangerous and which may prevent, or severely limit, any further testing activities.”

influenced by the fault indicated, shall be repeated after the fault has been rectified’

Additionally, where the installation incorporates an earth electrode, the testing described in Regulation 643 7 2 shall also be carried out prior to the installation, or that part being worked on, being energised

Thereafter, the applicable tests described in Regulations:

l 643 7 3 Earth fault loop impedance and prospective fault current

l 643 8 Additional protection

l 643 9 Check of phase sequence

l 643 10 Functional testing

shall also be carried out

Periodic verification

BS 7671 does not state a sequence for testing forming part of periodic inspection activities It also does not state which tests should be carried out during periodic inspection and testing

However Regulation 651.2 states that the periodic inspection shall be

supplemented by appropriate testing and measurements from Chapter 64

Any sequence of testing employed during a periodic inspection must take account of the differences between initial and periodic verification

Perhaps the key difference is that, in many cases, an existing installation will be connected to a supply and will be energised prior to the periodic inspection taking place

Where this is the case, it would seem wise to carry out some testing at the origin, with the installation energised, to determine the adequacy, or otherwise, of the supply arrangement before progressing to any further inspection or testing within the installation

This preliminary testing might identify damage, defects or non-compliances which render the installation immediately or potentially dangerous and which may prevent, or severely limit, any further testing activities. For example, incorrect polarity of the incoming supply, or inadequacies in the earthing arrangement for the installation

The sequence shown in Table 1, reproduced from the NICEIC publication Site Guide (18th Edition AMD2), may be appropriate, bearing in mind that not all the tests listed will be applicable to any particular installation

Summary

BS 7671 does not state a specific sequence for testing during a periodic inspection As, in many cases, the electrical supply to the premises being inspected will be energised, once it has been established via a visual inspection of the relevant equipment etc. that it is safe to do so, the suitability of the existing supply arrangement should be verified as a first step

In some cases, where issues are observed, this may well prevent any further live testing taking place or possibly stop the verification completely

Table 1 Suggested sequence of testing for a periodic inspection

In this article, originally written for the IET Wiring Matters publication, James Eade looks to dispel some of the myths surrounding the use of flexible cables in fixed installations.

MYTHBUSTING: FLEXIBLE CABLES IN FIXED INSTALLATIONS

The content for this piece was inspired by a comment that was posted on the IET EngX Forum which stated: ‘Flexible cables are not permitted in fixed installations’. This myth is not uncommon.

The origins of it are unclear but seem to date back to the 15th Edition of the IEE Wiring Regulations (if not before) and are believed to have stemmed from the types of insulation materials used for flexible cables in years gone by.

In the 16th Edition, there were definitions for flexible cables (for example, a cable designed to be flexed in use) and flexible cords (a flexible cable with conductor cross-sectional areas (csa) of 4 mm2 or less), but no reference to them being specifically prohibited.

Like phase separation, the memories of some old requirements linger on. In the 16th Edition (including AM2, 2004), Regulation 521-01-04 did state that:

“A flexible cable or flexible cord shall be used for fixed wiring only where the relevant

provisions of the regulations are met.” This requirement does come across in a negative fashion, giving the impression that flexible cables may be used as something of a last resort. Interestingly, this requirement still exists today in BS 7671:2018+A2:2022 in Regulation 521.9 as follows:

521.9 Use of flexible cables

521.9.1 A flexible cable shall be used for fixed wiring only where the relevant provisions of BS 7671 are met. Flexible

cables used for fixed wiring shall be of the heavy duty type unless the risk of damage during installation and service, due to impact or other mechanical stresses, is low or has been minimized or protection against mechanical damage is provided.

NOTE: Descriptions of light, ordinary and heavy duty types are given in BS EN 50565-1.

Continuing with the current edition, Regulations 521.9.2 and 521.9.3 go on to require flexes to be used for connecting equipment that may be moved during use. The definition of flexible cords has also gone, leaving just flexible cables listed in Part 2. However, there is still no prohibition on their use.

The main differences between cables used for installations and flexible cables are the use of Class 5 finely stranded conductors rather than Class 1 (solid) or Class 2 (semi-stranded), coupled with differences in insulation materials to allow for the flexibility.

Such cables are in widespread use from construction sites to events (where they are used almost exclusively), as well, of course, as final connections in installations for lighting fixtures or from fused connection units to equipment such as heaters, for example.

Having decided to wire your installation in flexible cable, what are the "relevant provisions of BS 7671" alluded to in 521.9.1? As well as complying with the general rules, there are a couple of key points to note with this:

● The flexible cable should have appropriate mechanical robustness for the application as described in the note to the Regulation which refers to BS EN 50565-1. This Standard describes various categories, summarised thus:

1. “Heavy duty” describes the stresses that might be expected in, for example, industrial and agricultural premises.

2. “Ordinary duty” describes the stresses that might be expected in, for example, domestic, commercial and light industrial applications.

3. “Light duty” applications might include flexible cables for small appliances.

4. “Extra light duty” applications are, for example, very small appliances such as electric shavers, chargers for mobile phones, etc. Where this protection cannot be achieved using the cable alone, suitable additional mechanical protection should be provided.

● The temperature rating of the flexible cable should be suitable for the connected wiring accessories (Regulation 526.4).

● Wiring terminations may need to be finished in an appropriate termination as required of Regulation Group 526.9. IET Guidance Note 3 has details on appropriate wiring accessory terminals and their markings in Table 2.1.

● Generally, all the current-carrying capacity and voltage drop tables in Appendix 4 are for Class 1 and Class 2 stranding, with the exception of Tables 4F1 to 4F3. The current carrying capacity and voltage drop may need to be corrected if using tables for other cables, such as PVC cables complying with the insulation and temperature requirements of Table 4D2. Information is given in Section 2.4 of Appendix 4.

Far from being prohibited, flexible cables are required in some parts of BS 7671:2018+A2:2022 and examples include:

● Regulation 422.3.201 permits their use for locations where a particular risk of fire exists, although has some requirements for their construction or protection as detailed in Regulation Group 521.9.

● Regulation 413.3.4 has a particular requirement concerning their use in parts of the installation with protective measure double or reinforced insulation.

● Regulation 418.3.6 for electrical separation to more than one item of equipment requires flexible cables to incorporate a protective conductor.

● They are required to be used for suspended current-using equipment (Regulation 522.7.2).

● They are required in installations in flexible structures, or where structures are intended to be moved (Regulation 522.15.2).

● There are minimum cross-sectional areas for flexible cables "for any other application" in Table 52.3.

● Flexible cables are required for the connection of equipment that may be regularly or occasionally moved in use (Regulations 521.9.2 and 521.9.3).

● Flexible cables are required as a method of connection of equipment having a high protective conductor current as detailed in Regulation 543.7.1.202.

● Some Part 7 special locations specify certain wiring systems for which flexible cables are options, or mandated as noted in Regulation 522.15.2: (Regulation Group 704.522.8, Regulation 711.52, Regulation 717.411.3.1.2, Regulation Group 717.52, Regulation 721.521.2, Regulation 740.521.1, Regulation 740.55.1.1).

As ever, it is worth reviewing the fundamental principles in Part 1. Of relevance here are Regulations 132.6 and 132.7 for the cross-sectional area of conductors and types of wiring and installation methods, plus Regulation Group 133 for the selection of equipment.

Flexible cables can tick all the boxes and, if the extra cost over more rigid types is not a concern, there is no reason why they can’t be used.

With thanks to Graham Kenyon for his contributions to this article, originally published in May 2023 for IET Wiring Matters.

RCDS FOR HP INSTALLATIONS: 18TH EDITION REQUIREMENTS

Are you involved directly with heat pump installations or expecting to deal with an existing installation? A better understanding of RCD requirements associated with HPs can save time and money for you and your customers, as Chaz Andrews, Technical Manager at Doepke UK, explains.

ASHPs (air source heat pumps) contain large inverters in comparison to domestic washing machines, for example Inverter based speed control is central to the economic performance of HP compressors and fans Inverters also help to reduce compressor starting current peaks, enabling the use of higher kW ratings on single phase supplies, relevant to 90% of UK domestic properties

In installations requiring RCD protection, HPs must be used with specific types of RCD HP inverters are not suitable for connection to Type A RCDs. Examples of problems associated with incorrect RCD

selection are covered in this article

Aside from being dangerous, HPs that are paired with an unsuitable RCD also lead to the risk of an unreliable heating installation and HP damage

Guidance

U n l i k e P V a n d E V, t h e r e i s c u r r e n t l y n o

s p e c i f i c g u i d a n c e g i v e n i n B S 7 6 7 1 o r

t h e I E T G u i d e ( E l e c t r i f i e d H e a t i n g )

r e l a t i n g t o H P i n s t a l l a t i o n . R C D s

c o n n e c t e d i n c i r c u i t w i t h H P s a r e

c o v e r e d b y t h e g e n e r i c r e q u i r e m e n t s o f

Re g 5 3 1 3 3 Ta k e

*Note: HP designs and supply rating (kW)

vary significantly, even between models from the same manufacturer Some HP designs, due to their operational leakage current, are not suitable for use with 30 mA RCDs Check with the HP manufacturer first

The location, external ground mounted and the large exposed conductive part associated with the metal casing, pose an elevated risk in the event of a fault and inappropriate ADS (Reg 411) selection, design and installation

Where fault disconnection within the required time relies on the operation of an upstream RCD, using the incorrect ‘Type’ of RCD in association with a heat pump leads to the risk of RCD ‘blinding’. The

RCD cannot reliably detect fault currents as required by BS 7671, increasing the risk of a fatal accident.

The HP company (equipment specifier) and the installer (electrical) are reliant on each other This relates to “the duty of care owed to the consumer,” with regard to the combined safety of the equipment and the installation.

HP equipment design characteristics

In installations requiring RCD protection, the characteristics of the inbuilt inverter equipment determine the sensitivity and Type of RCD to be installed up-stream HP inverters produce AC leakage currents with frequency components above and below 50 Hz, resulting in composite (mixed frequency) residual currents, requiring the application of Type F and B RCDs (see 531 3 3 (ii) & (iii))

Type A RCDs are designed for operation with sinusoidal or pulsed residual current generated at 50 Hz – Ref 531 3 3 (i) Type A RCDs are not suitable for applications associated with inverters producing composite residual currents

For those involved in HP design and associated standards committees, see BS EN IEC 62477 H.3: Fault current waveforms produced by speed control inverter topology and the RCD type This is explained briefly below and relates to the fault currents generated at frequencies less than or greater than 50 Hz under foreseeable fault conditions

Unwanted tripping of an RCD associated with a HP installation can be the first indication that the incorrect Type of RCD has been installed upstream Using Type A RCDs outside of the design scope (ref 133 1 3) could result in the device failing to trip when required, or unwanted tripping.

In addition, transients associated with powering up and/or powering down the inverter, can exceed the transient switch-on limit for Type A RCDs, again resulting in unwanted tripping

*Note: Before carrying out any electrical tests, check the HP manufacturer’s restart procedure. Reconnecting the supply to a HP and running immediately after extended loss of supply can result in serious damage to the compressor

Can you use Type F with single phase HP?

The characteristics of the HP inverter, and the location of the fault within the equipment, determine the characteristics of the residual current

The selection of the Type of RCD must consider the fault current scenarios identified in the standards and by the HP manufacturer, in their design risk assessment documentation.

Electrical installers do not have access to the HP manufacturer’s inverter design characteristics and consequently cannot make the decision to use Type F in place of Type B, without the agreement of the HP manufacturer.

The example below is for a common generic scheme associated with single phase supplied – 3 phase out inverter, without power a factor correction stage –ref source BS EN IEC 62477-1 Fig H 3

An insulation fault IF1 on the DC side of the bridge rectifier produces a pulsed residual current at the fundamental (mains) frequency This pulsed current may be superimposed on a smooth DC component, the effective value of which is related to the DC link voltage, smoothing capacitance, and fault resistance

*Note: Limits for smooth DC fault current: ≤ 10 mA Type F or > 10 mA Type B Type F RCDs do not trip on smooth DC Do not use for smooth DC fault current > 10 mA

A fault IF2 located on the output stage (supply to motor) results in a residual current containing multiple frequency components This is referred to as a composite residual current for design/test purposes (see the table below, left)

The composite residual current components have relative values defined at the specific frequency; mains frequency, the motor frequency at 10 Hz, and inverter switching frequency at 1 kHz These values of 10 Hz and 1 kHz represent the most severe condition for Type F RCD tripping, providing reliable operation and effective protection when using Type F RCDs.

HP design limits for use of Type F checked through equipment design calculations and testing:

l Ratio of composite leakages current components compared to RCD sensitivity IAn

l Minimum motor speed control setting (frequency) 10 Hz

l Maximum inverter switching frequency < 1 kHz

l Maximum smooth dc fault current limit < 10 mA

If the equipment design characteristics cannot be guaranteed to meet the Type F limits, use Type B instead Single phase supplied speed control inverters with power factor correction stages and 3 phase supplied inverters, must only be used with Type B RCDs – see additional diagrams and recommendations in BS EN IEC 62477-1H 3

Type B RCD unexplained tripping Modern HP inverters with switching frequency in the region of 2 < 16 kHz

naturally produce higher leakage currents at higher frequency (circuit capacitance Xc is indirectly proportional to frequency) The switching frequency is factory set, based on the required HP operating characteristics A number of manufacturers’ Type B RCDs are only designed to work < 1 kHz i e above 1 kHz the tripping characteristic is undefined

The RCD may trip unexpectedly when subjected to lower values of leakage current than those required at 1 kHz by BS EN 62423 This can manifest itself in unexplained tripping events of some Type B RCDs associated with a HP Refer to the manufacturer’s Type B RCD technical characteristics to verify their suitability for use with leakage currents generated by the HP inverter at frequencies > 1 kHz

Conclusion

Greener homes require smarter solutions (equipment) than those traditionally associated with the simplicity of our old domestic installations This, in turn, requires a better knowledge of the individual characteristics of the equipment we’re intending to supply with electricity A bit of planning, checking and verification before attending site is a pre-requisite for quick, safe and reliable installation.

As with any complex equipment, HP characteristics vary from one manufacturer to another Consequently, the design of the electrical supply requirements and associated protection devices may differ This must be considered in conjunction with the individual site design requirements, based on BS 7671 It is simple if you do it right – look, check, ask, think, do!

To operate reliably and provide years of trouble-free service, HPs require a reliable electrical supply The duty of care is shared between the HP manufacturer/UK supplier and the electrical installer This can be met with a bit of planning, checking and discussion, if necessary, prior to installation

Big metal boxes mounted outside and supplied with electricity represent a potential hazard. To reduce the risk of an accident, the electrical installation and method of protection (ADS), must meet the specific requirements of BS 7671, to the letter

GET MORE DETAILS ABOUT DOEPKE’S RANGE OF RCDS AND CIRCUIT PROTECTION PRODUCTS AT: WWW.RDR.LINK/EBC015

Jake Green, Head of Technical Engagement at Scolmore Group, gives a brief overview of the general range of conditions detailed in Section 522 of BS 7671, which an installer will have to consider as they select a suitable wiring system for an electrical installation.

EXTERNAL INFLUENCES

One of the fundamental principles detailed in Chapter 13 of BS 7671: 2018 (including amendments) is ‘Environmental conditions’. Simply stated, Regulation 132 5 1 requires that ‘the design of the electrical installation shall take into account the environmental conditions to which it will be subjected’

Section 522

Section 522 of BS 7671 details those environmental conditions that need to be considered when selecting and installing wiring systems The scope of the section is wide ranging, covering the following:

Ambient temperature

Requires the designer/installer to ensure that installed equipment is suitable for both the minimum and maximum temperatures reasonably expected Account should also be taken of the maximum temperature expected under fault conditions (522 1)

External heat sources

Electrical equipment must be protected from the detrimental effects of specific heat sources This might be by shielding, distancing from the source, having equipment capable of managing the level

of heat or local reinforcement or substitution of insulating material (522 2)

Presence of water or high humidity

Electrical equipment must be suitably protected from ingress by water and/or the build-up of condensation The Unicrimp Q-Nect series ( junction boxes, connectors and connection boxes) provides a range of IP66 to IP68 products, providing the designer/installer with suitable options when selecting equipment for use in the presence of water (522.3).

Presence of solid foreign bodies

Requires the wiring system to be capable of minimising the danger arising from the ingress of solid foreign bodies The IP rating should be suitable for the nature of the foreign bodies (522 4)

Presence of corrosive or polluting substances

Requires due account to be taken of materials/substances likely to cause corrosion or deterioration of the wiring system This can be water (rust), presence of dissimilar metals or more obvious corrosive substances (522 5)

Impact

The wiring system must be capable of

withstanding damage caused by mechanical stress such as impact, abrasion, penetration, tension, compression during installation as well as being protected from impact as part of the fixed installation (522 6)

Vibration

Requires a wiring system to be supported in such a way that due account is given to the likely vibration that will exist This may require, for example, use to be made of saddle clips rather than standard cable clips where a cable is not installed within a

cable management system (522 7)

Other mechanical stresses

Requires a wiring system to be selected and erected to avoid during installation, use or maintenance, damage to the sheath This requires use to be made, where necessary, of correct saddles, clips and the like to support cables to avoid damage to the cables and terminations Furthermore, amongst other things, buried cables should be suitably marked with tape/cable covers (522.8).

Presence of flora and/or mould growth

Requires the designer to take account of the effects of plants, trees and the ingress of mould growth (522 9)

Presence of fauna

Recognises that wildlife can have a

serious negative impact on an installation Rodents can gain access through very small openings; large animals can cause significant damage to cables and the like Designers and installers must make use of both suitable wiring systems and correct locations to avoid damage (522 10)

Solar and ultraviolet radiation

Where solar or ultraviolet radiation is likely to have a significant effect, a suitable wiring system must be selected and erected or properly shielded (522.11).

Seismic effects are unlikely to be an issue in the UK (522 12)

Movement of air (522 13) and Nature of processed or stored materials (522 14) are covered in other parts of BS 7671

Building design

Requires the designer to take due account of where structural movement is likely to exist and potentially create excessive mechanical stress This typically happens in larger and taller buildings where relative movement is required as part of the build (522 15)

This article has only touched upon the various environmental factors to be considered by designers and installers Reference should also be made to Appendix 5 of BS 7671 for the applicability of the various codes detailed in Section 522

DROP KICK: VOLTAGE DROP

BS 7671 and requirements for voltage drop

The topic of voltage drop is covered within section 525 of BS 7671 as well as in Appendix 4 section 6 4, where details are provided regarding the requirements and maximum limitations for use with electrical installations

For low voltage installations, the voltage drop values are found in Appendix 4 of BS 7671, for those fed from a public distribution system, the values shown in Table 1 apply

In cases where the client has their own generator or transformer, and where the electrical distribution system is not a public supply, voltage band control will be the responsibility of the client. When this happens, values of voltage drop can be increased, as seen in Table 2

The specified lower equipment voltage limit means that the installation voltage at the terminals has to exceed that lower value in accordance with Regulation 525.1.

In the absence of a product standard for fixed current-using equipment, the installation voltage at the terminals will not impair the safe functioning of that equipment under the requirements of Regulation 525.201.

Considering voltage drop in the design involves taking into account the

electrical installation and circuit type

According to Table 1, for a DNO supply, lighting circuits are at 3% of the nominal 230 V single-phase supply voltage, and the voltage drop must not exceed 6 9 V All other circuits are at 5% and the voltage drop must not exceed 11 5 V

The tables in Appendix 4 of BS 7671 contain a voltage drop section in which the millivolt per amp per metre (mV/A/m) of a particular cable may be obtained. For example, Table 4D5 should be used for thermoplastic insulated and sheathed flat cables with copper conductors

An

temperature of 40°C and is grouped with three other cables of similar size and loading The protection is provided by a BS 60898 Type B circuit breaker.

We need to determine the following before we can establish whether the volt drop is satisfactory:

1. The circuit design current (Ib)

Design Current Ib = Watts / Voltage

Ib = 6000/230 = 26 A

2 The rated current of the protective device (In)

The rating of the protective device needs to be equal to or greater than the design current of 26 A Therefore,

Frank Bertie, Chief Technical Officer at NAPIT, explains how to establish voltage drop limits within electrical installations.

a 32 A BS 60898 Type B circuit breaker would be selected

In = 32 A

3. The tabulated current value of the cable (It)

Tabulated Current It = In / Correction Factors

The next step is to apply any correction factors In the worked example we need to consider the ambient temperature (Ca) and grouping (Cg)

The factors are then applied to the following formula:

It > In / Ca x Cg

From Table 4B1 (BS 7671) Ca = 0 87

From Table 4C1 (BS 7671) Cg = 0 75 (4 circuits, Reference Method C)

It > 32 / 0 87 x 0 75

It > 49 A

It is now time to select a cable size that is capable of carrying 49 A.

From Table 4D5 (BS 7671) Reference Method C, Column 8, we can select 10 mm2, which is rated at 64 A

At this point, we can work out our volt drop and determine whether it is satisfactory Using the same table and conductor size, we can calculate the millivolt amps per metre value

Volt drop from Table 4D5 (BS 7671), 10 mm2 Cable, Column 9 is 4 4 mV/A/m

By using the volt drop formula below, we can now add our mV/A/m value, the design current (Ib) and the cable length (L)

These values are multiplied together and then divided by 1,000, to convert from millivolts to volts, as shown in Fig 1 Volt

The maximum volt drop for this circuit is 11 5 V, as discussed above Therefore, the actual volt drop of 2 29 V is below the permitted value and is, therefore, satisfactory

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

Megger says: You ask:

I’M OFTEN BEING ASKED ABOUT FITTING AND MAINTAINING ELECTRIC VEHICLE (EV) CHARGEPOINTS BUT I NEED TO BE SURE I HAVE THE RIGHT TEST EQUIPMENT FOR DOING THIS. IS THERE ANYTHING THAT YOU’D RECOMMEND?

Before you start working on EV chargepoints, it’s important that you familiarise yourself with all of the relevant chargepoint testing standards But when it comes to test equipment, you may well find you already have almost everything you need, especially if you already work on electrical installations That’s because modern multifunction installation testers (MFTs) like the Megger MFT1741+ and the new Megger MFT-X1 have built-in support for chargepoint testing The only extra equipment you’ll need to buy is an EV chargepoint adaptor This links the tester to the chargepoint and simulates the connection of a vehicle, which is necessary for you to carry out the tests We recommend the Megger EVCA210 adaptor, which, when you use it in conjunction with a suitable MFT, will let you test all AC Mode 3 EV chargepoints in accordance with the IEC/EN 62851-1 and IEC 60364-7-722 standards The EVCA210 is supplied with a fixed Type 2 connector plug, along with a Type 2/Type 1 Adaptor, which is a big benefit if you need to test the older Type 1 plugs on tethered leads Get yourself an EVCA210 to use with your modern MFT, and when it comes to chargepoint testing, you ’ re good to go!

CONTINUE YO UR P ROF E S SION A L DEVELOPMENT AT ELE X SHOW!

Taking place across two days, the ELEX 2024 tour is heading to Harrogate this month. And better still, we’ve got great news for those visitors that are serious about their CPD!

Recent changes to The Electrotechnical Assessment Specification (EAS) which sets out the minimum requirements for a business to be recognised as technically competent by a Certification or Registration Body, includes a requirement for businesses to maintain appropriate records of qualifications, training (including Continuing Professional Development) and experience

To support this requirement, EVERY ELEX seminar is now CPD accredited, ensuring those individuals who make the time and effort to attend will receive a direct certificate of completion, which can

form a key part of your ongoing Continuing Professional Development record.

With industry regulation and legislation changing constantly, the extensive ELEX seminar programme will cover an array of topics, including the latest Amendment 2 to the 18th Edition and the changes this covers, along with best practice and technical advice for professionals to get stuck into Presentations will be delivered by experts in their field and the only cost to delegates is their time.

All seminars will take place in the IET Seminar Theatre located centrally in the exhibition hall and there’s no need for delegates to pre-book, just pre-register to attend the show

Whether you need some advice on the direction the sector is heading, want to chat with manufacturers about their latest solutions, view live demonstrations of the latest products or bag yourself a great

YOUR S H OW, NEA R YO U. . .

l At a venue near you

l Across two days

l Free parking (van friendly)

l Free entry

l Free T-Shirt & a free bacon roll* (*limited to first 1,000 visitors)

l Show bargains

l Hands-on demos

l Meet manufacturers

l Networking opportunities

l CPD accredited seminars and certificates

show deal on tools and equipment from leading brands, your regional ELEX tradeshow has it all

The ELEX 2024 tour will be heading back up north later this month as we return to the YEC in Harrogate on Thursday 16th and Friday 17th May

The experts at Aico explore the benefits of accessible alarm controls and discuss how their use can enhance fire safety.

TAKE THE LOW ROAD

Smoke and Carbon Monoxide (CO) alarms play a crucial role in early fire detection, however, accessibility to these alarms can pose a challenge for individuals with physical limitations or when alarms are installed in hard-to-reach areas

Low-level smoke and CO alarm controls, such as Aico’s Ei450 RadioLINK Alarm Controller, provide an efficient solution to these challenges.

Accessible control over alarms

Low-level control switches provide occupants with accessible control over their alarm systems, enabling them to test, locate, and silence alarms from a convenient location This feature is particularly beneficial for individuals who may struggle to reach high-mounted alarms or those with limited mobility.

Low-level switches offer a simple method to identify the sounding alarm in the event of activation, which is especially crucial in homes equipped with a combination of smoke and CO alarms

While regular alarm testing is essential for ensuring proper functionality, recent data reveals a concerning trend

A study of over 50,000 homes

(predominantly social housing), connected using HomeLINK technology, indicated that only half of the properties had alarms linked to low-level control switches

This disparity in accessibility resulted in a striking difference in alarm testing behaviour Over 60% of homes with low-level control switches tested their alarms at least once within the past year, with this number decreasing dramatically to 24% in homes without these switches.

This data highlights a critical issue: the lack of engagement with fire safety measures among occupants of homes without low-level control switches The 76% non-testing rate suggests that homeowners may not be adequately aware of the potential dangers posed by fire hazards and may not be taking necessary precautions to protect themselves and their loved ones

The over 60% testing rate in homes with low-level control switches demonstrates the positive impact of accessible alarm testing

By facilitating regular testing, these switches educate the occupier to recognise the different sound patterns that fire and CO alarms make This encourages occupants to think about fire safety and prompts them to consider potential fire

hazards, develop escape plans, and discuss fire safety measures with family members.

Higher levels of protection

Statistics published by the Home Office reveal that the majority of fatal domestic fires occur in properties with either no or non-functioning smoke alarms

While occupants in homes with working alarms are undoubtedly safer, the data suggests that those who actively test their alarms will have an even higher level of protection

Regular testing indicates a heightened awareness of fire risks and a willingness to take additional steps for home life safety

Removing barriers to enable participation and engagement is a common theme in various aspects of life, so low-level smoke and CO alarm control switches represent a successful example of barrier removal in the realm of domestic fire safety The data overwhelmingly supports the positive impact of these switches on alarm testing

MORE THAN MEETS THE EYE

We hear from the team at Enkin to find out more about why the technology behind its dimmers is far more complex than one might first appreciate.

In the realm of electrical innovation, convenience and reliability have become key components that build consumer trust as well as elevating interior lighting projects above and beyond previous standards

While safety is at the heart of any electrical installation in the home, a regular underlier in this circle is dimmer switches Often assumed to be an extension of the common light switch, a dimmer switch is often misidentified as equally straightforward and simple in design as a standard one-way or two-way switch, with relatively little in terms of technology However, there’s much more to dimmers than meets the eye

Pace of change

With the switch from leading edge to trailing edge resulting from the discontinuation of incandescent and halogen lamps, the technology that powers these modules has become increasingly more complicated in order to keep up with lighting systems, and often this has fallen short of the mark Many dimmers are simply unable to keep up, which increases the risk of the lighting system becoming unreliable and even unsafe

Enkin takes safety seriously, and with a combined 60 years of electrical experience, its design team has created dimmer modules that not only perform consistently and reliably, but also ensure that safety is the priority throughout the products

Enkin dimmers are not just another

addition to the electrical landscape; they represent an all-encompassed approach to addressing safety concerns while optimising performance

Designed with precision and engineered for reliability, they promise a quality experience for both residential and commercial applications. The integration of a self-recovering thermal fuse and overcurrent protection mechanism marks a significant stride forward in modern dimming technology

Overcurrent events pose a significant threat to electrical systems and connected appliances Enkin modules incorporate an advanced and robust overcurrent protection mechanism to prevent damage caused by excessive current flow by swiftly detecting and interrupting overcurrent conditions

As a result, this safeguards sensitive electronics and ensures the longevity of intricate electrical components within Built-in short circuit protection software goes even further by activating and shutting down the dimmer as soon as an overcurrent is detected The dimmer will only restart once it has detected that the fault has been cleared.

Fire hazard avoidance

Unlike conventional fuses which often require manual replacement after tripping, the self-recovering thermal fuse automatically shuts down if the dimmer exceeds the thermal limit and resumes power once the temperature returns to a

safe level. This feature not only eliminates the need for frequent maintenance but also mitigates the risk of overheating and avoids a potential fire hazard, all while preserving the module for further use

Beyond safety features, Enkin dimmers excel in their attention to detail With a user-friendly push button set-up designed to allow for quick and simple installation, an Enkin module can be installed with minimal fuss or confusion. Just one button on the rear of the module allows the user to easily set the dimmer functions, and this is standard across the Enkin range

Extensive software testing with over 60 leading brands of bulbs has improved overall compatibility to ensure that an Enkin dimmer module will work reliably with your chosen LED bulbs, while state-of-the-art auto-load detection software assesses the load, setting the best parameter for that load, and adapting to provide optimum light This provides a silent and flicker-free experience for the user at every light level

Rhiannon Thompson, Trade Marketing Executive at Carl Kammerling International, the home of C.K Tools, discusses the prevalence of Repetitive Strain Injury (RSI) and how C.K Tools is using innovative product development to help tackle the issue.

EASING THE STRAIN

Di d y o u k n o w t h a t h a l f a m i l l i o n p e o p l e w i t h i n t h e

B r i t i s h w o r k f o r c e s u f f e r w i t h

R S I ? A l t h o u g h c o m m o n l y a s s o c i a t e d w i t h e x t e n d e d c o m p u t e r u s e, t h o s e w o r k i n g i n c o n s t r u c t i o n , e l e c t r i c a l a n d i n d u s t r i a l s e c t o r s a r e e q u a l l y v u l n e r a b l e, i f n o t m o r e s o I n d e e d , c o n s t r u c t i o n a d j a c e n t r o l e s e x p e r i e n c e s o m e o f t h e h i g h e s t p r e v a l e n c e o f R S I a n d u p p e r - l i m b d i s o r d e r s .

The condition (and those related to it), costs the UK around £3 billion each year in lost work hours and production For those who are self-employed and afflicted by RSI, that cost is carried by them, including lost work hours, treatment, and recovery time

RSI is a musculo-skeletal disorder that bears symptomatic and physiological similarities to adjacent conditions such as: tenosynovitis, carpal tunnel, and tendinitis Collectively, these are referred to as ‘upper limb disorders’

These are debilitating conditions, caused by a number of contributing pathological factors including: inflamed tendons, trapped nerves, restricted blood flow and damaged muscles Sufferers

often find themselves in a cycle where these issues are caused, aggravated and worsened by the condition, with very few treatment options available

Left untreated, or without lifestyle changes, upper limb disorders will almost definitely not improve

Treatment options for RSI

Treatment for RSI is limited, and often invasive. Though painkillers can be used alongside other pain-management techniques, these can often hinder the day-to-day life of sufferers, especially those working manually Steroid injections and physiotherapy can also provide some relief, as can acupuncture and massage, though impartial reports are scant on this

In extreme cases, upper limb disorders may require surgical intervention Each year, around 53,000 carpal tunnel procedures are carried out in the UK, with demand for elective procedures set to double by 2030 Each of these surgeries requires a two-week recovery period, which many in work can ill-afford to take

Creating a healthy work environment

The Health and Safety Executive offers clear guidelines for the prevention and

support of RSI in work: use power tools where applicable and appropriate, select tools that are right for the job, consider lighter tools, and those that minimise the amount of force needed

Here at C K Tools, we work closely with a panel of tradespeople to develop innovative new products which solve everyday problems This includes our most recent launch – the C K Tools E-Driver (T4930) – a lightweight, electronic screwdriver with a torque range of 1-6 Nm It’s perfectly adaptable for any job at hand

We know that our end-users are often faced with repetitive tasks that can contribute to the development of RSI, such as replacing socket faceplates and loosening panel screws An EICR test, for example, requires the removal and reinsertion of dozens of baseplate screws, alongside other processes.

While a necessary aspect of work for electricians, it’s exactly this type of repetitive work, often conducted in tight spaces with limited accessibility, that will contribute to upper limb disorders

A further contributing factor, working in lower temperatures, is also a necessary condition for many of those in the

construction industries By reducing the time that end-users are exposed to these conditions, we hope to alleviate the strain caused by the environment, allowing users to complete their work in shorter time periods, to the same high standards

Charging takes one hour, and provides 200 minutes of low-strain, high-accuracy support, with a battery indicator to let users know when it’s time for them and the driver to rest, and recharge The C K Tools E-driver is super-lightweight,

weighing in at just 326 grams

C K Tools prides itself on the quality, innovation and reliability of its products With the launch of the E-Driver, we’re applying those principles to a device that promotes the safety and wellbeing of our users We’ve price-pointed carefully, making this versatile piece of equipment an achievable addition for any toolkit

Initial response has been excellent, and we eagerly await the feedback and testimonials of our customers, and theirs, regarding this exciting new development

VISIT THE C K TOOLS E-DRIVER PRODUCT INFORMATION PAGE AT: WWW.RDR.LINK/EBC023

GET MORE HELP AND SUPPORT WITH RSI AND RELATED CONDITIONS AT: WWW.RDR.LINK/EBC024

THE POWER OF THREE

We catch up with the the team at Hamilton Litestat to get a first-hand look at its new range of smart dimmers and controls, which now offer dimming control from three separate locations.

Offering electrical contractors a comprehensive and user-friendly installation solution for controlling LED lights around the home, office space, bar or restaurant, Hamilton’s new smart dimmers are not just ‘smart’ by name, but also ‘smart’ by nature

With features including App and Alexa control, scene setting and scheduling, the LEDSTAT smart dimmers provide a smart home setup that’s simple to install, enhancing comfort, energy efficiency and convenience.

Launched earlier this year, the range was officially unveiled at ELEX Alexandra Palace at the end of February, and we were treated to a full demonstration and explanation from Hamilton’s staff, who were only too keen to show off its extensive capabilities

Effortless retrofitting

One really interesting feature of the LEDSTAT Smart Wi-Fi Dimmer is its adaptability As living spaces expand, the requirement to extend lighting circuitry becomes unavoidable

The LEDSTAT Wi-Fi dimmer can be effortlessly retrofitted into existing two-way and intermediate wiring, seamlessly integrating into both newly

built kitchen/diners and revitalising older sections This makes it a versatile solution for both new constructions and renovations.

Mark Brady, Product Development Manager, explains: “The unit offers trailing and leading edge options, utilises retrofit wiring (no neutral required), and it’s designed to fit into a 35 mm wallbox, adding convenience for the installer

“Its real shining light, however, comes from the fact it enables full dimming control from three separate locations on one circuit.”

He continues: “One of the issues with traditional dimming solutions is that you’ve previously only been able to dim from one position – the Master – which can be inconvenient for the end user in scenarios where, for example, they want to dim the lighting from a bedside switch, but the master unit is on the wall next to the door Now they can have full dimming control from multiple sources.

“This is made possible through the use of Rotary Companion modules – a dimming extension device that is compatible with both the Wi-Fi Master Rotary LED Dimmer and Wi-Fi In-Line LED Dimmer

“When installed in conjunction with these products the companion will enable true rotary multi-point dimming where the user has the ability to not only switch the

circuit on/off from any position, but they can also dim the circuit Up to two Companions can be connected to the Master, creating a circuit that can be dimmed from three positions ”

Control options are aplenty, with rotary, light level (up and down) and push to make (PTM) switches all performing with

equal distinction to provide a smooth dimming experience

With the proliferation in convenience and control for homeowners these days, one question you’re also sure to be

asked is: “Can I control it with my phone?” In this case, the answer is a ‘yes’, as the LEDSTAT allows users to control all smart dimmers independently through the Hamilton Lite App

Speaking about the App development and capability, Ian Hamilton, Managing Director says: “The Hamilton Lite App is the really clever part and opens up a whole world of possibilities Its powerful wireless interface allows the user to take full control of dimming, scene setting and away from home control

“Additionally, when installed with other Hamilton smart devices, the user can control blinds, RGBW, and relays. These devices can also be linked to scenes to combine lighting, blind and RGBW sound to light for entertaining and parties, creating the right ambience for the occasion ”

He adds: “The Smart dimmers are also compatible with Alexa, which means they can be integrated into Alexa-powered smart home set-ups, allowing users to control the

dimmers using voice commands through their Alexa devices They also work with Google Home assistant ”

Taking control further

Hamilton's LEDSTAT smart Wi-Fi dimmer is not a standalone product; it’s part of a comprehensive range of smart devices designed to meet today's homeowners’ evolving needs

The range includes blind control, switch relays for the on/off control of appliances, and RGBW colour control for mood creation and scene setting

Available in five different Hamilton collections – Hartland, Hartland G2, Sheer, Sheer G2 and Verve – there’s up to 13 different plate finishes to choose from

BROWSE OR DOWNLOAD THE HAMILTON LEDSTAT SMART DIMMERS & SMART DEVICES

BROCHURE ONLINE AT: WWW.RDR.LINK/EBC025

MOBILE’S CALLING

Have you considered how mobile technology can be incorporated into your commercial or industrial projects, or the ways in which it offers potential for your business to evolve? Noel Sesto, Founder & CEO of ControlFreq, answers some key questions around the subject.

QWhat is ControlFreq and what do you specialise in?

ControlFreq is a mobile technology specialist providing end-to-end solutions that help installers overcome technical challenges for end clients. We provide hardware, software, roaming SIM connectivity and seven-day phone support, along with tailor-made systems

QWhy is mobile and remote technology so important these days when it comes to building maintenance and management?

It's the fastest, most practical method to communicate with remote systems in the field Total control of systems on client sites from a mobile device puts the installer in a powerful position, allowing them to deliver timely response and efficient support to end clients

QProvide us with some example applications where your technology can be put to use.

Fire and intruder alarm monitoring: with multiple methods of communication paths from SMS, voice call w/custom audio message, emails, ARC comms via GPRS, 4G, IP, WiFi and voice 'contact-id' call

Retrofit BT Redcare: alternative alarm signalling running 4G (dual SIM), IP (LAN)

and WiFi for instant, reliable communication of fire and intruder signals not tied to any specific monitoring provider.

Cloud control, monitoring & management of multiple systems like fire, intruder, CCTV, ANPR etc

Emergency lift phone retrofit u from PSTN to 4G-VoLTE (mobile VOIP) via SIM BT landlines can be replaced in less than one hour, installed!

to stakeholders Alarm signals by SMS, voice call, email, WhatsApp and live dynamic map markers on WebAlarm Cloud

CCTV audio challenge loudspeaker warning system for dialling in from authorised phone numbers to speak to intruders in real time over a 4G mobile call through a loudspeaker on-site

Car park access control: inegrated with the 'Airbnb of Parking' aka JustPark & YourParkingSpace We help any car park to earn more revenue with on-demand securely managed access.

Door entry system retrofit: up to 1,000 properties can be retrofitted in less than an hour with no access required to flats Full cloud managed user access is inbuilt

Leak, water level and machine fault detection: reporting alarm events instantly

Remote control of virtually anything is possible like lights, heating, gates, pumps, control systems etc We offer customised, tailor-made and fully supported variations of all systems to suit any retrofit application

QHow can electrical professionals and installers incorporate your technology into their offering to customers? Is the technology more suitable for larger, commercial buildings? ControlFreq is primarily focused on solving technical challenges in commercial and industrial applications in fire, intruder, access, fault status, access control, door entry (or any combination of these) from a single cloud interface, enabling installers to simplify seemingly complex retrofit challenges

QAre there any significant recent developments in intruder detection and fire monitoring that you can share with our readers?

BT Redcare's upcoming exit from the alarm signalling market displaces over 150,000 commercial customers, installers and businesses Many chose BT Redcare on the basis they weren't satisfied with the other options available to them

ControlFreq, therefore, offers alternative alarm signalling options

QWhy will your technology be important to this?

ControlFreq alarm communicators support multiple communication paths like dual-SIM 4G, GPRS, IP (LAN) and WiFi We support alarm notifications by SMS, voice calls, email, independent ARC monitoring and our own WebAlarm Cloud Signalling for large estate in-house monitoring

QWhy should electrical professionals be looking to broaden their offering by incorporating solutions such as yours?

With the 3G networks and PSTN landline shutdown in full swing, many legacy systems need to be upgraded imminently ControlFreq offers installers

the hardware, support and best-in-class web-based tools to remotely control, monitor and manage client devices in real time. Providing paid managed services to end clients using our tools and support opens up valuable, recurring revenue opportunities for installers

QWhat kind of UK support and back-up do you provide?

We offer seven-day phone support, an online help centre resource and tracked support ticket system Premium support, bypassing the support ticket system, is available to customers receiving any annually paid managed service

CAUSE FOR ALARMS

Steve Boggis, Sales Director of WisuAlarm Technology UK and Ireland, is in the hot-seat as he answers questions about the brand’s recent launch and future plans.

QTellus a little bit more about the WisuAlarm brand and its heritage.

WisuAlarm Technology is a subsidiary of Dahua Technology, and is dedicated to providing advanced products and solutions to protect people and property from fire and related hazards It’s one of very few professional fire safety brands in the UK and Ireland which designs, manufactures and supplies fire detection products

WisuAlarm Technology UK & Ireland is committed to delivering sophisticated fire protection products and solutions

Headquartered in Maidenhead, Berkshire, we pride ourselves on providing seamless service and support to customers across the UK and Ireland

QWhat steps does WisuAlarm take to ensure the high levels of quality and reliability that are essential for safety critical products?

All WisuAlarm products are produced in the Dahua Smart (IoT) Industrial Park in Hangzhou, China. It covers an area of 510 acres, divided into a 4,500 m2 mould

factory, 46,000 m2 intelligent stock preparation warehouse, 26,000 m2 PCBA factory, 10,000 m2 dust-free module factory, 130,000 m2 full-process automated factory, 200,000 m2 warehousing and logistics and Operational Readiness Testing lab

With the deep integration of advanced production software, all products are produced under digital, visualised, traceable product control There are more than 50 cutting-edge Surface Mount Technology dual-track production lines, 36 self-developed automated assembly platforms and 90 automated testing lines, which improve efficiency and product quality

WisuAlarm offers fire and smoke simulation capabilities and carries out precise testing of smoke and heat detectors in state-of-the-art test tunnels from Lorenz and AW technology In addition, it is able to utilise Dahua Technology’s 5,000 m2 advanced engineering test centre.

With over 30 laboratories – including an

EMC anechoic chamber, Highly Accelerated Life Testing (HALT) laboratory, and a device analysis laboratory – we focus on fundamental research and testing of materials, components, single boards and entire machines Our reliability testing has received accreditation from the China National Accreditation Service (CNAS)

In the UK, our products are certified to relevant British and European Standards by BSI, and are CE/UKCA marked

QWhat

types of products make up the launch portfolio and which end of the market are these primarily aimed at?

We’re targeting the professional electrical trade market, focused on the BS 5839-6 standard for domestic and residential properties.

Our launch products include those suitable for Grade D1, D2, F1 and F2 installations, and categories LD3, LD2 and LD1 under BS 5839-6 These include interconnected smoke, heat and CO alarms; mains-powered smoke, heat and CO alarms; environmental sensors to

detect damp, mould and to monitor air quality; a wireless gateway for landlord monitoring of social housing installations; and the WisuAlarm App, which enables the monitoring of devices from any location in the world

QHow does ‘interconnectivity’ technology work, and why is it increasingly important to have this functionality available in safety critical devices?

Wireless interconnection of smoke and heat detectors is important in BS 5839-6 for several reasons:

Improved safety

Wireless interconnection allows all detectors within a property to communicate with each other If one detector detects smoke or heat, it can trigger all interconnected detectors to sound alarms simultaneously, providing early warning to occupants throughout the property.

Ease of installation

Wireless connectivity eliminates the need for complex wiring between detectors, making installation faster, easier and less disruptive This is particularly beneficial in

existing buildings where retrofitting wired interconnection may be challenging or impractical.

Flexibility

Wireless interconnection offers flexibility in fitting detectors within a property Detectors can be installed in locations where running wires would be difficult or unsightly, allowing for optimal coverage and ensuring that all areas are adequately protected

Scalability

Wireless systems can easily accommodate changes or expansions to the property without the need for extensive rewiring. Additional detectors can be added to the system as needed, and they can seamlessly integrate with existing interconnected detectors

Reliability

Advances in wireless technology have improved the reliability and robustness of wireless interconnection systems Modern wireless systems are designed to provide secure and stable communication between detectors, minimising the risk of false alarms or system malfunctions

The WisuAlarm WisuLink product series comprises a wireless interconnected network encompassing smoke alarms, heat alarms, carbon monoxide (CO) alarms and a wireless gateway facilitating their connection

Additionally, integral components include a website portal and a mobile application, crucial for offering data visualisation, fault indication and alarm notifications tailored for landlords and end users respectively

QWhat type of UK-specific support do you have in place for end user installers and wholesalers?

We have a growing team covering the whole of the UK and we have UK-specific staff to support our distribution/wholesale partners and deliver training We can also support project tenders and have technical staff in place to answer queries

As you’d expect with the strength of Dahua, we have warehousing facilities globally, and more locally in Birmingham and the Netherlands

BROWSE THE FULL WISUALARM RANGE OF PRODUCTS AT: WWW.RDR.LINK/EBC027

“IT’S THE DETAILS THAT MATTER!”

They say that good things come in small packages, and this little gem from the lighting portfolio of Bedfordshire-based All LED is no exception to the rule The Atom downlight is an extremely versatile unit that offers a range of impressive features

Firstly, the slim, low-profile bezel with 58 - 75 mm cut-out is perfect for retrofit or new installations, meaning the installer doesn’t have to enlarge holes, which we all know can be a pain. The stylish aesthetic ensures that the Atom can blend nicely into any ceiling with a generous 91 mm overall, helping cover any chipped edges or old spotlight stains

Incorporating an easily accessible CCT selectable switch by just slightly pulling down the fixture from the ceiling (without removing it), the end user has the option to cycle between 3000K, 4000K, 6000K colour temperatures with just the flick of a button This technology also means you can buy in bulk for multiple installations then simply change the colour temperature, depending on the room you’re installing them in It’s available in multiple finishes such as Polished Chrome, Carbon Black, Satin Nickel and Polar White, as well as straight

and tilt versions. The adjustable version can be tilted to a maximu of 20˚, which provides the flexibility to direct the light in the place you need it the most The Atom also has lots of different accessories, such as converter plates, multiple plates and plaster in trimless kits

Optimal light distribution assured The Atom features All LED’s proprietary DiamondTec lens technology, ensuring optimal light distribution as well as looking fantastic It is also fully insulation coverable for added convenience

This means that when working in new/modern houses, or on projects where the individual is re-insulating their property, you no longer have to remove sections of insulation or install large intumescent covers, minimising costs on the job further.

Rated at IP65 in both fixed and adjustable models proves the Atom’s durability and suitability for both indoor and outdoor applications such as soffits, and I’ve found the Atom to be perfect for use in bathrooms and wet rooms

It comes dimmable as standard and features All LED’s OptiDim dimming technology that delivers smooth dimming

control with almost any dimmer, even at very low brightness.

With fire ratings of 30, 60, and 90 minutes for timber joists, Staircraft I-joists, and metal web joists, it ensures compliance with fire safety regulations It’s also compliant with moisture, acoustic and air leakage standards

Loop-in loop-out piano key push terminals make life much easier for the installer, and the 72 mm depth is ideal for tight ceiling voids or where pipework might be run due to its ultra compact size. With a rated lifespan of 40,000 hours, plus a five-year guarantee, the Atom is a cracking, versatile solution that is suitable for various lighting projects

Steve Hewish, Approved Electrician at Turrell (Electrical Contractors), reviews the All LED Atom downlight.

CIRCUIT TRAINED

The team at Schneider Electric provide some insight into the evolution of the brand’s circuit protection offering and why it is helping to shape a safer future.

In today’s world, it’s easy to overlook the essential components that keep the inner workings of buildings safe behind the scenes.

Circuit breakers stand as the un-sung heroes; they ensure all electrical components within these structures run smoothly and are safeguarded against electrical hazards to maintain the reliability of the infrastructure

Today’s electricians, contractors, and other industry professionals understand the critical role these devices can play, and Schneider Electric plays a pivotal role in shaping the future of circuit protection

Getting Active

Over the last ten years, Schneider Electric has been at the forefront of circuit protection innovation, introducing products that have re-defined industry standards

The launch of Acti9, a modular circuit protection range tailored to numerous applications across commercial and industrial buildings, offices and care homes, has represented a significant leap forward in electrical safety; the integration of multiple protective features into a single device has set a new benchmark for product reliability and efficiency Building on this success, Schneider

Electric has continued to push the boundaries of innovation with the latest launch of Acti9 Active.

This next-generation of circuit protection solutions incorporates cutting-edge technology, including residual current device (RCD), miniature circuit breaker (MCB) arc-fault detection device (AFDD), and an over-voltage release together with embedded connectivity

Acti9 Active provides comprehensive protection against electrical faults and aligns closely with the evolving needs of modern buildings It is also designed to prioritise energy efficiency; from its eco-friendly design to its advanced analytics and diagnostics, it enables organisations to realise and grow their sustainability credentials

Master plans

In addition to Acti9 Active, Schneider Electric continues to drive innovation with the recent introduction of MasterPacT MTZ Active

This revolutionary low-voltage air circuit breaker is designed to set even higher benchmarks of efficiency, safety, and sustainability – particularly in the data centre field With features such as real-time energy monitoring and

advanced fault mitigation capabilities, MasterPacT MTZ Active empowers data centre operators to optimise energy usage, reduce downtime, and enhance overall efficiency

Electricians and contractors play a crucial role in implementing and maintaining electrical systems that prioritise safety, efficiency, and sustainability

Keen to futureproof this key workforce, Schneider Electric provides training programmes, technical resources, and ongoing assistance from industry leaders. This is to ensure that electricians have the knowledge and tools they need to excel in their field and have the skills necessary to build a safer and greener future

Schneider Electric is proud to be a leader in circuit protection and to carve a path in the pursuit of safety and environmental responsibility Working alongside electricians, we have the opportunity to embrace new advancements and harness the power of technology to create safer, more efficient electrical systems together

WHAT’S YOUR REQUIREMENTS?

Selectivity is one element that designers must consider as part of the coordination requirement detailed in Regulation 536.3 (Fig 1)

Selectivity is defined as, ‘Coordination of the operating characteristics of two or more protective devices such that, on the incidence of an overcurrent or residual current within stated limits, the device intended to operate within these limits does so, while the other(s) does (do) not.’

General requirements

The disconnection of circuit-breakers is caused by either electro-magnetic release or by thermal bi-metallic release (Fig 2) The electro-magnetic release is considered to be ‘instantaneous’ and is wholly dependent on current, while the thermal release depends on both current and time as temperature rises

Whether overload is likely to occur depends on the nature of the load and will not be considered in this article

Under conditions where overload isn’t likely to exist, the only condition requiring consideration is short-circuit, whether that be between live conductors or to earth

Selectivity for overload conditions is detailed in Regulation 536 4 1 2 and for short-circuit conditions in Regulation 536 4 1 3

The designer should take account of the reference ambient temperature (30˚C) for the tripping curves and the load conditions before the overcurrent. Manufacturers should be prepared to give information on the variation of the tripping characteristics where the ambient temperature differs significantly from the standard value (Clause 8 6 3 1)

Selectivity is either:

1. Partial – this occurs where, in the presence of two overcurrent protective devices in series, the downstream protective device affects the protection up to a given level of overcurrent, without causing the upstream device to operate

2. Total – this occurs where, in the presence of two overcurrent protective

Jake Green, Head of Technical Engagement at Scolmore Group, briefly considers one aspect of selectivity as it relates to overcurrent protective devices (OCPD), and in particular circuit-breakers conforming to BS EN 60898.

devices in series, the downstream protective device affects the protection without causing the upstream device to operate

Short circuit

conditions

When determining selectivity between circuit-breakers it’s necessary to consult the data issued by manufacturers. Clause D.4 of the informative Annex D in BS EN 60898 makes it clear that, on request, the manufacturer of the circuit-breaker will provide information on the type and the characteristics of the short-circuit protective device to be used with the downstream device

The standard ranges of instantaneous tripping of circuit-breakers conforming to BS EN 60898 (clause 5 3 5) are shown in Table 1, below.

For example, for a 10 A (In) type B circuit-breaker:

l At 3 x 10 (30 A) the circuit-breaker will not trip instantaneously but will trip after a certain period as the thermal element operates (overload conditions)

l At 5 x 10 (50 A) the circuit-breaker will trip instantaneously (electro-magnetic release)

l At values between just above 30 A

Fig 1 Principle of selectivity

Fig 2 Type C circuit-breaker to BS EN 60898

and below 50 A, the circuit-breaker may operate on the electro-magnetic release or on the thermal trip

A n n e x D ( i n f o r m a t i v e ) o f B S E N 6 0 8 9 8 p r o v i d e s g u i d a n c e o n c o - o r d i n a t i o n u n d e r s h o r t - c i r c u i t c o n d i t i o n s b e t w e e n a c i r c u i t - b r e a k e r a n d a n o t h e r s h o r t - c i r c u i t p r o t e c t i v e d e v i c e a s s o c i a t e d i n t h e s a m e c i r c u i t

For partial selectivity, the current causing the instantaneous operation of the downstream device (instantaneous tripping current) must be less than selectivity limit current (Is) of the upstream device

By way of example, consider the following:

Question: A 20 A Type B circuit-breaker conforming to BS EN 60898 supplies a load not subject to overload conditions What will be the minimum rating of the upstream device likely to provide partial selectivity?

Answer: The instantaneous tripping current of a 20 A device is 5 × 20 = 100 A (5 In) Assuming an upstream device of rating 32 A, the selectivity limit current (Is) must not be less than 100 A That is, the device is required to not operate at 3 In This equates to a fault current exceeding 3 × 32 = 96 A

A 32 A type B circuit-breaker wouldn’t provide selectivity, as at 96 A the 32 A device (Fig 3, Blue and Green band) overlaps with the instantaneous tripping current of the 20 A device

It’s necessary, therefore, to increase the upstream rating to at least 40 A to provide partial selectivity (Fig 3, Orange and Green band). Fig 3 also shows that there’s clear space between the lower limit of the 40 A device (120 A) with the 20 A device (100 A), hence partial selectivity

Even where partial selectivity exists, where the fault current (short-circuit) is of a value that exceeds the instantaneous tripping value of the upstream device as well as the downstream device, both protective devices may still operate simultaneously

If selectivity cannot be achieved by current difference, for example between two quick acting circuit-breakers having similar reaction times, selectivity is to be realised by having some form of time delay.

In conclusion, designers should be aware of their responsibility to provide suitable coordination for devices With protective devices this includes the requirement, where practicable, to create conditions for either partial or total selectivity

The study of selectivity is a complicated one and this article can only provide a simple introduction to certain aspects of coordination

Here’s your chance to win a brilliant prize, courtesy of Elucian by Click.

Click Scolmore has made some recent additions to its Elucian consumer unit range, which are designed to keep electricians up-to-date with the latest units and protective devices to cater for all their installation requirements

These include:

100 A Single Phase Energy Meter: provides a versatile and reliable solution for monitoring energy consumption in residential, solar PV, industrial and utility applications It can be DIN rail mounted into any of Elucian’s consumer units. The energy monitors are single tariff MID certified with two pulse outputs and RS485 Modbus communication protocol offering import and export energy measurement

REC Isolator Switch: designed to make the connection of consumer unit tails to the electricity supply highly secure as well as easier and more convenient

Enclosure-only Consumer Units: supplied unpopulated, there are no pre-fitted circuit protection devices, which gives total flexibility for installers to design a consumer unit to the exact specification needed. The unpopulated range now includes 6, 8, 10, 12, 14, 16, 18 and 22 Way sizes.

Fig 3 Selectivity bands (image courtesy of T J Bratley)

We learn more about why Niglon’s new range of PROTEGO consumer units has been engineered with the electrician firmly in mind.

BOARD MEETING

PROTEGO means ‘to protect’ in Latin, and in developing this range Niglon has sought not just to keep the homeowner secure, but also to make the life of the installer as easy as possible

Boasting many installation benefits, the board was conceived and developed in conjunction with feedback from the trade, with the focus on developing a product with lots of features, including:

1. No more fiddling with lids or poorly fitting boards

Do you use consumer units which warp on a job or which you struggle to fit the lid onto once installed and loaded with devices?

PROTEGO boards are very robust, being made from 1 2 mm steel, and have a softly curved profile, meaning you can eliminate ill-fitting or misaligned boards on the next job The lid of the consumer units are also flush fitting, which aids installations in tight spaces.

2 Quality edging strip which does not pull out

Do you curse when pulling cables through the rear knockouts of the consumer unit?

PROTEGO boards come with a rubberised edging strip with metal inserts which holds its shape, overcoming the annoying installation

problem associated with plastic grommet strip which can easily pull out.

3 A neat and tidy install

Do you like having a neatly dressed board, which is finished in a professional way?

PROTEGO boards come with a free tail gland kit, have extra depth to enable correct dressing of the board, and come with 20 and 32 mm knockouts which are easy to remove A fitted spirit level allows for a quick fit on the level, and longer terminal bars provide a greater variety of wiring configurations. The combi style terminal screws are already backed off, and the din rail has been raised up to allow extra space for cables

4. Safety, safety, safety

Niglon provides a mains switch with dual terminals, reducing the chance of a poor connection and eliminating the need for a secondary cable clamp. A free busbar shield is supplied to every consumer unit and all devices are third party accredited by Semko and TUV to offer extra confidence in the quality of products

BROWSE THE LATEST NIGLON CATALOGUE ONLINE AT: WWW.RDR.LINK/EBC031

GO WITH THE FLOW

Hager's Technical Training Manager, Paul Chaffers, shares the importance of observing protective device terminal markings and discusses the requirements for disconnecting all live conductors, including the neutral conductor for certain applications.

Usually, we consider the current flowing through a protective device to be in one direction only, i.e. from the distribution board to the load But there are requirements to observe for situations where current may flow in either direction through a protective device, such as when a generator is used as an additional source of supply in parallel with another source For such applications a bidirectional device is required

The Wiring Regulations specifically make reference to this topic in Chapter 82 for prosumers electrical installations, where Regulation 826 1 2 2 reminds installers to take account of all possible directions of current flow and polarity

Furthermore, Regulation 134 1 1 requires installers to use proper materials in the erection of electrical installations

Installers must also take account of manufacturers’ instructions for any electrical equipment installed.

Unidirectional

RCD and MCB product standards require that if it is necessary to distinguish between the supply and the load terminals, they shall be clearly marked Hager unidirectional devices are marked “in” and “out” near the corresponding terminals indicating the direction of power

flow For a better understanding see Fig 1

Where unidirectional devices are incorrectly used for applications where the current flows in either direction (micro-generation, battery storage, solar PV etc), it is possible that the device can be permanently damaged and therefore may not offer the correct protection under fault conditions

Bidirectional

RCDs and MCBs which are NOT marked “in” and “out” or “line” and “load”, or with arrows indicating the direction of power flow, are typically referred to as bidirectional devices and are suitable for all applications where power flow may be in either direction, see Fig 2

Other considerations

BS 7671 Chapter 55 deals with “other equipment” and it is here where we find extra measures that need to be applied for installations where generating sets may operate in parallel with other sources.

Requirements to disconnect all live conductors

Most existing single modular RCBOs only switch the line conductor, but there are situations where it is necessary to switch all live conductors, including the neutral

A comparison of the schematic

“

...there are requirements to observe for situations where current may flow in either direction through a protective device...”

diagrams shown in Figs 1 & 2 will show the differences between Hager’s unidirectional RCBO (single-pole) and the new bidirectional RCBO (double-pole) Similar diagrams are located on the side of each RCBO and in the product data sheets provided in the packaging Regulation 551 7 1 requires where an RCD is providing additional protection (in accordance with Regulation 415.1) for a circuit connecting a generator set to the installation, the RCD shall disconnect all live conductors, including the neutral conductor

Fig 3 shows the reasons why it is important to disconnect all live conductors

Fig 1

Fig 2

Fig 3

FURTHER REFERENCES

To obtain further information regarding current flow direction, see BEAMAs Technical bulletin Connection of Unidirectional and Bidirectional Residual Current Devices (RCDs) and Miniature Circuit-Breakers (MCBs) to power supplies e g battery storage, Photovoltaic (PV) systems, Electric Vehicles (EV) to home, a micro-generator, or grid (mains) supply

www beama org uk/resourceLibrary/beama-technical-bulletin---connection-of-unid irectional-and-bidirectional-protective-devices.html

The necessity to disconnect all live conductors is not a new requirement and was addressed in 2007 in the Electrical Safety Council Best Practice Guide on connecting a microgeneration system to a domestic or similar electrical installation (in parallel with the mains supply).

www.electricalsafetyfirst.org.uk/professional-resources/best-practice-guides

and the illustration shows an earth fault being fed by a microgenerator after the single-pole RCBO has operated This will continue for the period of time it takes the microgenerator to shut down due to loss of mains power

From here we can see that this type of work requires careful design to allow the correct selection of protective devices

Another example of where the neutral

requires switching can be found in Section 722 (Electric vehicle charging installations), where Regulation 722 351 3 1 states RCDs shall disconnect all live conductors

Designs which include EV to home technology will also require suitable bidirectional protective devices and chargers to allow energy from the EV’s battery back into the home

Free online CPD

Visit Hager’s Residual Current Devices training course, which covers all of the subjects discussed in this article, plus many more All technical courses are CPD accredited and come with downloadable certificates

GET MORE DETAILS ON HAGER’S RCD TRAINING

COURSE BY VISITING: WWW.RDR.LINK/EBC032

ON THE CHARGE

Simpson & Partners (S&P), the Cotswold-based manufacturer of EV chargers, has incorporated Proteus 3 module, 4 pole RCBOs within its new Business range of chargers This ensures the new range has the correct protection and continues the elegant profile on offer from the S&P Home charging range

In the evolving landscape of EV charging, Simpson & Partners looked to its design background and local environment to expose a gap in the charger market. In 2021 the company launched its Home charging range, which took the market by storm.

Not only did it tick all the charging and protection requirements, but its housing was designed to stand out from others, whilst complimenting modern architectural design and colours

When looking to extend its range and provide an aesthetically pleasing business charger, S&P had to ensure safety and reliability in the first instance.

In addition, and to keep on-brand, the company also wanted to continue the simplistic modern profile from the Home charger. Therefore, selecting the circuit protection devices that were efficiently designed to handle the unique requirements of EV charging was essential

Compatibility with modern chargers

To address this challenge, S&P’s R&D team decided to integrate the award-winning Proteus 3 module 4 pole RCBOs, popular for their innovative design and compatibility with modern charging infrastructure.

These devices switch 3 phases and neutral in a compact 3 module device

Working closely with the Proteus Technical Team, the devices were designed into the charger to provide electrical and personnel protection in accordance with the latest electrical regulations

The 3 module, 4 pole RCBOs perfectly integrate into the charging system, ensuring optimal performance and

In this case study article, we learn more about how the Proteus 3 module, 4 pole RCBO is providing critical protection for the latest range of EV chargers.

protection against electrical faults

This innovation not only enhances the safety of the new Business chargers, it also left space for an additional MCB to be fitted to power the integrated network module, allowing the ability to daisy chain Ethernet between the free-standing units

By utilising the Proteus 3 module, 4 pole RCBO, S&P successfully continues to incorporate a unique approach to its EV charger design into the latest product range As a result, it has further strengthened its offering while ensuring optimum safety for customers

Chas Beecham, COO at Simpson & Partners, said: “In our quest for innovation at S&P, space constraints led us to explore Proteus 3-module-wide RCBOs, enabling horizontal positioning and addressing thermal concerns. Committed to cutting-edge protection, we'll continue collaborating with Proteus to come up with the latest solutions ”

REPEAT DEFENDER

QRegular readers will recognise that the Guardian device won a PE ‘Top Product’ award at the end of last year. Give us a refresher on the device and what it’s designed to do. The Guardian is a power and protective conductor monitoring device which is designed to monitor the electrical supply to, and the wiring infrastructure of, the building into which it is installed

It can detect faults such as high and low line voltages, loss of Neutral, broken PEN conductors, and stray voltages on any bonded service and structure such as gas pipe work, earth rods and metal fences etc.

The device can be used for monitoring only but can also isolate loads, if required It can also connect to its own portal where the user can view the site remotely From here alerts can be sent to the user via SMS and email

QHow has the general interest in the product been since launch and are you seeing an uptake in its installation and use?

All new technology takes time to build, however the feedback on the device has been extremely encouraging, as most electricians are aware of the dangers and damage caused by broken Neutral events

We’re seeing the device being specified into projects and have had huge interest from FM companies along with

the telecoms industry, rail, data centres and EV chargepoint installations, to name a few We’ve now launched the product globally and have lots of interest from the USA, Australia and Norway. It seems that broken Neutrals really are an issue all around the world.

QAre there any projects or jobs where it has been a particular success so far?

Outside the standard EV protection installations there have been some very interesting enquiries about different uses for the device, including one from a marina where they’re looking to use the Guardian to monitor for stray voltages on metal work that may be coming from the vessels in the water

QHave you made any tweaks to the design or applications based on end user feedback?

We’re constantly looking at ways to improve all products and have already made some tweaks to the way the device displays some of the faults to make it easier for the electrician to diagnose

Fortunately the firmware can be updated over the air so all product, if connected to the portal, will benefit from the ongoing developments to the firmware

Additionally, we’ve also designed a pre-wired enclosure to make the product simple to retrofit so it’s now available in

this version as well as a standard panel mounted meter.

QAre there plans to develop the Guardian further in future, and if so, what will this potentially mean in terms of functionality?

Further updates to the firmware are planned in the next few months that will improve the functionality of the device, including the ability to remotely isolate loads and calculating and alerting of phase imbalance

This could be down to distribution boards having a heavily loaded phase (perhaps lots of large single phase loads, such as heaters), so by monitoring and alerting the user this could help prevent excessive wear on three-phase motors and help reduce energy consumption

The Guardian technology is currently being built into a portable test meter whereby electricians can test for stray voltages on conductive items that are not bonded but may become inadvertently live

PROTECT YOUR POWER SUPPLY!

Win one of four Electrical Lockout Kits from Kasp.

Safe isolation of an electrical network is a fundamental part of an electrician’s role and Kasp Lockout devices provide a crucial and reliable way to prevent accidental activation

Kasp is a leading security padlock, chain, and cable brand, created by Carl Kammerling International, and has a specially designed range to protect electricians and their colleagues from electrical accidents at work

The Kasp Lockout range safeguards against a sudden release of energy, locking off energy sources using padlocks and physical security devices, making it an essential piece of kit for any electrician completing maintenance and repair work.

The Kasp K81300 Electrical Lockout Kit contains everything you’d need to safely lock off a circuit breaker Fitting neatly into a sturdy red pouch with a carabiner for hands-free access, the kit features a 40 mm red vinyl coloured brass padlock with brass shackle, a 25 mm brass padlock, a lock off hasp, a tagout marker pen, and a danger tag

This compact kit can handle a broad range of circuit breakers, including those over 60 amps, making it invaluable in a whole host of electrical situations.

THE INNOVATION GAME

By utilising cutting-edge electronic switching technology, the SENTRON ECPD (Electronic Circuit Protection Device) electronically switches off circuit faults if errors occur and, if necessary, trips the mechanical isolating contact downstream. Until now, disconnection was handled purely through electro-mechanical elements

SENTRON ECPD enables completely new approaches to electrical planning, maximising safety, flexibility and delivering enormous space and energy savings compared to conventional solutions Its features and benefits include:

1. Multifunctional

The smart SENTRON ECPD offers extra functionality in one compact design, saving space and costs The range of functions can be customised as required with new functions easily activated on the SENTRON ECPD without having to purchase a new device and functionally adapt it into the circuit

The unit can be adjusted as required and adapts perfectly to the requirements of the application, with regard to rated current, tripping limits or behaviour These properties offer major planning and cost advantages

For example, circuits can simply be designed based on the rated current of the loads instead of the significantly higher inrush current peaks that occur briefly with certain load types, such as LED lights

This reduces complexity as well as planning and installation efforts and saves on materials such as copper

2. Ultra-fast

In the event of a short circuit, the SENTRON ECPD is claimed to disconnect up to a thousand times faster than traditional circuit breakers, minimising the short-circuit energy

The product also offers wear-free switching, which increases the service life of systems and reduces maintenance and repair costs Additionally, the integrated cyclical self-test (including the integrated RCD function) raises safety to an entirely new level.

3 Reduce operating costs and downtime

SENTRON ECPD offers full transparency on energy consumption in the final circuit through radio-based communication with the SENTRON Powercenter 1000 and 3000 gateways This enables measurements to optimise systems and processes, which in turn allows for efficient reductions in energy and operating costs.

Uniquely, it’s possible to perform detailed condition monitoring of the applications at the final circuit level, substantially increasing availability and operational reliability

The large volume of measurement data enables the detection of irregularities and deviations and creates a reliable planning

Siemens has recently introduced what is claimed to be one of the world’s most innovative circuit protection devices. Here we learn more about the SENTRON ECPD.

basis for preventive maintenance

The unit can be easily integrated into higher-level systems by using the open Modbus TCP standard.

SENTRON ECPD makes it possible to carry out remote diagnostics and remote switching during normal operation as well as in the event of a fault This offers significant benefits, especially for remote applications without direct on-site support In addition, it’s easier to localise and identify faults by differentiating the cause of the fault

4. Sustainable

SENTRON ECPD combines multiple product functions in one device, is 90% lighter than the devices otherwise required and demands up to 80% less space in the distribution board, eliminating the need for costly structural measures

Andreas Matthé, CEO of Electrical Products at Siemens Smart Infrastructure, said: “With this launch it’s now possible to benefit from several functionalities in one product and to activate them as required by the individual application or adapt them if needed All of this, combined with solid-state switching technology enables up to a thousand times faster, wear-free switching ”

Strip search sees Newquay Sports Centre turn to ROBUS

Lighting has the power to transform spaces, shaping the way we perceive and interact with our surroundings Whether it's a cosy reading nook, a vibrant art gallery, or a bustling city street, lighting sets the mood and atmosphere, influencing both aesthetics and functionality

A perfect example of this is the lighting installation ROBUS recently provided for Newquay Sports Centre in Cornwall The client wanted a modern design for their spin class, and ROBUS knew exactly what would satisfy these requirements: VEGAS LED Strip

Knowing the rules so you know when to break them

Generally, when installing dotted LED strip, there are a few design guidelines to follow For example, dotted light is understood to work best for concealed lighting fixtures, such as backlighting for a headboard, bar top, TV screen, table edge, mirror, etc If the dotted LED strip is visible, then it would be common practice to use an extrusion with a diffuser to create a continuous light effect

This is all good practice, but ROBUS knows how to tailor its lighting design to the location and the client’s desired aesthetic

A spin class is a very distinct environment, providing a high-energy and dynamic experience while being equally demanding and exhilarating What better way to match

this sense of energetic continuous motion than with a dotted LED strip tunnel offering colour-changing capabilities?

The in-house Lighting Design team at ROBUS recognised that this industrial-style gym room was perfectly suited to the dotted effect of VEGAS RGBW Strip

What is VEGAS LED Strip?

VEGAS transformed this repurposed room into a truly unforgettable experience, so let’s delve into this lighting to see just how versatile it is:

l VEGAS comes in RGB, RGBW CCT1, white CCT1 and tuneable white, from 2700K to 6500K

l Available in IP20 and IP67 for indoor and outdoor applications, it’s suitable for many different environments such as bars and clubs, restaurants, displays, hotel and office receptions, showrooms, exhibition stands, and, of course, gyms!

l The LED strip can be cut every six LEDs and reconnected as required

l LED density options are 30LED/m, 60LED/m, and 120LED/m with a wide range of wattages from 4 8W/m to 19 2W/m

l LED strip remotes and wall-mounted controllers allow you to customise colour and dimming remotely, creating an atmosphere to suit every mood

How the lighting design was achieved

ROBUS Project Engineer, Ben Davis, worked closely with Newquay Sports Centre to ensure the final result matched its vision For this installation, 110m of VEGAS 14 4W/m LED strip at 60LED/m was used, transforming a simple room into a memorable gym session Six drivers, three amps and three controllers were required to accomplish this lighting design, providing maximum customisability for the client

The University of Chester has installed Luceco’s flagship backlit LED solutions in its brand new student accommodation, Sumner House.

The university originated as the first purpose-built teacher training college in the UK and continues to expand with extensive student demand and sites across Chester, Warrington, Shrewsbury and Birkenhead.

The 2023 refurbishment of the former hotel in Chester city centre has brought high quality, modern design to the University’s brand new full-board and self-catered student accommodation

Luceco was delighted to design and supply Contour Suspended lighting in various sizes in multicolour and black, creating a stylish and striking lighting solution for the communal seating area at Sumner House

Creatively installed in intervals between sculptural wooden slats, with further colourful lights artistically suspended to create a focal point, Sumner House shows the versatility of Luceco LED lighting solutions and the myriad of creative possibilities for installation

Contour Suspended lighting is a versatile option, emitting continuous gentle, balanced,

Luceco passes the test in University challenge

and low-glare lighting, making it ideal for both commercial and domestic settings, and perfect for communal areas

Providing downward illumination with up to 107 Llm/cW, the lighting is accompanied by a full range of connectors to match any space

Whilst Contour Suspended lighting is readily available in black and white finishes, Luceco works with clients to supply colourful sprayed options to best suit their requirements

This lighting solution was paired with LuxPanel Extra 600 x 600 in other areas – soft glowing panels that gently illuminate the space whilst providing an ideal level of light for working

Offering increased performance in terms of lumen per watt and balanced light distribution, the backlit LED module boasts high efficiency optical design, offering efficacy up to 145 Llm/cW With TPa rated diffusers, long life drivers and IP65 protected options, LuxPanel extra is a natural choice for public spaces

BROWSE OR DOWNLOAD

THE LATEST LUCECO SPECIFICATIONS

BROCHURE AT: WWW.RDR.LINK/EBC038

USB-C wall sockets meet the need for speed

While the number of portable devices requiring USB charging continues to increase, most are only supplied with the charging cable and no plug adaptor.

Answering this need, British General’s (BG Electrical) new fast charge USB-C sockets offer installers a great upsell opportunity and are ideal for customers in both domestic and commercial settings.

The new wall sockets feature high-speed, smart charging USB-C ports, whilst retaining USB-A ports for compatibility with legacy cables

The super-fast 45 W is capable of charging high power devices such as laptops, tablets and video equipment as well as smartphones and other USB devices

For those who simply need to charge their smartphone and lower powered devices, there’s also a 22 W fast charge option which can deliver a 50% charge to mobile phones in just 30 minutes

The super-fast 45 W and fast charge 22 W sockets will be available across multiple BG Electrical ranges including

the Nexus Metal, White Moulded, Evolve, and Flatplate ranges of colours and finishes There will also be a smaller range of 15 W and 12 W sockets in the White Moulded and Nexus Metal finishes for those who don’t require fast charging and are working to a lower budget

Thinking smart

Smart charging functionality in these sockets allows for safe and efficient charging of devices, using variable fast technology to protect and prolong battery life by only providing the power a device needs Once a device is fully charged, the socket will go into standby mode, saving costs on unnecessary power and preventing long term damage to batteries

This more sustainable charging solution is a great option for consumers who have limited space near sockets or prefer a more minimalist look The integrated ports reduce the need for additional 3-pin plug adapters or extension leads and, as such, reduce

electrical waste for the environmentally conscious

BG USB sockets feature colour-coded in-line terminals with backed-out captive screws They fit a 25 mm back box, making them easy to install The sockets are certified to the latest British Standards and carry the Asta Diamond mark, so you can install with confidence.

Hazel Whittingham, Product Manager at BG Electrical, says: “Our new USB-C wall socket range has been created to provide a safe and sustainable way to integrate USB charging into existing wall sockets

“The British General brand is trusted by both electrical installers and their customers, so this new range has been built on our proven base design in a variety of finishes, with smart charging technology for convenience and peace of mind.”

CED ELECTRICAL

Airmaster Portable 3-in-1 Air Conditioner

The long established Airmaster cooling range already boasts 9,000 and 12,000 BTU A/C units with App controlled versions, as well as major additions in 2023 of a portable air purifier, a dehumidifier and an evaporation cooling tower. The brand has now launched a highly versatile, yet portable air conditioner that can simply cool, fan or dehumidify in one single unit This compact and modern product operates at a low noise level (45dB) and, finished in white, is designed to integrate with any décor As a floor standing unit, it is easily moved around with omni-directional wheels and comes with flexible smart controls either on Wi-Fi via a mobile phone App or with a supplied battery operated remote controller Fitted with an R290 refrigerant, it comes with 1 7 m of cable, a 13 A three-pin plug and a 1.5 m long exhaust pipe.

SNICKERS WORKWEAR 4-way Stretch Shorts & Logo T-shirts

When the temperature rises on an active workday, Snickers Workwear’s new work shorts help you stay ventilated and comfortable all day, every day

Combining 4-way softshell stretch fabric with sustainable Sorona 2-way stretch fabric, these shorts have windproof sections plus ventilating areas for enhanced comfort and freedom of movement With body-mapping designs that deliver superb functionality, the shorts come in range of stylish colour ways to compliment the new Snickers Workwear 100% cotton ‘logo t-shirts’ which will energise and brighten your workday

V

We’ve got five Proof Vision in-wall electric toothbrush chargers with shaver sockets to be bagged this month.

re you a professional electrician or installer keen on showcasing cutting-edge bathroom technology to your customers? Or perhaps you're looking to upgrade your own home with a sleek, in-wall, wire-free toothbrush charging solution? Look no further than this great prize draw!

We ’ v e t e a m e d u p w i t h P r o o f V i s i o n t o o f f e r f i v e r e a d e r s t h e c h a n c e t o w i n a T B C h a r g e e l e c t r i c t o o t h b r u s h c h a r g e r w i t h s h a v e r s o c k e t ( P V 1 2 P ) f o r t h e i r o w n p e r s o n a l

u s e o r t o e n h a n c e t h e i r p o r t f o l i o o f p r o d u c t s t o s h o w

p r o s p e c t i v e c l i e n t s

The Proof Vision in-wall toothbrush chargers are unique waterproof electrical accessories designed to be installed in the bathroom and are compatible with Oral-B electric toothbrushes

The innovative design means users can easily charge their toothbrush and electric shaver together

Simple to install at home or for your client, the Proof Vision charger eliminates trailing wires, saves space and reduces clutter. Not only is the Proof Vision charger functional, it’s also stylish. You can choose the standard white faceplate or customise your prize with one of Proof Vision’s optional finishes

Faceplates come in polished steel, brushed steel, matt black or a brand-new brushed brass finish to complement a variety of bathroom colour schemes

W. R D R . L I N K / E B C 0 4 1

Lewden CU launch will fill a black hole

Product development at Lewden is a collaborative effort, and the insights of installers and electricians are instrumental in shaping the brand’s offerings

The release of the first ever consumer units in black colour is a testament to Lewden’s commitment to continuous improvement driven by invaluable feedback from installers and electricians

The black consumer unit is a brand new, sleek addition to the popular Pro consumer units range Matte finished in black colour, these consumer units with a stylish, aesthetically pleasant design, will fit seamlessly into a home’s décor This attractive new addition will meet the evolving needs of installers while adding a touch of e e

installation

Pre-populated with Type 2 SPD, the 100 A main switch unit with round knockouts is available in two enclosure sizes – 13 modules and 22 modules – with 9 and 18 usable ways respectively It can be paired with a comprehensive range of circuit protection devices and accessories to meet the needs of every nstallation. A selection of ound knockouts 20, 25 and 32 diameter des complete lity for installing cable glands, ts, cable ets and for ating SWA final cables. The ular rear ut design with its ear grommet

p j e number of cables entering the enclosure

The ease of installation that comes with Lewden consumer units is worth a mention with useful features like extra wiring space, retained front cover screws that help to prevent loss during installation, and a locking system made in-house from bespoke requests to restrict unauthorised access to the consumer units.

A unique feature that is gaining rapid popularity among installers and wholesalers alike is the availability of extra-strong magnets, exclusively designed by Lewden These magnets securely hold the consumer lid open during installation, making the process smoother and more efficient

Additionally, Lewden offers a range of accessories including mains tail clamp, multi-function DIN rail blanks, and pierce-able cable grommets for maintaining IP rating of the consumer unit, etc

CLICK SCOLMORE Issue 15 Wiring Accessories & Circuit Protection Catalogue

The Click Scolmore Issue 15 Wiring Accessories and Circuit Protection catalogue is now available and brings together all products in the extensive Click range into one, easy to access reference guide It includes the very latest additions across the Click range including new RCD sockets and LED indicator products to the Mode range – a new antique brass finish to the Definity Complete range, plus new Part M unswitched sockets, as well as USB-C sockets and modules Also featured is a range of new products added to the expanding Elucian circuit protection collection, which includes a 25 A rated RCBO, energy meters and unpopulated consumer units

WERNERCO

Fibreglass Work Platform

TIMEGUARD

Weathersafe Vision SRCDs

Electric barbeques and garden tools all need regular mains power, and purpose-installed outlets are alway going to be preferable to leads trailing through doors and windows Even if a customer already has outdoor sockets, it’s worth giving them a health check as there’s often room for an upgrade to add RCD protection. Why not go the extra mile for your customer and choose a replacement that looks good on the wall and can be relied on to stay looking that way? The polycarbonate windows in the Weathersafe Vision from Timeguard will keep their looks and stay clear for years Of course, their main purpose is to let users see the on/off status of the supply at a glance, but the patented neoprene seals will also keep the IP protection intact for years

METREL MI 3115 PV Analyser

Metrel has launched the MI 3115 PV Analyser, a multifunctional electrical installation safety tester for testing 1,500 V photovoltaic installations The unit comes with an array of versatile accessories for comprehensive testing, including a remote unit for measuring irradiation and cell temperature (of photovoltaic modules) Empowering electrical inspectors to test even the largest 1,500 V photovoltaic systems with confidence and ease, key features include: measurements of insulation and the I/U characteristic in 1,500 V PV systems in a single instrument; auto test function for IEC/EN 62446 category 1 tests; wireless remote unit for measuring (and logging of ) irradiation and cell temperature of PV modules; calculation of STC values and comparison with nominal data; PV modules database handler; correction of previously wrongly entered parameters of an already executed measurement or a group of measurements.

WernerCo has announced the launch of its new fibreglass work platform, available in both its ZARGES and Werner brands, ideal for low-level jobs on-site. Constructed using durable and non-conductive fiberglass legs, which are highly resistant to weathering, the platform ensures safe working while around electricity Its square, extra-large, slip-resistant 0 6 m x 0.6 m platform is ideal for professionals who require a comfortable and spacious work surface, as well as for those who require a compact design for easy storage and transportation Added safety is offered thanks to its slip-resistant feet, splayed base and easy to use locking hinges. The platform, which boasts a maximum load capacity of 150 kg, also offers non-conductive fibreglass legs, making it safe for work around electricity The unit, which features a robust design for durability, offers a height of 0 50 m, with a safe working height of 2.25 m (based on the height of an average person at 1.75 m), and weighs just 6 1 kg Its folded dimensions come in at 0 70 x 0 62 x 0 18 m

Workwear just got lighter, stronger and more flexible

The MASCOT CUSTOMIZED range of workwear is light and comfortable like sportswear, innovative and durable like workwear, and features a high proportion of recycled materials It’s designed to be even lighter, even stronger, and to have even more stretch

A circular approach

The production of workwear inevitably leaves an environmental footprint along the value chain. As a result, MASCOT is working on integrating circularity into the development and production of products

by utilising recycled materials, reducing overall consumption and over-reliance on new resources.

The MASCOT CUSTOMIZED range contains workwear made from recycled materials that have an extremely high wear resistance There are trousers and upper-body garments where the primary material is made of recycled polyamide, which comes from surplus materials from textile production

This doesn’t mean that used clothes have been turned into new material. It’s a case of surplus materials from the textile production process, such as face material, yarn, and similar, being recycled into new fabric

Long-lasting products

Many of the products in the range are also made from recycled polyester This material comes from recycled plastic material, e.g. used plastic bottles, which are broken down and used again, or other plastic materials that are broken down to a granule and reused as a new resource

A second way to consider the environmental impact is to create long-lasting products This is why high quality and durability are central to the MASCOT CUSTOMIZED range

Workwear is exposed to many elements and surfaces throughout a working day; therefore, it’s important to

have a guarantee that it will last. The materials used in the range have undergone extensive testing at MASCOT-owned laboratories before being put into production

Additionally, the brand uses test users to trial the finished products in everyday working environments Collaborating with the individuals who spend all day in range can withstand wear and tear and ensures wearer satisfaction

Pick a pocket or two Holster pockets can serve as an additional toolbox for users, so MASCOT CUSTOMIZED has created several types of holster pockets to suit various professions and work needs They’re made with Cordura which helps the holster pockets last longer while securing the heavy and sharp objects that they hold.

The unique Click Pocket System is a new and innovative way to ensure your holster pockets stay in place in your preferred position You can place the pockets where you prefer with a simple click, and also decide how many you use in any given work situation By having removable holster pockets, the lifespan of the trousers also increases

ROBUS

Outdoor Lighting Range

Landscaping season has kicked off and the ROBUS outdoor lighting range has grown with over 30 new product SKUs added this year Welcome a new array of corrosion-resistant spike lights in contemporary and classic styles, all compatible with GU10 lamps for easy customisability ROBUS has also introduced a diverse selection of wall lights, offering a wealth of directional lighting options for every preference and trims to match each aesthetic Discover the new marine-grade stainless steel ground light, perfect for outdoor sheltered areas and indoor kickboards ROBUS is on a mission to make your life easier, so contractor-led designs have been incorporated into the new range of bollards by adding a pre-flex to all luminaires and extra space to conceal your junction box All luminaires come with a two-year on-site warranty

OVIA

Issue 5 Catalogue

KNIGHTSBRIDGE

SpektroLED EVO Downlight

The new SpektroLED EVO downlight from Knightsbridge is an advanced evolution of the company’s popular and innovative SpektroLED. Building on the versatility and flexibility of its predecessor, EVO offers selectable wattages, colour temperatures, six interchangeable bezel finishes and comes in three versions: fixed, tilt and smart When launched, the configurable SpektroLED downlight represented a huge leap forward in versatility and choice for lighting projects, doing away with the need to specify multiple LED lamp types Expanding these permutations of wattage, colour temperature and bezel choice, the ultra-low profile SpektroLED EVO Fixed, Tilt and Smart offers a 108-downlights-in-one range solution. Depending on the required illumination, either 5 W (up to 465 lumens) or 7 W (up to 795 lumens) can be pre-selected via a switch on the lamp body Once chosen, there are four CCTs available – 2700K, 3000K, 4000K and 6000K – with the desired colour temperature also selected by a sliding switch The LED beam angle is 60°and the tilt variant can be adjusted to 90° as required Further customisation is then possible through the bezel options that allow the lamp to complement or contrast with a room’s décor or colourways

ATC ELECTRICAL Hospitality Range Brochure

ATC has announced the release of its new hospitality brochure, which is available now Featuring the brand’s range of electric heating and hand drying products, the brochure demonstrates and gives advice on how you can fit out a variety of hospitality settings, including restaurants and cafés, washrooms, guest bedrooms and guest bathrooms, utilising the vast array of solutions on offer. ATC understands that budgets can vary, so for each application a ‘Value Fit Out’ and ‘Premium Fit Out’ option is available to suit every budget size Products featured in the brochure include: smart electric heaters, digital electric heaters, high speed hand dryers, outdoor heaters, commercial heaters, bathroom heaters, thermostats and controllers.

Ovia has released Issue 5 of the Ovia Lighting Catalogue which showcases innovative new launches and draws attention to the company’s concerted efforts to contribute to the lighting industry’s transition to a circular economy. The company is working towards making sure all of its Inceptor luminaires meet the requirements of the TM66 Assured Product Verification Scheme - an innovative initiative developed and fulfilled by the Lighting Industry Association (LIA) and endorsed by CIBSE, whose aim is to advance circular economy practices within the lighting industry Among the raft of Ovia’s TM66 verified products is the newly launched Inceptor Milli, an innovative IP65-rated, dimmable 4 W and 6 4 W fixed, fire-rated downlight that offers a range of features at the flick of a switch

All LED strip lighting options offer a Seamless approach

Both the Seamless COB LED Strip and the Seamless-Pro COB LED Strip from All LED offer exceptional features, making them top choices for lighting solutions; the main difference being that the Seamless-Pro allows for larger maximum lengths

Let's take a look at some of the comparisons between the two:

1. Continuous (and even dotless) light effect

Both strips provide a seamless and uniform illumination without any visible dots or gaps, ensuring a visually pleasing lighting experience

2 High CRI 90+

With a high Colour Rendering Index (CRI) of 90 or above, both strips accurately render colours, making them ideal for applications where colour accuracy is crucial, such as retail or art displays.

3. Wide range of colour temperatures

Both strips are available in a variety of colour temperatures including 2700K, 3000K, 4000K, and 6000K, offering versatility to suit different environments and preferences

4 Mains dimmable with dimmable LED driver

Both strips can be easily integrated with dimmable LED drivers, allowing for adjustable brightness levels to create the desired ambiance and save energy

5. Maximum lengths and cut points

While the Seamless supports a maximum length of 5 m powered from a single end and 10 m powered from both ends, the Seamless-Pro offers extended lengths of up to 10 m powered from a single end and 20 m powered from both ends, providing flexibility for larger installations.

Additionally, both strips feature 50 mm cut points for precise customisation

6. LED density

The Seamless COB Strip boasts a higher LED density of 480 LEDs/m, ensuring even brighter illumination, whereas the Seamless-Pro COB Strip offers 420 LEDs/m, balancing brightness with efficiency

7. Customised bespoke service

Both strips offer a customised bespoke service, allowing for tailor-made solutions to meet specific project requirements, ensuring optimal performance and integration

Whether you choose the Seamless or the Seamless-Pro ranges, you're guaranteed a premium lighting solution with exceptional quality, versatility, and customisation options to suit diverse applications

COLLINGWOOD LIGHTING Electricians’ Guide To Landscape Lighting

Collingwood Lighting has published a guide to help electricians win business from landscape lighting as both homeowners and hospitality businesses seek to use their outdoor space as the weather warms up The guide explores how to create an attractive and safe outdoor space, providing both function and ambience It looks at how to approach an overall design and details what you’ll need to consider for different areas It breaks down all you need to know for lighting the outside of a building, an outdoor entertaining or eating area, the garden, and picking out details such as lighting steps, paths and water features It also highlights what you need to consider from the lighting, such as the angle of the beam, IP ratings for different areas, the use of low voltage drivers and different control options

MARTINDALE ELECTRIC Socket Tester Selection Guides

UNICRIMP Earthing Plates

Unicrimp has added new earthing plates to its comprehensive Q-Crimp cable accessories range Brass earthing plates are designed to provide a low-resistance path to the earth, allowing electrical current to be safely dissipated into the ground in the event of a fault or short circuit The new Q-Crimp single and double brass earthing plates are suitable for Unicrimp’s Q-Nect IP66 junction boxes and for earthing 20 mm brass glands. Unicrimp recently expanded its cable glands range which now includes armoured industrial brass cable glands and nylon cable glands that are offered in a variety of BW, CW & AE1W and all manufactured to the latest approvals and BS 6121 standard

PROTEUS SWITCHGEAR 1 Module DP MCBs

The latest circuit protection device from Proteus can provide the installer with a considerable saving on time and space within their installation The range consists of 1 module, 2 pole switching, MCBs switch phase and neutral conductors all within a single module body This allows a standard MCB board with a 3 phase busbar to be fully fitted with switched phase and neutral MCBs, saving a considerable amount of time, space and money. The new DP MCBs follows the consistent Proteus CPD design, allowing them to be fitted to any Proteus MCB board The MCB is fitted to the MCB busbar using the bottom busbar connection screw and the neutral is connected to the neutral bar via a blue ‘flying lead’. Load cables are terminated at the top of the MCB to terminals marked ‘L out’ and ‘N out’ To ensure all installations are accommodated, the new DP MCBs are available in 6, 10, 16, 20, 25, 32, and 40 A ratings

Martindale Electric has released two definitive guides for selecting the perfect socket tester for both standard and industrial applications Presented in a flowchart format, each question is easy to answer with a simple ‘yes’ or ‘no’ Following the chart completion, you’ll then be taken to the ideal socket tester for the job, including:

l The CP501 Classic Check Plug 230 V Socket Tester which can identify 28 distinct fault conditions using three LEDs with fault codes displayed.

l The EZ365 Socket Tester with Non-Trip Earth Loop Test, 30 mA RCD check and polarity swap test

l The CP301 16 A and 32 A Industrial Socket Testers which identify seven fault conditions with bright LED indication of the wiring status

l The PC105 16 A & 32 A 3 Phase Industrial Socket Testers which perform seven wiring condition checks, Phase Sequence Indication and Neutral/Earth check

CONNECTED chargepoint will go down a STORM

CTEK has unveiled CHARGESTORM CONNECTED 3, its most advanced chargepoint to-date, which is ready for the next era of EV adoption including Vehicle-to-Grid (VTG) bidirectional charging and ‘plug & charge’ automatic vehicle identification

CHARGESTORM CONNECTED 3 (CC3) incorporates the latest hardware and software innovations ready for easy installation and smart charging today, plus it’s primed for the possibilities of tomorrow’s EV energy ecosystem with next level connectivity and control

CTEK has already sold more than 100,000 CHARGESTORM CONNECTED series chargepoints in the UK, its home market Sweden and elsewhere in Europe

Designed for ease of installation and use, CC3’s robust anti-tamper enclosure and advanced cyber security features, plus its dual socket options and up to 22

kW charging, make it ideally suited to multiple chargepoint installations at destinations, car parks, apartment blocks and workplaces

UK regulations compliant

Fully compliant with today’s UK regulations governing chargepoints, each CC3 has a unique password, tamper alerts and encrypted communication It also meets the ISO15118 standard so is primed for the upcoming V2G and V2X (Vehicle to Everything) revolutions

It supports the latest OCPP 2 0 1 standard (Open Charge Point Protocol), ensuring smooth interaction with a myriad of third-party hardware and software, cementing its position as a versatile and future-ready charging solution

CC3 breaks new ground in connectivity

In-built Wi-Fi enables seamless installation, networking and wireless load

balancing. The optional 4G modem uses less power to provide uninterrupted connectivity, independent of traditional network setups, while dual ethernet ports make future networking possible

Incorporating CTEK’s Nanogrid dynamic load balancing technology, CC3 ensures optimal power distribution between EVs and with other local power demands to enhance both efficiency and safety

For installers, the unit appears alongside a redesigned wall mounting bracket with reconfigured punch-out holes and daisy chain capabilities for network and power cabling, all designed for an efficient and streamlined install Each CC3 variant supports both one- and three-phase electricity supplies.

Daniel Forsberg, CTEK’s Marketing Manager EVSE, said: “The CHARGESTORM CONNECTED 3 is more than just an EVSE; it’s the embodiment of a synergy between state-of-the-art technology and user-centric design

“We're not merely charging vehicles –we're fuelling the journey towards a more connected and efficient e-mobility future ”

CAUGHT ON

C AM E RA

AC ELECTRICS: THE ELECTRICS HAD BEEN TRIPPING AT A NEWLY INSTALLED KITCHEN WITH TWO INTEGRATED OVENS THAT HAD BEEN WIRED ON PLUGS, EVEN THOUGH THE INSTRUCTION BOOKLET SPECIFIES THAT THEY NEED HARDWIRING IN!

BASSI ELECTRICAL: WE WERE CALLED TO CHECK OUT THIS SHOWER UNIT THAT STOPS WORKING WHILE YOU’RE TAKING A

GEORGE ROBERTSON: SO, THAT’S WHY THE LIGHTS DON’T WORK ?

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.

ALL LED Ltd ...........................................outside back cover

www.rdr.link/EBC100

ATC Electrical ..............................................................page 83

www.rdr.link/EBC101

Aurora Ltd .....................................................................page 60

www.rdr.link/EBC102

BG Electrical Ltd ...........................................................page 8

www.rdr.link/EBC103

Carl Kammerling International Ltd ...............page 43

www.rdr.link/EBC104

Castline Systems ........................................................page 85

www.rdr.link/EBC105

CHAUVIN ARNOUX UK Ltd ...................................page 72

www.rdr.link/EBC106

CMD Ltd ..........................................................................page 20

www.rdr.link/EBC107

Collingwood Lighting Ltd .....................................page 40

www.rdr.link/EBC108

www.rdr.link/EBC109

C-TEC Ltd ...................................................................pages 4,

www.rdr.link/EBC110

CTEK Sweden AB .......................................................page

www.rdr.link/EBC111

www.rdr.link/EBC112

Di-LOG

www.rdr.link/EBC113

Electrical

www.rdr.link/EBC114

(ECA) ...page 27

Electrorad UK Ltd .....................................................page 11

www.rdr.link/EBC115

ELEX ..................................................................................page 80

www.rdr.link/EBC116

Elite Security Products Ltd .................................page 85

www.rdr.link/EBC117

Hamilton Litestat ......................................................page 35

www.rdr.link/EBC118

Haverland UK ..............................................................page 64

www.rdr.link/EBC119

Hultafors Group UK Ltd ...........................................page 6

www.rdr.link/EBC120

IDEAL INDUSTRIES EMEA ....................................page 36

www.rdr.link/EBC121

Lewden Ltd ...................................................................page 72

www.rdr.link/EBC122

Live Electrical Distribution UK Ltd ................page 28