With less than a week to go until the DPC for Amendment 3:2024 to BS 7671:2018 closes, Mark Coles, Head of Technical Regulations at the Institution of Engineering & Technology (IET), gives an update and dispels a myth going on in the industry. We announced the Draft for Public Consultation with BSI on 8 May ...

The post Amendment 3:2024 to BS 7671:2018 – Draft for Public Consultation (DPC): Dispelling The Myths appeared first on Professional Electrician.

Free to download and available to all NICEIC certified businesses, the NICEIC Pocket Guide App houses a bank of 35 technical reference guides, all updated to BS 7671:2018+A2:2022 where relevant. Also included are handy calculators for checking Zs values, Adiabatic Equations, Conductor Resistance and Length and Design Current. Fully searchable and clearly displayed, these engaging ...

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The experts at NICEIC consider the effect of ambient conditions and installation methods when determining minimum live conductor sizes. BS 7671 often specifies a minimum cross-sectional area for live conductors and for the purposes of resistance to mechanical damage likely in a particular application or environment. In most cases, the limiting factor is current-carrying capacity. ...

The post Factors affecting the current-carrying capacity of live conductors | NICEIC appeared first on Professional Electrician.

Jake Green, Technical Engagement Manager with Scolmore Group, looks at RCDs in general and highlights the necessity of a time delay device when selectivity between RCDs is needed. The principle of operation of an RCD is well understood. The live conductors are wrapped around a toroid that is readily magnetised and demagnetised and whilst the ...

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Luke Osborne, ECA Energy & Emerging Technologies Solutions Advisor, takes us through the changes in regulations regarding the sale of halogen lamps and what this will mean for the wider industry. The sale of most halogen lamps and lighting fixtures with fixed bulbs was banned in October of last year. The ban was initially set ...

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Scolmore Group looks at the ever-changing regulations regarding SPDs and ponders what the future might hold for domestic usage. BS 7671 is due for a second amendment this year and we currently understand SPDs are due for review. It’s proposed the current regulations are changed to simplify the process a designer completes to identify if ...

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The technical team at Megger answers the latest technical query from end users. YOU ASK: I’M LOOKING FOR A NEW CLAMP METER. IT MUST BE VERSATILE, AND I’D LIKE TO BE ABLE TO CONNECT IT TO MY SMARTPHONE SO THAT I CAN MONITOR AND DOWNLOAD THE RESULTS. WHAT DO YOU SUGGEST? MEGGER SAYS: There are ...

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Christopher Carvell MIET MIFSM PCQI, MD and Principal Consultant at Carvell Group, discusses the effectiveness of BS 5266-1 and if the standard is effective in meeting its objective. Although British Standards are not legislation, it is accepted that within the built environment they do form the basis to what we work to as a minimum. ...

The post Emergency lighting: is BS 5266-1 effective enough? | Carvell Group appeared first on Professional Electrician.

Julian Grant of Chauvin Arnoux provides more detail about harmonics and the problems they create, as well as their relationship with the Wiring Regs. Harmonics are currents in the supply system at whole-number multiples of the supply frequency. Individual harmonics such as the 2nd occur at 100 Hz (assuming a 50 Hz supply), the 3rd ...

The post Can you afford to ignore harmonics? | Chauvin Arnoux appeared first on Professional Electrician.

Gary Parker, ECA Technical Manager, reminds contractors of the basics they need to know when it comes to passive fire protection. Passive fire stopping is an essential requirement in the Wiring Regulations (BS 7671:2018). It can also be integral to meeting the requirements of key legislation such as the Health and Safety at Work Act, ...

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