Working on your own? Need some technical advice? Don’t know where to turn? The technical team at Megger answers the latest technical query from end users. YOU ASK: WHEN I’M TESTING ELECTRICAL INSTALLATIONS, I HATE FILLING IN TEST CERTIFICATES BY HAND. IT TAKES AGES AND IT’S EASY TO MAKE MISTAKES. IS THERE A SIMPLER AND ...

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With the pressures of modern construction projects, many contractors need electrical installation solutions that combine speed, safety and value. Spelsberg’s recently launched range of TKS enclosures meets these requirements, featuring pre-assembled components and pluggable systems tailored to each customer. Consequently, users can expect simple, efficient and fault-free installations. What sets the TKS range apart from ...

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It can be difficult for an electrical contractor to determine whether a single electrode will be sufficient to be able to gain an adequate value of resistance prior to its installation and test. Here, Jake Green Head of Technical Engagement, Scolmore Group (owners of the Unicrimp brand) looks at how the earth electrode resistance might ...

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Raphael Magnus, Managing Director at Safe-Electric, looks at the legal and ethical reasons that dictate the value of a properly designed electrical system. In my experience, too many electricians don’t bother designing, preferring instead to use the old ‘guestimate’ method while completely ignoring that statutory document that so few take any notice of – HSR-25 ...

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The experts at NAPIT discuss site preparation and resistance to both contaminants and moisture. BS 7671 and Building Regulations The sealing of wiring systems is detailed in Regulation 527.2.1, which specifies the requirements for wiring systems that pass through building construction, such as floors, walls, roofs, ceilings, partitions and cavity barriers. Although this regulation is ...

The post The Sealing of Wiring Systems: Preventing Interstitial Condensation | NAPIT appeared first on Professional Electrician.

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

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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. ...

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Why are RCD sockets still popular? Neil Chapman, Sales Director at Timeguard, offers his thoughts. The 18th Edition gives us detailed information on the different types of RCDs These regulations apply to the design and verification of electrical installations as well as any additional and/or alteration of existing installations of sockets rated to a maximum ...

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The experts at Scolmore provide guidance for the use of electrical accessories in accordance with Approved Document M – access to and use of buildings. Approved documents (AD) provide practical guidance about how to comply with the requirements of The Building Regulations for England and Wales (where relevant). Under schedule 1, Part M of the ...

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Schneider Electric has developed a modular circuit protection range tailored for the UK market – Acti9 Active. Schneider Electric’s innovative solution has revolutionised the future of electrical installations across higher risk residential buildings, HMO’s, Office Buildings and care homes, catering to the evolving sustainable needs of electricians, facilities managers and design firms. Compliant with the ...

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