A number of protective devices are now available which perform more than one function, such as Residual Current operated Circuit-Breakers with integral Overcurrent protection (RCBO), and combination RCBO and Arc Fault Detection Devices (AFDD). The model ‘Schedule of circuit details’ in Appendix 6 of BS 7671 asks for a number of key functional characteristics of ...

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Need help with cracking those EICR codes? The technical team at NAPIT, with the help of the 18th Edition Codebreakers publication, answer your latest coding queries. Click on the photos for a closer look! JEFFERY CASE: THOSE GOOD OLD PLUMBERS…! At times, it can seem to be the case that the electricians are seen as ...

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Steve Humphreys, Technical Commercial Manager at NAPIT, provides a guide on how to fix PV arrays to on-roof solar photovoltaics systems. In this article, we will look at a simplified wind uplift calculation to determine how any fixings would be required for the array mounting system. One of the most important aspects of installing a ...

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Need help with cracking those EICR codes? The technical team at NAPIT, with the help of the 18th Edition Codebreakers publication, answer your latest coding queries. Click on the photos for a closer look! STEVEN DOBSON: THIS WAS FOUND ON A RECENT EICR – I’D IMAGINE THAT ISOLATING WILL BE A PROBLEM! ONE OF THE ...

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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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BS 7671 permits an unfused spur (or cable branch) from a 30 A or 32 A ring final circuit supplying accessories conforming to the relevant part(s) of the BS 1363 series to be wired with thermoplastic (PVC) or thermosetting insulated copper line and neutral conductors of cross-sectional area as small as 2.5 mm² (433.1.204) where ...

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Need help with cracking those EICR codes? The technical team at NAPIT, with the help of the 18th Edition Codebreakers publication, answer your latest coding queries. Click on the photos for a closer look! PAULO ALVES: I FOUND THIS GEM ON A RECENT EICR. 2 X SHOWERS ON ONE MCB ALERTED MY FEARS ORIGINALLY, AND ...

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Frank Bertie, Managing Director at NAPIT, discusses bonding issues and extraneous-conductive-parts in electrical installations. Bonding requirements of BS 7671 Whenever we have discussions, whether received on the NAPIT Technical Helpline, at NAPIT EXPO events, or on the NAPIT webinars, they normally involve main and supplementary equipotential bonding in all types of premises. This article will ...

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This article from the experts at NICEIC looks at electrical installations in medical locations, and will consider the scope of Section 710 of BS 7671 including some of the design requirements. Consideration will also be given to the use of system Grouping and how the classification of a safety service supply given in Section 560 ...

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Need help with cracking those EICR codes? The technical team at NAPIT, with the help of the 18th Edition Codebreakers publication, answer your latest coding queries. Click on the photos for a closer look! DARREN OVEREND: WE WERE CALLED OUT TO AN OUTDOOR LIGHTING JOINT BOX WHICH HAD BEEN REPORTED AS ‘GETTING HOT’. THIS PICTURE ...

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