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18th Edition: Amendment 1 released

First Amendment to BS7671:2018

03 February 2020

Amendment 1 of the BS 7671:2018 wiring regulations has been released to allow advances in EV charging technologies which weren’t available at the time of the original publication.

The main change has been the addition of regulation 722.411.4.1 (iv).

This gives an option specifically for protection against electric shock in a single-phase installation, by using a device which electrically disconnects the vehicle from the live conductors of the supply and from the protective earth within 5 seconds.

Luke Osborne, ECA Energy & Emerging Technologies Solutions Advisor, commented:

"ECA welcomes the release of BS 7671:2018 Amendment 1 as it takes on board advances in technologies not previously available. It will offer electrical contractors a method of providing safe, compliant Electrical Vehicle Charge Point installations for buildings with a single phase electricity supply, without having to undertake potentially dangerous groundworks or an using expensive and heavy isolation transformers."

The Amendment also includes the addition of 722.411.4.1 (v), which gives the opportunity for industry to develop alternative devices to those listed in 722.411.4.1 (iii) and 722.411.4.1 (iv), which will provide protection against electric shock which does not result in a lesser degree of safety than those of (iii) and (iv). This will remove the necessity for updating the regulations in the advent of new technologies coming through.

The full Amendment can be viewed for free, or downloaded for £5, at electrical.theiet.org/bs-7671/updates/

For more information about additional changes and a more detailed guidance note, visit eca.co.uk/Project18. 

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