Urgent 3rd Amendment to BS 7671 Wiring Regulations

The Institution of Engineering and Technology (IET) has issued an urgent 3rd amendment to BS 7671, which will be open for public comment from May 8th onwards.

The key change introduced by the 3rd Amendment is the requirement for bi-directional protective devices on all generating sets including solar PV, battery storage, and electric vehicles capable of supplying power back to the charger (vehicle-to-grid).

This new requirement aims to ensure safe and reliable electrical installations for the growing number of renewable energy sources and bi-directional power flow scenarios.

After a one-month consultation period, this amendment will become part of the BS 7671 regulations, effective immediately.

Have your say

"We’re seeing more and more installations using renewable energy sources with bi-directional power flow. We’re here to help keep you informed about changes to the wiring regulations so that you can always work safely with these systems”.

Darren StaniforthDarren Staniforth, Head of Technical Solutions

Have your say

As part of our partnership with the IET, we are committed to share this information with you and encourage you to get involved in the public consultation.

From 8^th May 2024, you can submit comments through BSI’s Standards Development portal. The deadline for responses is 5 June 2024 at 17:00.

To submit your comments you must register on the BSI Standards Development portal. The final amendment is due to be published in summer 2024, on the IET and BSI websites.

Your input is invaluable in shaping the future of electrical standards in the UK.

We will bring you further updates and guidelines on implementing the 3^rd Amendment to BS 7671. We encourage you to stay informed and prepare for this important change in wiring regulations.