Emergency 3rd Amendment to BS 7671 Wiring Regulations

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

Updates to 18th Edition – BS7671- IET Wiring Regulations (theiet.org)

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.