BS 7671:2018+A3 (Amendment 3)
Status
Amendment 3 to BS 7671:2018 is in force. It was published in 2024 and is a short amendment covering bidirectional protective devices - the protective devices used where current can flow in either direction, as it does in installations with solar PV or battery storage feeding back into the consumer unit.
What Changed
Bidirectional protective devices
Amendment 3 addresses protective devices that must operate correctly with current flowing in either direction. This matters wherever generation or storage feeds power back towards the origin of the installation.
Smart Device Requirements
Updated requirements for smart devices and connected equipment integrated into electrical installations, addressing the growing prevalence of smart home technology.
Timeline
Source Links
This page reports what changed and when. It does not tell you what to do about it. Always consult the published BS 7671 standard and your scheme provider's guidance.
Last updated: 23 August 2026