03. Arc Fault Detection Devices Fact Sheet - BS 7671 Amendment 2

23 May 2022

AFDDs provide important additional protection against fire that other protection devices cannot provide. A major change in IET Wiring Regulations, BS 7671: 2018+A2:2022, is that the use of AFDDs has changed to being mandatory for some socket-outlet circuits in certain types of premises, and recommended in all other types of premises for the prescribed socket-outlet circuits.