About the IET Wiring Regulations.The IET co-publishes BS 7671 with the British Standards Institution (BSI) and is the authority on electrical installation. We run JPEL/64, (the national Wiring Regulations committee), with representatives from a wide range of industry organisations. Permission to reproduce extracts from BS 7671:2008 Incorporating Amendment No 1: 2011 is granted the Institute of Engineering and Technology (IET) and the British Standards Institution (BSI). No other use of this material is permitted. BS 7671:2008 Incorporating Amendment No 1: 2011