On-Site Guide (Bs 7671:2018+a4:2026)

By The Institution of Engineering and Technology

The On-Site Guide is an essential guide to BS 7671. It incorporates the extensive changes to BS 7671, making this a vital guide for keeping up to date. It enables the competent installer to deal with installations (up to 100 A, 3-phase) providing essential information in a convenient, easy-to-use format. This publication has been further updated to include all four amendments to the 18th Edition and aligns with BS 7671:2018+A4:2026 The IET Wiring Regulations.

BS 7671:2018+A4:2026 incorporates changes from all four amendments to BS 7671:2018 and the On-Site Guide includes new topics, such as bidirectional and unidirectional protective devices; Stationary Secondary Batteries; amended rational for maximum Zs values for protective devices; guidance on selection of RCDs and guidance on prospective fault current for protective devices.

• Format: Spiral-bound
• Language: English
• ISBN: 1837240396
• ISBN13: 9781837240395
• Release Date: June 2026
• Publisher: Institution of Engineering & Technology
• Length: 256 Pages