On-Site Guide (BS 7671:2018+A4:2026)

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