The IET On-Site Guide is designed to be taken on-site for easy referencing and provides simple guidance on the application of BS 7671. This book is for anyone wishing to take guidance to BS 7671 on site for quick referencing. The book is also relevant for students studying wiring-related courses.

All expected updates to the new 18th edition wiring regulations will be included in the On-Site Guide

• An essential guide to BS 7671


• Incorporates the extensive changes in BS 7671:2018, making this a vital guide for keeping up to date


• Enables the competent electrician to deal with installations (up to 100 A, 3 phase) providing essential information in a convenient, easy to use format

The 18th Edition Wiring Regulations (BS7671:2018) were published in July 2018 and are now in effect. All new installations must comply with BS 7671:2018.