IET On-Site Guide for Electrical Wiring Installation

The On-Site Guide is an essential guide to BS 7671, the UK's regulatory framework for electrical installation work. It enables the competent electrician to deal with installations (up to 100 A, 3-phase) providing information in a convenient, easy-to-use format. This portable reference book cuts through complex regulations, translating technical requirements into practical guidance you can use on the job site.

It covers topics such as protective measures, earthing and bonding, cable selection and support, operation of residual current devices (RCDs), and more. Whether you're selecting protective devices, calculating cable sizes to prevent overheating, or designing systems with proper earthing arrangements, this guide provides the step-by-step guidance needed to work safely and compliantly.

The On-Site Guide incorporates the extensive changes in BS 7671:2018, and has been further updated to include two subsequent amendments to the IET Wiring Regulations as BS 7671:2018+A2:2022. This means you're working with current standards that reflect modern electrical requirements, including recent updates on emerging technologies and evolving safety practices.

The book's strength lies in its structure. Clear diagrams, practical examples, and technical tables let you quickly find answers without deciphering dense regulatory language. Apprentices use it to understand foundational principles. Qualified electricians rely on it to verify compliance on commercial projects. Electrical engineers consult it when designing systems across domestic, commercial, and industrial settings.

Designed for real-world conditions, this guide sits comfortably on job sites, in vans, and in training environments. It's the reference that keeps you compliant without slowing your work down.