IET On-Site Guide BS 7671:2018+A4:2026
The IET On-Site Guide is a trusted and practical companion to the BS 7671 Wiring Regulations, designed to support electricians working on electrical installations across a wide range of environments. This updated edition aligns with BS 7671:2018 and incorporates Amendment 4:2026, ensuring you have the most up to date guidance available for safe and compliant work.
Created for competent electricians, the On-Site Guide focuses on installations up to 100 A, three-phase. It provides essential information in a clear and accessible format, making it ideal for use directly on site. The layout is designed for quick reference, allowing you to find key data, tables and guidance without delay, helping to improve efficiency and accuracy during installation, inspection and maintenance tasks.
This latest edition includes all relevant updates introduced in Amendment 4, reflecting changes in modern electrical practices and technologies. It supports compliance with current UK standards while promoting safe working methods and consistent decision-making.
Whether you are working in domestic, commercial or light industrial settings, the On-Site Guide remains an indispensable resource. It bridges the gap between detailed regulations and everyday practical application, giving you confidence that your work meets the latest requirements.
Key Features:
- Fully updated to BS 7671:2018+A4:2026 including Amendment 4
- Suitable for installations up to 100 A, three-phase
- Easy to navigate format for fast on-site reference
- Includes essential tables, guidance and practical information
- Supports safe working practices and regulatory compliance
- Ideal companion to the full IET Wiring Regulations