IET Guidance Note 1: Selection and Erection 10th Edition BS 7671:2018+A4:2026
IET Guidance Note 1: Selection and Erection is an essential resource for electricians, designers and inspectors working on electrical installations. It provides clear and practical guidance on how to apply the requirements of BS 7671 in real-world situations.
This 10th Edition of Guidance Note 1: Selection and Erection is fully updated to BS 7671:2018+A4:2026, including Amendment 4. It explains how to select and install electrical equipment safely while meeting current UK regulations. The guide supports consistent decision-making across a wide range of installation types.
Professionals use Guidance Note 1: Selection and Erection during installation, inspection and testing work. The content is structured in a clear and accessible format, making it easy to find key information when working on site or planning installations.
Selection and Erection Guidance for Modern Installations
This edition of Guidance Note 1: Selection and Erection includes important updates for modern electrical systems. It covers required notices and identification labels, along with guidance on bidirectional and unidirectional devices. It also explains the use of insulation monitoring devices and the co-ordination of RCD types connected in series.
The guide includes updated advice on protected escape routes and conductor classes. It also provides clear guidance for cables installed in walls or partitions. Additional sections cover functional earthing and bonding for ICT systems, as well as stationary secondary batteries and Power over Ethernet installations.
Why Choose Guidance Note 1 Selection and Erection
Guidance Note 1: Selection and Erection helps you meet current standards while improving safety and efficiency. It includes practical examples, such as rating distribution boards with multiple sources. This makes it a valuable tool for both experienced electricians and those developing their knowledge.
Key Features:
- Updated Guidance Note 1: Selection and Erection to BS 7671:2018+A4:2026
- Covers selection and erection requirements for electrical installations
- Includes guidance on RCDs, IMDs and modern installation methods
- Covers ICT systems, batteries and Power over Ethernet
- Includes notices, labels and practical installation examples
- Suitable for electricians, designers and inspectors
| Attribute | Details |
|---|---|
| Publication Year | 2026 (29/06/26) |
| Pages | 446 |
| ISBN-13 | 978-1-83724-042-5 |
| Format | PBK |
| Author(s)/Editor(s) | IET |
| SKU | DOC/PIETGN1184 |
| MPN | PIETGN1184 |




