BS 7671:2018+A4:2026 IET Wiring Regulations Latest Amendment 4 Edition
BS 7671:2018+A4:2026 IET Wiring Regulations is the recognised UK standard for electrical installations. As a result, electricians, contractors, inspectors and engineers rely on BS 7671:2018+A4:2026 to guide the design, installation, testing and maintenance of electrical systems across domestic, commercial and industrial environments.
This latest Amendment 4:2026 introduces key updates to the Eighteenth Edition. In addition, BS 7671:2018+A4:2026 brings together all previous amendments into one consolidated and easy-to-use publication. Therefore, professionals can work from a single, up to date reference when ensuring compliance with current safety requirements.
BS 7671:2018+A4:2026 also reflects modern electrical demands. For example, it addresses the growing use of energy storage systems, digital infrastructure and specialised installations. As a result, it supports safe working practices and helps ensure installations meet current UK regulations.
BS 7671:2018+A4:2026 Updates and Requirements
This edition of BS 7671:2018+A4:2026 includes new and revised sections to address evolving technologies. For instance, it introduces guidance on stationary secondary batteries used for electrical energy storage. Furthermore, it includes requirements for functional earthing and equipotential bonding in ICT systems.
A new section on Power over Ethernet installations supports modern network infrastructure. In addition, BS 7671:2018+A4:2026 features a major revision of Section 710 covering medical locations. Moreover, it includes a schedule of test results for recording resistance of supplementary protective bonding conductors.
Why Choose BS 7671:2018+A4:2026
BS 7671:2018+A4:2026 is essential for anyone working with electrical installations in the UK. Therefore, it helps ensure compliance, improves safety and supports consistent standards across all types of projects. Whether you are installing, inspecting or maintaining systems, BS 7671:2018+A4:2026 remains the key reference for professional work.
Key Features:
- Covers the UK standard BS 7671:2018+A4:2026 IET Wiring Regulations
- Includes updates from Amendment 4:2026
- Guidance on energy storage and stationary secondary batteries
- Covers ICT earthing and equipotential bonding requirements
- Includes Power over Ethernet installation guidance
- Updated Section 710 for medical locations
- Includes testing schedules for bonding conductor resistance
- Fully consolidated edition with all amendments
| Attribute | Details |
|---|---|
| Edition | 18th Amendment 4 |
| Publication Year | 2026 |
| Format | Paperback |
| Pages | 630 |
| ISBN-13 | 978-1-83953-972-5 |
| Author(s)/Editor(s) | IET |
| SKU | DOC/PIETREG184 |
| MPN | PIETREG184 |
