IET Wiring Regulations BS 7671:2018+A4:2026
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The IET Wiring Regulations Eighteenth Edition, updated to BS 7671:2018+A4:2026, is the definitive national standard governing electrical installation design, construction, inspection, and testing in the UK. It consolidates the latest amendments into a single authoritative reference that reflects current safety requirements and harmonised European standards. For anyone working in the electrical industry, it is an essential and non-negotiable reference document.
Key Features & Specs
| Edition | Eighteenth Edition with Amendment 4 (A4:2026), the most current version of BS 7671 |
|---|---|
| Publisher | Institution of Engineering and Technology (IET), the UK's leading engineering professional body |
| Coverage | Comprehensive regulations covering design, erection, inspection, testing, and verification of low voltage electrical installations |
| Compatibility | Aligned with CENELEC harmonised European standards and references current BS EN product standards |
| Format | Available in hardcopy and digital editions, including online subscription access via the IET platform |
| Audience | Targeted at electricians, electrical engineers, designers, inspectors, and building control professionals |
| Legal Standing | Widely recognised by UK building regulations and used as the benchmark standard for electrical installation compliance |
Best for: This publication is ideal for qualified electricians, electrical contractors, design engineers, and inspection and testing professionals who need an authoritative, up-to-date reference to ensure their installations meet current UK safety and compliance requirements.