Guidance Note 3: Inspection & Testing
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Guidance Note 3 is an authoritative reference guide published by the IET covering the inspection and testing of electrical installations in accordance with BS 7671 wiring regulations. It provides clear, practical guidance on the procedures, instruments, and documentation required to verify that installations are safe and compliant. The fourth edition is widely regarded as an essential companion for electricians and engineers working within the UK regulatory framework.
Key Features & Specs
| Publisher | Institution of Engineering and Technology (IET) |
|---|---|
| Edition | 4th edition, aligned with the 18th Edition BS 7671 wiring regulations |
| Coverage | Full guidance on initial verification, periodic inspection, testing procedures, and certification |
| Format | Available in print and digital editions for flexible reference on site or in the office |
| Audience Level | Suited to qualified electricians, electrical engineers, and inspection and testing professionals |
| Complementary Use | Designed to be used alongside BS 7671 and other IET Guidance Notes for complete regulatory coverage |
| Content Depth | Includes worked examples, reference tables, and sample certification forms to support practical application |
Best for: This guide is ideal for qualified electricians, electrical contractors, and engineers who need a reliable, regulation-aligned reference for carrying out inspection and testing of both new and existing electrical installations in the UK.