IET Guidance Note 3: Inspection and Testing (BS 7671:2018+A4:2026)
- Practical inspection and testing guidance aligned with BS 7671:2018+A4:2026
- Supports correct testing, interpretation and recording of results
- Updated for modern installations including batteries and prosumers
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Use reward points to get money off future purchases.
Please note: Customers must be signed into their account to be elegible. Find out more about reward points here.
Found this product cheaper & in stock somewhere else? Give us the details and we'll endeavour to match the price.
To price match, contact us online or call 0113 248 9966.
We offer FREE standard delivery on all orders over £249, with a range of next-day options also available on many items.
Find out more on our delivery information page.
We want our customers to be fully satisfied with the goods they purchase from us, offering returns for up to 60 days.
Find out more about our refunds policy here.
We're always happy to offer help, information & advice to find the right instrument for you, so please get in touch.
To speak to our sales team, call us on 0113 248 9966, use our Live Chat service or contact us online.
IET Guidance Note 3: Inspection and Testing (BS 7671:2018+A4:2026)
Iet Guidance Note 3: Inspection and Testing (BS 7671:2018+14:2026) is a core reference for anyone responsible for the inspection, testing and verification of electrical installation. It provides clear, practical guidance to support safe, compliant work, and it is also widely used by those studying for inspection and testing qualifications.
Fully updated to align with BS 7671:2018+A4:2026, this edition reflects current requirements and good practice for modern installations. It helps users apply consistent methods, interpret results correctly, and record outcomes in a way that supports compliance and ongoing maintenance.
Updates include guidance on identification of conductors, stationary secondary batteries, prosumers’ electrical installations, recommended initial frequencies of inspection, and maximum permissible measured earth fault loop impedance (EFLI) – making it a useful day-to-day book for both working professionals and learners.
Key Features
- Essential guidance for inspection and testing of electrical installations
- Useful for practising professionals and those studying inspection and testing qualifications
- Updated to align with BS 7671:2018+A4:2026
- Guidance on identification of conductors
- Includes coverage of stationary secondary batteries
- Includes guidance for prosumers’ electrical installations
- Recommended initial frequencies of inspection for electrical installations
- Maximum permissible measured earth fault loop impedance (EFLI) guidance
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