IET Guidance Note 7: Special Locations, 8th Edition (2026)
The IET Guidance Note 7: Special Locations – 18th Edition Amendment 4 is an essential reference guide for UK electricians, electrical designers, inspectors and installation engineers working in environments requiring additional protection measures under BS 7671.
Updated to BS 7671:2018+A4:2026, this latest edition provides practical guidance for electrical installations in special locations including medical environments, installations with stationary secondary batteries and systems using Power over Ethernet technologies. It also covers key updates on open-PEN detection devices, RCD selection and distribution boards with multiple power sources.
Designed for electrical professionals carrying out installation, inspection and testing work, this IET guidance book helps ensure safe, compliant and efficient electrical system design across commercial, industrial and specialist applications.
Why is Guidance Note 7 important for special location installations?
This guide helps electricians and electrical contractors apply the correct safety measures in locations where standard installation methods may not be sufficient. It supports compliance with the latest IET Wiring Regulations while improving confidence during inspection, design and verification work.
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1 x IET Guidance Note 7: Special Locations – 18th Edition Amendment 4, 8th Edition
Official IET publication
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