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Guidance Note 7 | Amendment 4 | Special Locations | 8th Edition | BS 7671:2018+A4:2026

SKU: 9781837240609
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Pre-order now. Official release date: 15 June 2026.
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Guidance Note 7 Amendment 4 8th Edition is updated to BS 7671:2018+A4:2026. A comprehensive guide to special locations, covering open-PEN devices, medical locations, RCD selection, multiple supply distribution boards and stationary secondary batteries.

Guidance Note 7 Amendment 4 – 8th Edition Special Locations

The guidance note 7 amendment 4 is the fully updated 8th Edition of the IET’s essential publication covering special locations under BS 7671:2018+A4:2026.

It provides comprehensive guidance on installations requiring additional protective measures to comply with the Wiring Regulations. This publication is ideal for consulting engineers, electricians, installers, inspectors and technicians working in environments where regulatory requirements differ from standard installations.

Key Amendment 4 Updates Include:

  • Open-PEN detection devices
  • Significantly updated guidance for Medical Locations
  • Bidirectional and unidirectional protective devices
  • Stationary Secondary Batteries
  • Rating of distribution boards with multiple sources
  • Selection of RCDs
  • Power over Ethernet (PoE)

Structured for practical application, the guidance note 7 amendment 4 supports safe design, installation and verification in special environments such as medical facilities, caravan parks, marinas, construction sites and other regulated locations.






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IET

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