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IET On-Site Guide, 9th Edition
- Up to 100 A, 3-phase systems
- Updated to BS 7671 (18th Edition Amendment A4:2026)
SKU
PWGO184B
MPN
PWGO184B
The IET On-Site Guide, 9th Edition, is a practical reference guide based on BS 7671 Wiring Regulations (18th Edition, including all amendments up to A4:2026). It is intended for competent electrical installers working on low-voltage installations up to 100 A, 3-phase systems.
It includes updated technical guidance reflecting the latest amendments, including:
- Bidirectional and unidirectional protective devices
- Stationary secondary batteries
- Revised maximum Zs values for protective devices
- Updated RCD selection guidance
- Prospective fault current considerations for protection devices
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SKU
PWGO184B
Manufacturer Part Code
PWGO184B
IET On-Site Guide, 9th Edition
£40.00
£40.00 inc vat
£40.00
£40.00 inc vat