The IET Guidance Note 6 provides practical guidance on overcurrent
protection in electrical installations. It is intended for specifiers, designers, installers, and inspectors responsible
for selecting and verifying protective systems.
Fully updated to BS 7671 (18th Edition Amendment 4:2026), this edition covers bidirectional and unidirectional devices,
selection of protective devices, and the application of backup protection.
It serves as a focused reference for ensuring overcurrent safety measures are correctly applied in line with current
regulatory requirements.
Expected by: 25 May 2026
£42.50
£42.50 inc vat
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