The IET Wiring Regulations, On-Site Guide & Guidance Note 3 Bundle combines three key publications covering the requirements, guidance and practical information needed for electrical installations, inspection and testing in accordance with BS 7671:2018+A4:2026.
The bundle includes the Requirements for Electrical Installations (BS 7671:2018+A4:2026), the On-Site Guide and Guidance Note 3: Inspection & Testing, 10th Edition.
BS 7671:2018+A4:2026 is the national standard for electrical installations in domestic, commercial and industrial settings and incorporates all previous amendments. Amendment 4:2026 includes updates covering stationary secondary batteries, functional earthing and equipotential bonding for ICT equipment and systems, Power over Ethernet (PoE) and revisions to medical locations.
The On-Site Guide provides practical guidance for electrical installations up to 100A, three-phase and has been updated to incorporate amendments to BS 7671.
Guidance Note 3: Inspection & Testing guides the inspection and testing of electrical installations and has been updated to BS 7671:2018+A4:2026.
Key Features
Includes BS 7671:2018+A4:2026 Requirements for Electrical Installations
Includes the On-Site Guide to BS 7671
Includes Guidance Note 3: Inspection & Testing, 10th Edition
Updated to BS 7671:2018+A4:2026
Incorporates all previous amendments to BS 7671
Covers electrical installation requirements for domestic, commercial and industrial settings
On-Site Guide includes practical guidance for installations up to 100A, three-phase
Guidance Note 3 provides guidance on inspection and testing of electrical installations
Includes updates covering stationary secondary batteries, ICT earthing and bonding requirements, and Power over Ethernet (PoE)
What's Included?
Requirements for Electrical Installations, IET Wiring Regulations, Eighteenth Edition, BS 7671:2018+A4:2026
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