IET 18th Edition Amendment 4 Core Book Bundle (BS 7671:2018+A4:2026)

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Stay compliant, confident and ready to work to Amendment 4 with the three core references most contractors reach for every day. This bundle brings together the full BS 7671 requirements, practical on-site guidance, and IET’s go-to inspection and testing Guidance Note helping you interpret the new requirements and apply them correctly to real jobs. 

• Ideal for contractors who want the essential Amendment 4 toolkit in one purchase. 
• Supports design, installation, verification, inspection, and testing work across domestic, commercial, and industrial installations. 
• Helps you understand key Amendment 4 updates, including stationary secondary batteries, ICT functional earthing and bonding, Power over Ethernet. and revised medical locations guidance. 

Contains the following publications, fully updated for Amendment 4: 

• IET BS 7671 Wiring Regulations 
• IET On-Site Guide 
• IET Guidance Note 3