IET 18th Edition Amd 4 "Essential" Bundle (Orange Book & On-Site Guide)
 
Ensure you are ready for the April 15, 2026 deadline with this essential IET Wiring Regulations (BS 7671:2018+A4:2026) bundle. As the industry transitions from the "Brown Book" (Amd 2), this new "Orange Book" update is mandatory for all new low-voltage installations, additions, and alterations.
 
Why upgrade to Amendment 4? 
This is not just a minor update. Amendment 4 introduces critical safety regulations for the technologies defining the future of electrical work:
Stationary Secondary Batteries: A brand new chapter (Chapter 57) covering battery storage safety - essential for modern solar and storage installs.
Power over Ethernet (PoE): New specific requirements for delivering power alongside data.
Functional Earthing: Updated guidance on earthing for ICT and data centres.
Medical Locations: Major revisions to Section 710.
 
What's in this bundle?
IET Wiring Regulations Amendment 4 (The Orange Book): The mandatory new standard featuring the new Chapter 57 on Stationary Secondary Batteries and updated PoE requirements.
On-Site Guide (Amd 4): The essential "pocket" reference for quick domestic and commercial circuit information.
Docs-Store Vinyl Gloss Chapter Flag/ Tag labels. 
 
Don't get left behind. The previous version (Amd 2/3) will be withdrawn six months after publication. Secure your stock of the Orange Book now and stay fully compliant.