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argyle sean
Just been to a NIC seminar on the 17th Edition. Basically its RCDs for all. Concealled cables in walls without mechanical protection will have an RCD. The exemptions wont get you out of jail in a house. It also includes sub-mains, so that should be fun in a block of flats. Also if a cable is under 400mm insulation, it can be derated by half. Rewires are gonna change and nuisanse tripping will either make a mint or cost more.
Test everything. Stay safe.
Test everything. Stay safe.