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Dec 12, 2022 at 19:34 comment added Peter Green Most domestic installs would have required at least some RCD protection under reasonable interpretations of the 16th edition because at least some of the sockets could reasonablly be expected to supply equipment outside the equipotential zone. The possible exception would be some flats. TT installs have required RCD or ELCB protection on everything for a very long time, regardless of the nature of the loads.
Nov 28, 2019 at 15:26 comment added Martin Bonner supports Monica Are you sure about the final para? I had a house in the late 90s which had a whole-house RCD. I think it was a requirement when the previous owners rewired in the early 90s/late 80s (house was out in the sticks, so earthing may well have been TT)
Oct 29, 2019 at 11:01 history answered Niall CC BY-SA 4.0