our elec has made a fuss over a ring main connected with one of the white connectors. Is this against the regs? I think the previous owner did this because the main was too short to reach the CU.
that depends, using terminal block is not in itself a problem. Using terminal block that is too small is a problem. Using terminal block without a suitable enclosure is a problem. Using terminal block where is can't be accessed for inspection is a problem.
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