Which regulations(s) require the steel wire armouring of a S.W.A. cable to be earthed if it is NOT used as a circuit protective conductor?
Case 1. Cable buried underground.
Case 2. Cable NOT buried underground.
Z.
Case 1: covered by a specific Reg 522.8.10 as we've seen, so always required.
Case 2: if the cable carries anything other than SELV or PELV, then always required because it's an extraneous-conductive-part, and double insulation is not "assumed to exist". So take your pick but 411.3.1.1 pretty much, but the conditions for "double insulation" don't exist if you thought you had that.
Which regulations(s) require the steel wire armouring of a S.W.A. cable to be earthed if it is NOT used as a circuit protective conductor?
Case 1. Cable buried underground.
Case 2. Cable NOT buried underground.
Z.
Case 1: covered by a specific Reg 522.8.10 as we've seen, so always required.
Case 2: if the cable carries anything other than SELV or PELV, then always required because it's an extraneous-conductive-part, and double insulation is not "assumed to exist". So take your pick but 411.3.1.1 pretty much, but the conditions for "double insulation" don't exist if you thought you had that.
