Hello, I am dealing with an office refurb and existing installation consisting of about 8 rotary isolators on a ring circuit wired with 2.5mm2 singles and fed by BS88 32Amp fuse. From as builts it appears isolators supposed to serve power poles which appears were never installed, but I would like to reuse the existing circuit to feed new HRU - about 3Amp 1ph supply. Do I need to change the circuit to radial/replace isolators with fused spurs or can I reuse one of the existing isolator? I feel I can't use the isolators but doubt arose in me when my boss said that he thinks using isolators is compliant with BS. Please let me know, thank you :)
okay that makes more sense now, but coming back to an RCD - that means I need to allow for an RCD protection then as I am using a ring circuit and the rating of the circuit is up to 32 Amp? As stated above it's not ideal in my situation as it will be a mechanical fan so I would rather avoid using RCD so it doesn't trip unwanted.
okay that makes more sense now, but coming back to an RCD - that means I need to allow for an RCD protection then as I am using a ring circuit and the rating of the circuit is up to 32 Amp? As stated above it's not ideal in my situation as it will be a mechanical fan so I would rather avoid using RCD so it doesn't trip unwanted.
