Hi,
I am looking for a bit of advice on the Regs relating to BS 3036 fuses on a ring main, as I do not agree with the comments made on a PIR.
The defect states that the conductors are too small for the protective device due to the 0.725 factor.
The circuit is wired in 2.5mm2 singles in trunking/conduit. The regs state that the current carrying capacity of the ring conductors should not be less than 20 amps, which they are not. It appears that the tester has applied the 0.725 factor to the current carrying capacity which is less than 20 amps, but the regs (as far as I can tell) do not mention the application of 0.725 for this purpose.
Any comments on the situation?
I am looking for a bit of advice on the Regs relating to BS 3036 fuses on a ring main, as I do not agree with the comments made on a PIR.
The defect states that the conductors are too small for the protective device due to the 0.725 factor.
The circuit is wired in 2.5mm2 singles in trunking/conduit. The regs state that the current carrying capacity of the ring conductors should not be less than 20 amps, which they are not. It appears that the tester has applied the 0.725 factor to the current carrying capacity which is less than 20 amps, but the regs (as far as I can tell) do not mention the application of 0.725 for this purpose.
Any comments on the situation?