Originally posted by tragically1969[\b]:
...in the UK the Neutral conductor doesn't change colour through a Fuse or MCB
Very good. As it happens, this machine is destined for the UK so this is very relevant. Thanks.
Originally posted by JesperMP:
As long as we are talking about a control voltage inside a control cabinet, then the neutral is not interrupted by the circuit breaker for the live phase.
Is this a requirement or is it more common practice, because:
Originally posted by JesperMP:
If there is a single phase supply going out of the control cabinet (very rare nowadays), then both phase and neutral are interrupted by the circuit breaker.
I actually have this situation. I have a main enclosure receiving the plant 3-phase supply. I also have a remote enclosure (approx 2 meters from the main enclosure) with devices that require a 230V single phase supply.
So I have both cases: 230V single phase inside the main enclosure and 230V single phase leaving the enclosure. Since I need to use double pole breakers on the conductors leaving the enclosure I would like to use them on the single phase supplies inside the enclosure as well as long as I am not violating any standards.
Keith