RussellR
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Here's one I would be interested in your views on.
On a three phase board which is not fed directly from the external supply, I always spec a four pole main isolator, my rational being that it provides true isolation. To me if you leave the neutral in there is a potential for the board to be live even when isolated.
Leaving aside isolation procedures etc.
Whats your view guys ?
On a three phase board which is not fed directly from the external supply, I always spec a four pole main isolator, my rational being that it provides true isolation. To me if you leave the neutral in there is a potential for the board to be live even when isolated.
Leaving aside isolation procedures etc.
Whats your view guys ?