Re: Isolator Transformer Query
An isolating transformer removes you from the infinite busbar incoming mains.
The RCD will detect and trip a leakage current before you even notice.
It is like having a generator outside, it is much better to know what voltage is around, like an isolating transformer, and the RCD is a useful safety device, either 230V or 400V 3 phase.
The isolating transformer with neutral earthed means there is only one wire that has electrocution possibilities, and the RCD cancels that.
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