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Phase Isolation

Phase Isolation

Phase Isolation

(OP)
I understand that it shouldn't be possible to touch live parts from two phases at the same time ?.
Does anyone know where I can find a good explanaion of this ?, does it relate to fittings like the lights in one room being supplied from one phase and the power from another ?
Thanks

RE: Phase Isolation

No live parts or conductors should be touched by two phases. Two phases means two equal rms values of voltages, but their instantaneous values are different. Touching together means a short circuit or loading the two phases by a load. This explanation will be found in any basic electrical book.

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