> In the US common practice is to bring 3 conductors to the house/building:
>
> 2 phase conductors (180 degrees apart), each a nominal 117V from ground.
>
> 1 ground/neutral conductor.
>
> As noted below for New Zealand, the protective ground and neutral are
split
> immediately at the entrance panel to the house or building, and from that
> point on are maintained separately, including, in theory, but often not
> practive any runs to outbuildings or subpanels.

One had better do it in practice in NZ as well or risk the wrath of
authroity. All commercially installed wiring will invariably have separate
earth and neutral runs throughout the property.



        Russell McMahon.

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