----- Original Message -----
From: "Sean Alcorn - Avion Sydney" <sdalcorn@AVION.COM.AU>

> Yeah, That's pretty much how we have always done it. Except we have no
> need for the transformers - since our 3 phases are 415V each, we tap in
> at 240VAC

I am sure you use higher voltages than 415 for neighborhood distribution,
don't you?!? Otherwise you'd use an awful lot of Cu or Al.

> Residual Current Circuit Breakers or Ground Fault Breakers that trip at
> 30mA are pretty much standard now.

I believe GFIs in the US are supposed to trip at 7 or more ma.

Bob Ammerman
RAm Systems

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