On Fri,9/12/2014 4:39 PM, Bill Turner wrote:
I'm not an electrician but I'm pretty sure that is not according to
code. You should have four wires, not three, going from the house to
the shack: Two hots, a neutral and ground. Having no ground in the
shack is asking for trouble. And I do NOT mean a ground rod in the
shack - I mean a green ground wire from the service entrance to the
shack.
The system I described is legal per the latest NEC I have from my
working days designing sound systems (about 2003, I think). I looked it
up before I did it.
There is nothing "magic" (or even desirable) about carrying ground from
one building to another, or even from the utility. The utility brings us
center-tapped 240. The center tap goes to earth along the power system
at multiple points, but it's rarely much of a ground. AND there's a lot
of inductance between that ground and ours.
73, Jim K9YC
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