> [Original Message][SNIPPET]
> From: Jim Brown <email@example.com>
> I am raising this issue to alert the EMC folk on this list to the
> issue, because I am seeing systems where the "willy-nilly" use of
> bypass capacitors on multiple circuits in large systems (like large
> lighting or motor control systems) is shoving huge currents onto the
> green wire and causing serious interference to audio systems. Last
> year, I measured 60A on the green wire in the distro panel of a
> theatrical lighting system in a "megachurch" in Maryland. When we
> asked the Electrical Contractor to find and fix the problem, he told
> the client the condition was "normal." Huh?
The max leakage for ITE is 3.5 ma; to get 60 amps there would have to be
over 17 thousand of 'em. He had a crossed neutral/green, all right. And
of course green wire is just a way to make sure breakers open on shorts to
chassis. It isn't "ground" for us.
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