On Tue, 13 Sep 2011 20:27:57 -0700 (PDT), Bruce Bergman
wrote:


*Snip*
Or they connect (bond) the ground to Neutral out in the Genny trailer, and just as they're getting everything in the building started back up the ground loop trips off the GFCI Building Main Breaker because it sees circulating current on the Neutral and Ground.

Hint: You can't do that. Have to hook the Genny up as floating neutral and have the bond where the building GFCI Main expects to see it.


*Snip*
-- Bruce --

Yup, went through this at work. The operations deprtment went out &
bought some gensets built to provide power at construction sites but
we use them to supply emergency power to comuunications huts. Try to
convince them to open the thing up & disconnect the little green wire
going to the neutral- Ain't Gonna Happen

Last I heartd they wanted us to instal 3 pole transfer switches so the
mains neutral/ground interconnect in the sevice entrance would be
disconnected from the system when running on the genny :/ Yeah, sure
it can be done but - WHY?

H.