Dspark,

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Will this GFCI detect a balanced leakage, e.g., a 1.0000 ampere leakage on T1 and 1.0000 ampere on T2?
That's a good question.
My first reaction would be to say no. But when thinking of it as a complete circuit (going back to source) I'm confused. You're right, a good Theory topic.

I just noticed the Labelling seems to be wrong on the diagram. the Neutral goes thru the contactor and becomes T1 ?? [Linked Image]

Do you see that the same way or is it my tired eyes (I didn't draw it) If you agree it's wrong I'll correct it somehow.

Bill


Bill