If there nothing wrong with the circuit feeding the GFCI, 99.9% of the time the GFCI dedected leakage. The light should have not tripped the GFCI. Exactly where is anyone's guess. Possibly in the transformer would be my first guess. The only way to know is to disassemble it and meg the windings
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Last edited by sparkyinak; 03/01/08 03:30 AM.
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