I just installed a GFCI outlet in my daughter's room, and that circuit
is shared with a few other outlets and two closet lights. When I turn
on one of the closet lights, the GFCI trips (pressing reset doesn't do
anything) and all connected circuits shut off. This continues until I
turn off the closet light. Once the closet light is off, I can press
reset on the GFCI and everything's back to normal. Turning on the
other closet light doesn't cause this problem (the light just comes
Does this mean that there's a wiring fault in that closet light? Or
would the fault be in the light switch? What should I look for when I
open up the switch or light fixture?
I remember the time about 25 years ago, my little girl was playing quietly
in her room with her dollies and jewlery, just having a good time till she
hung a necklace on the plug for her light on the night stand.
Unfortunately, the plug was not in all the way and the necklace slipped
behind and touched both the hot and neutral. Pow!
Fortunately, the only damage was a slight flash burn on her hand and a
destroyed necklace. I would rather have had a GFCI.
Hmm. This may raise that; "Use only 3 pin plugs; not those two pin
variety, even if polarized". And put the ground pin up? But agree a
GFCI (which works on unbalance of the currents in the neutral and live
conductors) would not have done much in 'The case of the necklace'!
Tripping GFCI; sounds like something is miswired!
I'd start by checking the overhead bulb socket or fixture in the
Disconnect the hot and neutral leads from it, make sure the stripped
ends aren't touching anything and see if the GFCI stays "on" when you
flip the switch for that closet light on.
If it does, you've narrowed it down to the fixture or socket. It may
have an internal leakage fault, try a different socket or fixture.
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