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Old 05-16-2010, 10:31 PM   #1
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*PICS* Light fixture trips breaker/has short *PICS*


I had my bedroom and walk-in closet light on for a few minutes when suddenly all the lights went out in the room. I went to the breaker and saw it had tripped. After I reset it, I started turning on lights again and figured out it was my walk-in closet light that was the culprit.

I took down the fixture and found black wires and a burning smell. Now I'm not sure what to do. Here is my situation...

Shot of the ceiling. 1 white, 1 black, 1 ground. You can see the white wire has a burn mark on it. The black wire has a spot on it at roughly the same spot.
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*PICS* Light fixture trips breaker/has short *PICS*-light-fixture-1.jpg  

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Old 05-16-2010, 10:32 PM   #2
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*PICS* Light fixture trips breaker/has short *PICS*


Here is a shot of the light fixture. It's roughly 2.5 years old.
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*PICS* Light fixture trips breaker/has short *PICS*-light-fixture-2.jpg  

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Old 05-16-2010, 10:33 PM   #3
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*PICS* Light fixture trips breaker/has short *PICS*


Here is a shot showing the burn marks on the white wires of the light fixture.
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Old 05-16-2010, 10:34 PM   #4
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*PICS* Light fixture trips breaker/has short *PICS*


You can see the burn marks from the ground wire...
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*PICS* Light fixture trips breaker/has short *PICS*-light-fixture-4.jpg  
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Old 05-16-2010, 10:35 PM   #5
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*PICS* Light fixture trips breaker/has short *PICS*


Here is the back of the light fixture showing all the wires...
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Old 05-16-2010, 10:41 PM   #6
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*PICS* Light fixture trips breaker/has short *PICS*


I tested the fixture with a volt ohm meter. I put one end on both black wires and then the other end in the light bulb socket. It completed the connection correctly. When I did the same to the white wires, I got an open connection. Is that correct since the black is hot and white is neutral?

I plan to cut out the sections of burnt wire. Is that all that needs to be done to the wires before reinstalling the fixture?

What do you think caused this? One of the black and white wires touching? The wires were tucked up into the box when I took the fixture down. I couldn't tell if anything was touching. I didn't notice any exposed wires or loose wire nuts though.

Should I reuse this fixture or buy a new one?
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Old 05-16-2010, 11:11 PM   #7
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*PICS* Light fixture trips breaker/has short *PICS*


What may have happened is that you may have pinched the insulation on the wires against something in the fixture.

I'd cover the burnt insulation with wire shrink-wrap and remount it, being very careful in remounting it.
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Old 05-17-2010, 01:14 AM   #8
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*PICS* Light fixture trips breaker/has short *PICS*


The way I can see you have the conductor pintched in the junction box if you noticed where the marking near the screw.

Look very carefull where the burn mark if look pretty deep just cut it off and make a pigtail new wire along the way and when you reinstall it make sure nothing will get pintched again.

Merci,Marc

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