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BruceRidenour

05:48PM | 03/26/06
Member Since: 03/25/06
39 lifetime posts
Bvelectrical
I've installed a gfci breaker on my panel and connected an exterior light to it. When I turn the switch on it trips the breaker. When I disconnect the light from the wires and turn on the switch, nothing happens. With the light disconnected, the test button works as it should. I connected a different light and it still trips the breaker.

I'm wondering what I did wrong.

Any help?

Thanks!

Bruce

Billhart

07:19PM | 03/26/06
Member Since: 04/25/05
1915 lifetime posts
Well the light fixture could be bad.

But I suspect that it is a wiring problem.

Take the bulb out of the fixture. Does it still trip when you turn the switch on?

If not then it is a wiring problem. Most likely the neutral to the light is either connected to the neutral for the wrong circuit or the neutral for that circuit is connected to the ground or another circuit's neutral some place.

But the first place is to verify tht the breaker is correctly installed with the neutral pigtail from the breaker connected to the neutral bus.

And the that neutral from the RIGHT circuit is connected to the neutral terminal on the GFCI breaker.

If none of lead to the problem check the light fixture. Look for a pinched wire or wire strand that did not get into the wire nut.


BruceRidenour

02:26AM | 03/27/06
Member Since: 03/25/06
39 lifetime posts
The breaker trips when the bulb in the light is removed. However, when I wired in a different light, the breaker didn't trip with the bulb removed. On that same note, the breaker did trip with the bulb in the different light fixture.

Thanks!

Bruce

BruceRidenour

02:55AM | 03/27/06
Member Since: 03/25/06
39 lifetime posts
I forgot to mention in my last post that the fixture that I'm installing has a photo sensor to turn the light on when it gets dark.

Thanks!

Billhart

03:48AM | 03/27/06
Member Since: 04/25/05
1915 lifetime posts
Don't know why the light with a photocell would cause a problem. But it is other wise a plain fixture? Or is it mercury vapor or sodium light or does it have a motion sensor.

Sounds like a bad fixture.


BruceRidenour

03:16PM | 03/27/06
Member Since: 03/25/06
39 lifetime posts
Your first assessment turned out to be the right one. The neutral wire was not connected to the breaker but instead to the neutral bus terminal.

Thanks so much for your help!

Bruce
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