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Old 01-25-2013, 10:31 PM   #1
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wiring off a gfi trips the circuit


Computer glitch---post removed as it didn't make sense

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Old 01-25-2013, 10:35 PM   #2
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wiring off a gfi trips the circuit


wiring in a digtable light timer trips the GFI . help !!!

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Old 01-25-2013, 11:50 PM   #3
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wiring off a gfi trips the circuit


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Originally Posted by jim Pacini View Post
wiring in a digtable light timer trips the GFI . help !!!
Can you give a bit more detail...gfci receptacle or gfci circuit breaker? Plug in timer or hardwired timer? Is the timer wired off the load protection of a gfci receptacle etc..
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Old 01-26-2013, 01:02 AM   #4
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wiring off a gfi trips the circuit


what make and model timer ?
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Old 01-26-2013, 07:32 AM   #5
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wiring off a gfi trips the circuit


If you connect anything to the "load" terminals of the ground fault interrupter unit then that portion of your circuit is a "subcircuit" that must not be connected to the incoming neutral or hot and must not be connected to the hot or neutral of another circuit.

The load terminals are not simply another pair of screws to hitch wires to. If two wires want to go under one screw, connect a short length (pigtail) to the screw and then connect the loose ends using a wire nut.

Be sure to connect the incoming feed to the "line" terminals, not the "load" terminals.

Do not connect the ground (green or bare) wire to the neutral (white) wire at any outlet box up in the houss. If you unhitch the ground wire from the timer and then everything works then your timer may be using ground for a neutral and that is incompatible for use with a GFCI and is also not code compliant in any situation.
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Old 01-26-2013, 08:19 AM   #6
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wiring off a gfi trips the circuit


Some of those digital timers use the ground connection for internal neutral purposes. That type of imbalance can trip out a GFCI unit.

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