Question about Square D QO115GFI QO Circuit Breaker
Problem with Square D QO115GFI QO Circuit Breaker I installed a qo115gif breaker in my residential panel, everytime I switch on the breaker next to it, the gif breaker trips. If the breaker next to it is off, the GFI breaker works fine. They are on separate circuits in the house. The GFI breaker is only affected by one other breaker in the panel. Any information would be greatly appreciated. Thank you very much.
I happen to have one of these in the box, so I've reviewed the installation & on-line literature for this model. Let's address installation notes:
Don't connect more than 250 ft of load conductor for the total one-way run, to prevent nuisance tripping.
The breaker is to be used on grounded power supply circuits only. We're talking a properly-grounded breaker box, not just the protected circuit.
Look at the side of the breaker. You will notice that the curly white wire is meant to be connected to the (properly grounded) neutral bar in your panel.
The circuit neutral that you're protecting should be landed on the terminal just above that curly wire. Make sure you have the right neutral!
The circuit's hot wire would of course be landed on the topmost screw.
You did not state what you mean by "the breaker next to it": just above, just below, or directly across from the GFI breaker?
I suspect that you meant just above or below the GFI breaker. And I assume you've swapped out other breakers to rule out a defective breaker.
Now, it is possible that you have a "shared neutral" situation. It's a common wiring practice to use one neutral wire for two "hots", where one circuit is fed from the phase A side and the other is fed from the phase B side, (which you'll have in a two-pole, 220V breaker), picking up a 110 volts from each phase. The two 110v "Hots" share a single neutral wire between them to carry return current. The phase shift between the two phases allows this.
However, to avoid nuisance tripping of your GFI, your protected circuit cannot share neutrals with another circuit, as the "other" circuit's operation will cause the 6 milliamp differential between current out (hot) and current return (neutral) which the GFI by design senses and trips.
Your GFI-protected circuit probably needs its own dedicated neutral!
I'd like to hear what you find. Good luck!
Posted on Feb 24, 2012
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Posted on Jan 02, 2017
if you have another breaker, try installing another one.(i have gotten bad ones from new all ready). if you dont have another breaker, disconnect or unplug what ever is controlled by that breaker. if it still does it while everything is unplugged/disconnected, there is a short in the line.
Posted on Jun 26, 2009
SOURCE: The garbage disposal & overhead
I would start by replacing the breaker. If a new one trips then check ground and wiring. If it still trips then there must be a problem with the garbage disposal. let us know
Posted on Sep 21, 2010
SOURCE: I need a 15A GFI
That number in the heading is not correct. While you might find a breaker that "fits" your panel there is no other brand that is listed to work with your panel The correct number would be HOM115GFICP If you can't find it locally, there are many locations you can order one from online. I don't know where you are locatged, but an electrical supply house or even homedepot should have one.
HOM115GFICP If you can't find it locally, there are many locations you can order one from online. I don't know where you are locatged, but an electrical supply house or even homedepot should have one.
Posted on Nov 22, 2010
SOURCE: I have a square D
A shunt trip breaker operation.
It works just like a normal circuit breaker with one additional function. A shunt-trip breaker also has a built-in magnetic coil that can be energized externally to trip the breaker. So what is wired to the shunt that is not letting the breaker reset?
Read more: http://wiki.answers.com/Q/How_does_a_shunt_trip_breaker_work#ixzz1EXNCP5r0
It works just like a normal circuit breaker with one additional function. A shunt-trip breaker also has a built-in magnetic coil that can be energized externally to trip the breaker.
So what is wired to the shunt that is not letting the breaker reset?
Posted on Feb 20, 2011
SOURCE: I have booster pump on
It may or may not, depending on the root cause of the GFI tripping. If the GFI is faulty (which does happen) then yes. However if you have a problem with the motor or the circuit to the motor then you will still have issues and the GFI was doing it's job.
Since you already purchased one go ahead and install it and see if it works then go from there.
Posted on Jun 16, 2011
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