Can anyone please tell me why my main circute braeker keeps going off when I turn on the pool filter pump?

I bought a new motor for my pool, since then I am haveing problem with main braeker. If I do not turn on the pool filter ---the new motor--- I have no problem.

When I do turn on filter, 2 hours of runinig the main braeker goes off. Can anyone tell me why?

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  • Anonymous
    1 decade ago
    Favorite Answer

    Are you sure you're talking about the main braker? Cause that is the switch that would shut off EVERYTHING in your entire house. First thing to do is to check the electrical connection of the pump at your pool filter. Make sure it's attached securely, the wires aren't touching anything else that might be causing a short circuit, and that there's no water contacting the wires. I presume the cable from the motor to the electical panel in your garage or house is run through conduit underground. If not (which would be illegal if not in conduit), check along the length of the cable for any cuts, etc. Check on the filter motor for the amperage rating. Then go to your electrical panel and make sure that the circuit it is attached to is not a lesser amperage. For example, if your motor is rated at 20 amps, it CANNOT be attached to a 15 amp circuit. You can tell the circuit amperage by looking at the switches in the electrical panel. Each switch will have a number on it (15, 20, 30, etc). These are the amperages of each circuit. Your pool filter should have a dedicated circuit; meaning the cable from your filter should be going directly to the electrical panel and attaching to its own circuit. No other devices should be sharing that circuit. Is your electrical panel full? Maybe you have a panel overload. Check if you have a 100 amp (cheap piece of crap) panel or a 200 amp panel. If you have only a 100 amp panel, maybe you have too many things running that could cause an overload (running air conditioning, washing machines, etc while also running the filter). If you have a 200 amp panel, then an overload should not be the problem. The problem is definitely one of the things I mentioned, so check it out and good luck.

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  • 1 decade ago

    The overload (reason breaker trips) is probably due to current going thru too many switch points from main feed. Rewire a circuit from main power panel to pool motor. Check to make sure amp rating of breaker and wire (most important) is of adequate size to handle load defined on motor nameplate. If number of swithch points is six or less, the problem may be a section of wire is too small for load.

    Source(s): master electrician - 13 years experience.
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  • 1 decade ago

    Check to see that you installed the motor using the correct jumper setting in it's electrical compartment. All pool motors come factory wired for high volt, you need to change the jumpers to set it for low (110), if that's what the line to the motor is carrying. It would cause the motor to run slowly, in this case, not at it's normal speed and would eventually cause a trip somewhere.

    Other than that, I can only think of high humidity and heat, which we have now, that can cause a GFI breaker to trip.

    Source(s): Pool service tech / builder 15 years
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  • Anonymous
    1 decade ago

    Main Breaker- do you have a breaker on the pump circuit, it should go off before anything else- something is getting hot. If this did not happen before, its in the motor or the way you wired it. Is the new motor the same amps and watts as the old one. bet that is your problem.

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  • Anonymous
    1 decade ago

    The pump you have bought is drawing too much power and overloading your electrical system.

    You need to get some help from an electrician to solve this issue or don't run the pump too much, alternatively make sure you are not running other electrical items at the same time [washing machines etc.]

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  • Anonymous
    1 decade ago

    When you run your pool filter for two hours, then there is a certain amount of heat generated, When there is heat, there are some lose terminals that either connect to the Body of the Motor.

    this leakage trips of the ELCB. its designed to trip off in case of Earth leakages only, so it saves lives.

    So have your equpiment checked by a professional electrician only. and the circuits.

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  • Son of Brunhilde covered all the bases. Follow his advice and you can solve your problem.

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  • 1 decade ago

    Maybe, there is a short somewhere. That's kind of what it sounds like.

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