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Thread: Pool pump shorts the breaker, light does not

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    Pool pump shorts the breaker, light does not

    I have a pool pump and light for the ingroud pool going into the same box, with two seperate toggles to turn each off. these connect to the main breaker via under ground to the house. the light toggle does not reset the switch on the main breaker. When i try to turn on the pool pump, it trips on the main breaker. Any ideas on how to problem solve this?

    THanks!
    Matt

    Hayward Pump 3/4 HP - brand new
    sta rite sand filter - not sure of size, i will get back to this
    20 by 40 inground pool, vinyl liner, 8ft deep end
    2 skimmers and a main drain.
    1 jet in the deep end, 1 jet in the shallow end.
    Live in New England = about 3 months of pool usage.

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    Re: Pool pump shorts the breaker, light does not

    The current draw of the pump is higher than your breaker can hold. Either that current draw is high or the breaker is old and worn out. Can you use an ammeter? Can you change a breaker...SAFELY?
    16 x 32 17500 gallons
    Vinyl in-ground
    Hayward 250# Sand Filter
    1 HP Pump
    Hayward SWG

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    In the Industry

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    Norfolk, VA
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    Re: Pool pump shorts the breaker, light does not

    Is the pump running on 120 or 240V
    Pool Light 12V or 120V
    Breaker Amperage

    Personally I wouldn't operate my light and pump on the same circuit, it should be broken down further to another sub panel, especially if your light is 120V
    If your light is 120V it should be GFCI protected
    The starting amperage of a 1.5 HP pump will be around 14A and the light around 5A.
    A 20A Circuit will be just sufficient enough for perfect circumstances, but nothing is perfect especially as your motor ages
    Most likely a bad motor
    Does the motor hum
    Is the motor hot
    Service Manager for Gracia & Vigil. Specialize in concrete pools, commercial and residential, but if the pool is in the ground I can fix it!

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    TFP Guide

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    Re: Pool pump shorts the breaker, light does not

    When describing electrical systems it is easier if we follow the.flow of electric.

    You have a breaker in the main panel in the house that feeds power to two switches out near the pool. These branch off and one goes to the pump and the other goes to the light...correct? If the circuit going to the pump is causing the breaker to trip then there is something wrong with either the wiring going to the pump or a problem with the motor. If you could post some pictures showing the wiring and the connections it may be a big help to us. By the way the wiring description, you have, sounds, there may be some issues with the wiring that may need to be addressed
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

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    Re: Pool pump shorts the breaker, light does not

    i have a bunch of pictures..but i cant get them on here.. all are too big. is there a different way to upload?
    Matt

    Hayward Pump 3/4 HP - brand new
    sta rite sand filter - not sure of size, i will get back to this
    20 by 40 inground pool, vinyl liner, 8ft deep end
    2 skimmers and a main drain.
    1 jet in the deep end, 1 jet in the shallow end.
    Live in New England = about 3 months of pool usage.

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    Texas Splash's Avatar
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    Re: Pool pump shorts the breaker, light does not

    Have you tried linking your photos from Photobucket? That's what many of us do here on TFP. Upload your pics to Photobucket (free), then copy & paste the IMG code for that pic from Photobucket to your TFP post. Works great.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

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    Re: Pool pump shorts the breaker, light does not

    Matt

    Hayward Pump 3/4 HP - brand new
    sta rite sand filter - not sure of size, i will get back to this
    20 by 40 inground pool, vinyl liner, 8ft deep end
    2 skimmers and a main drain.
    1 jet in the deep end, 1 jet in the shallow end.
    Live in New England = about 3 months of pool usage.

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    Re: Pool pump shorts the breaker, light does not

    I replaced the light switch for the pump (left switch in photo) and i heard the motor hm then tripped. I should note that the pump is about 4-5 years old and the wiring is older. I was away for about 3 days and came home to turn on the pump and now I am with the issues I have today. So it wasnt like i left it running and it is covered (in shed) etc.. not sure what gives so sudddenly.
    Matt

    Hayward Pump 3/4 HP - brand new
    sta rite sand filter - not sure of size, i will get back to this
    20 by 40 inground pool, vinyl liner, 8ft deep end
    2 skimmers and a main drain.
    1 jet in the deep end, 1 jet in the shallow end.
    Live in New England = about 3 months of pool usage.

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    Re: Pool pump shorts the breaker, light does not

    i called the store i bought the poop pump from. He said that in the back of the motor, if there are any lines exposed(worn or cracked insulation), that i could put electrical tape around it. He also said the motors on pumps have potential to go at 5 years. I checked the back of the motor and the lines look in good condition (insulation seems to to cover as necessary). Any chance my motor is burned after 5 years? I run it pretty frequently, for the first few years, before i really understood chemical balances, I ran it often 24/7 for most days per week June-sept. In the past 2 years I've run it during the day or just at night. Sometimes running 24/7 when shocking. Could a motor go after 5 years?
    Matt

    Hayward Pump 3/4 HP - brand new
    sta rite sand filter - not sure of size, i will get back to this
    20 by 40 inground pool, vinyl liner, 8ft deep end
    2 skimmers and a main drain.
    1 jet in the deep end, 1 jet in the shallow end.
    Live in New England = about 3 months of pool usage.

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    Re: Pool pump shorts the breaker, light does not

    The impeller is spinning freely. This and the steps above lead me to believe the motor is junk or the capacitor is junk. thoughts?
    Matt

    Hayward Pump 3/4 HP - brand new
    sta rite sand filter - not sure of size, i will get back to this
    20 by 40 inground pool, vinyl liner, 8ft deep end
    2 skimmers and a main drain.
    1 jet in the deep end, 1 jet in the shallow end.
    Live in New England = about 3 months of pool usage.

  11. Back To Top    #11
    Texas Splash's Avatar
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    Re: Pool pump shorts the breaker, light does not

    Well Matt, I know just enough electricity basics to make myself dangerous. But a couple things to consider following your last couple posts:
    - Pump ran fine before you came back home and replaced the switch. Any chance you have the connections backwards? (hot vs. neutral on the switch?)
    - Is that switch rated properly for the amperage? Not all of those simple light switches are rated the same - too much heat perhaps?
    - 5 years service life for a pump; not unreasonable considering how much it was ran; it could've just gave-up
    - If you knew of an electrical shop nearby, you could possibly ask them to do a bench-check for you; however by the time you go through all of that; it may be just as economical to replace the whole unit.

    Just some thoughts.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

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    Re: Pool pump shorts the breaker, light does not

    the pump was running before i was away for 3 days. Before i left, I shut it off. came home after 3 days and it wouldnt fire back up. i replaced the switch and it hms for 1-2 seconds then trips the breaker. I'm beginning to wonder if the motor isnt just fried. I just want to exhaust all potential circumstances before i have it replaced.
    Matt

    Hayward Pump 3/4 HP - brand new
    sta rite sand filter - not sure of size, i will get back to this
    20 by 40 inground pool, vinyl liner, 8ft deep end
    2 skimmers and a main drain.
    1 jet in the deep end, 1 jet in the shallow end.
    Live in New England = about 3 months of pool usage.

  13. Back To Top    #13

    TFP Guide

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    Re: Pool pump shorts the breaker, light does not

    Change the capacitor. They are pretty cheap and a humming motor is a good sign of a bad cap
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

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    Re: Pool pump shorts the breaker, light does not

    Just a thought but have you hit the side of the motor with a mallet. I have seen this work for a motor that was always running 24/7 and then ed off. Just needed a little help to get it to run again. Can't hurt to try!
    8500 gallon IG Pebble Sheen with Spa. 3hp Pentair VS Intelliflo ( pool ), 3/4 hp WhisperFlo ( water feature ),Pentair Racer, 400K Pentair heater, Pentair 500sqft Cartridge filter, EasyTouch 8, Stenner 45mp2 15gallon wired to ET8

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