1500 Watt Inverter for Sump Pump

Discussion in 'Pumps and Wells' started by AmyMarie71, Apr 18, 2019.

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  1. Apr 18, 2019 #1

    AmyMarie71

    AmyMarie71

    AmyMarie71

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    I have a Zoeller 1/3hp sump pump and would hope that a 1500 watt inverter with initial surge of 3000 would be plenty. However, I was told that if the initial surge of the pump is a second or more, this inverter will not work. The initial surge of 3000 watts from the inverter to the pump is less than a second and if the pump takes longer than that, 1500 will not work.

    I am guessing that on average, a 1/3hp sump pump can have an initial surge (starting watts) of 1300 to 1800 with running watts of around 800 (estimated). This inverter should be plenty but again, it's the amount of time it takes the pump for the initial surge.

    Should I be ok with 1500 watts? I am purchasing online so any/all advice is appreciated!!
     
  2. Apr 20, 2019 #2

    phishfood

    phishfood

    phishfood

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    I have had great service from donrowe.com

    They have always been very willing to offer me advice.

    Pumps can be hard to get started, as I have learned with an inverter system and air compressor I have mounted in my service truck. But I don't have any experience with a sump pump system.
     
  3. Apr 20, 2019 #3

    Diehard

    Diehard

    Diehard

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    You may also want to try an electrical forum or a home repair forum. I know the home repair forum has a lot of expert help regarding electrical questions.
     
  4. Apr 27, 2019 #4

    FishScreener

    FishScreener

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    A horsepower is 745-Watts. A third horsepower is thus about 250-Watts. Starting inrush shouldn’t be more than 4-times greeter than running current. So, that should be around 1000-Watts.
     

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