Running a pump from a generator

Discussion in 'Pumps and Tanks Well Forum & Blog' started by tmartin, Apr 23, 2008.

  1. tmartin

    tmartin New Member

    Messages:
    2
    I have a 2hp irrigation pump set up for 230v. I want to use it to fill a water truck from a creek to fill stock tanks. Would there be any problems with running it off of a gas powered generator? What should I be concerned about?
  2. valveman

    valveman Moderator Staff Member

    Messages:
    4,486
    Location:
    Lubbock, Texas
    As long as the generator will start it, then it will run fine. Might start with a 3500 watt, may take a 5,000.
  3. alternety

    alternety Like an engineer

    Messages:
    671
    Location:
    Washington
    When you start a big electric motor there is a short but large surge. The generator must be rated to handle that surge. The continuous load rating of the motor and generator can be the same, but the generator has to take the surge. This may mean a generator rating larger than otherwise needed for continuous use. Some generators are better about this than others. Check specs.
  4. Mr_Pike

    Mr_Pike New Member

    Messages:
    136
    Location:
    Nebraska
    Isn't a two HP something like 1500 watts?

    We run pumps on generators all the time. Just make sure you have enough generator for the job and grounding protection in place.
  5. valveman

    valveman Moderator Staff Member

    Messages:
    4,486
    Location:
    Lubbock, Texas
    1 HP equals 745.7 watts. But start up takes about 6 times that much.
    Last edited: Apr 23, 2008
  6. tmartin

    tmartin New Member

    Messages:
    2
    Thanks for the info.

    I believe it is a 6000 watt generator. It has a 230 outlet. It runs an electric jack hammer pretty well. I was trying to save some money by using an electric pump and a generator that I already had, but I think I will just buy a gas powered irrigation pump. I don't think I have room for both the pump and the generator on my truck. I think a two inch pump and a five horse engine should work good enough for filling a water tank. Thanks for all the input.
  7. speedbump

    speedbump Previous member

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    4,540
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    Riverview, Fl.
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