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Volts Amps Watts Help I'm Dumb

Discussion in 'Electronic Basics' started by BOnepaIn, Jun 7, 2007.

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  1. BOnepaIn

    BOnepaIn Guest

    If I buy a generator that produces 1000 watts @120 volts which makes
    8.3 amps, but use the 12 volt outlet plug how many watts and amps
    does it make? I'm talking about this generator

    It has 120v and 12 v outputs and states it makes 1000 watts at 120
    volts; how many watts and/or amps at 12 volts (for charging a deep
    cycle marine battery)?
  2. There is not way to tell.

    This manufacturer's data sheet doesn't mention the 12 volt
    output at all.
  3. Correction.

    On page 21, the drawing shows a DC rectifier, DC receptacle
    and DC circuit breaker. But it looks pretty small. Perhaps
    tapping off the excitation circuit. I would guess a few
    amps max.
  4. Eeyore

    Eeyore Guest

    The 12V output is presumably DC ?

    It's anyone's guess. What does the manual say ?

  5. Jasen

    Jasen Guest

    It's most unlikely to be more than 83A
    12V won't be enough.

  6. Guest

    I've a generator that looks identical but is (UK) rated at 750Watts.
    The 12V out is marked at 8.3Amps.
  7. Lord Garth

    Lord Garth Guest

    Odd the manufacturer didn't label the 12 volt output as AC or DC.
    I'd hate to hook it to a battery that needs recharging without knowing
    the answer.
  8. Rich Grise

    Rich Grise Guest

    The chances are 99.999999999% in favor of it being DC - I've never even
    _heard_ of an AC generator with AC on the auxiliary 12V connector.

    If it wasn't suitable for battery charging as it is, they probably
    wouldn't have said that so in the ad.

    Hope This Helps!
  9. In the exploded view, they list DC receptacle, DC rectifier
    and DC circuit breaker. I would like to see the current
    rating on that circuit breaker. They must not be too proud
    of the DC output, because they don't advertise either a
    voltage or current spec for it. I'm betting it is a very
    crude 12 volt output good for a few amperes (less than 10),
  10. As a possible comparison, my Honda EU2000i, with the 120 VAC output
    rated at 1600 VA, provides a DC output rated at 8 A max, for charging
    12 volt batteries. (the actual voltage of the DC output is not
    specified.) It is much more efficient to use a 120VAC battery charger
    than to use the DC output to charge a battery.

    Peter Bennett, VE7CEI
    peterbb4 (at)
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  11. Lord Garth

    Lord Garth Guest

    I'd like to see what charger circuit they use for the 12 volt portion of the
  12. Lord Garth

    Lord Garth Guest

    Only the most crude of chargers, I'm sure.
  13. Lord Garth

    Lord Garth Guest

    Exactly as I feel.
  14. neon


    Oct 21, 2006
    watts is the product of amps x volts so 1000 w is the total product available you can change the volts or you can change the amps as you like but the total can only be 1000w that is the criteria more then that adios generator.
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