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question about efficiency of generators

Discussion in 'Photovoltaics' started by [email protected], Jul 3, 2006.

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  1. Guest

    have a (new) 90 amp dls-90 iowta battery charger, drawing 1500 watts;
    occasionally, will need to charge a 2000 amp hr battery bank at 12 volts;

    someone gave me an old 1800 watt 3.5 hp craftsman gas generator,
    which took a few hours to fix; also have a 5500 watt no-name
    gas generator;

    which generator is expected to be the most efficient at producing the
    electricity, the 1800 watt running at about 80% capacity, or the
    5500 watt running at about 25% capacity?

    am thinking of putting 1/2 gal of gas in each, and making an attempt
    to measure input, but my "cheap" meters loose all information when
    power is cut; any suggestion on how to accurately measure the input?

    thanks for any suggestions

    Paul
     
  2. No question, the 1800W running at 80%. Check the recent discussion in
    alt.energy.homepower about generator fuel consumption.
     
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