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Thread: 6500 gen/ getting 110/220

  1. #11
    Moderator KHK's Avatar
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    Definition
    A volt-ampere (VA) is the voltage times the current feeding an electrical
    load. A kilovolt-ampere (kVA) is 1000 volt-amperes. Electrical power is
    measured in watts (W): The voltage times the current measured each instant.
    In a direct current system or for resistive loads, the wattage and VA
    measurements will be identical. But for reactive loads, the voltage and
    current are out of phase and the volt-ampere spec will be greater than the
    wattage.
    For determining power, watts are appropriate. For determining capacity
    for the driving circuits (circuit breakers, wiring, and uninterruptible
    power supplies, for instance), VA is appropriate.

    http://www.maxim-ic.com/glossary/def...rm/KVA/gpk/574

    I guess that I have spent to many years in the DC field and have forgotten the AC part of the theory. Sence we are in the generator part of the forum and the loads are mostly reactive I WILL CONCEDE THAT THEY ARE DIFFERENT.
    keith
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  2. #12
    Senior Member jbman45's Avatar
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    That's good info Keith, althought I have done lots of electrical over the years I hadn't understood the difference and this helps, thanks...
    jbman45
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  3. #13
    Senior Member frijoli's Avatar
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    Quote Originally Posted by KHK View Post
    Definition
    A volt-ampere (VA) is the voltage times the current feeding an electrical
    load. A kilovolt-ampere (kVA) is 1000 volt-amperes. Electrical power is
    measured in watts (W): The voltage times the current measured each instant.
    In a direct current system or for resistive loads, the wattage and VA
    measurements will be identical. But for reactive loads, the voltage and
    current are out of phase and the volt-ampere spec will be greater than the
    wattage.
    For determining power, watts are appropriate. For determining capacity
    for the driving circuits (circuit breakers, wiring, and uninterruptible
    power supplies, for instance), VA is appropriate.

    http://www.maxim-ic.com/glossary/def...rm/KVA/gpk/574

    I guess that I have spent to many years in the DC field and have forgotten the AC part of the theory. Sence we are in the generator part of the forum and the loads are mostly reactive I WILL CONCEDE THAT THEY ARE DIFFERENT.
    Reactive loads are the key here, you are correct.
    Clay

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