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.




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