Posted by John T on April 19, 2011 at 05:47:38 from (173.243.189.183):
In Reply to: Figuring watt draw?? posted by dave2 on April 19, 2011 at 03:26:42:
Dave, to answer your questions:
1) Does volt x amps = watts? YES if you have a Unity One Power factor NO if its not a unity One Power Factor
2) Or is it more complicated than that? YES its more complicated then that
A pure resistive load has a unity one Power Factor, but a high inductive load such as an electric motor or a transformer does not. However, its possible to use a capacitor to offset the inductance which can improve the Power Factor. With an inductive load current lags the voltage but with a capacitive load voltage lags the current (Im sure that helps lol)
Volts x Amps = a Volt Amp, but is only a Watt when you have a Unity One Power Factor CLEAR AS MUD IM SURE LOL
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