Quote:
Originally posted by Since87
BTW, the larger Iwaki's (MD-20 and up) seem to have a power factor correction capacitor to reduce the difference between VA and Watts.
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I thought those were startup caps, to prevent a large power draw, when you turn it on?
Wouldn't a meter compensate for the inductive load? I mean, if it measures current, and the current is cyclic (i.e. AC), then shouldn't it still give off a good reading?
From what I remember in electronics courses, P=VI, but in AC circuits, you have to use the RMS values: 127 Vac, is actually rms, aka averaged, as the peak is somewhere around 170 volts. RMS is the actual average value over the sine wave in the AC signal.
I don't see the numbers being off by too much: if the pump was almost completely obstructed, you should get the max power rating of 45 Watts, no?