Some devices have reactive elements that draw current but not dissipate any power.
Is that possible? Yes, absolutely.
Pure capacitance or inductance will draw significant current, but no power.
P=E*I*cosine(theta) where;
P=power, E= voltage, I= current, and theta is the phase angle between the voltage and current.
A pure inductance or capacitance have phase angles between voltage and current of +90 degrees and -90 degrees respectively.
Cosine of +90 degrees or -90 degrees is zero.
If your smart meter is measuring Volt-Amperes (VA) then you are paying for any reactive loads you draw, even if the real power dissipated is zero.
VA=E*I
Time to find out what's inside that power conditioner!
Tom
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Last edited by W9TR; 12-01-2017 at 11:46 AM.
Reason: clarity
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