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In Reply to: PFC numbers? posted by pictureguy on August 12, 2014 at 19:07:13:
First off, watts = power factor × amps × volts.
So when you say 1 amp at 120 volts equals 120 watts.....that would only be true with a power factor of 1. If you had something that drew 1 amp at 120 volts with a power factor of 0.8 then it would be 96 watts.
The problem for the power company is it must size wire to deliver the 1 amp at 120 volts despite the fact that they bill for 96 watts (because of a power factor of 0.8). If you "corrected" the power factor to one then you would draw less current (your volt amps would go down).
BTW, 0.8 is a rather typical power factor. In fact most generators are speced assuming that power factor.
Hope this helps.
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Follow Ups
- RE: Your question is flawed - Russ57 10:35:34 08/15/14 (9)
- RE: Your question is flawed - pictureguy 14:38:14 08/15/14 (0)
- RE: Your question is flawed - pictureguy 13:37:15 08/15/14 (7)
- RE: What? - Russ57 15:35:35 08/15/14 (6)