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08/04/2007, 03:57 PM | #1 |
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Join Date: Dec 2005
Location: Auburn, AL
Posts: 1,124
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Measure wattage from wall socket?
Is there any way to measure the amount of wattage being used via the wall socket without a Kill-a-Watts ?
I'd like to find out if my 175W ballasts are really 175W or not. Thanks
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08/04/2007, 04:29 PM | #2 |
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Join Date: Mar 2007
Location: VA
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You could take an extension cord, cut off the outer jack and use a clamp on multimeter to measure the amperage and voltage of the hot line. Then do some math watts = volts * amps.
You can use a non clamp on meter but you'll have to cut the hot wire in half and hook up the probes. This gets more dangerous as your dealing with an exposed wire.
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08/05/2007, 11:19 AM | #3 |
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Location: Auburn, AL
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Hmm... ok.
I wasn't sure if the good 'ol physics P=IV rule really applied to real life or was just a mathematical model. Thanks for the help
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The 0ne. The 0nly. The0wn4g3. Current Tank Info: 40 gallon Rimless- 39Wx4 T5HO on Ice-Cap 660, 29gallon sump, DAS EX-2, Deltec Phosphate Reactor, Koralia 3, 50lbs LR |
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