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Old 12-27-10, 02:45 PM   #13
Xringer
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Quote:
Originally Posted by Ryland View Post
Remember that a CFL that has say a 15 watt label on it does not draw 15 watts but instead draws closer to 23 watts, plug it in to a kill-a-watt meter and see for your self, then look very closely at the base of the CFL and you will almost always find a amp rating, multiply the amp rating by 120 volts and you will get a higher wattage then it should be.
LED's do not have this labeling issue.


I buy 100w replacement CFL tubes for almost all my lighting needs.
I would not buy one that was marked over 23 watts.
I don't think that I've seen many that were marked higher than 23w..?.


Anyways, when you want to know the power your CFL is using,
you should look at the Watts reading on the Kill-a-watt meter.

If you are going to just read the Amps and, "multiply the amp rating by 120 volts",
you have just calculated the VA (VoltAmps).
To get the watts, you have to multiply your product by the PF (Power factor).

So, you can press the button, and get the Frequency (60hz), Volts, Amps, PF, VA and watts..

Watts= amps x volts x PF works for some folks, but I just keep
pressin that button until it shows me the watts..
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