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Old 01-30-2018, 05:16 AM   #10 (permalink)
redpoint5
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Acura TSX - '06 Acura TSX
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Quote:
Originally Posted by oil pan 4 View Post
Volt-amp is a better measure of somethings power supply inefficiency, plus I have found the power company charges for watts but penalizes for low power factor when your volt amps are higher than watts.
For example CFL with their tiny cheap ballast will use 23 watts and 40 volt-amps on a 100w replacement, so they are really only about double the efficiency of a regular 100w light bulb which also uses 100va.
How does the utility penalize for low power factor? I thought the meter measures watts, and that's what you pay for?

Concerning T5, I probably wouldn't install them in my garage these days. I wasn't happy with how quickly one of my bulbs went out, and they don't perform so well in cold temperatures, and they take a while to reach full brightness. I'd probably go LED now.
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