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Old 12-14-14, 09:04 AM   #22
ecomodded
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Quote from bennelson Blog:
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Next, I pulled out my Kill-a-Watt energy meter and tested each set of bulbs. Both measured zero with the fixture off. (Always nice to check on phantom loads!) Testing the Fluorescents, they clocked in at 58 watts energy use for the pair. (This energy meter only measures to the watt, no fraction or decimal.) That’s 29 watts each – LESS THAN the rated 32 watts listed on the bulb. I then tested the LED tubes – 39 watts for both, or 19.5 watts each – just a hair MORE than the 19 watts on the label. So although the LED bulbs use only two-thirds (67.24%) the energy of the fluorescent, I was surprised that the fluorescent tubes did use less energy than I thought. I’ll call this one a tie – the LEDs did come in as the winner on energy use, but the fluorescents were more energy efficient than I expected them to be!
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I tested a set of 4'ft T8's earlier this week with the KillAWatt meter and got the same results , 57-58w , If they were as good as they rated them they would output 64w for the bulbs plus 10% for the ballast it should read 70w. They appear to be using a Asian marketing trick to sell us. take the 10% off the 58w and you have true bulb output of 52w or 26w each.

easy prey for the LED's

Last edited by ecomodded; 12-14-14 at 09:13 AM..
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