Author Topic: Cheap F96T12 striplight ballasts  (Read 97 times)
BlueHalide
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Cheap F96T12 striplight ballasts « on: May 18, 2017, 10:24:15 PM » Author: BlueHalide
Just thought ide mention this...The Lithonia 2x F96T12 striplights that Menards recently clearanced appears to underdrive the lamps considerably. I bought two of them, and both measured 104w-106w when operating full power 75w lamps, after installing 60w miser lamps the power still measured the same. 104w is only 52w per lamp assuming no ballast losses. I thought the lamps appeared quite dim to begin with, and the watt-meter just confirmed it. Ive always known the modern electronic T12HO's to run at a 20% reduction or so, but this is the first time ive seen standard normal output being underdriven like this. Dont use your vintage F96T12's in these fixtures!
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Ash
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Re: Cheap F96T12 striplight ballasts « Reply #1 on: May 19, 2017, 02:10:21 AM » Author: Ash
Is there ballast factor rating printed on the ballast ?
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BlueHalide
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Re: Cheap F96T12 striplight ballasts « Reply #2 on: May 19, 2017, 01:43:54 PM » Author: BlueHalide
only "high power factor" is printed, but who knows what the PF really is.
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Ash
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Re: Cheap F96T12 striplight ballasts « Reply #3 on: May 19, 2017, 11:51:20 PM » Author: Ash
Power factor is not same as ballast factor

Power factor = actual power drawn from supply / apparent power drawn from supply

Ballast factor = actual power delivered to lamp / rated power
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