Is it better to go with a lower wattage light on a higher factor ballast, or a low factor ballast with a higher wattage light.
Such as 32 watt T8 with a low BF ballast of .75 vs 28 watt T8 on a normal .88 ballast?
The output should be about the same in both cases, so which is more efficient? Is one way going to cut the life?
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