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Would you not theoretically gain a slight efficiency advantage with higher voltage (ie. less heat produced by the ballasts)?
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If there is something like that, my guess is it's minimal or negligible. Of all the stats/specs I read about ballasts, they all more or less have the same "wattage" (which is roughly amps times voltage, give or take) regardless of what input voltage is used.
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Overall power draw on the circuit is voltage x amperage; which should remain the same for both a 110 and a 220v setup. However power lost to heat is
[correction : resistance x current squared] so a 220v setup should have less than a 110v and thus the difference should make it to the lamp given a constant line resitance.
Anyways, consider it a proposed experiment for someone with a 220v hookup and a PAR meter
.[/i]
02-11-2004, 11:42 PM
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