hps lights 110 or 220 ?

[hondo]

:confused: I have 2,1000w hps and 2, 400w hps lights. All can be run 110 or 220 volts.Will the ballasts use less electricity if they are run 220v instead of 110v,or will they run cooler.What is the purpose of this .Any replies would be appreciated.

[latewood]

they will run cooler at 220; ;) Unfortunately they still SUUUck :( the same amount of electricity. So you have to weigh your options...A. Heat,
B. Expense for wiring 220 circuit to grow room...It would be nice :)