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my house is standard 120v but i have 250v in the garage for the dryer machine plugs. if i change the outlet is it possible to safely run some 240v digital ballasts on those? or does it require me hiring an electrician to wire my house for 240? all i am trying to do is grow in a growtent with...

i have 16 lights in my room and i need some quick pointers and help. they are all 1000w hps. air cooled hoods.with digital ballasts. and are in rows of 5 i have a huge 12"vortex sucking air into the room. and another 12 sucking air out. i have a 8'' vortex for every row of lights (5 lights on a...