Oh so you can just plug it in the wall? I am planing on going with 250Watt. Right now working on trying to get a 120V 250W MH ballast or put one together. Later down the road or if can I want to use a HPS for the flowering room so I guess I would need another ballast as well. The outlets are all from 1 room and I can and able to use its own outlet if need be. I mean I would most likely have a timer with it.