I highly suggest putting your cooling methods on the same circuit as your lights, if possible. You want them both going out at the same time if something trips a breaker, or you could kill your plants with too much heat or cold.
neceros Reviewed by neceros on . how many amps needed for grow-room Got a lot of questions and here is one that must be right- how many amps for 2- 1000 watt HID,s an AC window unit when needed also a dehumidifier - exhaust fan- and 2 circulation fans- I easily have 50 amps available an could with some work get another 20 amp circuit - getting ready to order gear in a week or so and trying to get my wiring needs resolved first Rating: 5