Can't speak for Rbaha, but I had an electrician wire me up for 60 amps (3 20 amp circuits, told him it was for a "man cave") in my garage.
Have a dehumidifier, 1KHPS, 400HPS, 300 watts of fluorescents, fans, pumps, a heater, and random odds and ends.
Probably running ~2300 watts right now, but...