I just had a guy come in and put a 80 amp subpanel in , it involved running some heavy gauge wiring and buidling a board with all your outlets on it, he made one 240 for the light, one 20 amp 120 volt for the ac and two 4 outlet 20 amps to plug in things like water pumps, theres a timer for the light built into the board, lemme see if I got a picture of it...yeah there it is. I spent a few more bucks and had him put in a 240 outlet and a dryer cord from the board so it can easily be removed and still be a useable 240 volt outlet there, his original plans just called for wiring the board in hard and I didn't like that. before I had this work done I was running extension cords from other outlets and thats not a good idea, I found the cord I run the ac on was burnt at the plug. This is what prompted me to spend about 6 bills running the heavy gauge wire and installing the board. good luck