returning for the winter after setting up on new land in june. shed has windows but nothing else. the electrical wires were not up to code so getting power to the kiln and only one 4 outlet box next to the doorway was expensive. since i work alone i can use all four of those 20 amp outlets with tools plugged in off long thick extension cords permanently mounted along walls. 100 amps come from the pole just outside so kiln run is very short. do not use any extra amps while kiln is running because i must leave the space.