i understand you are RENTING. stop and think a minute. how far from the existing house is the shed? SINCE its your shed, install a 30-60 amp 110V mini breaker box In IT. NOW......... lets say its 20 feet from a wall of the house. have the electrician install a heavy duty 10-12ga 3 wire cord, 22-25 foot long. at the house, have electrician install a heavy duty EXTERIOR 110v RECEPTICAL on the outside wall nearest to shed. i dont imagine the landlord would mind if you dug a small trench, that would accomodate a schedule 40 pvc pipe 2" or underground electrical plastic pipe, so you could run the cord inside of it. now when you leave, you can just pull the cord and leave the pipe or dig up the pipe and take it. only thing you did was GIVE the homeowner an exterior 110v receptical on that side of the house.