How To Run Power To A Shed With An Extension Cord. (3) where run through doorways, windows, or similar openings. , the best method might be to run a separate power line buried through the ground.
30 amp break should handle shed based power tools fairly well. An extension cord can under no circumstances be buried, and it must be unplugged when not in use.
1 Way To Store An Extension Cord Extension Cord Cord
As long as it is gfci protected, and it should be, uf cable can be run under ground. Attach any desired fixtures in the shed or on outside and run wire as needed.