Opps, I meant 550, and 225. Thanks Dennis.
I am not sure 550 covers what you are doing.
I find it odd that a portable shed would need 50A.
In my village, sheds under 100 sq ft do not require a permit.
If it really needs to be portable, I don't see how you could wire it up without having some kind of plug and cord connection. Not sure just how you would accomodate a GE at every location it might be placed at though.
OTOH, just how far does it have to be moved. I know some people that have chicken coops move them periodically, but it is only ten feet or so.
If it is moved between several different fixed locations, maybe a pedestal at each location is in order with a GE there, and a short cord.
Just curious how long of a cord you are planning on. A 50A cordset is not real common and finding an outlet to plug it into is not common either.