I looked in article 530 and 230.  So it's going to be under 50amps being used inside so I was thinking surface mounting a small panel outside, and connecting a S/O cord to it and back feeding the panel with it.  Would this be acceptable?  I was thinking the S/O cord should be GFCI protected always.  Do they make a GFCI  plug I could attach to the S/O cord?  Thank you for your help.
	
		
			
		
		
	
				
			
				