In my area, Outer Banks of North Carolina, we have many large vacation/rental homes and no municipal gas service so everything is electric (except for propane in rare instances). Any service over 400 AMP we go to C.T.'s in a cabinet and the power company has no problem with this and we require no special engineering for this. The largest I,ve done is a 12,000 sq. ft. home with a 1,200 AMP service.
