What are the code requirements for food vendors that work out of an enclosed trailer? (16' X 8') We have a vendor that has the electrical panel located right above the wash sink. It is powered by a 3kW portable generator for lights and receptacles. Does the working space requirements in 110.26 still apply even though they will never work on the panel energized? I see an awful lot of these food trailers around and I wonder how they get by with the inspections.