It isn't just NJ.
Mobile Homes (AKA= caravans) are typically manufactured to HUD standards which as a Federal regulation superceeds state and local rules.
The HUD rules are in part 3280 of the Federal Registery.
section 3280.804(f) "The distribution panelboard shall not be located in a bathroom, or in any other inaccessible location, but shall be permitted just inside a closet entry if the location is such that a clear space of 6 inches to easily ignitable materials is maintained in front of the distribution panelboard, and the distribution panelboard cover can be opened to its full position (at least 90 degrees). A clear working space 30 inches wide and 30 inches in front of the distribution panelboard shall be provided. This space shall extend from the floor to the top of the distribution panelboard."
The basic rule is if it has a HUD label all you look at is the park equipment and the connection to the breaker in the panel in the home. I always note the HUD number on my inspection report. Watch for the HVAC guy that might put the ground on the neutral bar.
Note there is a bare #8 with lugs at the tail light end that ties the frames of double wide units together. Make sure they make the connection.
Many still consider Elkhart as the MH/RV capitol of the world.
