WHILE CAMPING IN A CAMPSITE AND CONNECTED TO SHORE POWER THE IOTA 50 AMP AUTOMATIC TRANSFER SWITCH (ATS) SHORTED AND CAUGHT FIRE. THERE WAS SMOKE IN THE CABIN AND FLAMES COMING FROM THE ATS WHICH EXTINGUISHED THEMSELVES BEFORE THE FIRE EXTINGUISHER COULD BE RETRIEVED FROM THE FRONT OF THE CABIN. *JS THE RESULTING DAMAGE BESIDES THE ATS ALSO INCLUDED MAINLINE WIRING TO THE SHORE POWER CONNECTION AND THE MAIN CIRCUIT PANEL. COSTS OF REPAIR EXCEEDED $1,000. THIS THE SECOND TIME A FIRE HAS OCCURRED ON AN IOTA 50 AMP ATS IN THIS PARTICULAR VEHICLE PREVIOUSLY BEING REPORTED IN OCT 2010. THE PLACEMENT OF THE UNIT IS DIRECTLY UNDERNEATH A WARDROBE IN THE BEDROOM AND WITHIN INCHES OF THE BOTTOM DRAWER. THIS IS AN EXTREMELY DANGEROUS SITUATION AND A PRODUCT THAT HAS AN OBVIOUS HISTORY OF SHORTS AND FIRES. WE WERE FORTUNATE THAT SERIOUS INJURIES WERE AVOIDED. *JS