What was found
(CAN) DURING TAXI, CREW HEARD A LOUD BANG IN FLT DECK ASSOCIATED WITH NUMEROUS AC CIRCUIT BREAKERS (CBS) POPPING. AC FUEL PUMP & RT WINDSHIELD HEAT CBS AMONG THOSE POPPED. INITIAL INSPECTION, IT LOOKS LIKE 5 CABLES ARE COMPLETELY BURNED THROUGH AND 6 OTHER CABLES ARE SHOWING SIGNS OF DAMAGE AT STN X-34.100, UNDER CENTER FLOORBOARD. THE SYS WIRING INVOLVED IS RT ENG INTAKE ADAPT HT, INTAKE LIP HTR ENG 2, RT AOA VANE HTR, AUX FUEL PUMP 2 FEED, LT & RT WINDSHIELD HEAT, PILOT SIDE WINDOW HEATER. THE DAMAGED WIRES FOUND DURING OUR INVESTIGATION HAVE NOW BEEN REPAIRED. MFG IS INVESTIGATING THIS EVENT TO DETERMINE ROOT CAUSE.