What was found
SEA FLIGHT 2070 SHORTLY AFTER LIFTOFF NR 2 DC GENERATOR DC GEN HOT CAUTION ILLUMINATED. CAUTION REMAINED ON FOR ENTIRE DURATION OF FLIGHT EVEN AFTER TURNING OFF NR 2 DC GENERATOR. MAINTENANCE TROUBLESHOT SYSTEM AND FOUND WIRES, 77A20N, 715D20, 78A20, 76A16, AND 75A20 INSULATION CHAFED APPROXIMATELY 3 FEET FROM NR 2 STARTER GENERATOR CONNECTOR P16. REPAIRED WIRES IAW PRATT AND WHITNEY MM 72-01-10. NO PARTS REPLACED OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.