What was found
AIR TURN BACK. EICAS MESSAGE; RT GENERATOR OFF DISPLAYED, RT GENERATOR OFF LIGHT ILLUMINATED, GENERATOR SWITCH RESET DID NOT CORRECT CONDITION. FIELD OFF LIGHT ILLUMINATED. FOUND WIRE W3538-301Y-18 PMG CHAFING ON HPSOV DUCTING. DIRECT SHORT TO GROUND. PRIMARY INSULATION DAMAGED, CONDUCTOR OK. REPAIRED WIRE IAW SWPM 20-10-13, REPAIR P3A. OPS CHECKED NR 2 ENG IDG, OPS CHECKED GOOD, NO FAULTS NOTED. VERIFICATION FLIGHT FOR RT IDG COMPLETED. SYS OPERATED NORMAL.