What was found
WHILE ENROUTE, APPROX 10 MINUTES INTO THE FLIGHT, THE NR 1 GEN DISCONNECTED LIGHT ILLUMINATED ON THE CAD. COMPLETED THE EMERGENCY PROCEDURE IAW THE RFM. THE GENERATOR WOULD NOT RESET. PLACED THE NR 1 GENERATOR ON THE OFF POSITION AND REDUCED ALL NON-ESSENTIAL ELECTRICAL EQUIPMENT. ACFT WAS RETURNED TO BASE WITH NO FURTHER INCIDENTS. ON INSPECTION, NOTICED A CONNECTING WIRE WAS LOOSE. MECHANIC TIGHTENED CONNECTOR AND GEN DISCON LIGHT NO LONGER ILLUMINATED.