What was found
SHORTLY AFTER TAKEOFF, LEFT GENERATOR OFF, DC BUS OFF, LEFT AC BUS OFF, AND AC CROSSTIE LOCKOUT LIGHTS ILLUMINATED. INITIATED COCKPIT OPERATING MANUAL PROCEDURES AND TRIED RESTORING GENERATOR BACK ON LINE WITH NO SUCCESS. FLIGHT RETURNED TO YEG AND LANDED WITHOUT INCIDENT. REPAIRED BROKEN WIRE TO FIELD CONNECTOR. OPERATIONAL CHECK OK, AIRCRAFT RETURNED TO SERVICE.