Performed comprehensive annual electrical maintenance, including inspection of the equipment grounding system, conductor insulation, and electrical connections on appliances. Cleaned the breaker panel enclosure, lubricated locks, latch assembly, and hinges, and tested breakers, smoke alarms, GFCI outlets, and switches. Checked all outlets for loose connections and proper voltage, and verified the system for any code violations. All components were tested and confirmed to be in proper working condition.