Maintain and install distribution lines and circuits supplying distribution panels, switchgear, power and control circuits, fire alarm, UPS, lightning protection, and high-intensity discharge lighting systems; plan and execute troubleshooting/repair of high-voltage generating, controlling, and distribution systems. Install, modify, test, repair, and maintain transformers, converters, regulators, cables, switches, circuit breakers, and mechanical/electronic systems; adjust relays and control equipment for specified voltage, current, and time delay; construct and install rigid conduit; pull conductors and assemble bus bars.