Installs, repairs or replaces, modifies, loads, and tests new and existing electrical lines, circuits,systems, fixtures,panels, switches, breakers, and controls located in and near installation buildings and structures associated with test cell facilities in direct support of National Defense programs and equipment. Knowledge of electrical and electronic theory and instruments used in shop and trade practices, and of electrical equipment, i.e., test lamps, multimeters, circuit analyzers, circuit breaker testers, voltage recording meters, meggers, wattmeters, ohmeters, and ammeters.