Skill in using hand and power tools, instruments, test equipment and electrical meters to include special tools such as hydraulic knock-out tools, hammers, drills, valve spring compressors, micrometers, oscillators, phase sticks and rotation meters, digital test equipment, fault finding equipment, ammeters, voltmeters, meggers, graphic recorders, dressing tools, wire torrgs, wire tong supports, insulated tension links, tie sticks, and insulated hoods/covers and tools; and installing, operating, inspecting, maintaining, repairing, and modifying generators, automatic transfer switches, and uninterruptible power systems. Knowledge of technical practices in order to plan, layout, and complete maintenance or repair work needed for high voltage equipment and lines; and of high voltage electrical equipment and distribution lines such as transformers, switches, circuit breakers, recording instruments, control systems, series and parallel, circuits, line loading, line losses.