Installs, maintains, overhauls, modifies, and repairs electrical fixtures and equipment including power appliances, machinery, overhead circuits, fiber optics, underground conduit, motors, relays, switches, and control boxes; Reviews, plans, maintains, improves, and approves lighting equipment in County offices and buildings and detects, as well as corrects, causes of electrical system failures; Oversees and trains other personnel to detect and correct breakdowns in electrical equipment and performs field repairs and adjustments to electrical motors of up to 200 horsepower capacity, often in limited space and under adverse environmental conditions; Oversees and renovates or installs new service wiring for electronic communications and maintains inventory of critical parts and supplies; Operates special motorized equipment, installs lightning arrestor protection, installs wall outlets and connects motors, appliances, heating and cooling equipment, and transformers; Performs necessary systems testing; Interprets and ensures compliance with electrical codes and calculates line leads to determine wire and equipment size and capacity; May perform both low voltage and high voltage tasks; Performs installation, maintenance, modification, calibration, and repair of complex electrical power systems; Uses and maintains appropriate equipment, including hand, bench, and power tools during electrical repairs; Exercises lead responsibility over others on assigned projects; Performs other related job duties as assigned. Ability to work from oral or written instructions, broken parts, or basic diagrams and sketches; Ability to troubleshoot defects in machinery and equipment operation, make proper repairs and adjustments, and complete assignments; Ability to lead helpers and others to complete assignments, keep basic records, and perform heavy manual work; Ability to read and interpret blueprints and schematics, equipment diagrams, draw sketches of proposed projects, plan assignments, order materials, and understand and follow oral and written instructions; Ability to plan and execute facility maintenance or construction work plans; Ability to operate a personal computer and other automated systems to monitor work, enter, and retrieve information; Ability to interpret drawings and blueprints, prepare work specifications, and estimate material needs; Ability to install, alter, repair, and maintain a variety of electrical systems and equipment; Ability to endure long periods of standing, walking or working in inclement weather and possession of sufficient physical strength and agility to lift and move heavy objects; Ability to detect problems and repair machinery and equipment; Ability to communicate orally and in written form to impart information, write reports, etc.