Performs and/or assists in the installation, maintenance, or repair of industrial electrical systems rated at 480 volts or higher in County facilities; Maintains, troubleshoots, repairs, and installs 480vac motors, submersible pumps, complex motor controls, and pump controls in an industrial setting; Maintains power, lighting, control systems, and processes alarm wiring systems in overhead cable trays, underground duct banks, vaults, and manholes; Maintains electrical equipment in OSHA-classified spaces (explosive hazardous rated locations); Troubleshoots industrial control systems, AC/DC variable speed motors, variable frequency drives (VFD), and soft starters; Recommends electrical system requirements for facilities and conducts technical inspections on new installations of electrical systems, modifications of existing equipment, motors, and related electrically-operated apparatus; Determines routing, location, and method of installing industrial wiring, conduits, equipment, fixtures, and accessories from complex industrial drawings, wiring diagrams, blueprints, specifications, and sketches; Operates and maintains medium voltage (15kV) substations including protective relays and controls; Tests, calibrates, and programs breaker trip settings and functions; Performs scheduled inspections and reviews of electrical panels, performs proper preventative maintenance on all associated electrical equipment, and upgrades electrical equipment; Identifies and documents all electrical enclosures and electrical equipment within facilities and maintains accurate labeling in all panels, motor control centers (MCCs), junction boxes, and switch gear; Follows proper safety protocols on electrical equipment; Prepares work schedules and coordinates maintenance schedules with integrated teams; Prepares technical reports of electrical operational issues; Performs calculations involved in the operation of sizing electrical circuits, transformers, uninterruptable power supply (UPS) units, panels, breakers, starters, box and conduit fill and wire sizes; May oversee and consult with outside electrical and construction contractors to assure compliance with National Electrical Codes and Regulations (NEC) and Pima County specifications, rules, policies, and regulations; Responds to electrical emergencies. Action Activity - bending, climbing, kneeling, reaching, squatting, and stooping; Motion Activity - simple and firm grasping and fine movement; Hearing Activity - in noisy areas, on a radio, behind themselves, equipment alarms; Speaking Activity - in person, on the phone, and on a radio; Vision - may be required to operate a motor vehicle, operate machinery, operate a forklift/power industrial equipment; distinguish colors, have depth perception, have peripheral vision.