Installs alters, maintains, and repairs electrical wiring systems and equipment, both high and low voltage (i.e., wall electrical outlets, traffic signals systems, air distribution systems, pumps, transformers, motors, streetlights, and appliances); Maintains and repairs equipment used in 24-hour operations; Installs traffic signal control systems and devices; Installs and maintains motors of several hundred horsepower, coils, transformers, and control equipment of up to 12,000 volts; Documents information on preventive maintenance file on electrical equipment and machinery and monitors a preventive maintenance program; Installs and maintains water pump and booster stations consisting of various horsepower, from functional to several hundred horsepower; Installs and maintains transformers, substations, and related control equipment (motors, generators, pumps); Installs, maintains, and repairs series and multiple lighting systems on streets and at the airport, ballpark diamonds, wastewater, and water treatment facilities, and Civic Plaza Convention. GED Applicants shall furnish a copy of their test scores and certificate; 3. Subjects: Completion of a minimum of one year of high school algebra with a grade of C or better or one post high school algebra course (equivalent to one year high school algebra) with a grade of C or better, is required.