- Services lines, substations, transformers, insulators, converters, regulators, cables, insulators, lightning arresters, switches, circuit breakers, fuses, ground connects, mechanical and electronic control systems, and other circuit elements found in substations and/or power-generating facilities, as well as the electrical portions of generators, located above ground and underground.
- Installs, modifies, and replaces generation and distribution equipment in substations, power- generating facilities, transformer vaults, and/or distribution centers. Installs wire or cable distribution lines from public utility supply point to Installation’s distribution substations.
- Maintains, replaces, tests and resets circuit breakers in switch and substations, at shore installations including pier mounted unit substations and vaults.
- Troubleshoots cable systems to locate shorts, opens, grounds, crosses, electrolysis damage, capacitance imbalance, or cable breaks, using such common electrical test devices as voltmeter, ohmmeter, and megger. Strings wires and hoists conductors up to the cross arms. Pulls wires to proper tension or sag, based on space, length, material, and size of conductors, prevailing temperature, and loading district. Installs and pulls cable underground from source of feed through ducts. Splices wires by removing insulation, scraping clean, twisting together and soldering, or connecting conductors with mechanical connectors, splicing claps and tape.
- Above ground, works on overhead platforms to string overhead wires and sets proper wire tension in accordance with strength and weight of wires. On underground lines, run wires or cable through tunnels on conduits or lays protected cable in trench.
- Installs, connects, and maintains transformers used as switching gear for control power, and potential and current transformers for metering devices. Installs transformers, capacitors, insulators, lightening arrestors, switch circuit breakers, fuses, meters, protective devices, and other equipment for main distribution lines over 600V.
- Troubleshoots distribution circuits and generating and controlling equipment to locate and correct the causes of outages and improper operation. Makes emergency cutouts and substitutions of power line.
- Checks condition of transformers, switches, and cable. Tests insulating oil of transformers and oil switches for breakdown and contamination. Checks transformer operating temperatures.
- Checks voltage at secondary terminals and makes repairs to defective, loose, or corroded connections. Operates tripping mechanism of primary circuit breakers and performs needed repair and replacement work.
- Performs other duties as assigned.
SKILL AND KNOWLEDGE
- Knowledge and skill in electrical principles, procedures, materials, and safety standards governing electrical systems over 600 volts.
- Knowledge and skill in commonly used high voltage electric power- generating and distribution equipment such as generators, transformers, switches, circuit breakers, recording instruments, and control systems.
- Skill to plan, carry-out, troubleshoot and repair, high voltage generating, controlling, and distribution systems, such as repairing switch gear, installing and hooking up transformers, locating defects in cables, or selecting materials to make installations or repairs.
- Skill to read and understand circuit diagrams of interconnects such as the generators, buses, switches, and circuit breakers in a power-generating facility or the feeders, substations, transformers, and interconnections of a distribution system to diagnose problems.
- Skill in the use of test equipment such as: oscillators, meggers, phase sticks, phase rotation meters, digital test equipment, and cable locating and fault finding equipment.
- Skill to diagnose and determine corrective action for electric power-controlling equipment such as switch gear, transformer banks, and circuit breakers in substations and power-generating facilities;
- Knowledge of the complete distribution system of the activity including normal routing, parallel feeders, possible interconnections, and capacity of lines and equipment;
- Knowledge of transformers, series and parallel circuits, line loading, line losses, and dielectric or conductive operating limitations of equipment, to calculate circuit values, determine when operating limitations of equipment are exceeded, or recognize excessive urrent flow or other signs of improper operation;
- Knowledge of the National Electric Safety Code and of types and sizes of wires/cables, conduits, transformers, and other electrical equipment and circuit elements, and the skill to integrate them into electrical systems and equipment worked on to ensure proper operation;
- Skill to read circuit diagrams and perform troubleshooting layout, and complete installation, modification, and repair on high voltage distribution systems such as repairing switchgear, installing transformers, and locating defects in cables.
- Skill to splice wires/cables by removing insulation, scraping clean, twisting together and soldering, or connecting conductors with mechanical connectors, splicing clamps, and tape. Skill to form and seal various types of cable joints such as straight, bridge, cap sleeve, vertical, disc, or knuckle joints.
- Knowledge of electronics troubleshoot and replace circuit boards in the controls of equipment such as electronic reclosers and other similar devices.
- Skill in the use of hot-line tools and protective equipment such as hot-sticks, wire tongs, wire tong supports, insulated tension links, tie sticks, insulated hoods/covers and tools, and rubber gloves, sleeves, and insulating blankets.
- Skill to install, maintain, and repair street and airfield lighting systems, and traffic signals and controllers.
Performs all assigned tasks independently according to instructions from the supervisor or high voltage electrical leader on work orders. Completes work with minimal on-site supervision.
Plans the sequence of work and determines the nature of maintenance or repairs needed. Is responsible for determining the effects that alterations will have on the total system and for ensuring that lines and equipment function properly. Reports to the supervisor all special occurrences such as emergency outages and corrective actions taken to maintain service. May also be responsible for providing technical assistance to lower wage grade crew members.
Works above ground from aerial bucket trucks and poles, at ground level, and in trenches, or manholes. The employee may perform moderately heavy lifting, pulling, and carrying of equipment and material weighing up 40 pounds and occasionally, may lift or pull heavy cables and equipment weighing more than 50 pounds with the help of weight handling equipment or with assistance from other workers. Uses block and tackle, pulleys, or other lifting devices.
Crouches, stands, kneels, and stoops while installing, repairing, or testing electrical equipment in confined spaces such as enclosed switch gear, or in structures such as overhead bus and conduit assemblies. Work requires bending, stooping, climbing, and standing for long periods while installing, repairing, and testing electrical equipment in manholes and on overhead distribution lines.
Works indoors and outdoors. May be exposed to danger from explosions of equipment and cables in manholes and vaults, as well as danger from high voltage electrical shock, burns from solder, broken bones, cuts, and bruises. May be exposed to heat and noise when working in substations or power-generating facilities, to extremes of weather when working outdoors, and to unpleasant odors and wet slippery surfaces when working in manholes. May be subject to electrical burns while working around high voltage electrical lines, broken bones from falls from poles, and strains from awkward work positions. May be exposed to chemicals such as insulation oil from transformers and oil switches. May be required to wear protective devices such as earplugs, safety hats, and nonconductive gloves and footwear.