# Electrical Power-Line Installers and Repairers > Install or repair cables or wires used in electrical power or distribution systems. May erect poles and light or heavy duty transmission towers. - Code: 49-9051.00 (O*NET-SOC; SOC 2018 49-9051) - Family: [Installation, Maintenance & Repair](https://foundation.org.ai/occupations#family-49), one of its 52 occupations - Tasks: 23 tasks (22 core and 1 supplemental) - Page: https://foundation.org.ai/occupations/49-9051.00 - JSON: https://foundation.org.ai/data/tasks/49-9051.00.json ## What the work is made of 1. Adhere to safety practices and procedures, such as checking equipment regularly and erecting barriers around work areas. Core task · Task 8412 · Rated by 71 people who do the job, August 2021 2. Drive vehicles equipped with tools and materials to job sites. Core task · Task 8418 · Rated by 71 people who do the job, August 2021 3. Open switches or attach grounding devices to remove electrical hazards from disturbed or fallen lines or to facilitate repairs. Core task · Task 8413 · Rated by 71 people who do the job, August 2021 4. Climb poles or use truck-mounted buckets to access equipment. Core task · Task 8414 · Rated by 69 people who do the job, August 2021 5. Install, maintain, and repair electrical distribution and transmission systems, including conduits, cables, wires, and related equipment, such as transformers, circuit breakers, and switches. Core task · Task 8416 · Rated by 69 people who do the job, August 2021 6. Inspect and test power lines and auxiliary equipment to locate and identify problems, using reading and testing instruments. Core task · Task 8420 · Rated by 71 people who do the job, August 2021 7. Coordinate work assignment preparation and completion with other workers. Core task · Task 8419 · Rated by 71 people who do the job, August 2021 8. Replace or straighten damaged poles. Core task · Task 8423 · Rated by 69 people who do the job, August 2021 9. String wire conductors and cables between poles, towers, trenches, pylons, and buildings, setting lines in place and using winches to adjust tension. Core task · Task 8421 · Rated by 70 people who do the job, August 2021 10. Attach cross-arms, insulators, and auxiliary equipment to poles prior to installing them. Core task · Task 8425 · Rated by 69 people who do the job, August 2021 11. Dig holes, using augers, and set poles, using cranes and power equipment. Core task · Task 8427 · Rated by 69 people who do the job, August 2021 12. Travel in trucks, helicopters, and airplanes to inspect lines for freedom from obstruction and adequacy of insulation. Core task · Task 8426 · Rated by 71 people who do the job, August 2021 13. Identify defective sectionalizing devices, circuit breakers, fuses, voltage regulators, transformers, switches, relays, or wiring, using wiring diagrams and electrical-testing instruments. Core task · Task 8417 · Rated by 71 people who do the job, August 2021 14. Install watt-hour meters and connect service drops between power lines and consumers' facilities. Core task · Task 8424 · Rated by 69 people who do the job, August 2021 15. Test conductors, according to electrical diagrams and specifications, to identify corresponding conductors and to prevent incorrect connections. Core task · Task 8422 · Rated by 69 people who do the job, August 2021 16. Place insulating or fireproofing materials over conductors and joints. Core task · Task 8415 · Rated by 69 people who do the job, August 2021 17. Splice or solder cables together or to overhead transmission lines, customer service lines, or street light lines, using hand tools, epoxies, or specialized equipment. Core task · Task 8429 · Rated by 69 people who do the job, August 2021 18. Trim trees that could be hazardous to the functioning of cables or wires. Core task · Task 8428 · Rated by 69 people who do the job, August 2021 19. Pull up cable by hand from large reels mounted on trucks. Core task · Task 8432 · Rated by 69 people who do the job, August 2021 20. Lay underground cable directly in trenches, or string it through conduit running through the trenches. Core task · Task 8433 · Rated by 69 people who do the job, August 2021 21. Cut trenches for laying underground cables, using trenchers and cable plows. Core task · Task 8434 · Rated by 71 people who do the job, August 2021 22. Cut and peel lead sheathing and insulation from defective or newly installed cables and conduits prior to splicing. Core task · Task 8430 · Rated by 69 people who do the job, August 2021 23. Clean, tin, and splice corresponding conductors by twisting ends together or by joining ends with metal clamps and soldering connections. Supplemental task · Task 8431 · Rated by 69 people who do the job, August 2021 ## More in Installation, Maintenance & Repair - [Aircraft Mechanics and Service Technicians](https://foundation.org.ai/occupations/49-3011.00): 38 tasks - [Audiovisual Equipment Installers and Repairers](https://foundation.org.ai/occupations/49-2097.00): 11 tasks - [Automotive Body and Related Repairers](https://foundation.org.ai/occupations/49-3021.00): 25 tasks - [Automotive Glass Installers and Repairers](https://foundation.org.ai/occupations/49-3022.00): 18 tasks - [Automotive Service Technicians and Mechanics](https://foundation.org.ai/occupations/49-3023.00): 30 tasks - [Avionics Technicians](https://foundation.org.ai/occupations/49-2091.00): 13 tasks - [Bicycle Repairers](https://foundation.org.ai/occupations/49-3091.00): 14 tasks - [Bus and Truck Mechanics and Diesel Engine Specialists](https://foundation.org.ai/occupations/49-3031.00): 26 tasks - [Camera and Photographic Equipment Repairers](https://foundation.org.ai/occupations/49-9061.00): 15 tasks - 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