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Electrical and Electronics Repairers, Powerhouse, Substation, and Relay

Inspect, test, repair, or maintain electrical equipment in generating stations, substations, and in-service relays.

How does this connect to your interests? →

A look at the work

  • Inspect and test equipment and circuits to identify malfunctions or defects, using wiring diagrams and testing devices such as ohmmeters, voltmeters, or ammeters.
  • Prepare and maintain records detailing tests, repairs, and maintenance.
  • Consult manuals, schematics, wiring diagrams, and engineering personnel to troubleshoot and solve equipment problems and to determine optimum equipment functioning.
  • Analyze test data to diagnose malfunctions, to determine performance characteristics of systems, or to evaluate effects of system modifications.
  • Open and close switches to isolate defective relays, performing adjustments or repairs.
  • Notify facility personnel of equipment shutdowns.
  • Repair, replace, and clean equipment and components such as circuit breakers, brushes, and commutators.
  • Run signal quality and connectivity tests for individual cables, and record results.

A selection of source-listed tasks; duties vary by role and employer.

Interests involved in this work

These source scores describe occupational work activities. They are separate from your personal test results.

Hands-on

2026-02 · Machine Learning/Expert

7.0 / 7

Investigative

2026-02 · Machine Learning/Expert

3.5 / 7

Creative

2026-02 · Machine Learning/Expert

1.0 / 7

Helping people

2026-02 · Machine Learning/Expert

1.1 / 7

Enterprising

2026-02 · Machine Learning/Expert

1.3 / 7

Organizing

2026-02 · Machine Learning/Expert

5.3 / 7

Skills to explore

Source-reported importance on a 1–5 scale. Try a course, project or conversation to learn what these skills involve.

Critical Thinking

Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions, or approaches to problems.

2017-07

3.8 / 5

Equipment Maintenance

Performing routine maintenance on equipment and determining when and what kind of maintenance is needed.

2017-07

3.6 / 5

Repairing

Repairing machines or systems using the needed tools.

2017-07

3.6 / 5

Troubleshooting

Determining causes of operating errors and deciding what to do about it.

2017-07

3.5 / 5

Reading Comprehension

Understanding written sentences and paragraphs in work-related documents.

2017-07

3.4 / 5

Operations Monitoring

Watching gauges, dials, or other indicators to make sure a machine is working properly.

2017-07

3.3 / 5

Quality Control Analysis

Conducting tests and inspections of products, services, or processes to evaluate quality or performance.

2017-07

3.3 / 5

Active Listening

Giving full attention to what other people are saying, taking time to understand the points being made, asking questions as appropriate, and not interrupting at inappropriate times.

2017-07

3.1 / 5

Complex Problem Solving

Identifying complex problems and reviewing related information to develop and evaluate options and implement solutions.

2017-07

3.1 / 5

Speaking

Talking to others to convey information effectively.

2017-07

3.1 / 5

Plan a small next step

Talk to someone doing this work, look for a supervised activity, and explore the subjects that interest you. Admission, licensing and current program requirements should be confirmed with the relevant institutions.

Source preparation category: Job Zone 3 of 5 · 2017-07. This category describes typical preparation, not your eligibility.

Related study fields

Source crosswalk connections are research leads, not required qualifications.

Electrical, Electronic, and Communications Engineering Technology/Technician →

Power Plant Technology/Technician →

Electrical and Power Transmission Installation/Installer, General →

Electrical/Electronics Maintenance and Repair Technologies/Technicians, Other →

Explore all related study fields →

Source & methodology

O*NET-SOC code 49-2095.00 · Database 31.0 · Retrieved Oct 14, 2026. Dates on individual observations describe their source periods.

How interest exploration matching works →

Data: O*NET® 31.0 Database, U.S. Department of Labor, Employment and Training Administration. Used under CC BY 4.0. StudyIndex normalizes the presentation and adds exploration features; USDOL/ETA has not approved, endorsed or tested these additions.