According to people in this career, the main tasks are...
| Task | Importance |
|---|---|
| Inspect and test equipment and circuits to identify malfunctions or defects, using wiring diagrams and testing devices such as ohmmeters, voltmeters, or ammeters. | 90% |
| Prepare and maintain records detailing tests, repairs, and maintenance. | 88% |
| Consult manuals, schematics, wiring diagrams, and engineering personnel to troubleshoot and solve equipment problems and to determine optimum equipment functioning. | 87% |
| Analyze test data to diagnose malfunctions, to determine performance characteristics of systems, or to evaluate effects of system modifications. | 84% |
| Open and close switches to isolate defective relays, performing adjustments or repairs. | 84% |
| Notify facility personnel of equipment shutdowns. | 84% |
| Construct, test, maintain, and repair substation relay and control systems. | 82% |
| Test insulators and bushings of equipment by inducing voltage across insulation, testing current, and calculating insulation loss. | 80% |
| Repair, replace, and clean equipment and components such as circuit breakers, brushes, and commutators. | 80% |
| Schedule and supervise the construction and testing of special devices and the implementation of unique monitoring or control systems. | 78% |
| Schedule and supervise splicing or termination of cables in color-code order. | 78% |
| Test oil in circuit breakers and transformers for dielectric strength, refilling oil periodically. | 77% |
| Run signal quality and connectivity tests for individual cables, and record results. | 75% |
| Disconnect voltage regulators, bolts, and screws, and connect replacement regulators to high-voltage lines. | 74% |
| Maintain inventories of spare parts for all equipment, requisitioning parts as necessary. | 69% |
| Set forms and pour concrete footings for installation of heavy equipment. | 48% |
