Substation Electricians - Substation electricians install, modify, troubleshoot, repair and perform maintenance procedures on substation infrastructure and electrical apparatus. This includes security fences, grounding systems, gravel surfacing, buswork, transformers, battery banks, circuit breakers, disconnect switches and capacitor banks. Substation electricians must also be certified to perform switching and establishing safe work clearances.

System Protection Technicians - System protection technicians install, modify, maintain, troubleshoot, repair, calibrate, and perform functional tests on electrical systems protective relaying as well as interpret relay actions resulting from system disturbances and assessment of protective system performances. Protective systems include those designed to protect busses, disconnect switches, circuit breakers, transformers, regulators, capacitor banks and lines. Relaying systems include overcurrent, over and undervoltage, over and underfrequencey, differential, directional, distance, and pilot distance relaying. System protection technicians must also be certified to perform switching and establishing safe work clearances.