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       CODE: 820.261-018 Buy the DOT:Download/CD-ROM
TITLE(s): ELECTRICIAN, SUBSTATION (utilities)
Inspects, tests, and maintains substation electrical equipment, such as oil circuit breakers and
transformers: Inspects and tests equipment to detect malfunctioning and determine resistance and
load, using voltmeter and ammeter. Tests insulators and bushings of equipment for power leakage by
imposing specified voltage on insulation through testing apparatus and calculating insulation loss.
Tests oil in circuit breakers and transformers for dielectric strength [TRANSFORMER TESTER
(utilities)]. Repairs or rebuilds oil circuit breakers, transformers, and lightning arrestors by
replacing worn parts. Disconnects voltage regulators for removal by other workers by loosening bolts
and screws and connects replacement regulator to high-voltage line. Periodically replenishes oil in
circuit breakers and transformers not needing repair. Inspects switches before repairing or
replacing equipment to ensure power cutoffs. Does not repair electrical machinery, such as
generators and converters [ELECTRICIAN, POWERHOUSE (utilities)]. May set forms and pour concrete
footings for heavy equipment installation. May paint, repair, and maintain substation buildings.
GOE: 05.05.05 STRENGTH: M GED: R4 M4 L3 SVP: 8 DLU: 77
ONET CROSSWALK: 85721 Powerhouse, Substation, and Relay Electricians
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