Make tools, fittings, and small metal pieces used in other products.
Tests electric power lines and auxiliary equipment to compile data concerning circuit conditions affecting efficiency of electric service and accuracy of current-consumption meters, using test instruments: Climbs poles or descends into underground vaults to gain access to power line equipment. Connects voltmeters, ammeters, and recording-demand meters to energized circuitry, transformers, and electrical accessories, using insulated pole fitted with grasping device. Records registration of direct-reading instruments. Periodically returns to change charts of recording meters. Tests building circuitry and such current-consuming apparatus as x-ray machines and motors to collect data regarding actual voltage requirements and fluctuations. Submits meter readings and charts to supervisory personnel. Inspects wiring, switchgear, and current-control apparatus for mechanical defects. May adjust voltage regulators.