Diagnose malfunctioning systems, apparatus, or components, using test equipment and hand tools to locate the cause of a breakdown andcorrect the problem.
Prepare sketches or follow blueprints to determine the location of wiring or equipment and to ensure conformance to building andsafety codes.
Test electrical systems or continuity of circuits in electrical wiring, equipment, or fixtures, using testing devices, such as ohmmeters, voltmeters, or oscilloscopes, to ensure compatibility andsafety of system.
