A service electrician repairs electrical equipment and systems in residential and commercial settings. As a service electrician, you troubleshoot electrical problems and install new wiring or other components to fix lighting, fuse boxes, and generators. Your job duties include inspecting and testing electrical components to diagnose problems, repairing broken electrical components, and installing updates for outdated electrical systems. You may work independently or with a partner, and you typically drive a truck or van with tools and materials to each job site.