Substation technicians install wiring systems and control panels, as well as perform routine maintenance and emergency repairs on electrical substations that send energy into nearby homes and buildings. In this role, you may collaborate with architects and engineers to develop the layout and plan of the substation. Once the blueprints are completed, you may work on the construction and installation of wiring cabinets and electrical equipment; test, calibrate, and maintain relays and operating devices; and troubleshoot and repair transformers and other equipment. You may also be responsible for building safety perimeters, such as fencing, around the substation, and monitoring safety issues that may arise with circuits and other connection lines.