Knowledge of materials, tools and equipment (e.g., cable reels conduit benders, stripping tools, voltage or current meters, wire or cable cutters) used in the installation, maintenance and repair of electrical systems and components (e.g., wiring, switches, lighting, transformers, high voltage, switchboard, motor control centers) to accomplish work assignments. Knowledge of construction process and methods used in the fabrication, maintenance and repair of structures (e.g., cabinets, wood and steel framing, concrete work, roofing) and fixtures to accomplish work assignments and to provide direction / information and training.