Install, inspect, test, maintain, or repair electric gate crossings, signals, signal equipment, track switches, section lines, or intercommunications systems within a railroad system.
Install, service, or repair heating and air conditioning systems in residences or commercial establishments.
Install and repair industrial and commercial refrigerating systems.
Install, dismantle, or move machinery and heavy equipment according to layout plans, blueprints, or other drawings.
Repair, install or maintain mobile or stationary radio transmitting, broadcasting, and receiving equipment, and two-way radio communications systems used in cellular telecommunications, mobile broadband, ship-to-shore, aircraft-to-ground communications, and radio equipment in service and emergency vehicles. May test and analyze network coverage.
Install, set-up, rearrange, or remove switching, distribution, routing, and dialing equipment used in central offices or headends. Service or repair telephone, cable television, Internet, and other communications equipment on customers’ property. May install communications equipment or communications wiring in buildings.
Repair, test, adjust, or install electronic equipment, such as industrial controls, transmitters, and antennas.
Install or repair solar energy systems designed to collect, store, and circulate solar-heated water for residential, commercial or industrial use.
Install, maintain, and repair electrical wiring, equipment, and fixtures. Ensure that work is in accordance with relevant codes. May install or service street lights, intercom systems, or electrical control systems.
Assemble, install, or maintain solar photovoltaic (PV) systems on roofs or other structures in compliance with site assessment and schematics. May include measuring, cutting, assembling, and bolting structural framing and solar modules. May perform minor electrical work such as current checks.