What term describes the overhead wire system that includes the contact wire, feeder wires, messenger wires, and hanger to power LRVs via a pantograph?

• A. Overhead Contact System (OCS)
• B. Catenary
• C. Pantograph System
• D. Traction Network

Answer: (B)

The main idea is the overhead wire system that powers LRVs through a pantograph. This system consists of the contact wire that the pantograph rides on, plus feeder wires to supply current, messenger wires to keep the line taut, and hangers to support the assembly. Collectively, this overhead wire network is known as the catenary. The pantograph taps power from the contact wire, while the feeder and messenger wires and hangers maintain electrical continuity and the correct geometry along the route. While some sources use Overhead Contact System as a general term, the description given matches the catenary—the suspended overhead wire system. The other terms refer to either the train’s pickup device or to a broader or different concept.