An
overhead line or
overhead wire is used to transmit
electrical energy to
trams,
trolleybuses or
trains. It is known variously as:
- Overhead contact system (OCS)
- Overhead line equipment (OLE or OHLE)
- Overhead equipment (OHE)
- Overhead wiring (OHW) or overhead lines (OHL)
- Catenary
- Trolley wire