A line of poles or towersSupport structures that have crossarms to hold the conductor... More carrying a high voltageAny voltage exceeding 1000 V a.c. or 1500 V d.c. More transmission circuitEach transmission line typically carries one or two transmis... More between two substations. Transmission lines normally consist of either three conductorsAlso known as wires or cables. The conductors are the wire... More (these make up a single electrical circuitEach transmission line typically carries one or two transmis... More) or six conductorsAlso known as wires or cables. The conductors are the wire... More (forming two circuits, or a double circuitEach transmission line typically carries one or two transmis... More).