This picture shows a 400 kV transmission line.
|Bundle of two conductors (some lines have 4).|
|Spacer to hold the two conductors apart.|
|Earth wire at top of tower or pylon.|
|The three bundles on one side of the tower make up one electrical circuit. Most lines have two circuits, one each side.|
|Identity plate saying which line it is and who owns it. Also usually has a safety warning notice about the dangers of electrocution.|
|Anti-climbing device - barbed wire to stop unauthorised climbing|