Dead-end tower

A dead-end tower (also anchor tower, anchor pylon) is a fully self-supporting structure used in construction of overhead transmission lines. A dead-end tower uses horizontal strain insulators and where the conductors mechanically terminate. Dead-end towers may be used at a substation as a transition to a "slack span" entering the equipment, when the circuit changes to a buried cable, when a transmission line changes direction by more than a few degrees, or just once in a while to limit the extent of a catastrophic collapse.