Parts of an Electrical Power Line

Conductors

Wires that carry the electrical current, typically in three phases.

Insulators

Devices that prevent current from jumping to the ground or other structures.

Crossarms

Horizontal beams attached to the pole to support conductors

Utility Poles

Vertical structures that hold up the power lines.

Transformers

Devices that step down the voltage to safer levels for residential use.

Guys and Anchors

Components that provide stability to the poles and lines.

Lightning Arresters

Devices that protect the line from lightning strikes.

Fuses and Circuit Breakers

Protective devices that prevent the system from overloads and faults.

Switches

Devices that allow sections of the line to be isolated for maintenance.

Ground Wires

Wires that provide a path for electrical faults to safely reach the ground.