The primary components of an overhead transmission line are:

• Conductors: These are the wires that carry the electrical current.

• Insulators: These devices support the conductors and prevent electricity from leaking to the tower or the ground.

• Support structures: These are the towers or poles that hold the conductors and insulators in place, maintaining a safe distance from the ground.

• Ground wire (or earth wire): This is a protective wire at the top of the tower that helps to absorb lightning strikes and safely divert them to the ground.

• Hardware and fittings: This includes various clamps, spacers, and dampers used to secure the conductors and mitigate vibration.