Why is aluminum used instead of copper For Overhead cables?

Why is aluminium used instead of copper For Overhead cables?

Answer:

Overhead cables are made from aluminium and not copper because:

Aluminium is lighter than copper, which reduces the mass and sagging of the cables.

Aluminium is more malleable and ductile than copper, which makes it easier to form wires.

Aluminium is cheaper than copper, which lowers the cost of the cables.