Why the wiresof towers lenghten in warmer weather?

Wires of towers, such as those used in transmission lines, lengthen in warmer weather due to thermal expansion. As temperatures rise, the metal in the wires heats up and its molecules move more vigorously, causing the material to expand. This phenomenon results in the wires becoming longer and can lead to sagging if not properly accounted for in design and installation. Engineers take this expansion into consideration to ensure safety and functionality in varying temperatures.