Why overhead transmission lines (wires on electric poles) are also given a certain amount of sag?
Difficulty: Easy
Overhead transmission lines are also given a certain amount of sag so that they can contract in winter without snapping.
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Why overhead transmission lines (wires on electric poles) are also given a certain amount of sag?
Overhead transmission lines are also given a certain amount of sag so that they can contract in winter without snapping.