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Sagging Power LinesIn the summer, power lines warm up with the weather. Since materials expand when they get warm, the power lines stretch out and sag. The opposite happens in the winter, as the power lines get colder, they contract. Also, in the summer the electrical load on the line is generally greater. This in turn causes increased temperature and can lead to the line sagging.
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Wiki User

13y ago
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Wiki User

13y ago

the power lines expand due to the hotter temps in winter they retract because it is colder

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Dinith Subasinha-21

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2y ago

Becuase its can

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Elvis Franecki

Lvl 1
2y ago
great answer, tyy

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Q: Why do telegraph wires sag more in summer than in winter?
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