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Why do overhead wires hang with a slight sag in the summertime but tightly in the wintertime?

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Wires lengthen with higher temperatures. In the summer the longer wires sag, while in the winter the shorter wires are more taut.

This is the reason railroad tracks are laid out with gaps between them to allow them to expand in the heat.

Posted on Oct 31, 2012

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Posted on Jan 02, 2017

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SOURCE: I have a 1993 honda

not true. the car needs to run at a certain temperature for it to run properly, not too cold, or not too hot. what the thermostat does, is it closes off the water circulation to your engine when it is cold. once your car reaches its normal operating temperature, which is a little less then halfway between the two lines in your temperature gage, it opens up allowing coolant to flow from your radiator to engine and back, and let the coolant cool the engine. if the thermostat is not there, during the winter time, especially in very cold climate, your car takes much longer to get to normal operating temperature, and causing it not to run as efficiently as it should for much longer, leading to more problems in the long run. i hope this helps, and dont remover your thermostat. if you are concerned about it, they only cost 15 dollars at autozone. goodluck.

Posted on Jun 06, 2011

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Why does the overhead wires hang with a slight hang in summertime but tightly in wintertime?


Wires lengthen with higher temperatures. In the summer the longer wires sag, while in the winter the shorter wires are more taut.

This is the reason railroad tracks are laid out with gaps between them to allow them to expand in the heat.

Oct 31, 2012 | Cars & Trucks

1 Answer

Why does the overhead wires hang with a slight hang in summertime but tightly in wintertime


Wires lengthen with higher temperatures. In the summer the longer wires sag, while in the winter the shorter wires are more taut.

This is the reason railroad tracks are laid out with gaps between them to allow them to expand in the heat.

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I have a 1993 honda accord se, the machanic told me if he took the thermastat out that it will not run hot in the summertime, because it will allow cool water to flow but in the wintertime i should put it...


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