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became sag loosen

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Q: What happenes to telephone wires when they expand with heat?
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When will a telephone wire be longer summer or winter?

When metals (like the copper in the telephone wires) gets exposed to heat, they expand (thermal expansion) and when the get cooled they shrink. This directly implies that cables are longer in summer when it is hot. So telephone wires are longer in the summer.


Do wires expand?

Yes as though during the hot days the wires due to the hot heat that make it expand.


Why metal wires sag in summers?

They expand with heat.


Why do metallic wires sag in summer?

They expand with heat.


Why do telephone wires become loose and sag in winter?

They shouldn't, usually it is the other way around. As with all wire, the temperature effects wire lengths. When wires become warm as in a hot summer day the wires expand and droop and likewise when they become cold as in winter they contract and tighten up. The wires have to be installed to take this condition into consideration. There is a specific engineered sag allowed for each type of conductor from pole fix point to pole fix point.


Why does the electric wire become loose in summers?

The metal wires expand in the heat - making them sag.


What is the reason during the summer when they set up electrical cable they allow the cables to sag?

Due to the thermal expansion of the wiring materials, the wires expand in both width and length. This affects electrical transmission lines, telephone lines, and telegraph lines because of the large space between supporting poles. Example : Copper (Cu) Thermal Expansion= 17.6 μm/m/oC


Why in hot weather do railway tracks buckle telephone lies sag and car tire pressure rises?

Heat makes things expand (generally). Therefore railway tracks can buckle because they heat up, expand, and warp. Tire pressure rises because heat makes air expand, too, therefore raising the pressure inside the tire.


Do Mylar balloons expand in heat?

All balloons expand in heat.


Does a solid expand?

yes, the heat makes the particles move and in the heat they expand.


How do solids expand?

the heat expand the solids atoms


If you heat an object it will?

expand