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The utility wires are tightened to the point that they allow for thermal expansion / contraction, and still say within the ability of the wire to carry a tensile load. Were the wires made "perfectly straight", there is no real material that could take the load, any real material would start sagging again as the temperature increased, and would break as the temperature dropped. Additionally, the supporting "poles" depend on the the two departing wires to cancel out in tension. Should one of them break, the supporting pole would have to be much more massive than it currently is to keep from breaking too.
Wiki User
∙ 15y ago
Wiki User
∙ 9y agoElectric wires are usually made up of aluminum wires ,due to their metallic properties these wires get contracted in winters so to prevent their breakage they are stung loosely.
Wires will always sag however much tension there is. An inch of wire in the middle of a perfectly horizontal long wire has no component of force supporting its weight, so it will drop and the wire has to sag. Power lines are tensioned as much as possible for safety, leaving some sag.
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What will happen to the telephone lines if they are fitted tightly from pole to pole?
When a pole shifts with the earth it will pull the wires apart and cause a break somewhere in the line. The poles are meant to suspend the wires in air, not to stretch them... Accurate answer is the lines will break. While breaking is not normally due to poles shifting, that could happen. The reason the wires are slung loosely is because of the expansion and contraction properties of the metal wires. If you look at the lines in the winter, they do not sag much (are tighter) and in the summer the sag is pronounced (looser). If they were strung tightly, they would eventually break during the cold weather.
Do electrical wires affect the voltage?
electrical wires are selected to satisfy with the desired conditions and supply.
What are connecting wires?
Connecting wires in electrical terms is called an electrical splice. All electrical splices have to be made in a junction box.
Why can transition metals be used to make electrical wires?
Their high conductivity is why transition metals are used to make electrical wires.
What is electrical raceways?
an exposed conduit used for carrying electrical wires/cables
What would you use pliers for?
You use pliers as a handy single handed way of holding small objects tightly, or for twisting 2 wires as in an electrical connection.
Can you splice wires in an electrical panel?
yes wires is electrical panel
What does taut mean?
It means the quality of being tightly strung, either literally or figuratively.
What will happen to the telephone lines if they are fitted tightly from pole to pole?
When a pole shifts with the earth it will pull the wires apart and cause a break somewhere in the line. The poles are meant to suspend the wires in air, not to stretch them... Accurate answer is the lines will break. While breaking is not normally due to poles shifting, that could happen. The reason the wires are slung loosely is because of the expansion and contraction properties of the metal wires. If you look at the lines in the winter, they do not sag much (are tighter) and in the summer the sag is pronounced (looser). If they were strung tightly, they would eventually break during the cold weather.
What is the use of electrical?
To strip electrical wires and to twist mutliple wires together.
The bow that string players usually use to produce sound on their instruments is slightly curved stick strung tightly with?
Horsehair
The bow that string players usually use to produce sound on their instruments is a slightly curved stick strung tightly with?
Horsehair
Compared to thin wires electrical resistance in thick wires are?
The electrical resistance in thick wires is less than thin.
An abacus which is a type of simple counting device contains beads strung on wires.?
That is true.
Do electrical wires affect the voltage?
electrical wires are selected to satisfy with the desired conditions and supply.
What are connecting wires?
Connecting wires in electrical terms is called an electrical splice. All electrical splices have to be made in a junction box.
How does electrical energy travel?
Through electrical wires.
