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because of heat cables expand

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15y ago

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When Ontario Hydro workers set up electrical cables during the summer they allow the cables to sag. Suggest a reason for this. In your answer refer to the particle theory?

i know someones going to be on this sooooooooo....... they sag because the hydro workers know, from the heat the cbles will sag during the summer, so they start the sag so they cant sag anymore


Why cables sag?

Cables are made out of metals which has the property of expanding on heat and contracting on cold due to elasticity hence they sag during summer


How do you remove electrical cables without damaging existing cables?

How do you remove electrical cables without damaging existing cables?"


What form of energy does electrical cables?

Electric cables carry electrical energy in the form of electricity.


Why are the main support cables of the suspension cables designed to sag?

They can't be designed not to. Large cables and ropes are extremely different to stretch straight, because of their high weight-to-length ratio.


Why. Are metals used for making electrical cables?

aluminium is used for making electrical cables as the metal do not melt easily


Why overhead electric cables sag on hot sunny days?

There's little choice. Conductors (not 'cables') sag, because of their weight. However, there's also a practical reason for deliberately allowing conductors to sag; if they were too 'tight', then they would not be able to contract during cold weather without pulling the poles over.


What is the purpose of a conductor shield in electrical cables?

The purpose of a conductor shield in electrical cables is to protect the conductor from electromagnetic interference and to prevent leakage of electrical signals.


What is a Continuity test on Electrical Cables?

Continuity of electrical cables must, because it is the process of inspection to found any discontinuity in the cable


What might happen if the electrical cables were installed tightly with no slack?

If you don't allow the conductors to sag then, when they contract in cooler weather, they could (a) snap, (b) break their insulators, (c) pull poles over, or (d) pull intermediate poles out of the ground.


What is a sag between two electrical tower?

The conductor strung between two towers is not as tight as a rod, but has some "sag". The conductor is bit loose between two towers. Generally the permissible sag is about 3% (In India)


Give you theory about electrical transmission without cables?

we can use the electromagnetic waves to transmit the electrical powers without the cables. But it is very difficult.