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because of heat cables expand
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∙ 13y ago
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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 meant by pull back effect when pulling in electrical cables in conduit?
what is meant by pull back effect when pulling in electric cables in conduit
What system of high tension cables by which electrical power is distributed throughout region?
Power lines
Electrical equipment PAT?
Portable appliance testing (PAT) is basically a method of testing (using a device and by sight) that any electrical equipment, cables, devices, machinery is safe to use.
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?"
Give an example of thermal expansion?
Electrical cables that are strung from pole to pole are made of metal (usually aluminum or copper, in the U.S.). In hot weather, the cables get longer, which causes them to sag lower than they do in the winter. When the distance between poles is long, it can be pretty obvious.
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.
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
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.
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.
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)
How is electrical energy fed into the house?
By cables.
