Why is aluminium used instead of copper for overhead cables?

Why is aluminium used instead of copper for overhead cables?
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6 Answers

Answer :

Light weight. Can able to laying for a long distance. Cost effective and obviously good conductivity with respect to conductor diameter...
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because its lightness and malleability
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Answer :

Very lighter in weight. Easily to bend and very cheap. Compare with copper very expensive and healthy in time of weight but is the best
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Lesser weight, good conducting properties, retain its original after atmospheric changes
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Because in transmission lines we have High voltage and low current so for high voltage Aluminium is good and cheap in cost fue to copper thats why they use aluminum conductor
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Because copper reacts with atmosphere variation and it's cost High as compared to aluminium and aluminium is good property and less cost so aluminium is used
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