Answer Posted / a.ramaprasd

1. Economical. Aluminium is available in plenty. Current
flow is also less there fore conductor size is also less.

2. Considering economy we can use GI wire also , but it
will rust in due course , more rigid weighs more.

3. Cu 9 copper ) is better but it is expensive.Therefore
Alu minium is the best and wise choice.

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