- #1
Monosandalus
- 1
- 0
Hi,
I have a question concerning the use of aluminium in power lines. I know that it's lighter than copper and thus cheaper, which is the main reason we prefer it above copper. But in fact alumunium has a lower conductivity than copper. Why is it then that one kg of aluminium can carry twice as much electricity as one kg of copper ? This seems to be contradictory to me.
Thank you :)
I have a question concerning the use of aluminium in power lines. I know that it's lighter than copper and thus cheaper, which is the main reason we prefer it above copper. But in fact alumunium has a lower conductivity than copper. Why is it then that one kg of aluminium can carry twice as much electricity as one kg of copper ? This seems to be contradictory to me.
Thank you :)