> Although I don't know this for
> sure, I suspect this is why the electric utilities use high
> voltage to transport electricity; in order to reduce the size of
> the cable required; if their transmission lines were 120v, the
> required cable gauge would be obseen!) :-)
Yep, that is exactly why. And, therefore, that is why we use AC
instead of DC: so that we can use transformers to step it up to
transmit over large distances, and then step down to a safe
and usable level at the household.
This archive was generated by hypermail 2b29 : Wed Oct 01 2008 - 00:13:23 EDT