Re: ??Where to get a POLE Transformer??

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-uswest-dot-net>" <evp-at-pacbell-dot-net>

> over the years aluminum has gotten a bad wrap as far as electrical
> applications. This still
> continues even today. Besided being difficult to solder, difficult to keep
> a good pinch type
> connection, it also doesnt have the current carrying capacity as copper has
> for the same size
> of wire dia., it oxidizes faster and more aggresively than copper, it melts
> at alot lower temp
> than Cu, and its just plain cheap...  :)
> 
> Scot D

	For the same current carrying capacity an aluminum conductor is both
lighter and cheaper than a copper one, hence its extensive application
in HV power transmission lines.  The fact that making connections is
difficult doesn't mean anything other than that careful attention to
details is required.  For example, bet that every pulse-rated
high-current capacitor you will come across has aluminum "plates" in
it.  The foil is extended past the ends of the insulator and and then
soldered and welded to the leads.  

Ed