Re: [CAD_CAM_EDM_DRO] Re: Drive mfrs recommendations for MOTOR cables ?

keongsan wrote:

> --- In CAD_CAM_EDM_DRO@y..., Jon Elson <elson@p...> wrote:
>
> > Why would you use aluminum wire? It was used in the US during a
> > copper mine strike, and a lot of houses burned down. It is still
> used
> > in power line entry cables, with special connector hardware. If you
> > don't use the correct connectors, you will have unreliable
> connections.
> > Of course, you can't solder it.
>
> Does this mean that Al wires are not commonly found now? I am no
> EE/chemist, so when I see cables that are whitish in color instead of
> brown, I assume they are Al, and I seem to come across them quick
> frequently? Plus I have managed to solder them so connectors, etc so
> far?

No, fine stranded Aluminum wire is almost nonexistant. During the early
1960s, there was a copper shortage that lasted 4 years or more. During that
time, home electrical wiring was made from solid Aluminum. I have never
seen stranded aluminum wire in sizes like #20 through #6. There is aluminum
service entry cable that is made stranded, but it is big stuff.

What you call aluminum is really TINNED COPPER! No problem with this
stuff, it solders well unless badly corroded, remains quite flexible, and does
not cold flow, so standard screw and crimp connectors can be used
safely. Next time you are working with some, nick the silver coating
with a sharp knife, or just look at the cut end, if heavy gauge. the copper
underneath the tinning will be obvious.

Jon