I have an electrical supply store and you'd be suprised how many people come in
asking for aluminum electrical enclosures because they "don't rust". All my
enclosures are steel and all my lugs and connectors are copper or tinned copper.
Aluminum is one of the poorest materials to make anything that you expect to
last a while. When it oxidizes, it just turnes to powder. It CAN be
treated(anodized) to be fairly durable, but it starts out as powder and it
eventually ends up as powder .
Dr. Pat
Ohm347@aol.com wrote:
> In a message dated 03/10/2000 9:39:25 PM Pacific Standard Time,
> fdedip@whale-mail.com writes:
>
> << No.
> Flip >>
> i've seen aluminum grow a white coating over it in patches. it was some sort
> of oxidization which is what rust is(joining of oxygen to metal i've been
> told). may have just been the quality of the aluminum. when i am working
> with aluminum conductors (i'm an industrial electrician) we coat the exposed
> aluminum with a product called noalox. it stops the production of the
> aforementioned white coating which has a high resistance and can cause
> aluminum electrical connections to catch fire.
> hope this helps.
> derek
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