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Posted by Pete C. on March 19, 2008, 12:37 pm
AZ Nomad wrote:
>
wrote:
> >On Wed, 19 Mar 2008 00:22:27 -0400, "Stormin Mormon"
>
> >>I've had the privilege of working on an outdoor circuit panel box. The BIG
> >>aluminum stranded wires come into a 200 amp breaker. I can't see any hint of
> >>oxidation protection on the wire.
> >>
> >>The building is about 100 feet from a lake, so it's humid. Should the big
> >>wire have some anti oxidant on it? Spray on laquer, or a blob of grey
> >>Noalox, or what? I will likely be at the building this Saturday, and
> >>concerned maybe I should put some oxidation protection on.
>
> >You really need to brush the wire before you put on the paste. Whether
> >it actually does anything is something that is still up in the air. A
> >properly torqued connection should be "gas tight". I have heard
> >convincing arguments both ways.
>
> aluminum doesn't rust. It's oxide protects it.
ALox is an electrical insulator. When AL electrical connections start to
oxidize the electrical contact area decreases leading to overheating and
sometimes total meltdown.
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