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Black copper still ok to use?

 
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asparknz




Joined: 08 Jun 2014
Posts: 5



PostLink    Posted: Mon Apr 12, 2021 10:57 pm    Post subject: Black copper still ok to use? Reply with quote


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Hi all

I have a plug I’m replacing which has heat damage from a loose connection. The cable itself is mostly fine however the copper wire on the load is black from the heat, like oxidised copper.

Is it still ok to use like this?



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kal
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Joined: 12 Dec 2010
Posts: 11116
Location: Ottawa, Canada

Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter


PostLink    Posted: Mon Apr 12, 2021 11:05 pm    Post subject: Reply with quote

No. Cut it back and get clean copper strands. The discoloration / oxidation adds a layer of insulation. You don't want that.

Kal

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