Electronics > Beginners
Corrosion on heavy gauge wire
fixit7:
I was using this to go to a 2 plug outlet.
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The corrosion bugs me even though the resistance is 1.0-1.6 ohms.
I have flux on order for my electronics (NT ZJ-18 150g Yellow paste Advance Quality Solder Flux Soldering Paste High Intensity Free Rosin)
Would that help in this case?
I had to return a whole role of automotive wire that was black throughout the entire 11 feet of wire.
Does copper wire have a short life?
Brumby:
Generally, copper wire should last for quite a long time. I've had stuff sitting in my garage for 10 years or more and I only need to nip off 1 centimetre (if that) to be greeted with pristine shiny copper on the outside of the strands.
What WILL cause problems is when it is being kept in an environment that is less than ideal. This can include - but is not limited to - high moisture conditions and rubbish insulation. Severe age can be a contributing factor, but for the whole 11 feet to be black would concern me.
The fact that the resistance is low indicates it will still perform as a conductor, but termination would be a concern - because even if you did clean it up, I wouldn't feel comfortable unless I checked the connection a few times over a period of time.
Truth is, though, if it looked like that, I wouldn't want to use it.
I'm sure there will be others who can offer more opinions and experiences.....
Brumby:
Temperature! Yes, of course, temperatures - but usually towards the upper end or outside the "habitable zone". :D
fixit7:
--- Quote from: Brumby on July 01, 2019, 03:14:59 am ---Generally, copper wire should last for quite a long time. I've had stuff sitting in my garage for 10 years or more and I only need to nip off 1 centimetre (if that) to be greeted with pristine shiny copper on the outside of the strands.
What WILL cause problems is when it is being kept in an environment that is less than ideal. This can include - but is not limited to - high moisture conditions and rubbish insulation. Severe age can be a contributing factor, but for the whole 11 feet to be black would concern me.
The fact that the resistance is low indicates it will still perform as a conductor, but termination would be a concern - because even if you did clean it up, I wouldn't feel comfortable unless I checked the connection a few times over a period of time.
Truth is, though, if it looked like that, I wouldn't want to use it.
I'm sure there will be others who can offer more opinions and experiences.....
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I remembered that I had some HCl. I made about a 15% solution and soaked the ends of the stripped wires in it for a minute.
I thoroughly washed it and then sprayed it with a strong solution of sodium bicarbonate to neutralized the acid.
I used a strip of ph paper to verify that the ph was at or below 7.0.
The treatment restored the copper color throughout, though it is not shiny.
I expected that.
Andy
Ian.M:
... and now you probably have traces of salt and acid up under the insulation that wicked up there when you immersed the end. Odds are, its going to die within a year or two.
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