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Old 23 January 2006, 13:59   #11
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Quote:
Originally Posted by Hightower
I mean you can tin the end ...
True. However, tinning the end of the stripped wire is meant to facilitate soldering. It is not a "marinization" of the cable.

Copper, if exposed to sea water, will rapidly corrode, causing the strands to become brittle. This is noticeable, and somewhat problematic, where the wire is stripped, but is actually more of a problem within the insulation, where you would normally assume there to be no problem. The water wicks up the stranded conductors, and corrodes the strands further up the cable.

Marinized tinned wire has each strand of the wire clad with tin (or a tin/lead alloy; i.e. solder) in order to protect the copper from any water intrusion. This does not mean that you can or should do away without further protection (adhesive lined shrink tubing, dielectric grease, etc.) but rather that the onset of conductor corrosion problems will be somewhat delayed.

jky
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Old 24 January 2006, 16:08   #12
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Well said jky. I wouldn't ever use untinned cable on any boat I own, now that I've seen what happens to standard copper cable after just a few years. Even in the relatively dry engine bay of a large motor boat I know, the cable has become seriously corroded and the connectors have failed. Always use tinned cable and heat shrink connectors. Expensive but well worth it.
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Old 24 January 2006, 16:19   #13
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Quote:
Originally Posted by jyasaki
It is not a "marinization" of The water wicks up the stranded conductors, and corrodes the strands further up the cable.


jky
I call that corrosion creep does any body know the proper term for it
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Old 24 January 2006, 16:23   #14
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probably the real situation is most folks would not knowingly use non tinned cable, check your loom on your suz for tinned wire, also check any components you have purchased as not all manufacturers use tinned wire!

secret is to take the appropriate precautions in such cases.

Quote:
Originally Posted by Erin
Well said jky. I wouldn't ever use untinned cable on any boat I own, now that I've seen what happens to standard copper cable after just a few years. Even in the relatively dry engine bay of a large motor boat I know, the cable has become seriously corroded and the connectors have failed. Always use tinned cable and heat shrink connectors. Expensive but well worth it.
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Old 24 January 2006, 17:11   #15
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Why not just use gold and be done with - excellent conductor and totally corrosion resistant!!!
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Old 30 January 2006, 13:37   #16
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We only use tinned cable and heatshrink connectors - after 2 or 3 seasons Mercury looms are corroded over thier whole length if you don't protect them - glue lined heatshrink at either end helps ........
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