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Thread: How to tell if cable is copper or another metal?

  1. #1
    Sergeant Major Weller's Avatar
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    Default How to tell if cable is copper or another metal?

    One of my recent trailer purchases had a stray 25 foot section of 3 phase cable tossed on the deck and I'm trying to identify it before putting it to use or selling it.

    I cleaned it and found these specs...
    CO - 04HOF(4/4)1340 MIL - C - 3432D CAROL CABLE CO WEST

    Did some research and came away with...

    M3432 Heavy Duty CO Cable - 600V


    1st Letter = Duty:
    H: Heavy Duty, rated 600 volts


    2nd Letter = Class:
    O: Oil-Resistant, Medium Low Temperature (-40C to 75C)


    3rd Letter = Flexibility:
    F: Flexible

    Not sure what the 1340 refers to.

    I cut back one of the wires to get a better look.

    Copper, aluminum, tin plated, silver plated, other?

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    4 Star General Floridianson's Avatar
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    I have some cables like that and I thought they were tinned copper. I did some good marine grade tinned copper wires when I up dated my boat. Much better corrosion resistant and you don't find the wire corrosion walking through the whole cable.
    Last edited by Floridianson; 05-05-2019 at 19:30.
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