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  1. #1
    Join Date
    Mar 2007
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    York SC Licensed in NC and SC
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    596

    Question Tin coated copper question

    Did all the tin coated copper have fabric sheathing?


    Picture did not show up, but it looks like aluminum wiring with plastic coating.
    Due to the age of the house I was thinking it might be tin coated copper.

    1947 house but has had electrical work over the years....

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  2. #2
    Join Date
    Mar 2007
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    Santa Rosa, CA
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    Default Re: Tin coated copper question

    Bruce,

    I believe that I have seen tin coated copper with rubber insulation. 1940s sounds about right.

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  3. #3
    Join Date
    Mar 2007
    Location
    Philadelphia PA
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    3,177

    Default Re: Tin coated copper question

    I've never seen tin-coated copper without cloth covering, for what that's worth.

    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
    www.ArnoldHomeInspections.com

  4. #4
    Joseph P. Hagarty's Avatar
    Joseph P. Hagarty Guest

    Default Re: Tin coated copper question

    Quote Originally Posted by John Arnold View Post
    I've never seen tin-coated copper without cloth covering, for what that's worth.

    Agreed...


  5. #5
    Martin lehman's Avatar
    Martin lehman Guest

    Default Re: Tin coated copper question

    Rubber sheathing. Tin was used to prevent deterioration.


  6. #6
    Jon Randolph's Avatar
    Jon Randolph Guest

    Default Re: Tin coated copper question

    Bruce,

    FWIW - Tinned copper that I have seen always has a dull dirty looking exterior finish, aluminum always has a clean looking finish. Also, trace the neutral back to the bus bar, you may be able to see the end of the neutral there. With tinned copper, you should (but not always) be able to see at least some copper at the cut. Of course, any overheating of the aluminum will leave it with a duller finish.


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