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What is the purspose of pre-tinned wire?

Discussion in 'Electrical Engineering' started by Sandi, Apr 17, 2009.

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  1. Chris Street

    Chris Street Guest

    I most assuredly do as I pointed out in the post above. The suplhide is
    an oxidation product but it is most assuredly not an oxide as has been
    claimed several times.
  2. Jamie

    Jamie Guest

    Ou, bad move!"
  3. Jamie

    Jamie Guest

    Well I suppose if you were to use the wire with in a normal time from
    the manufacturing date, you wouldn't need to use that flux would ya?"
  4. Mr. Haney

    Mr. Haney Guest

    Solder comes with flux, you total idiot, and solder processes all use
    flux as well.

    That borders on being one of the most stupid posts you have ever made,
  5. Phil Allison

    Phil Allison Guest

    "Tyrorex" <

    ** Obvious sock puppet.

    ** You need to see a shrink - ASAP.

    Cos you are totally NUTS.

    Look up " silver tarnish " on Google for ****'s sake.

    ...... Phil
  6. Ross Herbert

    Ross Herbert Guest

    On Fri, 17 Apr 2009 22:54:38 GMT, Howard Eisenhauer

    :>Some insulated multistrnd copper wire is pre-tinned and a lot is
    :>What is the purpose of pre-tinned wire? As far as I can see the
    :>advantage is that the copper core doesn't oxidise which means the
    :>wire can be soldered or fixed to a terminate with only minimal
    :>Sounds like a good thing to me, so why isn't almost all wire pre-
    :>Is cost really so different?
    :>Does the tinning-coating replace where copper would have been in
    :>the overall wire and tinning is of higher reistence?
    :>Is flexibility affected?
    :In the telecom industry the rule is "silver on silver". Back in the
    :bad old days there could be problems with diss-simmilar metals
    :corroding & creating noise on circuits both from rectification effects
    :& from current punch-through across the junction when voltage was
    :applied to the circuit, i.e. "going off-hook". In some cases
    :"sealing" current was (& still is) applied on a constant basis to
    :circuits that didn't require it for operation, just to keep junction
    :corrosion from getting bothersome.
    :Although not part of the original Bellcore standard I've actually
    :speced tinned wire for T1 circuits going into areas I knew were going
    :going to be climate controlled.

    That is correct. A typical manufacturer of internal switchboard cable
    application chart shows that their Switchboard 100 product (equivalent to what
    most western countries would use for internal cabling) is suitable for T1 and
    DS1 applications.
  7. krw

    krw Guest

    No, oxide/sulfide is not what makes DimBulb a dope.

  8. Carlo

    Carlo Guest

    That showed him up. Hee hee! You owned him.
  9. Carlo

    Carlo Guest

  10. Carlo

    Carlo Guest

    Not sure I understand why this exchange got so lively. You wrote

    "Tin plated wire is notorious for NOT taking solder, especially
    when it is inside teflon."

    Assuming you wrote what you meant to write then you said "tin
    plated wire is notorious for NOT taking solder". You also added
    that furthermore it was even harder still to solder tin plated
    wire when it was inside Teflon insulation.

    Aren't some posters responding to your clearly made statement

    "Tin plated wire is notorious for NOT taking solder"

    because it probably seems a bit unexpected to them? I have to
    confess it does a bit unexpected to me too. It doesn't relate to
    my experience or known facts.

    The Teflon insulation you mention is an additional observation
    which you offer as an extra fact but it's not particularly
    relevant to the OP's question.

    Seems to me this discussion is based around your statement:

    "Tin plated wire is notorious for NOT taking solder"

  11. You are so retarded that you do not even know what solder creep is,
    much less how it relates to failure modes in cinched connection

  12. If you've ever worked with both SPC and TPC, you would know that SPC
    takes solder an order of magnitude better than TPC does.

  13. You all also seem to miss the 'ide' part of all this. It may not be
    "Silver Oxide"itself, but even the 'tarnish' that is based on grabbing
    sulfur molecules out of the air, is still an oxidation process.

  14. FatBytestard

    FatBytestard Guest

    Go back to your gay porn, Roy.
  15. Chris Street

    Chris Street Guest

    I hadn't missed that at all as I pointed out in the first post I made it
    is a redox reaction. However oxidation products are not always oxides -
    burn a jet of chlorine gas in a hydrogen atmopshere and chlorine is
    reduced, hydrogen is oxidised, the oxidation product is hydrochloric
    acid and no oxygen or oxide is to be found....
  16. Ooops- typo, I meant to say I spec'd tinned wire for areas I knew
    were *not* to be climate controlled.

    More specificly DSX panels mounted outside in un-heated, not
    particularly weatherproof, cabinets.

  17. Mr. Haney

    Mr. Haney Guest

    Sad that the history of Alzheimer's and senility that runs in your
    family is also obviously taking your mind as well.

    Well, maybe it's not so sad after all...
  18. UpGrade

    UpGrade Guest

    Soon enough, he'll catch up to Thompson.

  19. Yes and unless and until a crime has been committed, which it hasn't,
    you can all **** off and die.
  20. Chris Street

    Chris Street Guest

    Combustion is probably the closest you are going to get. Oxidation is
    generally associated with a loss of electrons, you could even argue that
    something like a lewis acid and base is a redox reaction...
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