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Need help with the formula to convert conductor wire in KG over to KG/KM

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  • Need help with the formula to convert conductor wire in KG over to KG/KM

    Hi All

    First post here

    I am working with some data of conductor wire at various different sizes and raw material and the weight is based in KG.
    The data is well organised into AWG size and stranding etc.. E.g. 24AWG wire made up with a 19/36 stranding.

    What I need is a formula to convert this data in KG over to KG/KM.
    The raw materials vary from Tin coated copper / Nickel Coated Copper / Silver Coated Copper to Aluminium.

    Any help would be gratefully received.


  • #2
    The mass in kilograms is for some particular length. Hopefully you know this length, can express it in kilometers and simply divide by it (1 km = 1000 m).

    Is the wire bare or insulated? It is also possible to find wire tables that give mass per unit length, but most are for bare wire.

    Is the mass you have a gross (includes spools, wrappings, shipping pallets) or just the net mass of the wire?


    • #3
      Hey, thanks for the reply.

      Do you know what, after reading you response I have literally just had to facepalm myself for being such a dufus! I've been looking at raw data for all sorts of these things for the last couple of days and my brain is mashed potato now!

      What I am actually trying to do is to ascertain a cost per kilometre of the conductor wire. The data has a cost per kilogram of the raw material so I need to work out how many kilometers of wire I can get with one KG of the raw material. The raw material is the bare wire with now insulation/spools/packaging etc..

      E.g. I have a 24AWG Tinned Copper wire with a 19x36 Stranding. It costs $45 per KG
      What I need to work out is how many KM I could make of that wire with just 1 KG of it.

      I hope that make sense.



      • #4
        I can only find tables for solid copper wire. Stranded should have (approximately) the same cross sectional area and therefore mass (within minor rounding based on the number of strands not giving EXACTLY the tabulated area.) Not sure how to account for the tinning and/or insulation. I would probably weight a sample of known length as I don't know where to find the data (or ask the manufacturer)

        24 AWG is 1.82 kg/km. For bare wire this should be pretty close, as the stranding and tinning must give equivalent resistancee per unit length for ampacity. But weigh a sample length if you need high precision.