what is RK wire?

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    • #1621
      Johan von Konow

      I have got several questions regarding the wire I use to connect the components:
      First of all – The exact diameter of the wire is not critical. Any conductive wire will do.

      After lots of testing I think that 0.3mm diameter is the goldilocks option, not too stiff, and not too fragile.
      I have used strands of wire from 1.5mm RK cable (24 strands in each cable) since it can be bought in any hardware store at very low cost. The RK cable is typically used as internal wiring in fuse boxes and control units, since it is easier to bend than the cables used in the walls (with single or fewer strands that are thicker).


      Technical name is RK (H07V-K) (750/500 V), it typically follows IEC 60228 class 5. https://en.wikipedia.org/wiki/IEC_60228 and SS 424 02 31-3
      Here is one source in Sweden with an English website: https://www.biltema.se/en-se/construction/electrical-installations/installation-cables/coupling-cable-2000017929

      I’m sure that there are similar cables around the world. If you find one, please let me know the name in your region and I will update the post.

      If I try to convert the wire I used to AWG, I guess it would be something like: 14AWG24/28 or 15AWG24/29. Where the last number is most important (diameter of the strands).

    • #1632

      Thank you Johan; I learned some things today!

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