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Stripboard wire size?

Discussion in 'Electronic Basics' started by Guy Fawkes, May 8, 2007.

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  1. Guy Fawkes

    Guy Fawkes Guest


    I'm trying to order wire for a stripboard project of mine but I'm not sure
    what kind of wire I should order (size, SWG, insulation etc).

    Any suggestions?

  2. Chris

    Chris Guest

    Hi, Guy. Since you didn't describe your project at all, this may not
    apply (for instance, if any of your wires are carrying an amp or more
    of current, or if you're using more than 24 volts on any line). But
    it's customary to scrounge phone line twisted pair wiring (typically
    24AWG solid) for stripboard and protoboard work.

    If you look around, you should be able to scrounge a lifetime supply
    at any construction site. Just make a test first by stripping a
    sample. If it's too old, it will have oxidized in the insulation,
    making soldering very difficult.

    Enjoy the fireworks.

  3. Eeyore

    Eeyore Guest

    Flexible wire to connect to and from the stripboard ? 7/0.2 PVC insulated is the
    norm. No-one still uses SWG afaik.

  4. Circa 8 May 2007 04:44:52 -0700 recorded as
    <> looks like Chris
    I second this idea, and add that one could find some discarded cat5e cable
    that would suit the purpose as well. Cat5e is also 24ga. solid wire.
    Well, usually solid. Telephone pair cable is always solid. If one can
    find a three to five foot piece of 25-pair cable, one is, as you say,
    probably set for life with project wire.

    An advantage to using telephone or cat5 cable over buying a roll of single
    conductor is the insulation color coding. Helps keep signal tracing
    straight when working a project.

  5. No, it isn't. The 25, 50, and 75 pair telephone cable used on older
    1a2 type telephones is very fine stranded cable. I still have dozens of
    the cables from scrapped business phones. One end has a 50 pin blue
    ribbon connector, and the other has either another blue ribbon
    connector, or small spade lugs.

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  6. Circa Tue, 08 May 2007 13:09:28 GMT recorded as
    <> looks like "Michael A. Terrell"
    I don't imagine it would work very well on punch-down blocks. <googles>
    Ah. It appears the 1A2 key telephone systems are completely connectorized.
    Learn something new every day! :)
  7. Guy Fawkes

    Guy Fawkes Guest

    Hi Chris,

    It's a digital microcontroller project with low-voltage, low current (<24V,
    <1A) circuitry.

    What is the difference between AWG and SWG wiring?

  8. Guy Fawkes

    Guy Fawkes Guest

    Hi Graham,

    The 7/0.2 is that in mm2? or diameter in mm?


  9. The station wire is solid, but the instrument cables are stranded.
    There are lots of 66 series punch blocks in 1A2 systems. The largest
    I've seen was fed by 2000 phone lines at a regional FAA office building
    that was under construction at Ft Rucker, Al. in the early '70s. There
    was a wire room on every floor, with a lot of four inch conduits between

    I don't know how many actual phone lines were used when the complex
    opened, but the military rarely ran more than 25% futures.

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  10. Marra

    Marra Guest

    I just use bellwire or a single solid core wire.
  11. Eeyore

    Eeyore Guest

  12. Joerg

    Joerg Guest

    CAT5 works well for low currents. I just dragged a spool into a client's
    building to re-wire a VME cage. That way you get eight different colors,
    makes following lines much easier.

    With 25-pair just make sure it's solid conductor, not all are as Michael
    wrote. The advantage is that you really get the whole rainbow in
    colors with some of them. Even weird ones like purple or pink. Mine's
    all black with wire marker codes on them :-(
  13. Eeyore

    Eeyore Guest

    Solid is fine for making links on the stripboard itself for sure. For connection
    to devices and connectors off-board I always use stranded.

  14. jasen

    jasen Guest

    I use some tinned 24AWG wire I scrounged from an old phone exchange.
    Before I happend across that I was using untinned 24AWG from an old phone

    these days scraps of "CAT5" (CAT5e, CAT6 etc) network cable
    are easy to find in dumpsters near almost-completed buildings.
    and are almost as good (only not tinned) so harder to solder.

    The pro's used teflon coated wire. the PVC coated phone/network wire
    tends to lose its insulation near the end if soldered for too long,
    but otherwise it's good.

  15. Circa 9 May 2007 09:18:14 GMT recorded as
    Solder? Who uses solder? Wire-wrap and terminal blocks for me, thank you
    very much. :) Solid conductor rules my world!
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