BT Fault Charges if fault is on customer wiring

Discussion in 'Broadband' started by Martin Brown, Jan 12, 2015.

  1. Why solid core?
     
    Tony van der Hoff, Oct 27, 2015
    #41
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  2. Martin Brown

    Roland Perry Guest

    For IDC crimping.
     
    Roland Perry, Oct 27, 2015
    #42
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  3. Martin Brown

    Chronos Guest

    Because IDC punch-downs, same reason infrastructure wiring is solid
    core. Stranded can cheat and allow the insulation to deform instead of
    displace.
     
    Chronos, Oct 27, 2015
    #43
  4. Martin Brown

    Woody Guest

    If your prefer to used stranded for its flexibility and you know how
    to use a soldering iron properly, you can remove a bit of insulation
    and twist and tin the wires before punching them down. Works a treat.
     
    Woody, Oct 27, 2015
    #44
  5. Martin Brown

    Phil W Lee Guest

    That's fine, if it is you that will be making the connections, but it
    won't be - it will be the BT installation engineer, who will probably
    refuse to work with stranded cable.
     
    Phil W Lee, Oct 27, 2015
    #45
  6. With good reason too. If the IDC is biting into solder instead of
    copper, the mechanical characteristics of the join will be quite
    different. A long time ago I used to tin stranded copper wire to
    connect it to brass terminals in mains plugs, because I thought it
    made them neater, but they always worked loose.

    Rod.
     
    Roderick Stewart, Oct 28, 2015
    #46
  7. Martin Brown

    John Weston Guest

    Sorry, but it's not fine. The BT installer is right to refuse
    since his punch-down connectors are designed for solid wire.
    The gap between the blades is designed to deform the solid
    copper core making an air-tight joint or maybe a cold-weld. If
    you try to use stranded wire then the wires will move out of
    the way of the pressure points making a simple rubbing contact,
    at best, that will fail quite quickly.

    If the wire is soft-soldered, this may retard this wire
    movement but the solder will "flow" away from the points of
    pressure over time, resulting in a poor connection some time
    later. This is often seen with screw-connectors tightened into
    a soldered, stranded wire where ring connectors or ferrules
    haven't been used to keep the soldered joint away from the
    pressure.

    Stranded wire is fine for crimp connectors or those with points
    that pierce the strands as in RJ45 plugs or on those sockets
    designed for the smaller stranded wire dimensions.
     
    John Weston, Oct 28, 2015
    #47
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