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Choosing Right Plug: RJ45 for Twisted Pair Cat.6 Draka UC400 S/UTP 4P with Thick Wires

harmichalh 13629 7
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 12746209
    harmichalh
    Level 12  
    Hello, I bought and pulled a twisted pair at home, but the wires are too thick for regular RJ45 plugs (8P8C). What plugs should I buy (and will they fit into the regular crimper that the previous plugs used to fit)?
    The cable has the following markings:
    DRAKA UC400 SCPEEN 23 CATEGORY 6 U / FTP 4P ..

    Anticipating the questions, even without insulation (cable, I did not remove insulation cores), the wires (4 white, orange, brown, blue and white) do not fit into the plug. I tried with a plug with a screen and without a screen.

    And by the way, two questions;
    a) as I wrote before, I have 4 white veins, I do not have white-colored, in which case is there a white-colored one of the same color together with the colored one (e.g. it is white and green together with the green one)?
    b) I read that if you hook the screen on both sides, it will act as a capacitor, but I don't know if it was for an STP or FTP cable. How to connect the screen?
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  • #2 12746232
    mbo
    VIP Meritorious for electroda.pl
    The easiest way is to plug in a socket.

    I was able to get an ordinary plug on another cat 6 cable.
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  • #3 12746391
    xury
    Automation specialist
    Can be. I have also been struggling with an hour with one plug recently, but it worked. The veins must be perfectly straight when being inserted. And the ends are cut without flattening or tearing the insulation. I also used pliers when pressing.
    As for the white veins, they are paired with the colored veins as you think.
    As for the screen, it should be connected to the crossbar side. More than charging, I would be concerned about the potential difference between devices.
  • #4 12746411
    sq9cwd
    Level 27  
    harmichalh wrote:
    What plugs should I buy (and will they fit into the regular crimper that the previous plugs used to fit)?

    Standard plugs fit.
    harmichalh wrote:
    Even without insulation (cable, I did not remove insulation cores), the wires (4 white, orange, brown, blue and white) do not fit into the plug. I tried with a plug with a screen and without a screen.

    Standard plugs fit.
    harmichalh wrote:
    a) as I wrote before, I have 4 white veins, I do not have white-colored, in which case is there a white-colored one of the same color together with the colored one (e.g. it is white and green together with the green one)?

    Yes, the cables are paired for a reason, sometimes not well marked, it is usually a derivative of the price.
    harmichalh wrote:
    How to connect the screen?

    Connect from the switch side, if it is a network of 2 computers, you can choose one of them at random.
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  • #5 12746541
    harmichalh
    Level 12  
    sq9cwd wrote:
    harmichalh wrote:
    What plugs should I buy (and will they fit into the regular crimper that the previous plugs used to fit)?

    Standard plugs fit.
    harmichalh wrote:
    Even without insulation (cable, I did not remove insulation cores), the wires (4 white, orange, brown, blue and white) do not fit into the plug. I tried with a plug with a screen and without a screen.

    Standard plugs fit.

    The problem is that this is the drug 23 AWG - 0.573mm and the "classic" plugs are for the AWG 24-27. In this way, I try to push 9 wires into 24 AWG and these wires do not fit. I called the Eltrox store in my city and they said they have such plugs, tomorrow I will buy and write if it worked
  • #6 12752430
    harmichalh
    Level 12  
    I bought the plugs and managed to insert the cable (it was not easy, but I pressed it somehow), I clamped the plugs on both sides in the T568B standard (on both sides, straight cable) and before connecting to the router I checked if everything was ok in this way:
    - I connected the connectors to the cable on both sides
    -I cut a piece of the old Cat 5e cable with plugs and stripped the insulation from the wires
    -I connected the wires from this twisted pair to the breadboard and connected the plug to the connector
    - I measured the resistance with a multimeter, there was no conductivity between the wires - that's ok, even though it was hard to press, nothing rubbed
    -I connected the wires in pairs on the board (e.g. white and blue with blue)
    - at the other end of the cable I did the same with the breadboard and measured the resistance - on all pairs it was 5-9 Ohm, i.e. ok, the plugs are tightly clamped, the cable is not damaged anywhere (e.g. during wall mounting

    Satisfied, I connect the cable to the router and computer. but unfortunately the cable is not connected ... I checked these combinations:
    -router A - router B
    -router A - router C
    -router B - router C
    -router A - computer
    -router B - computer
    -router C - computer

    The effect is the same every time - the cable is disconnected. What could be the reason?
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  • #7 12752520
    CHACA
    Level 43  
    Look carefully again and check it, it turns out that there is something wrongly done.
  • #8 12752562
    harmichalh
    Level 12  
    I found the cause of the problems - I put the wires on one of the plugs in the reverse order, i.e. brown and white and orange in the last. I tightened the new plug and ran the tests again:
    - nothing touched
    -only the second and fourth pair was conductive - the remaining 2 pairs were too weakly plugged into the plug

    Still, it all works, which is weird because the 2nd and 3rd pairs are used in the 100Base-TX standard. Tomorrow I will do everything as it should be, but at least I already have internet and I know everything is working. The topic can be closed. Thank you for your help.

Topic summary

The discussion revolves around the challenges of using RJ45 plugs with a Draka UC400 S/UTP 4P twisted pair cable, specifically with 23 AWG thick wires that do not fit standard RJ45 connectors designed for 24-27 AWG. Users suggest that while standard plugs can work, it is crucial to ensure the wires are straight and properly cut. The original poster successfully found compatible plugs after consulting a local store and managed to connect the cable using the T568B standard. They conducted resistance tests to confirm proper connectivity, identifying and correcting wiring order issues that initially caused problems. The importance of correctly connecting the cable shield to avoid potential differences was also discussed.
Summary generated by the language model.
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