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UTP Cable Installation: Can You Safely Lay UTP Cables Under Plaster Near 230V Wires?

bogdan_10 16140 9
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  • #1 11429257
    bogdan_10
    Level 20  
    Posts: 526
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    Hello, I am doing a general renovation of the apartment and I wonder if I can lay the UTP cable under the plaster next to the 230V cables.
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  • #2 11429270
    jimasek
    VIP Meritorious for electroda.pl
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    You can arrange it so easily next to the electrical installation, it is not a transformer or a radio transmitter.
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  • #3 11429371
    penknife
    Level 21  
    Posts: 294
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    Although the distance for parallel installation, from what I remember, should not be less than 20cm for 100Mbps, and not less than 50cm for 1Gbps. And when crossing the wires, they should form a right angle. (Of course my memory is not infallible)

    As for the cable, I advise STP
  • #4 11429415
    jimasek
    VIP Meritorious for electroda.pl
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    I do not recommend a shielded twisted pair for an apartment, because poorly made grounding or the lack of it will cause the screen to "do" as an antenna and collect additional interference. In addition, all FTP equipment is more expensive and disruptions in home installations are minimal and do not affect the stability of the network (proven in many installations).
  • #5 11429449
    bogdan_10
    Level 20  
    Posts: 526
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    Well, now I am stuck, it is possible or not.
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  • #6 11429460
    jimasek
    VIP Meritorious for electroda.pl
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    Take it easy to arrange the UTP, there will be no problem in the apartment. Just be careful with the continuity of the insulation so as not to damage it.
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  • #7 11429500
    bogdan_10
    Level 20  
    Posts: 526
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    jimasek, thank you very much and best regards.
    bogdan_10
  • #8 17575738
    nono91
    Level 10  
    Posts: 44
    Rate: 8
    Hi, I have a similar problem. I would like to hide the cables in a strip against the wall. So the power cord and the twisted pair would go parallel to each other for about 3 meters. In addition, if I succeed, I would also like to hide the HDMI cable there. I would like to ask for advice is it a good idea?
  • #9 17576008
    makosuu
    Network and Internet specialist
    Posts: 2984
    Help: 369
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    It should be fine. 3 meters is nothing.

Topic summary

✨ The discussion revolves around the installation of UTP cables under plaster near 230V electrical wires during apartment renovations. Participants suggest that it is generally safe to lay UTP cables alongside electrical installations, provided certain precautions are taken. Recommendations include maintaining a minimum distance of 20cm for 100Mbps and 50cm for 1Gbps when running cables parallel, and ensuring that any crossings occur at right angles. Some users advise against using shielded twisted pair (STP) cables in residential settings due to potential grounding issues that could lead to interference. Overall, the consensus is that with careful installation, there should be no significant problems.
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