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Choosing the Right Cable for WLZ: 4 or 5-wire, Tauron ZE Box, YKY 5x16mm, TN-C Transformer

phoe 42681 46
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  • #1 18942190
    phoe
    Level 29  
    Hello,

    I need to perform an WLZ, i.e. plug the house into the ZE box (Tauron, if it matters).
    And now like this:
    - the transformer works in TN-C, i.e. in the box I have 3 phase terminals (Etimat T) + a single blue terminal for N.
    - in the construction project, it is necessary to make WLZ YKY 5x16mm?.

    What to do with the PE conductor, if I actually do WLZ 5x16mm??
    - can make 4x16mm??
    - leave the PE free and not clip in? (apparently ZE can attach)
    - or maybe, as a friend told me, make N and PE as 1 wire and connect as N?
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  • #2 18942195
    xury
    Automation specialist  
    I would not overpay for the cable and buy 4x16mm?, and I made a chapter at home.
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  • #3 18942199
    phoe
    Level 29  
    The chapter will be at home anyway, because you are not allowed to use the transformer earthing, but maybe there is some point in this extra wire, a reserve or whatever?
  • #4 18942291
    kkas12
    Level 43  
    phoe wrote:
    ... so in the box I have 3 line clamps (Etimat T) + a single blue clamp for N.
    And where will you connect this green and yellow vein?

    You certainly do not have a N terminal, but a PEN terminal.
    So arrange the 4-wire WLz and divide the PEN in the main table in a way that does not violate recognized technical rules.
    Thousands of times, this issue has been explained and discussed in this forum.

    phoe wrote:
    ... but maybe there is some point in this extra vein ...
    You are feeling unnecessary money?
    Donate it to a godly cause and do not be under the illusion that an extra vein in a cable laid in the ground will ever be useful.
    Do not bother with the project either, because you will not use it anyway. It was only needed to obtain a building permit.
  • #5 18943782
    phoe
    Level 29  
    Well, for me it makes no sense that the guy who takes the money, designs WLZ, signs under it, does it wrong, especially because he has black and white in terms of Tauron, about a transformer working in TN-C. ..

    Cool thanks.
  • #6 18943803
    kkas12
    Level 43  
    Dude, this project of yours is not a project of any kind. This is only a drawing attached to the building design of the facility, named so that you can get a building permit and not look for the designer of the electrical installation yourself.
    And that's the only way to treat him.
    In practice, it does not really matter because hardly anyone puts it into practice.
    The only thing that works in it sometimes is the location of the fuse board, which is needed to place the grommets under the spout.

    After all, this designer, when he was drawing it, had no idea where the building would be built or what the grid system would be that would power it.
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  • #7 18944753
    retrofood
    VIP Meritorious for electroda.pl  
    phoe wrote:

    And now like this:
    - the transformer works in TN-C, i.e. in the box I have 3 phase terminals (Etimat T) + a single blue terminal for N.
    - in the construction project, it is necessary to make WLZ YKY 5x16mm?.

    What to do with the PE conductor, if I actually do WLZ 5x16mm??
    - can make 4x16mm??
    - leave the PE free and not clip in? (apparently ZE can attach)
    - or maybe, as a friend told me, make N and PE as 1 wire and connect as N?


    Don't think about YKY, buy it YAKY . 4 x 16 mm?, because I don't see any need to put a 16 mm diameter of copper there. That's it, aluminum is enough.
    And you have the project, as your colleagues wrote. Copied some sample for building permit purposes. Really, such matters should be handled by your electrician.
    Besides, I have a question, has the electrician checked the foundation earth electrode of your house? Even before the foundation is poured.
  • #8 18945092
    phoe
    Level 29  
    I have "electric" heating and a power of 25 kW. ;)
    The cable length I need is maybe 20m so I will not combine it with alu.

    As for 4 or 5 wires, a person with electrical qualifications, after all, tries to adapt the project, calculates the demand, draws the cable route, etc. what kind of layout works for the trafo, because there are conditions attached.
  • #9 18945174
    kkas12
    Level 43  
    phoe wrote:
    The cable length I need is maybe 20m so I will not combine it with alu.
    Well, this stupid power industry does not use copper at all and supplies your meter with an aluminum cable.

    phoe wrote:
    As for 4 or 5 wires, a person with electrical qualifications, after all, tries to adapt the project, calculates the demand, draws the cable route, etc. what kind of layout works the trafo, because there are conditions attached.
    And you continue yours.
    You have four clamps. Where will you connect the fifth cable?
    You can always ask the "adapter" with permission to make changes, because the fifth wire is rubbish.
  • #10 18945355
    retrofood
    VIP Meritorious for electroda.pl  
    phoe wrote:

    As for 4 or 5 wires, a person with electrical qualifications, after all, tries to adapt the project, calculates the demand, draws the cable route, etc. what kind of layout works the trafo, because there are conditions attached.

    You know what? How many projects have you had in your hands all your life? This one is probably the first? I had dozens of them. Except for the ones I made myself. So I don't need to be trained in the subject anymore.
    But if you know better then do as you see fit.
  • #11 18945736
    Janusz_kk
    Level 39  
    phoe wrote:
    I have "electric" heating and a power of 25 kW.

    Apart from the topic, I will ask out of curiosity, what will you be heating with, mats or some electric heaters?
  • #12 18946722
    phoe
    Level 29  
    Pump + recuperator.
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  • #13 18946740
    Janusz_kk
    Level 39  
    And you need 25kW of power for the pump?
  • #14 18947055
    phoe
    Level 29  
    I also have a charger for the Nissan Leaf 11KW. :)
  • #15 18948781
    retrofood
    VIP Meritorious for electroda.pl  
    phoe wrote:
    I also have a charger for the Nissan Leaf 11KW. :)

    So you give YAKY 4 x 35 mm? and you can sleep well.
  • #16 18949536
    phoe
    Level 29  
    I have considerable doubts whether the 4x35mm? conduit that is left to pass the cable through will pass me. ;)

    I know that Alu is cheaper, but Cu is thinner and not liquid.
  • #17 18950812
    marcin55
    Level 12  
    On the other hand, I have a lot of doubts why give 4x35 mm?. YAKY 4x16 mm? is enough for 25 kW. YAKY 4x25 mm? is already with a large allowance and more is nonsense at all.
  • #18 18951049
    retrofood
    VIP Meritorious for electroda.pl  
    phoe wrote:
    I have considerable doubts whether the 4x35mm? conduit that is left to pass the cable through will pass me. ;)

    A conduit for pulling the cable ??? I think someone has been crushed ...
  • #19 18951083
    tyqva
    Level 35  
    And where is this conduit left?
  • #20 18951120
    Strumien swiadomosci swia
    Level 43  
    This is how it ends when the electrician is not employed on the construction site from the beginning. I wonder how you got the foundation earth electrode ?????? The subject of the farce, the electrician covers everything as it should be, only the electrician and not a random person with or without SEP.
  • #21 18951313
    phoe
    Level 29  
    The earth electrode is well made so please do not write nonsense ...

    As for the conduit, it comes out of the garage from the switching station and comes out with a foundation 20 cm below the ground level.
  • #22 18951462
    tyqva
    Level 35  
    phoe wrote:
    ... As for the conduit, it comes out of the garage from the switching station and comes out with a foundation 20 cm below the ground level.

    If there is a suitable diameter and proper bends are routed, note the following:
    retrofood wrote:
    .... A conduit for pulling the cable ??? I think someone has been crushed ...

    it is meaningless, a corrugated pipe (conduit) is used for such purposes.
  • #23 18951470
    Grzegorz740
    Level 37  
    I wonder how are you going to pull 20 meters of such a stiff cable into the conduit?

    I cannot imagine it, apart from the dilemma of whether 4 or 5 veins.
  • #24 18951475
    tyqva
    Level 35  
    For 25kW of power, a 4x16 Cu cable is enough, so it can be doable. This corrugated pipe is not 20 m long, it is just a piece of the route.
  • #25 18951502
    retrofood
    VIP Meritorious for electroda.pl  
    tyqva wrote:

    If the diameter is correct and the bends are properly routed, note the following:
    retrofood wrote:
    .... A conduit for pulling the cable ??? I think someone has been crushed ...

    it is meaningless, a corrugated pipe (conduit) is used for such purposes.

    I think it is used for such purposes for you, because it is definitely not for electricians.
  • #26 18951600
    tyqva
    Level 35  
    Buddy, I took your advice, and described it as pointless. You, on the other hand, personalize your statements. Control emotions, arguments please.
    Moderated By Topolski Mirosław:

    Please focus on the problem of the author of the topic and do not have your own discussion.

  • #27 18951663
    Strumien swiadomosci swia
    Level 43  
    tyqva wrote:
    arguments please.
    Well, it starts, if you have what you have in your signature, why are you asking us about such pearls ???
  • #28 18952075
    phoe
    Level 29  
    Omg, it's made like this, the conduit aka AROT has a little bend ...

    Choosing the Right Cable for WLZ: 4 or 5-wire, Tauron ZE Box, YKY 5x16mm, TN-C Transformer

    And the only question was whether 4 or 5 lived ... ;)

    Currently it is thrown over a 5x2.5 H07 and plugged into an erbette power socket. ;)
  • #29 18952119
    kkas12
    Level 43  
    I wrote to you before that it is not true
    phoe wrote:
    ... in the box I have 3 line clamps (Etimat T) + a single blue clamp for N.

    because you don't have the required N a PEN there.
    I also asked how will you insert two wires into one clamp?

    The answer was given a long time ago and you are still waiting for the "patting" of the fifth vein which is the fifth wheel of the wagon.
    I once presented the costly consequences of such a solution.
    Imagine the effect of losing the continuity of the N wire between the meter and the main table.

    PS
    After all, what do you have stacked up there?
    Peszel or arot?
  • #30 18952126
    phoe
    Level 29  
    AROT is a kind of conduit after all? I think 40mm.

    I already ordered YKY 4x16mm?, because no wholesalers had on site, only 5x16mm?.

    As for 2 wires in 1 clamp, there is now erbette on YKY 5x6mm? and 2 wires are connected to the blue clamp (PE + N).
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Topic summary

The discussion revolves around the selection of the appropriate cable for connecting a house to a ZE box from Tauron, specifically debating between using a 4-wire (4x16mm) or a 5-wire (5x16mm) configuration. The transformer operates in a TN-C system, which raises questions about the handling of the PE conductor. Participants express concerns about the necessity of an additional wire, the implications of using a PEN conductor, and the adequacy of a 4x16mm cable for a 25 kW electric heating system. The conversation also touches on the importance of adhering to project specifications and the role of electricians in ensuring compliance with electrical standards. Ultimately, the author decided on a 4x16mm cable, which was successfully installed without issues.
Summary generated by the language model.
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