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Detached House Electrical Installation: TN-CS System, Main Switch, RCCB 40A 30mA, Fuses B10/B16

michal180183 126612 32
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  • #1 11285707
    michal180183
    Level 14  
    Hello. I would like to make an electrical installation at my cottage. I made such a preliminary diagram and I would like a specialist to say whether such connections will be correct.
    Under the conditions of the connection, the power engineer wrote that the installation was to be made in the TN-CS system, and the power engineer would make the connection through an overhead line in the TN-C system.
    As I mentioned in the post about grounding, I will try to achieve a resistance of 10Ohm. All this will be checked by a licensed electrician, but I would like to do the entire installation and all connections myself.

    1- main switch
    2- phase indicator lights
    3- residual current circuit breaker 40A 30mA
    4- N cable strip
    5- grounding strip
    6- fuse B10
    7- fuse B10 - about 10 bulbs will be connected to fuses 6,7,8
    8- fuse B10
    9- fuse B10 - 12 halogens will be connected to the fuse
    10- fuse B16
    11- fuse B16
    12- fuse B16
    13- fuse B16 - no more than 4 sockets will be connected to the fuses 10, 11, 12, 13, 14 on the line (the sockets will be connected with a loop. The wire will come out of the fuse, go around the room and return back to the box)
    14- fuse B16
    15- fuse B16 - connection of 3 sockets to a hydrophore, a furnace with a feeder and a boiler
    16- fuse D25 - connection of the socket to the force
    17- lighting about 10 40W bulbs
    18- lighting about 12 halogens
    19- sockets - no more than 4 pcs. Per line
    20- sockets in the boiler room
    21- force socket

    I am asking for an opinion whether such installation will be functional. Is it possible to connect a second residual current circuit breaker to this system only under force and where to connect it and where to connect a surge protector? (The house does not have a lightning protection system)
    The lighting is on YDYp 3x1.5mm cables
    Sockets on YDYp 3x2.5mm
    Power socket on YDYp 5x2.5mm
    The earth electrode will be made on a 16mm wire

    Detached House Electrical Installation: TN-CS System, Main Switch, RCCB 40A 30mA, Fuses B10/B16
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  • #2 11285776
    kkas12
    Level 43  
    Hundreds of times it has been explained that the main switch interrupting the N-track is not a good idea.
    It was also explained that there is no obligation to ground the PEN division point, but the PE busbar in the building should be grounded and the connections should be made, and the PEN should be divided in the main switchboard of the building.
    It also explained that a four-pole RCD protecting several single-phase circuits is not a good idea.
    It was also explained that only socket and "bathroom" circuits must be protected by a residual current device.
    However, there is no such obligation in the case of stationary receivers (not connected by means of a socket and plug) and lighting circuits.

    But for what purpose is a colleague duplicating the thread ???
    Link
  • #3 11286009
    michal180183
    Level 14  
    I understand that there is no obligation, but I wanted to find out if such an installation will work properly. I will skip the lighting on the differential. Will the rest work properly? And where to attach a power differential and a surge arrester?

    It does not duplicate the thread. In that post, I only asked about the earth electrode.
  • #4 11286023
    kkas12
    Level 43  
    Include in the "diagram" what I wrote you and we will see if it will be correct.
  • Helpful post
    #6 11286997
    kierbedz4
    Level 36  
    What effect you will get when you secure the saw socket with a D characteristic, when the power industry secures you on its side with an S 25A type B protection with a B characteristic.
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  • Helpful post
    #7 11287604
    INTOUCH
    Level 30  
    kierbedz4 wrote:
    when the power industry secures you on its side with an S 25A type security with B characteristic
    Have you seen such cases with your own eyes?
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  • Helpful post
    #8 11287723
    zbich70
    Level 43  
    INTOUCH wrote:
    kierbedz4 wrote:
    when the power industry secures you on its side with an S 25A type security with B characteristic
    Have you seen such cases with your own eyes?

    I have seen. And it's not one.
  • #9 11287813
    michal180183
    Level 14  
    Ok, gentlemen, I know everything. Energetyk will build a meter box with B-25A protection in the house. They will do the grounding and from the meter I put the cable to the fuse box inside the building. I took a picture of my inbox and made calls. Please, say whether this connection will be good and with what cable to connect the box with the meter outside with the box with security inside - 5x? Mm cable?
    The connected power is 16kW. As in the photo, I used a surge arrester for the first time, a main switch, control lamps, a residual current device (as suggested by my colleague Kkas12 only for socket circuits), B 10 circuit breakers for lighting, B 16 circuit breakers for sockets and a three-phase C circuit breaker 20 per power socket. Please, comment and further suggestions. I note that I used a four-pole RCD because I do not have the money to buy a single one and protect each circuit separately. Thank you in advance for your help.
    Detached House Electrical Installation: TN-CS System, Main Switch, RCCB 40A 30mA, Fuses B10/B16
  • Helpful post
    #10 11287836
    kkas12
    Level 43  
    Quote:
    Gentlemen, I already know everything.
    Congratulations on your self-assessment.
    Buddy, you are wrong. And it's not about cash on the RCD.
    At least not only that.
    Contact an electrician who will do what you want.
    This is the only advice that can help you.
  • Helpful post
    #11 11287854
    Anonymous
    Anonymous  
  • #12 11287906
    michal180183
    Level 14  
    A colleague of kkas12, I can see that he is sticking to "I already know everything", it was that the energeticist explained to me what they are doing and what belongs to me. If I knew everything, I wouldn't post on this forum. I talked to an electrician who will check it and he said that this three-phase RCD is not a good solution, but it can be. If there are any problems, it will protect the circuit with several RCDs. Is the connection in the picture ok and does something need to be improved? As my colleague Kkas12 suggested, I used a main switch that does not interrupt N, and I only secured the sockets with a differential. Is the rest okay?

    As I wrote earlier, an electrician will come and check everything and if something is wrong, he will correct it. Just doing it yourself will save some money and the electrician does not care that he will earn less - because he will simply earn less.
  • Helpful post
    #13 11287955
    kkas12
    Level 43  
    Such a switchgear guarantees a completely safe installation.
    Installing without voltage is always safe.

    And if someone explains to the author what the error is, the moderator will be very dissatisfied.
    All-knowing people do not make such mistakes.
    Even with savings.

    Let it get to him that the old adage about high school graduation, willingness to be honest and officer grades has never been true.

    A colleague kkas12 does not cling, but just crashes the posts or the whole threads into the trash.
    This is just to remind your colleague to weigh the words in the future.
  • #14 11288018
    michal180183
    Level 14  
    You enjoy making fun of someone. I think I explained to you that it was related to what the energy specialist does and what the connected entity must do because I previously stated that the energies do the connection in the TN-C system and it turned out that they do in TN-CS. I ask people if this connection is correct or not, and if not what is wrong, you can only say that the difference should not be three-phase.
    kkas12 wrote:
    Include in the "diagram" what I wrote you and we will see if it will be correct.

    So, is it correct or not? If not, write what is wrong or write that you will not help, and everything.
  • Helpful post
    #15 11288030
    kkas12
    Level 43  
    It does not mean that the entity to be connected performs activities about which it has no idea.
    You are not an electrician and I just want it to reach you.
    What is the problem I explained in an earlier post.
    100% safe installation, unfortunately completely non-functional because without voltage.

    And instead of writing nonsensical posts and demanding instructions, start thinking for yourself.
  • #16 11288077
    michal180183
    Level 14  
    I graduated from electrical school with an electrician profile 10 years ago. I do not have the rights and I have not trained in this direction any further because my company provides other services. I have no experience in installations up to 1kV or any other. I remember a bit from school, but not everything, that's why I asked for help. 10 years ago, they taught us how to connect contactors and rewind motors, less time was spent on RCD type protections (they taught a little about it, but you forget) or, for example, with a bistable relay (and yet with the help of an electrode I managed to do it everywhere in my home). the fact that a wrong installation can be a threat to people, so everything will be checked by a licensed electrician. Mainly, it was about the correct order of the protection connections, i.e. 1 - surge arrester, 2 - main switch, 3 - residual current device.

    So thank you for your help.

    I suppose the error is connecting the surge arrester, right?
    I do not have a schematic for it, but I noticed that the lower contacts are bridged, so probably the lower contacts (the ones that are bridged) should be connected to the PE wire, correct?
  • Helpful post
    #17 11288157
    INTOUCH
    Level 30  
    I have given you free sources of information on a tray.
    You didn't even look at them.
    If you were an electrician, you would first try to deepen your knowledge, and not ask annoying questions on forums.
  • #18 11288220
    michal180183
    Level 14  
    Is it annoying to ask for proper connection and a request to apply corrections? For this there are forums to ask questions and get answers. When someone asks me about something I know about, I answer them and correct them when something is wrong and I do not make a big problem of it. Thank you very much for the tutorial, I will read it as soon as I have time to do so. You can probably tell me how the surge arrester should be connected. Is it okay in the corrected photo?
    Detached House Electrical Installation: TN-CS System, Main Switch, RCCB 40A 30mA, Fuses B10/B16
  • Helpful post
    #20 11288426
    KuReK93
    Level 17  
    My friend michal180183 what i noticed:
    1. Uneven load of phases (phase marked in red is used only in power socket)
    2. No residual current circuit breaker for the bathroom circuit
    3. No residual current circuit breaker for the kitchen circuit
    4. An additional overvoltage limiter could be useful if the home has sensitive electronic equipment (and it will certainly be because there are more and more electronics, so it is worth taking this into account)
    5. Saving on residual current devices or surge arresters is in my opinion nothing wise, it is better to add even a few hundred zlotys than then have real problems and expenses (also health)

    Already corrected the linguistic errors sincerely for my colleague kkas12
  • #21 11288486
    Miniax
    Electrician specialist
    However, I also suggest that you call an electrician for the sake of peace.
    - uneven loading of the phases,
    - no type B limiter (unless it is in ZK),
    - no back-up protection of the protectors,
    - one RCD and a three-phase one for the whole,
    - switchgear "bursts at the seams",
    - no protection of phase controls,
    - what about GSW?
    Something would still be found, but I don't have the strength to look at it anymore.
  • #23 11288540
    Miniax
    Electrician specialist
    INTOUCH wrote:
    Miniax wrote:
    - no back-up protection of the protectors,

    The pre-meter protection will probably have less than 35A and you write about the limiter back-up?



    @Edit

    Yes, you are right, although the author, as an "electrician", should judge by himself how much my remarks are necessary to introduce in his case.
  • #24 11288558
    KuReK93
    Level 17  
    Miniax wrote:
    Of course, in some situations, back-up is not required.
    Not only if the value of the rated current of the fuses (located before the limiter, in this case, the pre-meter protection) is lower than the permissible value of the current that can flow through the limiter.
  • #25 11288589
    Miniax
    Electrician specialist
    KuReK93 wrote:
    Miniax wrote:
    Of course, in some situations, back-up is not required.
    Not only if the value of the rated current of the fuses (located before the limiter, in this case, the pre-meter protection) is lower than the permissible value of the current that can flow through the limiter.


    These are certain situations.

    I have already improved, so there is no need to drill down, because this is not the topic.
  • #26 11288653
    michal180183
    Level 14  
    Such questions as removed are of no use. [Kkas12]
    The house is small, 2 rooms, kitchen, bathroom, boiler room, together some 12 sockets secured by 1 three-phase differential. In a block of flats in a m3 apartment, I have 4 fuses and everything is flickering. I realize that I can protect each circuit separately and I can "secure the protections", but for now I can afford what is in the picture and I am just asking if the connections are correct?
  • #27 11288697
    kkas12
    Level 43  
    No, they are not correct.
    What is "back-up protection"?
    In this switchboard, you will not do anything else later.
    The reason is simple.
    There is no space.
  • Helpful post
    #28 11288707
    KuReK93
    Level 17  
    michal180183 wrote:
    but for now I can afford what is in the picture and I'm just asking if the connections are correct?

    My friend michal180183 but how correct?
    Safety? It probably doesn't.
    Functionalities? I would argue ...
    You ask if you put the cable in the holder correctly and screw it with a screw?
    Assuming that you have some knowledge about electricity and you connect it nicely, the connection will be correct, just like the connection of the plug to the socket cannot be slept ...

    PS And do not be offended at me or any friend from the forum because no one wants bad for you, even a "terrible moderator" kkas12 gives you good advice.
    If you do not have the financial resources yet, then maybe you can postpone the construction of the district and that's it.
    Once again, the colleague will delete the moderator's entry and he will go on "vacation". [Kkas12]
  • #29 11288779
    michal180183
    Level 14  
    Mr. KuReK, I am not offended by anyone, but these spitefulness are unnecessary. I just wanted to find out if the connection of the individual switchgear elements is correct. And if I threw a three-phase RCD from this switchgear and secured each of the 4 circuits with separate RCDs, would it be better?
    I cannot postpone the construction of the switchgear because my contract with the power engineer is forfeited and so I was 2 months late. I want to do this and provide them with the required receipt so that they can connect me to my house.
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  • #30 11288940
    KuReK93
    Level 17  
    michal180183 wrote:
    Mr. KuReK, I am not offended by anyone, but these malicious actions are unnecessary. I just wanted to find out if the connection of the individual switchgear elements is correct. And if I threw a three-phase RCD from this switchgear and secured each of the 4 circuits with separate RCDs, would it be better?
    How is each of the circuits? This question is understandable in average, but let's say I figured it was about each phase. It would certainly be more convenient for the use of the installation (the current leakage on one phase would turn off only the selected phase, not all of them), but would it be better? Let's assume that, for example, somewhere in the kitchen you have a leakage of electricity (the reason is not important) the differential will disconnect the entire phase, not just the kitchen, otherwise, for rooms where there is a special risk of electric shock (wet, such as a bathroom), highly sensitive differentials with the operating current are used. up to 30mA.
    Apart from all that, how do you want to put 4 differentials into this box? And for what 4? Because as I wrote earlier that how do I guess for each of the phases one and the fourth?
    KuReK93 wrote:
    Once again, the colleague will delete the moderator's entry and the colleague will go on "vacation". [Kkas12]

    Where did I delete the moderator's entry? I am asking for indication, correction and understanding, I express repentance and I promise that I will not be anymore. And only one small question, maybe stupid, but please do not take it personally, where in the regulations there is a provision that you cannot delete moderator entries? Because somehow I can't read myself.


    Moderated By Akrzy74:

    8. If you make a mistake and the moderator gives you instructions, follow them immediately. Failure to follow the moderators' instructions will result in removing the topic to the trash and receiving a reminder or warning.

Topic summary

The discussion revolves around the electrical installation of a detached house using a TN-CS system. The author seeks validation for their proposed setup, which includes a main switch, phase indicator lights, a 40A 30mA residual current circuit breaker (RCCB), various fuses (B10/B16), and grounding components. Experts advise against using a four-pole RCD for multiple circuits and emphasize the importance of separate RCDs for socket and high-risk circuits, such as those in bathrooms and kitchens. Concerns are raised about the uneven load on phases, the necessity of additional surge protection, and the overall safety and functionality of the installation. The author acknowledges their limited experience and plans to have a licensed electrician verify the installation.
Summary generated by the language model.
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