Installation diagram TN C on TN CS, surge arrester, residual current device

Question

Hello, I assume a post that friendly forum users will check the installation diagram for me. The installation in a residential house will be modernized and the measuring system will be sent to the outer wall and the main switchboard will be inside the building. The conversion protection is...

mrst · Accepted Answer

Eliminate this bridge between the N and PE busbars. In addition, introduce the PEN directly to the PE strip and from there to the output of the limiter.

Miniax · Answer

PE enters on the RCD and N: o comes out Why do you want to N disconnect at the disc?

0ceanborn · Answer

A terribly confused and unreadable drawing.

Besides what mrst wrote, basically everything is fine.
The induction switch does not have to be 4-pole, but the surge arrester is as good as it is.

Quote:
There is also a farm building with a four-wire and two-wire system, so TN C must stay there

As for the outbuilding, it would be best to do a new TT or TN-S installation.
Provide grounding and equipotential bonding.
Then, however, the power must be released through the differential.
I do not know what the installation looks like there, but in such buildings it is often done in trays, which makes it easier to replace the cables.
Even if it is necessary to carve it into the wall or make a new one in the channels, the aesthetic considerations are probably not of great importance in the utility room.
This is where the difference can be important.

ferguson123456 · Answer

I missed this bridge because my concept changed while drawing the diagram. Thanks.
Due to the fact that I wanted to show the wiring in more detail, the diagram did not come out as clearly as I wanted.
I still have a question and doubt about the advice with connecting a surge arrester

Quote:
In addition, introduce the PEN directly to the PE strip and from there to the output of the limiter.

If I want to include it in the system in a place where the network is of the TN C type, is it not properly connected? Photo below to support my way. Anyway, if you wanted to connect it in a TN CS system, you would have to use a 4-pole one

Installation diagram TN C on TN CS, surge arrester, residual current device

Installation diagram TN C on TN CS, surge arrester, residual current device

https://obrazki.elektroda.pl/3104982000_1337883029.jpg

michalekk1 · Answer

The question is, why do you want to protect the metallic wire connected to the same to what the overvoltage is short-circuited? :>

Anonymous · Answer

Probably to burn the record. You don't know well, buddy. How good if one RCD is for everything. You can see that switchgears were designed by a layman with no experience. And where is GSU - unnecessary? Someone has to professionally redesign the switchgear - yes from scratch. For a large facility, a project made by a licensed person would be useful. Bronek Ps. Induction hobs are powered from 2 phases like two single-phase receivers.

ferguson123456 · Answer

Good The RDC is not connected properly. As for the quantity, I know but I do not change. RCD should be connected after PEN is divided into PE and N. I corrected the diagram, is it okay?

https://obrazki.elektroda.pl/8550519000_1337888255.jpg

Yes, I didn't read with the album. The website says that it needs a voltage of 400 V, but 2 phases are enough - user manual.

Bronek22 wrote:
And where is GSU - unnecessary? Someone has to professionally redesign the switchgear - yes from scratch.
For a large facility, a project made by a licensed person would be useful.

And what will be included in the CSO, what will be connected to it? How do you know what the installations are made of and what are they in the building?
This is the best way to rent a company and you will pay for it. Why would I assume a post as a panacea for everything is hiring a person with permissions. The forum would not exist and the facility is not big.

Łukasz-O · Answer

Yes, but the forum is for electricians, buddy, not people without or with poor knowledge. Therefore, please do not be surprised by such a reaction.

Paweł0381 · Answer

And your colleague knows what GSU is and what tasks it is supposed to fulfill? And if a colleague wants to do it without the help of at least a licensed person. Because ZE will chase a colleague for the scheme itself, without talking about the lack of permissions, What is the construction law in Poland for? My friend knows that everything is fine until something bad happens. What will the colleague support in court with advice from the Forum? And through the forum, a colleague will not perform the installation or project without permission and knowledge. Mr. Google is not knowledge but opinions of many people.

ferguson123456 · Answer

I will not enter into sterile discussions with the Omniscient. It's easy to find logical errors in your arguments, e.g.

Łukasz-O wrote:
Yes, but the forum is for electricians, buddy, not people without or with poor knowledge. Therefore, please do not be surprised by such a reaction.

Who are these electricians who must use the forum? This is not a place for specialists to gain knowledge. I will not write more.

Paweł0381 wrote:
And if a colleague wants to do it without the help of at least a licensed person.

After all, I wrote that the measuring system is transferred by a person with permissions, otherwise the Power Plant will not receive it. I will have the opportunity to talk to a specialist but sooner but I prefer to get advice from several sources.

I repeat the question about the correctness of the schema.

Łukasz-O · Answer

A typical layman's approach. Electricity is a very extensive field. You think it's just knowing how to connect the contact. Little knowledge little problem, big knowledge, answer yourself ... This is the case in every field, buddy.

Akrzy74 · Answer

This is not a pattern - this is the first thing. Second - when it comes to correctness, it is the lack of it.

Miniax · Answer

My friend, author, you complain that there is no help, that the adversaries are of a low level, and you cannot even answer the question I asked in the first post. You use cameras and connections, but you don't really know what purpose it is supposed to serve.
3-phase RCD for single-phase circuits?
Disconnecting N on the board?

It's okay, but justify why this way. Here, unfortunately, circuit theory bows.

elpapiotr · Answer

Or maybe some more helpful justification why the cameras are powered from above, sometimes from below?

ferguson123456 · Answer

I wrote back but the censorship worked. To make the diagram clearer. Where did I write that? I used 3 phase because I thought the induction was powered from 3 phases. Forum information: A 3-pole switch is used in a TN-C, TN-CS network on a 4-0 wire section of the network, a 4-0 pole switch is used in a TN-S, TN-CS network (5-0 wire section of a network), TT, IT. In these networks there can also be a 3-pole switch, if there is no N conductor (e.g. machine with terminals: L1, L2, L3, PE) After the differential switch, we put 4-0 pole switches - N connection with PE causes the differential switch to trip.

elpapiotr · Answer

Hello.

But we do not use 4-way switch disconnectors. It's such a professional bias.

The information from the forum is not always reliable and justified - after all, various people write, not always electricians.

ferguson123456 · Answer

I will correct the diagram in line with Miniax's comments

Łukasz-O · Answer

This is a load of rubbish. Please provide a link to this work.

Anonymous · Answer

I recommend that you look for the forum of extreme misers and crooks. Friend, who are you going to fancy - so that you at least have knowledge! Don't pour the putty, you can afford a house and you can't afford the project? It's a putty for naive suckers. Bronek

ferguson123456 · Answer

I corrected the check please. No comment

Łukasz-O · Answer

I thought you were here with us It is strange that no one reacted and wrote about the risk of unnecessary disconnection of the N track in three-phase circuits. And I do not see a grounded GSU in the diagram. Shockingly few districts for a single-family house - these are the 70s? Oven, dishwasher, washing machine, gn. in the kitchen. We already have 4 And where else are the rooms, lighting and other ...

ferguson123456 · Answer

Yes, there are currently two circuits for the whole house of aluminum wires and it has been in operation for 40 years. I did not increase the number of circuits after removing the induction hob. My main goal is to check the correct connection of the switching station. Increasing the number of circuits is not a problem later.

Łukasz-O · Answer

First, write what these switches are for. Again, the unprofessional approach to electrical issues bows. The switchgear connection itself is not enough. Since you make installations, it should be made according to the standards and art of installation, not the way you think, because it works. Do not expect us to approve your ideas.

ferguson123456 · Answer

I found some time, the diagram is finished, what do forum users think about it?

elpapiotr · Answer

They think these 8A circuit breakers will be hard to find.

ferguson123456 · Answer

Yes, my mistake is 6A. But now, after thinking about it, I think the induction is wrongly wired. However, I should have given a separate 3f RCD and 3f 20A miniature circuit breaker for induction and oven. What do you think?

Gregory_bg · Answer

You don't have to for permanently installed devices.

ferguson123456 · Answer

I want to use RCDs on all circuits, please check the diagram

mrst · Answer

The main switch in the switching station is still missing. You have socket and lighting circuits on one circuit, so when there is leakage in any of the sockets, you will not have lighting either

Installation diagram TN C on TN CS, surge arrester, residual current device

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