Connecting erbette. Different electricians have different approaches

Hi,
I am asking for advice on connecting a switchgear (erbette) in a tin garage on a building plot.
The situation is as follows:
-Tauron put a box for me at the border of the plot.
-20 m further I have a tin garage (storage space for the construction period)
-I would like to have electricity connected during construction. It will not be a construction current but a target one. After the house is built, the switchgear will be made at home on the same terms, but the final one. Currently, the plot is undeveloped, there is nothing on it except a metal garage.
- I would like to securely and financially reasonably attach this erbet to the Tauron box. I plan to install the following:
Equipment:
residual current circuit breaker 40A 0.03A 3 phase - 1 piece
- 193 3-phase B 25A overcurrent fuse - 1 pc
(for securing power sockets 32/5 + 16/5)
191- single-phase fuse B 16A - 1 pc
(to secure 2 x 230v sockets) in a plastic housing.

cable to the Tauron box.
I talked to electricians who would connect it to me if I do the job on my side. And here my doubts arise because every electrician has a different opinion.
Some say that there must be a 5x10 CU cable, others to buy 5x16 Alu, others that a 4x4 CU is enough, the last one said 5x6 CU. It would be best to buy the target cable and bury it in the ground, but unfortunately at this stage it is impossible because I do not know what the target length of the network will be.
The installation will be used in the construction of a single-family house, i.e. a concrete mixer (power), some saws, drills, etc. will be connected.

The second point is grounding. And here opinions are divided. Some experts say that we will ground the installation in the Tauron box, Others that I have to stick a 3m earth pin, others say that due to the fact that the box is plastic, I do not have to ground it because it makes no sense.

Please advise me on how to deal with these matters. I don't want to spend too much money unnecessarily if it is not necessary.

I am enclosing photos of the Tauron box and papers from Tauron

Call me and I will explain it to you once and for all, because Wrocław is a beautiful city, but there are lots of crooks and amateurs of electric art here.

Generally, the selection of protections "from the spigot". The choice of cable puts a smile on my face. I don't even comment further.

You can not do RB switchgear for PLN 100. And in another 20 you won't check if it's safe.

Added after 3 [minutes]:

By the way, Tauron should be impaled by their connectors. The hole for the RNT is good for 5x2.5mm, not the house power cables.

Read the standard on powering construction sites.
quick search and processing: TRAINING SEMINAR on March 23, 2011 POWER SUPPLY OF THE CONSTRUCTION SITE

Quote:

For my amateur eye, buying a 5x16 YKY is an unnecessary expense, but maybe I am wrong.

Unfortunately, doctors are respected in the profession and electricians are not. Have you ever asked if one tablet is enough instead of two, because you feel sorry for the money?

Grounding the split point at your place, min 10mm2 copper or 25mm2 4x cable, surge arresters, differential,
3m pin may not be enough for 10 ohms, 10kA breakers,
I edited [TM]

pol102 wrote:

Generally, the selection of protections "from the spigot". The choice of cable puts a smile on my face.

How should it be with these cables?
Is there something wrong with security?

Added after 8 [minutes]:

KonradGatek wrote:

Quote:

For my amateur eye, buying a 5x16 YKY is an unnecessary expense, but maybe I am wrong.

Unfortunately, doctors are respected in the profession and electricians are not. Have you ever asked if one tablet is enough instead of two, because you feel sorry for the money?

I don't feel sorry for the money for a safe installation. That's why I called "specialists" asking what to buy. I don't know anything about it, that's why I wanted someone to explain it to me professionally. however, everyone has an opinion on this, and this is where my doubts arise. If there are different opinions among electricians, how do I, as a green person, deal with the topic or even choose the person to whom I will commission it?

Piotrmia wrote:

- 193 3-phase B 25A overcurrent fuse - 1 pc
(for securing 32/5 + power sockets 16/5 )

For the 16A socket you use a maximum 16A protection!
Use YKY 4X10mm? or YAKY 4X16mm? cable
The grounding in the test box is owned by ZE and you have nothing to do with it.
You insert the earth electrode at the RB-tce and ground the PE track, not necessarily at the PEN division.

750kV wrote:

You insert the earth electrode at the RB-tce and ground the PE track

In my time, the hoop was thrown into the cable trench and on the subject.

IMO, the author teaches us how to do it himself. He has read something and he thinks he will save 700 zlotys. I am not going to count the cable for free, shoot whether the IPZ is enough or not, and assemble the RB so that it is safe. What I am reading is trying to cultivate a bricklayer.

pol102 wrote:

IMO, the author teaches us how to do it himself. He has read something and he thinks he will save 700 zlotys. I am not going to count the cable for free, shoot whether the IPZ is enough or not, and assemble the RB so that it is safe. What I am reading is trying to cultivate a bricklayer.

I'm not trying to trick anyone. I just want to buy a cable and install the switchboard. I want to outsource the rest. If you can recommend someone from WRO or do it yourself, I'll be happy to pay.

The choice of security measures was made by the author in relation to the amount of space in Pawbolowa pseudo RB.

You do not understand. How do I know that you have buried the cable deep enough, on a ballast without stones, that the foil is where it should be? That you didn't accidentally smash it with a stone? There is no place for a lime tree here. YAKXS does not cost millions, but it would be a shame to dig twice, because I wonder who will you go to if it turns out that after switching on the voltage, there will be an earth fault in one of the phases?

If you want to do blind, YAKXS 4x25mm for this LZtek and ZUGi. RB? The rest of the security in the RG depends on the IPZ.

pol102 wrote:

The choice of security measures was made by the author in relation to the amount of space in Pawbolowa pseudo RB.

You do not understand. How do I know that you have buried the cable deep enough, on a ballast without stones, that the foil is where it should be? That you didn't accidentally smash it with a stone? There is no place for a lime tree here. YAKXS does not cost millions, but it would be a shame to dig twice, because I wonder who will you go to if it turns out that after switching on the voltage, there will be an earth fault in one of the phases?

If you want to do blind, YAKXS 4x25mm for this LZtek and ZUG. RB? The rest of the security in the RG depends on the IPZ.

then what should I do according to you? I am a layman I do not know myself. I just want it done.

Piotrmia wrote:

then what should I do according to you? I am a layman I do not know myself. I just want it done.

Col. got a hint in post 2 and 3.
The work should be carried out by an electrician or a colleague himself, these works should be carried out under the supervision of an electrician.
I close the topic

Piotrmia wrote:

It will not be a construction current but a target one.

So you are afraid that if the RB-tka is located outside the garage, the tariff may be changed to "construction".
However, there may be a problem in the form of light-hearted performers in the future, which I have also been working on.

Oh yeah well. 80 cm trench and the rest as in the book. Ballast, cable, ballast, 20-30cm of native soil, blue foil and the rest of the soil to the ditch.
The cable reserve in coils should also be buried in the ground in front of the garage, where you will insert the cable end to connect the PB-cable.
I propose an earth electrode at the garage to connect it to the garage structures and the PE rail in the RB-frame.
Measurement of resistance and reporting to the Power Plant about readiness. Later SWZ measurement.
YAKY 4x25 or 35 cable. However, a real electrician is needed to connect the cable and of course measurements.
A layman may have a problem with the correct connection of such sections.

Remember about the foundation earth electrode and also about culverts which can never be too many, because there are always more external circuits than you initially plan.

How can I ground it to the foundation if I don't even have a foundation pit yet? It's a bare field for now.

What question to ask an electrician on the phone to know that he knows and is a good specialist? There are a lot of announcements. Who to look for?

Do not ground to the foundation, but make a foundation earth electrode in a new building
Everyone is ok on the phone, but rather skip the announcements.
Maybe ask your colleague pol102 at PW

Piotrmia wrote:

How can I ground it to the foundation if I don't even have a foundation pit yet? It's a bare field for now.

When is the foundation earth electrode performed? Has the foundations already been made? No, therefore, the foundation earth electrode is performed when the foundations are being made, at this stage it is advisable to have an electrician before pouring the foundations. Read Col. Post # 11 Exactly?

Piotrmia wrote:

There are a lot of announcements. Who to look for?

Search for a company with insurance (see post # 2)
Contract: scope of work, remuneration, warranty, etc.

I dont have questions. None. What else are we supposed to do?