Please advise. The electrician laid 20m of cooper from the WLZ to the ZE box.

thomyk wrote:

Wlz should be yky 4x10 but it is unnecessary cost only. Now use blue and green together as N.

Does the colleague understand what he wrote?
Because as far as I'm concerned it's pure nonsense.

I do not have time like a colleague to edit posts for days.


I meant that it is an unnecessary expense to arrange 5x10, but probably such had on sale installers.

As for 4 field disconnects I would advise against it. I had such a case at one customer to whom I had to add 1 fuse. For safety, I lowered the disconnector and at the moment of switching on, suddenly there was a bang in the rooms. It turned out that surge protectors in power strips for RTV and computer equipment went. It is likely that in the disconnector the N terminal switched on late in relation to the phases, and due to the uneven load on the phases, there must have been a voltage of more than 275 volts on the sockets. Secondly, in order for the foundation grounding to make sense and fulfill its role for many years, the reinforcement in the foundations would have to be welded or at least bolted with screw clamps. Concrete causes corrosion of the reinforcement and thus higher contact resistances on the bars. Twisting with wires as reinforcers do has nothing to do with secure electrical connections. This is one way to reduce the cost of installation using a "natural ground", provided that it is done with head. Bedrock for the time being is probably the most reliable ground.

jaceksz78 wrote:

Secondly, in order for the foundation grounding to make sense and perform its role for many years, the reinforcement in the foundations would have to be welded or at least bolted together with screw clamps.

This is why artificial foundation grounding should rather be done, i.e., before pouring the footings, lay with the reinforcement a cooper or wire of the appropriate cross-section.
A cooper laid in the ground is certainly no better than a foundation ground, even a natural one.

jaceksz78 wrote:

Concrete causes corrosion of reinforcement

From when?

jaceksz78 wrote:

The twisting of wires as done by armorers has nothing to do with certain electrical connections

This is why the execution of the foundation grounding is entrusted to an electrician, not to armorers "by the way".
The electrician is the person who should be the first to arrive at the start of construction and the last to leave it

It would be nice
This is not in Polish reality.

thomyk wrote:

This is not in the Polish reality.

And in which?

thomyk wrote:

You let yourself have it that way. Well, and then there is the lack of knowledge and ignorance of regulations in investors.


Added after 1 [minute]:

GeoCa wrote:

4. The electrical installation company has done the internal installations. , in about a week they will connect the main switchboard in the house /Hager 2x12 for a house of 100m2/.

I have a larger one in the garage .

thomyk wrote:

That would be nice.
This is not in the Polish reality.

And who plugs in temporary electricity in C tariff?

After all, you find out before everything if and how you will be supplied with electricity.

It is the electricians who give bodies and kierbuds.


Secondly, concrete is alkaline and clears corrosion, not causes it.

Strumien swiadomosci swia wrote:

And who plugs in temporary electricity on the C tariff?

Is there a C tariff inquiry somewhere in this thread?

Strumien swiadomosci swia wrote:

And who plugs in temporary electricity in C tariff?

As I wrote in the post deleted by the "moderator" https://www.elektroda.pl/rtvforum/topic3412971.html of course the power company connects. There is a widely discussed thread on the mason forum based on which topics on the electrode were created where pseudo-electricians whip up foam instead of asking professionals.

Moderated By retrofood:

You are consistent in advertising mason, so I will too. Take a break for a while. Section 3.1.10 of the regulations, two weeks of vacation.

.