Switchgear Connection Types: DY (Wire) vs LY (Cord) Cables & Compliance for Single-Family Homes

Hello, and I have a question for more experienced professionals. The problem is whether the connections inside the switchgear are made with the DY (wire) or LY (cord) cable, the question is whether there are specific regulations when and what kind of cable we use. It is known that the rope is easier and more aesthetic, but recently I heard the opinion of an experienced fitter that it does not comply with the regulations, but he was not able to specify exactly which ones. I would like to mention that these are typical switchgears in single-family houses, etc. installations.

I think that the wire is more aesthetic and faster. There are no rules that distinguish this. It is known that when the cable is exposed to movement (door), we give a rope.

I don't know anything about the regulation governing a wire or a string. The cable is easier to install in the switchgear (it does not resist unfolding), it can be bent many times as mentioned by a colleague above. The wire is cheaper well conducted it can look nice in a switchboard. Only wire for installation in buildings, as few cords as possible. The line works better at higher frequencies (I've read something somewhere else). In our case (50 Hz) it made no difference. Control cabinets again only in ropes, but there is also no recipe for it (I think) that is easier )

As long as I live, I have not yet seen a switchgear connected by a cord. After all, such a switchgear would be a big chaos. The front of the DY is aesthetically and clearly legible, if the wires are routed evenly, the angles of the wire bends will be preserved.

tragi wrote:

As long as I live, I have not yet seen a switchgear connected by a cord. After all, such a switchgear would be a big chaos. The front of the DY is aesthetically and clearly legible, if the wires are routed evenly, the angles of the wire bends will be preserved.

You probably live for a very short time, or you are just starting your adventure with "electrics"

Photo from the first page found on Google: Link

tragi wrote:

As long as I live, I have not yet seen a switchgear connected by a cord. After all, such a switchgear would be a big chaos.

Buddy, have you seen the control cabinets of industrial devices? These are such switchgears, only sometimes and 500 times larger. And there are links everywhere ... And there is no mess, and it can't even be ...
I am giving this as a curiosity.

PS. Oh crap, we wrote together

The switchgear in the picture is quite nice, but I think it would look even better if made of wire. The wire is used to make elegant bends and there is no need for bushings. It is definitely faster.
As for the control cabinets, the cables in the comb troughs reign supreme - a convenient way to modify / expand.

The control cabinets are connected by a rope, but I meant home switchgears that are packed into small boxes and they are usually tight there. And the example from the photo of a colleague Łukasz-O is very transparent and everything is well connected, but has a colleague seen such a super switchgear in practice many times? Maybe my adventure with "electrics" does not last too long, but almost 20 years and I have seen a lot during that time. Anyway, I have never connected any switchgear in a home installation with a cable.

Only in the automation cabinets there are Smile perforated trays everywhere and cables stick out from them. The version for the brave is as my colleague Łukasz wrote, but it is impossible to do without titles.

Due to its flexibility, the line is easier to guide, you need to be able to handle the wire, bend it well, etc. It's all a matter of practice.

I make separate wires in my homes, I put all power on rails so that the garlands do not hang under the fuses.

It is worth remembering not to cross the phase conductors with N and PE, so that they do not touch each other. In the event of any failure, the cables can get burnt and a mess will be created. One side of L, the other side of N and PE. I am starting another construction project in 2 weeks. After assembling the switchboard, I will allow myself to post Smile's photos


I merged the posts. [Luke]


Welcome back.

I found something like that in my X archive
I was commissioned to expand by 1 circuit Due to financial reasons, the client did not agree to the tidying up. His answer was:
"Dear dear, nobody sees it anyway, because it is under that white cover, and besides it looks what it looks like, the most important thing is that it works ..."

Hello . If it is done correctly, it does not matter whether we do it with a rope or a wire. The rope is more convenient to attach with large cross-sections, and you can organize it very nicely with the help of fastening bands. And for ElektroMax - do not write about what you have no idea, because the lines are used at high frequencies, but they are not ordinary installation lines, but with INSULATED ones! individual strands in the bundle. Greetings.

I saw enough switchgears and connected enough switchboards with my own hands, at a time when the DY cables were so hard and clumsy that when one switchboard was connected, bubbles appeared on my fingers, and buying an insulation stripper in the country was only a dream. And they all work so far, so don't worry, buddy, about my competences.

And such examples as in the photo above are very common.

Hello.

Well, show your switchboards, buddy hand barrow

Gentlemen, this discussion was basically nonsense. It is reminiscent of the superiority of Christmas over Easter. It all depends on the switchgear and application. In addition, if someone is experienced, he will do a masterpiece, and if not - see the photo in a friend's post Miwhoo . Here it does not matter whether he does it with a rope or a wire ;)

PS I always "make" large switchgears with a rope.

Hello . In my opinion, it does not matter whether we lay a line or a wire. Everyone arranges them as conveniently as possible, as long as they have the right sections. I use both methods.

1 and 3-phase rails, possibly a cable.

For larger cross-sections, I definitely recommend the line - you will sweat less.
Bending the 120mm? cable in a short distance in several places becomes practically impossible and you can lay the line much easier.
Another disadvantage of wire connections is connecting several with different cross-sections to the same terminal in the apparatus. The effect is that the one with the smallest cross-section is usually loose and with the lines we pack everything into one sleeve and that's it. Of course, this can be prevented by bending it in half, but sometimes it is not possible because all of them will not fit.
In addition, attention should be paid to the more frequent fact of tearing devices, and in particular ZUGs from rails by wire, if we bend them incorrectly.

I did not think that this topic would cause such a stir, but thank you very much for the information. The reason why I mentioned this topic is that currently I got an order for a correction after an "electrician with permissions". I do not like to judge someone's work, but what I saw on the spot called for vengeance to heaven. The job was fucked from A to Z. below I add a photo showing the switchgear made by him I replaced the entire switchgear with a larger one, but unfortunately the wires were cut too short so I would have to cut them off, I came up with the idea to make a kind of crossbar on one rail using ZUGÓW, there I will bring all the receiving circuits made with YDYp cables and from I will make connections to cameras with cables from the cable. (I hope that my reasoning is in line with good electro-fitting practice) I will post a photo when I'm finished. Sorry for the quality of the photo but I took it with a bad phone, if someone has another way to solve this knot, I will be grateful for hints and suggestions. Regards

They do both

When it comes to housing construction, I mostly see DY and when it comes to control cabinets it is LY (regardless of whether it is DC or AC). Anyway, for LY I would use ferrules crimped with a crimper, then it looks more aesthetic.

piotr_krak wrote:

Anyway, for LY I would use ferrules crimped with a crimper, then it looks more aesthetic.

This is perhaps an understatement. I consider simply connecting the bare line to be highly unreliable and unacceptable.

Hello.

Example - a switchgear in a garage:

el_pp a work worthy of a master but an investor you probably let go with the bags But seriously, this is what I'm going to try to put together. Installation is a bit less complicated, but it is also a challenge for a beginner. The topic could be closed, but as we are talking (writing) about aesthetics and performance, I have another question from the pool of good practice, namely the approach to flush-mounted cables and not only to the switchgear, I met with three schools:
1 light wires come in from above and sockets and other receivers. from down,
2 all wires on one side
3 neutral conductor approach.
I know that the type of selected switchgear may also decide about it, I personally prefer switchgears in which I can adjust the position of the mounting rails (SCHNEIDER, Moeller, etc.) are much more expensive, but if the investor gives me a free hand, I definitely choose them, it is easier to keep them in order.

Hello.

We have an issue - "connections inside the switchgear", so I am giving examples.

Different garage, different switchgear / fragment



I have a lot of it - different types of switchboards.
The layout is so convenient that connections can be configured in various ways, without disturbing the drainage pipes.

PS. I can also post a buble

Ele-pp, do not think that I am picking on the details, but I am interested in the issue of the numbering of individual wires and circuits, I can not figure out how you do it, it is your invention or it results from the switchgear design, I personally did not meet with the electrical installation project. a single-family house where the switchgear would be so precisely drawn (maybe I haven't seen a good project yet) and in fact, the projects only show the symbol of this installation element schematically. On the one hand, it is good because it gives the installer a free hand, but on the other hand, it requires the implementation of post-execution documentation.

In good switchgear schemes, everything is numbered and marked.

Strips with ZUGs are marked with consecutive numbers X1, X2, X3 etc. each ZUG in a given strip has its own number. 1, 2, 3 etc. The devices in the switchboard also have their numbering: F1, F2, F3 ... Q1, Q2, Q3 ... etc.

By placing the cable from F1 to ZUG 3 in the X2 strip at the ends, you describe:
- at ZUG - F1
- with the X2.3 camera

Of course, this is only an example because there are certainly many ways of numbering wires.

Hello.

artudud wrote:

On the one hand, it is good because it gives the installer a free hand, but on the other hand, it requires the implementation of post-execution documentation.

As-built documentation is always done by me.

I will add a photo of an ordinary RB for construction As I once heard, an electrician, not a baker ...


Added after 9 [minutes]:

Still something for the collection

As I wrote, so I did. The investor is happy, that too, the installation works without reservations, it's a pity that I did not have time to take a photo, and now I somehow feel stupid to load someone onto the property just to take a photo. Anyway, thank you to everyone for contributing to the topic. As it turns out, the electrician is not such a strict science. I close the topic