Identifying Phase Colors and Order for L1, L2, L3 in 3-Phase Power Cable & Switch Cabinet

Question

Hello I'm looking for but can't find :( Or maybe from the beginning Usually I get a five-core 3-phase power cable in the closet in colors Blue is N, Green-Yellow is PE Gray, Brown and Black Usually there is a strip to which I have to connect these cables, but in what order. What color do...

elpapiotr · Answer

I guess ... there isn't. But you can always pick up the spinning top and check the order.

.Jack · Answer

There is a standard regarding the colors of the insulation conductors of working conductors. But in what order the colors of the veins should be, I haven't met, probably there is nothing like the colleague mentioned above. He himself uses and observed in various objects are: L1 - black L2 - brown L3 - gray That is, from the darkest color to the lightest. Someone will, pick up a spinning top, and you have to switch phases. If there is to be order, the exchange is best done at the terminals of the receiver. It's good that a colleague is watching over the colors of the wires, which proves a professional approach and a decent, aesthetically performed work.

immortalis81 · Answer

Hello Dear Colleagues. In Germany, this is regulated by a standard which attributes: L1 - brown L2 - black L3 - gray

.Jack · Answer

Come on, German accuracy and order and their internal DIN VDE standards

jann111 · Answer

I also use such colors, but I have friends who use the colors of my friend .Jack I always meet gray as the last one.

TWK · Answer

I usually do. I justified it as follows: if we have a single-phase circuit, the phase conductor is brown, so L1 is brown. Then black as L2, because in the 4x ... cables it is brown and black, and gray at the tail end (L3). But it's nice to know Germany regulates it, and I have some justification for my principle other than bad theory. However, I meet quite often in facilities with the method described by Col. Jack. If there is such a standard in the facility, I try to keep it! Sometimes the order indicator is not enough - if you want to evenly distribute the load and not just check the direction of rotation.

elpapiotr · Answer

Well, there are two of us. Poles and they do in German. Not nice :D Added after 4 [minutes]: The sequence indicator is good for an entire facility where 3-phase machines are rearranged and plugged into other 400V outlets. Setting all sockets is very useful in the operation of receivers. And we can always compensate for the distribution of loads by re-switching 1- and 2-phase devices.

JWitek · Answer

I connect it so that when looking at the target end of the cable, the phase wires are arranged as in a three-phase socket. I just count clockwise from the PE conductor (not worrying about the fact that sometimes N will fall between the phase conductors)

kkas12 · Answer

Maybe a colleague provide more details of this regulation?

immortalis81 · Answer

DIN VDE 0293-308 Harmonization document HD308 S2

elpapiotr · Answer

Hello. We do PN-HD 308 S2 , and somehow they don't serve, which the color of the cable wires corresponds to the given phase.

kkas12 · Answer

In Ireland I also encountered this sequence. I don't know if and if it is standardized, but

Anonymous · Answer

IEC division 514, but alphanumeric markings are more important. After all, an electrician can be color-blind .. :) Accurate phase recognition is important in, for example, connecting transformers for parallel operation, while in the switchboard it is probably enough to mark the sequence in a clockwise direction, it can be, for example, L2, L3, L1 and the colors gray, brown, black. It can only be a synonym of good practice connecting the phases in the sequence which determines the direction of rotation in a clockwise direction and marking in a progressive manner, as can be seen adopted in Europe with the symbols L1, L2, L3 and the colors Br, Cz, Sz

kkas12 · Answer

And what is Maciek 514.5.1?

immortalis81 · Answer

Hello, The Harmonisierungs document HD 308 S2 was approved by CENELEC on May 1, 2001. In this document, CENELEC members commit themselves, by 2006-04-01 at the latest, to standardize the labeling of veins in new installations. Germany fulfilled its commitment in 2003. issuing your own standard VDE DIN 0293 Teil 308. At the time of the creation of HD 308 S2, Poland was not a member of CENELEC.

Anonymous · Answer

Yes exactly, this is BS7671 *, but in IEC it will be 60617, electrical symbols * in line with the above friend's post, probably issued in 2004.

elpapiotr · Answer

Oh - the brown symbol, the black symbol, and the gray symbol. All clear.

Anonymous · Answer

Is this symbol not meaningful enough for a friend?

elpapiotr · Answer

Of course. A regular red octagon with a white border. You can see.

SeRgEy1989 · Answer

In Poland, there is no standard regulating the colors of how everyone should arrange it at their own discretion. People of the older 80-90 date still use the colors of black, brown and gray. Among my friends, from what I can see, most people use black- brown- gray- why? A habit from school. So when my father is looking at my nest, for example, my father always complains about the colors that our young ones are overwhelmed. And so, out of curiosity, I will ask how colleagues connect the emergency luminaire on a 4-core cable, what color is the neutral wire? Gray with a blue T-shirt at each end?

lukaszpol26 · Answer

You can always use a 5x wire ... and a small 1 wire spare, and it's blue

jann111 · Answer

Or perform the installation with shielded single-core cables, then we have as many colors as a rainbow. [/ tex]

Anonymous · Answer

Here, any electrician will do it. Gray turns blue, brown means continuous power, black controls normal operation. Since no one has doubts what the color means in single-phase power supply, it seems natural to give the brown the mark L1

Łukasz-O · Answer

A chattering cloth All the assumptions of the color of the wires are reflected in the single-phase outlets, eg YDY connected to different phases.

JWitek · Answer

If you have two black and one brown. And it is often so.

Łukasz-O · Answer

And again the talking cloth ... YDY has black or brown phase conductors. I haven't seen gray yet. As if he did not combine, you need to do shaft on the object in single-phase circuits :D The question is why this whole discussion is for

Anonymous · Answer

The justification is in the table I have included As for three-phase circuits, I found the crowning justification for such a color sequence, brown, black, gray. On my way to work, I watched the color of the dog poop on the lawn change. The only meaning I see is unification, but nowadays fewer and fewer people pay attention to order.

zbich70 · Answer

But what is the point of following phase markings where it has absolutely no meaning? Only where pedantry begins to have the characteristics of a disease.

Identifying Phase Colors and Order for L1, L2, L3 in 3-Phase Power Cable & Switch Cabinet

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