Hello I have a utility room in which there is a can with wires, exactly like this: Black - phase Blue - phase Brown - phase Yellow green - zero I would like to connect the simplest lamp to have lighting in the room, I have a lamp with two wires, is it enough if I connect one phase to it and a...

Buddy, you should call an electrician because you are completely unaware. If this is a junction box installation, then. The phase conductor reaches the connector, it should go to the lamp after connecting it through the box. The lamp should be connected (in the box) to this switched phase, to the neutral conductor and to the protective conductor (all in the above box). Added after 2 [minutes]: Colleagues, how do you know that this blue is actually a phase, maybe it's just the invention of the author?

It's very weird. How did you say that? No no. receiver (your lamp must be connected to a phase and neutral, additionally use a PE wire (depending on the design of the lamp). Added after 1 [minutes]: What do you mean ? Because from what you see you write nonsense.

If the guy checked that he had black, blue and brown phases, where is the problem?

In the fact that you do not know what you are writing, and the author is also not very sure.

So how ? From the lamp switch I release two cables, one phase (L) and one yellow-green (Protective), into the box, I also release two cables from the lamp with the same markings, and what should the connection in the box look like now? Added after 1 [minutes]:

Buddy from the can you give a brown phase wire to the switch, then from it to the lamp. You connect yellow-green directly with the blue lamp.

Since the author has 3 phases in a four-wire cable, he must connect as he wrote in the past, as they did when there were no 5-wire cable, the blue one was for the phase, and the yellow and green one was PEN, i.e. PE and neutral.

Want to not always be able to, and reproducing the mistakes made so far is not the best way to get out of the situation. The installation must be seen by a good electrician and he will decide if, where and how this lamp can be connected in this situation. For now, nobody has stammered about existing protections, circuits, so nothing is known here. I close, the topic cannot be solved remotely.

Connecting a 2-Wire Lamp to a 4-Wire Cable: Utility Room Lighting with Black, Blue, Brown Phases

LucaO 21477 9

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#1 16602147 22 Jul 2017 16:04

LucaO LucaO

Level 7

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Post #1
16602147 22 Jul 2017 16:04

Hello
I have a utility room in which there is a can with wires, exactly like this:
Black - phase
Blue - phase
Brown - phase
Yellow green - zero

I would like to connect the simplest lamp to have lighting in the room, I have a lamp with two wires, is it enough if I connect one phase to it and a yellow - green wire?
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#2 16602179 22 Jul 2017 16:33

daro31ie daro31ie

Automation specialist

» | Helpful post? (+1)

Post #2
16602179 22 Jul 2017 16:33

LucaO wrote:
Hello
I have a utility room in which there is a can with wires, exactly like this:
Black - phase
Blue - phase
Brown - phase
Yellow green - zero

I would like to connect the simplest lamp to have lighting in the room, I have a lamp with two wires, is it enough if I connect one phase to it and a yellow - green wire?

Exactly.

greetings

Moderated By retrofood:
Any new installation? So I appreciate the hurried training of new staff with the warning. point 3.1.11 of the regulations.
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#3 16602180 22 Jul 2017 16:35

kokapetyl kokapetyl

Level 43

» | Helpful post? (+1)

Post #3
16602180 22 Jul 2017 16:35

LucaO wrote:
Black - phase
Blue - phase
Brown - phase

It's very weird. How did you say that?

LucaO wrote:
is it enough if I connect one phase to it and a yellow - green wire?

No no. receiver (your lamp must be connected to a phase and neutral, additionally use a PE wire (depending on the design of the lamp).

Added after 1 [minutes]:

daro31ie wrote:
Exactly.

greetings

What do you mean ? Because from what you see you write nonsense.
#4 16602191 22 Jul 2017 16:37

daro31ie daro31ie

Automation specialist

» | Helpful post? (0)

Post #4
16602191 22 Jul 2017 16:37

If the guy checked that he had black, blue and brown phases, where is the problem?
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#5 16602197 22 Jul 2017 16:40

kokapetyl kokapetyl

Level 43

» | Helpful post? (0)

Post #5
16602197 22 Jul 2017 16:40

daro31ie wrote:
so where is the problem?

In the fact that you do not know what you are writing, and the author is also not very sure.
#6 16602204 22 Jul 2017 16:46

LucaO LucaO

Level 7

» | Topic author Helpful post? (+1)

Post #6
16602204 22 Jul 2017 16:46

So how ?
From the lamp switch I release two cables, one phase (L) and one yellow-green (Protective), into the box, I also release two cables from the lamp with the same markings, and what should the connection in the box look like now?

Added after 1 [minutes]:

LucaO wrote:
So how ?
From the lamp switch I release two cables, one phase (L) and one yellow-green (Protective), into the box, I also release two cables from the lamp with the same markings, and what should the connection in the box look like now?

I will add that there is no Neutral cable in the installation, there are 4 wires
3 x phase (L)
1 x Protective (Pe)
#7 16602208 22 Jul 2017 16:48

daro31ie daro31ie

Automation specialist

» | Helpful post? (0)

Post #7
16602208 22 Jul 2017 16:48

LucaO wrote:
So how ?
From the lamp switch I release two cables, one phase (L) and one yellow-green (Protective), into the box, I also release two cables from the lamp with the same markings, and what should the connection in the box look like now?

Buddy from the can you give a brown phase wire to the switch, then from it to the lamp.
You connect yellow-green directly with the blue lamp.
#8 16602209 22 Jul 2017 16:48

rafcio_21 rafcio_21

Level 29

» | Helpful post? (+1)

Post #8
16602209 22 Jul 2017 16:48

Since the author has 3 phases in a four-wire cable, he must connect as he wrote in the past, as they did when there were no 5-wire cable, the blue one was for the phase, and the yellow and green one was PEN, i.e. PE and neutral.
Helpful post

#9 16602222 22 Jul 2017 16:58

kokapetyl kokapetyl

Level 43

» | Helpful post? (+2)

Helpful post
Post #9
16602222 22 Jul 2017 16:58

LucaO wrote:
From the lamp switch I release two cables, one phase (L) and one yellow-green (Protective), into the box,

Buddy, you should call an electrician because you are completely unaware.
If this is a junction box installation, then.
The phase conductor reaches the connector, it should go to the lamp after connecting it through the box.
The lamp should be connected (in the box) to this switched phase, to the neutral conductor and to the protective conductor (all in the above box).

Added after 2 [minutes]:

Colleagues, how do you know that this blue is actually a "phase", maybe it's just the invention of the author?
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#10 16602257 22 Jul 2017 17:24

retrofood retrofood

VIP Meritorious for electroda.pl

» | Helpful post? (0)

Post #10
16602257 22 Jul 2017 17:24

LucaO wrote:
Hello
I have a utility room in which there is a can with wires, exactly like this:
Black - phase
Blue - phase
Brown - phase
Yellow green - zero

I would like to connect the simplest lamp to have lighting in the room, I have a lamp with two wires, is it enough if I connect one phase to it and a yellow - green wire?

Want to not always be able to, and reproducing the mistakes made so far is not the best way to get out of the situation. The installation must be seen by a good electrician and he will decide if, where and how this lamp can be connected in this situation. For now, nobody has stammered about existing protections, circuits, so nothing is known here. I close, the topic cannot be solved remotely.
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Topic summary

The discussion revolves around connecting a 2-wire lamp to a 4-wire cable in a utility room setup, where the wires are identified as black (phase), blue (phase), brown (phase), and yellow-green (neutral). The initial query seeks confirmation on whether connecting one phase wire and the yellow-green wire is sufficient for the lamp. Responses highlight the necessity of connecting the lamp to a phase and neutral, emphasizing the importance of proper wiring practices. Some participants express confusion over the identification of the blue wire as a phase and recommend consulting a qualified electrician for safe installation, given the potential risks involved in electrical work.
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Connecting a 2-Wire Lamp to a 4-Wire Cable: Utility Room Lighting with Black, Blue, Brown Phases

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