Good afternoon, I am trying to ascertain whether a smart switch/dimmer will be compatible with my electrical installation and if so how to connect it correctly. This is my installation, which is typical: brown cable - phase L, blue cable - neutral N, green-yellow cable - protective PE . and...

This is probably a two-key switch. If so, then unfortunately you only have a phase there (possibly on the brown wire) and then you feed this phase to one consumer via the blue wire and to the other consumer via the green-yellow wire. The latter is unacceptable as the green/yellow wire is only used for protection. From this it follows that you have no N in the box and your circuit breaker needs it.

. In this case you have: brown cable - phase L blue cable - phase L' green-yellow cable - phase L'

If you have the possibility to draw the N and PE wire to this box then you can connect this novelty but only to one circuit as you cannot use this yellow-green wire.

Yes, you understand correctly. Is the wild installation... hmm. The wire from the switch to the junction box should be replaced.

Thank you very much for your help So I understand that in my case it is L - phase L1 - to one lamp L2 to the other lamp I am missing N and PE Do I understand this correctly? So that it is a rather wild installation, substandard and not very safe? Is there any way around this, some kind of patent, other than changing the whole installation? Thank you in advance

And shouldn't it be like this? Probably some American invention with this L1. .

And what don't you like about your own almost good drawing (no protective to the N, L ,L`-square point).

Sorry, the author confused me by writing that his installation is typical. I only now enlarged the picture and saw what was done there.

Thank you very much for your help, I hope it will also be useful to someone else, because there will probably be more and more such gadgets vs Polish installations Best regards

How to connect the Koogeek Dimmer Switch to an installation with L, N, PE?

chadrain 876 9

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#1 17563586 16 Nov 2018 13:52

chadrain chadrain

Level 2

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Post #1
17563586 16 Nov 2018 13:52

Good afternoon,
I am trying to ascertain whether a smart switch/dimmer will be compatible with my electrical installation and if so how to connect it correctly.

This is my installation, which is typical:

brown cable - phase L,
blue cable - neutral N,
green-yellow cable - protective PE

IMG_646...JPG Download (1014.53 kB) .

https://mobidick.pl/sklep/koogeek-dimmer-switch/

and such a switch has a diagram:

08-2.jpg Download (52.58 kB) .

Is this compatible?

How to connect this L1 ?

Thank you very much in advance!
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#2 17563601 16 Nov 2018 14:01

ta_tar ta_tar

Level 41

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Post #2
17563601 16 Nov 2018 14:01

This is probably a two-key switch. If so, then unfortunately you only have a phase there (possibly on the brown wire) and then you feed this phase to one consumer via the blue wire and to the other consumer via the green-yellow wire. The latter is unacceptable as the green/yellow wire is only used for protection. From this it follows that you have no N in the box and your circuit breaker needs it.
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#3 17563631 16 Nov 2018 14:19

mawerix123 mawerix123

Level 39

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Post #3
17563631 16 Nov 2018 14:19

chadrain wrote:
This is my installation, which is typical:

brown cable - phase L,
blue cable - neutral N,
green-yellow cable - protective PE
.

In this case you have:

brown cable - phase L
blue cable - phase L'
green-yellow cable - phase L'
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#4 17563704 16 Nov 2018 14:57

chadrain chadrain

Level 2

» | Topic author Helpful post? (0)

Post #4
17563704 16 Nov 2018 14:57

Thank you very much for your help

So I understand that in my case it is

L - phase

L1 - to one lamp
L2 to the other lamp

I am missing N
and PE

Do I understand this correctly?

So that it is a rather wild installation, substandard and not very safe?

Is there any way around this, some kind of patent, other than changing the whole installation?

Thank you in advance
Helpful post

#5 17563715 16 Nov 2018 15:05

ta_tar ta_tar

Level 41

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Post #5
17563715 16 Nov 2018 15:05

If you have the possibility to draw the N and PE wire to this box then you can connect this novelty but only to one circuit as you cannot use this yellow-green wire.
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#6 17563719 16 Nov 2018 15:08

mawerix123 mawerix123

Level 39

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Post #6
17563719 16 Nov 2018 15:08

Yes, you understand correctly.
Is the wild installation... hmm.
The wire from the switch to the junction box should be replaced.
#7 17563850 16 Nov 2018 16:18

Waski85 Waski85

Level 13

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Post #7
17563850 16 Nov 2018 16:18

And shouldn't it be like this? Probably some American invention with this L1.

.
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#8 17563873 16 Nov 2018 16:36

ta_tar ta_tar

Level 41

» | Helpful post? (0)

Post #8
17563873 16 Nov 2018 16:36

And what don't you like about your own almost good drawing (no protective to the N, L ,L`-square point).
#9 17563884 16 Nov 2018 16:45

Waski85 Waski85

Level 13

» | Helpful post? (0)

Post #9
17563884 16 Nov 2018 16:45

Sorry, the author confused me by writing that his installation is "typical". I only now enlarged the picture and saw what was done there.
#10 17563920 16 Nov 2018 17:04

chadrain chadrain

Level 2

» | Topic author Helpful post? (0)

Post #10
17563920 16 Nov 2018 17:04

Thank you very much for your help,
I hope it will also be useful to someone else, because there will probably be more and more such gadgets vs Polish installations
Best regards
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Topic summary

The discussion addresses the compatibility and wiring of the Koogeek Dimmer Switch with a typical electrical installation featuring brown (phase L), blue (neutral N), and green-yellow (protective earth PE) cables. It is clarified that the existing installation lacks a proper neutral wire in the switch box, as the blue and green-yellow wires are incorrectly used as phase conductors, which is unsafe and non-standard. The green-yellow wire must not be used as a phase conductor since it is reserved for protective earth. The Koogeek Dimmer Switch requires a neutral connection for proper operation, which is missing in this setup. The L1 terminal on the switch corresponds to one lamp load, while L2 would be for another, but without a neutral, the device cannot be correctly connected. The consensus is that the current installation is substandard and potentially hazardous. The recommended solution is to run a neutral and protective earth wire to the switch box to enable safe and compliant connection of the smart dimmer. No workaround or "patent" solution is advised other than upgrading the wiring to meet electrical safety standards.
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How to connect the Koogeek Dimmer Switch to an installation with L, N, PE?

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