Connecting LED bathroom mirror, gray cable?

Good evening,

I want to connect the new bathroom mirror at home. The bathroom mirror naturally also includes a socket which must also be connected.
Three colors were present in the bathroom mirror and the existing cables, which were properly installed by an electrician and are color-identical. On the house side, besides the brown cable, there is also a gray cable which also indicates electricity when I measure it. Where must this be connected?

Picture 1 (Left side leads to LED mirror, right side to the house)

Thank you for your help

Your image 2 shows a bridge from contact 1 to 2, in case only one phase is available. However, this causes the light switch to also switch off the socket in the mirror.

Your electrician has provided you with two phases so that you can connect the socket and light separately. This way the socket does not go off when the light is turned off. Connect gray to 2. If necessary, this is reversed, then swap brown and gray again if the light has continuous power and the socket should be switchable on and off via the light switch.

Hey,

thanks for your reply. It worked with one mirror cabinet. With the second one, I now have different colors on the house side. How does it look with that?
I plugged the light blue one into the blue and the others into brown/black (both ways). The light worked each time, but the socket did not...

Thanks again!

You need the bridge between 1 and 2 as described in the instructions in this case. Then omit the purple one (attach a Wago terminal or cut off and insulate).