ᐅ Strange Issue with Voltage / Lighting

Hi everyone,

We bought a 110-year-old semi-detached house. It’s still in really good condition, although of course we had to do quite a bit of renovation.

I have a strange issue with a lamp cable. When we moved in, there was a lamp in the hallway that worked perfectly fine. A normal incandescent bulb running on 230V. During the renovation, we removed all the lamps and replaced them. This particular lamp was disconnected for several weeks.

When we tried to reconnect it, we found that only 12V were present at the socket, so the lamp no longer works there. At the associated light switch, there are even just 6V.

I can’t figure out what caused this. We’re completely puzzled. The only electrical work I did nearby was cutting the doorbell cable, as we have a battery-powered digital doorbell (Ring). But that can’t be related, can it?

I understand remote diagnosis is quite difficult. But maybe someone has a tip for me. If not, I might have the option to connect something that works with 12V?

Best regards and thanks
Marius

I would get a measuring device and check it yourself, or ask your electrician. It shouldn’t cost much. There are 12V lights, but I wouldn’t connect anything there. There is a fault somewhere, and in the worst case, your house could catch fire if 230V suddenly appears.

You didn’t drill any holes?

That could definitely be related to the doorbell. When I read 6V/12V, I immediately thought of the doorbell transformer. You should either measure it or investigate further. If you’re not a professional, please have an electrician take a look.

What year is the entire electrical system from?

At how many locations can the hallway light be switched on (how many light switches are there for it)?