ᐅ Old Building Unknown Outlet – High Voltage Socket for Oven?

If I were the original poster, I would be really curious to know what kind of nailed antenna cable is running to those electrical outlets :-(

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This is a running busbar. They are still nailed in place today.

If this is the only supply line to this double socket outlet, the distribution box probably does not have any special significance.

There is also a black cable on the right that goes to the Terko.

True. So much is missed on such a smartphone display...

Thank you very much for your answers,
Yes, there is indeed a thicker additional cable running to the Terko junction box mentioned.
What is such a "non-polarized" junction box used for, or what could I need something like this for?
I assume I will have to renew the wiring anyway.

Kojak9 schrieb:
What was this "non-polarizable" socket used for, or what could I need something like this for?

For anything related to low voltage, as mycraft described. It could have been many things. A specially protected circuit, a voltage different from the standard mains supply, for example a 110V (110V) network, or a direct current supply.
Something where it was important to ensure that only the intended devices could be connected.

As I said, it couldn’t have been used for high voltage or similar, so the original purpose probably no longer applies. If you want to know more, you would need an electrician to investigate what type of cable this is and what it supplies.