Old electrical installation - can the age be determined?

Hello everyone,

I have here (an admittedly bad) picture of the fuse box in the old building that we might renovate (parents).
My question:
Can one tell at a glance whether the installation is somewhat up to date or whether nothing has been done here for 50 years?

Thank you very much and best regards
Rüdiger

You can see two RCDs. A 16A fuse will not be installed in front of old flat cables either. Generally, there are quite a few more circuit breakers, it also looks separated by sockets and lighting, maybe even by room? Definitely not 50 years old.

The box initially says absolutely nothing about the rest. You can gladly replace it separately if something is wrong. However, the pipes in the walls can still be 50 years old.

The box itself doesn't say anything about the rest. You can gladly replace it separately if something is wrong. However, the wiring in the walls can still be 50 years old.

Of course it does say something.
The RCD requirement in new buildings(!) started sometime in the 80s. It is quite certain that behind the box it will at least be wired with three cores.
Nowadays you wouldn’t put a 16A circuit breaker on just any old wiring. The number of circuit breakers also suggests that much more wiring was installed than would have been common 50 years ago...

Then my father’s house was avant-garde, built in 1970, with a fuse box identical to the one in the photo – with 3 fat fuses, RCD and 16A circuit breakers, one for each room as well as the garden, three each for stove/oven, sauna and (!) washing machine.

The Fi's only mean that the box was at some point redone, because then the obligation applies. Or they were necessary from the start.

So they don't say anything. However, yes, it is very certain that three phases are present.

16A LS not? You must know the electrician guild poorly. 16A is what is lying around and installed by default. Even though in most installations (yes even in new buildings) 13A would be the logical and safer and calculated limit (for some circuits). Well, and the quantity really has no significance. Because it can also partly be an expansion of the system in year XY.

So here too, fishing in troubled waters.

Without further pictures and information, one cannot draw any definitive conclusions here.