In the WoWa 230V without securing external socket?

I have been reading various articles here for a few weeks and can already collect quite a lot of information. Now we have bought a Bürstner Club 380 BJ ’87 this week (small but fine ). When cleaning up and cleaning up a lot of us, that one of the previous owners has connected a multiple socket directly to the outer can (from inside) without switching a fuse in between. At the socket he has plugged in a normal battery charger (for 12V or 6V) to s My question: shouldn’t the multiple socket in the WoWa be extra secure? On the CP the whole WoWa is secure at the distributor, but certainly can’t hurt the fuse?I’m still going to the electrics anyway, because a small converter is supposed to be in, so that I can save the battery (are only on the CP, never self-sufficient).Thank you for the answers Alexander