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Following up from the electrical things, as I was saved by the mandatory per-building grounding electrode, good protective bonding and the sensible regulations all the way from the 60s requireing 3-wire system in kitchens and other potentially wet spaces.
Crambled in the dark to metal oven hood to get some light last night, and as I turned the knob, I felt the worst jolt in my life, a large spark dropped on the oven and the kitchen went dark again.
The thing is, we started to require RCD's at all as late as late 90s I think. So this apt too only had a trusty old ceramic D-fusible, which I blew several of. The old electrician's adage is: they are designed to only protect the building, not the people.
For whatever reason, even today the local electrical code has a special exception allowing just breakers / fusibles and no RCD's for refrigerators and freezers. It's a vestige from a much longer list of appliances, that much I know - washers for example used to be counterintuitively exempt for a long time, because many models at the time had so strong leakage currents, a norman 30 mA RCD would have false tripped in every cycle.
As those were good old times when we didn't put RCD's on washing machines, instead we put this little stricker saying "do not touch the appliance while wet" (girls attention!).
Sometimes another sticker would say: "warning, outlets in separate phases - 400 V !". This, because good old timely power hungry washer and it's pal dryer running together would trip a typical 16 A fast breaker, so instead of bringing 3x 4 mm² (20 A, which is rare) or 3x 6, (25 A), one would just bring a more common 4x 1.5 (2x 10 A) or 4x 2.5 (2x 16 A) to be safe, and use shared neutral on the cable leading into the washroom. Single pole breakers allowed, as no appliance is connected to both circuits.