I have a situation in which the floor corridor circuit breaker trips before my home one. The corridor one is what appears to be a D20, so type D, 20 A.
The flat breaker is what appears to be a type A, 25 A, but I could have researched that wrong.
From what I researched, D Types are supposed to be used for heavy industrial use, and are supposed to trip for 10-20x the power while A-types are supposed to be no more than 2 times?
Other point which is surprising is that I don't know how I would generate 230*20*10 = 46 kW at home. From my experience, it has been tripping in cases in which I have an oven, stove and kettle running on top of the baseline, so something around 8.5-10 kW tops.
So I wonder what is going on and if I read those labels correctly. And on top of that, I worry there is something wrong in the installation that would cause a surge big enough to make the D20 trip.