My house has the main breaker provided and installed by the electric company, that's regulated to 15A, and a panel that only has an old nonstandard 16A breaker.
I live in Portugal (I believe is same standards as EU). I am upgrading the electrical panel and I currently have a 40A/0,03A differential and a main 40A breaker, then for distribution after those I have one 32A, four 16A and one 10A breakers.
But I have seen a few schematics without the main breaker (in my case the 40A). Do I really need the 40A breaker on my installation considering that I have the company main breaker just before the panel?
Note that the set up is meant to handle upgrades to the contracted power to at least 28A.