You shouldnt be. Making a fuse for AC is simple, since the voltage will be 0 in every 20ms. DC fuses are bigger, more expensive.
That might only be because of personal experience. I've been bitten a few times when younger, 400V dc have me a couple of bad burns bad I still preferred that than the feeling of the 380V ac going through my arm.
I know, been a dumb kid.
I'm actually lucky for the moment, I have several high voltage (>1000V) high current switches and breakers.
But I totally agree, when it comes to mechanical contacts, DC got a big drawback.
No. Maybe you can run the lighting of the house from DC, but that's it.
I would suggest a 48V battery system. Since telecom systems work at this voltage, you should be able to find equipment for this voltage.
Not to contradict you but I actually found that a great amount of appliances are happy with DC. I successfully ran PC's, TV's, VHS and DVD players, phone chargers, and printers from a 16 x 12V lead acid battery bank. Even found some CFL bulbs that worked. Other resistive loads would work fine with little modifications (use of semiconductor instead of mechanical switches).
I'm obviously not saying that it is a good idea. Otherwise, I wouldn't be asking the question.
Are there any other industry standards then 48V? I know that where my father work, they have installations that run on pure DC, the mains is turned into 100V dc (50 x 2V lead acid batteries banks) and the plant runs from that because they cannot afford to even brown out. But that might only be a one off, not a standard.
Also, when it comes to the house wiring, is it legal to have a 48V (or other, eventually higher) DC circuit? I can't seem to find any clear text or law about that.
It would be easy to modify many appliances to run from 48V dc but again, what is legal? Most tv's, pc's, ... only use 3.3, 5, 12, 24, 32v internally.
Making a fuse for AC is simple, since the voltage will be 0 in every 20ms.
You must have slow electricity in Europe.
I'm actually in Australia but same story, we run on 50Hz.
But there is actually a zero cross every 10ms, not 20ms. One going up, one going down