[SECProto]

Many places in North America use electric for almost everything - heating, cooling, hot water. 240V 100A used to be common (24kW) but people would run up against that limit, so most new houses have been 200A for a while (48kW). I don't know where that person is that a 400A service is the most common, but I've never seen it outside of wasteful mcmansions (4000+ sqft with associated excessive heating and cooling requirements, hot tub, sauna, heated pool, every room gets a 20A breaker or two, etc.)

[wcfields]

I installed 400a service on my 1100sqft home. I was getting solar installed, and my panel had to be updated anyway from an old fire-trap Zinsco. I asked the company how much more to do a 400a service and they said $500 more so I went for it planning on eventually being able to charge 2 EV’s at max amperage in the future.