I still highly doubt that the average house will use anything 3 phase, the stove you describing is probably business grade, now if it is a matter of "quantity" then it makes perfect sense, here if the house has more than a single floor, the utility company would run 3 phase to it, each floor gets 1 phase and neutral, say 6 flats each two share a single phase, but still, inside that house you can not just plug and play 3-phase appliances, you would need to run the other two phases directly from the main panel.

I understand that things are different across the globe, so ya, to each country its own design.


Correct, the naming is rather confusing to many people, it is hard to explain that 2 wires are a single phase, it is also hard to explain why would a clamp meter read zero when you get the two wires together, electricity isn't all that simple after all.