That link isn't really a source for residential 3-phase power.
Almost every electrical network is 3 phase distribution, the matter under debate is if you bring every phase to each house, or if a phase reaches every third house.
Anecdotally I have never seen an electrical panel without three phases, but when I went looking it was like trying to find a source for the fact the sky is blue.
Almost every electrical network is 3 phase distribution, the matter under debate is if you bring every phase to each house, or if a phase reaches every third house.
Anecdotally I have never seen an electrical panel without three phases, but when I went looking it was like trying to find a source for the fact the sky is blue.