[arghwhat]

In Denmark, the only places without triphase power are some very old apartments in inner Copenhagen. To be fair, some of those apartments predate US independence by a hundred years. Those buildings do have triphasic power, but had a silly scheme where each apartment got two random phases.

All houses have triphasic power (usually 35A per phase, sometimes 63A), and all apartment buildings with electrics from the last 2-3 decades provide triphasic power to each apartment as well.

Our ovens and cooktops expect triphasic power, with a two-phase downgraded configuration for backup.

Same for Sweden I believe.