Don Murray wrote:
208V is a common service voltage. You still have 2 120V hot legs to
neutral. You find these in apartment buildings, shopping centers, office
buildings, strip malls and warehouses, but it would be very rare to have
one in a single family dwelling.

I used to live in such a building. 54 units, each with two phases run
into the apartment (each line of apartments got a different pair of
phases).