Most miners certainly do, for sure. It's just that 240V split phase is not the same as 240V single wire used in the rest of the world. I guess that's why the PDU is a thing. Geez, that's... Annoyingly sketchy.
Discussion
You're already beyond my expertise hahaha I didn't know theres a diff between 240v single wire and split phase. I don't actually even know what that means.
I just figured you just install a beefier breaker in the main breaker box and run a lower gauge wire which can handle 240v.
American electricity is special, kinda like how we measure everything.