[korhojoa]

You can move more power per conductor with three conductors than with two.

As a sidenote, my apartment has a 3x63A main fuse. Three-phase is everywhere here. Really convenient for ev charging too.

[UltraSane]

Delivering 100 amps over 240 volt is not an issue.

[worthless-trash]

And welding .. nice when you have to use it.