However the schematic for this welder indicates the 3-phase does not go directly to a 3-phase transformer. Instead it is immediately rectified into a 2-wire supply that goes to the welding power circuitry.
2 3-phase legs are sent to the electronics circuitry. (The power cord is wired to these 2 legs.)
My concerns are
- powering 2 3-phase legs with 2 leg split phase is going to not produce the "smooth" DC 3-phase legs would
- smoothing capacitors after the rectification may be over taxed
- the 2-wire welding circuitry may not function properly due to 180* instead of 120* phase difference