A 200 amp Transformer based welding power supply, without power correction capacitors will draw at most 70 amps of 220 single phase.
Use an 70 or 80 amp breaker, on a NEMA 6-50 receptacle and plug.
6-50 is a 50 amp welders plug.My Syncrowave 250DX has a 90 amp breaker on it, but it has a max output of 310 amps.