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[MasterKwan]

If you look at welder tech, it certainly looks like the Chinese are ahead of the game. Every up and coming nation started by imitating. We did it, the Japanese did it and the Chinese had to do it to get things going. Then once that period is over, innovation starts. Japan was once known as a nation...

[MasterKwan]

The manual should list max current at 230 volts. This is on the primary side of the transformer so I'd size the wire to the rated input current. To me 14ga feels a bit small but I haven't looked at the manual. I'm thinking it's at least 30 amps....

[MasterKwan]

It's a pretty simple board because it doesn't control voltage. Looks like it's just for controlling wire speed and the spool gun.

If I was buying used, I'd lean toward a simpler machine like the 230 here. If I'm buying new, I'd probably get one with the features I want and just depend on...