What is the minimum size breaker for this welder???????

I see your point now. I had it hooked up when I first got it home and it burned good on the few test passes I made. I think I may have had a 50 amp breaker on it but I couldn't remember for sure. I have had this welder for a long time an mostly use my wire welder. I need to hook this one up to make 4 passes to weld the spring perches on my 8 3/4, then it will most likely sit there unused for a while again. It was free and had everthing with it so it doesn't bother me much that it just sits there. But it is there when I need it.
It is a strange looking welder. Never seen one like it but I'm not well rehearsed in the old stick welding world. I'm kind of a spoiled mig welder. Lol