Almost got hurt today. PSA

It's strange. It didn't even trip the small breaker on the TIG let alone trip the 50 amp on the wall?

The TIG was still running when I turned it off.

My big question is why a machine that can draw 40 amps came with a 20 amp cord and plug?

It was a Lincoln square wave, about a year old.

Even after the cord blew out the 50 amp breaker was still hot.