Well for what its worth,I am a master welder,20 yrs experence.With proper beveling and proper heat and wire settings you can wld up a cage with 110v welders.You have to pay close attention to duty cycle.Over heating welder causes loss of penetration and hurts welder.Also make sure you have a dedicated circuit with proper braker.I welded at a couple dirt tracks with there fluxcore lincoln and never had any failures.220v is the best way to go and a minimum of 180 amps.