The MIG 135 is rated at 3/16" single pass capacity. That is using all 135 Amps using a Flux Core Wire. The duty cycle (weld time during a 10 min period) is 20% at 88 Amps. If you are welding at full capacity the duty cycle would diminish significantly. I would approximate about 5% to 10% duty cycle at the top end. That would be one minute of arc on time during a 10 min period. Now, that does not mean that the thermal overload is going to kick in right at one minute. It really varies. It depends on the air temp the machine is operating in. It also depends on how clean all the internal components are and what if anything is restricting the airflow into the unit.
While multiple passes could be used to weld up to 1/2", I would not recommend this unit for that purpose.
answered 3 years, 9 months ago
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