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Old 12-19-2009, 06:14 PM
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In tools/equipment such as welders, the maximum duty cycle is defined as the percentage of time in a
10 minute period that it can be operated continuously before overheating.
source wikipedia

20% duty cycle means that 2 min welding, 8 min cooling. do not turn the welder off, the fan is doing the cooling.
your 110v unit is 20% duty cycle. the 220v unit is duty cycle rated at 30%, 3 min welding, 7 min cooling.
keep what you have. not worth the $$$ to get 1 min more of welding in 10 min.
seriously, i have welder 20 min with my 20% welder @ heat 3 of 4

your welder welds 5/16" steel in a single pass.
your welder will weld thicker material in multiple passes.
you could theoretically weld 2" material with your welder. it would take for ever but you could do it...

Last edited by ogre; 12-19-2009 at 06:20 PM.
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