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I have a 145 amp 240volt Century Mig Welder that's about 15 years old. It hasn't been used that much over the years, but was used quite a bit lately on a go kart project. It performed pretty well until the end of the go kart project. I have always had to adjust the wire speed higher than the manual says to to get it to weld properly. Now I can't seem to get the wire speed adjusted properly. The arc or wire speed seems to be unstable. It gets worse as you weld and the welder heats up. It trips on its internal protector much sooner than it used to also. Would this be a transformer problem, gun problem, wire feed problem, or wire problem. It seemed to happen when I changed to a new roll of wire and a brand I have never used before (from Home Depot). I am using Argon/CO2 as a shielding gas. Thanks, Tim

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Posted on Jan 02, 2017

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  • 760 Answers

SOURCE: have a dayton 85 amp

You didn't indicate what thickness of metal you were welding or what type of weld wire you were using (other than size)
Less expensive welders will have voltage present, with trigger off. Shield gas= positive nozzle, flux core= neg nozzle.
These machines are probably abojut 15% duty cycle. That means you can only weld a few min. As far as tripping breaker on max setting, that is probably not unusual. If you read the label on the welder, I would imagine the max line current is over 20amps. This should be on at least a 20A seperate circuit. If I remember correctly, the FLA amps on this machine is over 20a
Check input voltage and be sure you're not experiencing a voltage drop. A small voltage drop will create a dramatic amperage increase on your supply circuit.

Posted on Aug 18, 2010

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agent91
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SOURCE: clarke 135 -gas/no gas- mig

Any welding supply or a welder with bottle exchange should carry all the gauges and gas you need. There has to be one near you. We live in a cow town here and we have a bunch of them. Check it out, hope this helps.

Posted on Dec 20, 2010

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