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It would have to be a 30 amp breaker to use the full power of the welder. I'd say go with the 30A. The general rule is that your planned load should only be 80% of the circuit capacity. That means a 30A circuit should have a maximum load of of (30*0.8) = 24A. With the 30 amp breaker you must have at least #10 wires feeding the circuit.

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โˆ™ 2005-03-28 10:55:59
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Q: Will a 20A 240V breaker be sufficient for a 240V 22A input welder or do you need to go to a 30A?
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