Breaker amperage

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I have a welder machine running from a 220 v and it has a breaker of 30 amps. It was fine when I used the welding machine on dc positive but one I went to dc negative the breaker jumped so I was wondering if I can replace the 30 amp breaker for something  like a 50 amp breaker to supply enough power to my equipment

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    Yes you can, however when you increase the amps you should replace the wire as well.