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Old 01-08-2007, 10:22 PM's Avatar is offline Moderator
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If your shop is wired w/ 12ga, go ahead and upgrade your breakers to 20A. If not, run a dedicated 12ga circuit to your welder and get some half-height breakers (two breakers duplexed into a single breaker body) and run 15A to your existing circuits and 20A for the welder. Make that a 10ga wire and 30A breaker for an unforseen new tool.
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