220v 30 amp wire size?Advertisement
What wire gauge should I use with a 30 amp breaker for a 220V welder? up vote 7 down vote favorite. ... Longer runs may require an upgrade of wire size. In your case, use at least 10 copper for your welder regardless how far it is from the breaker panel. - read more
Best Answer: 10 is allowed by the NEC. If you go further than 150 feet. you might want to go with #8. ... Generally #10 copper. But also if that happens to be a 30 amp range (which I have in a mother-in-law apt) the code still specifies the minimum size circuit for ranges to be 40 amp ... - read more
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