a typical welder plug for up to 250a would be a 30a. Welders are way over
rated, in addition to the fact that you will rarely (if ever) run it wide
open. I'd put in a 30a plug with 10ga wire.

steve


wrote in message
ps.com...
I am considering a 230v mig welder and need to add a circuit. The
input amperage for the welder is 20a. Should I install a 20 a breaker
or use a slighly larger capcity like 25 or 30 amps?