[Shuie]

I have a 4 wire 240V dryer connection in my garage on a dedicated 30A GFI. This is a dedicated circuit I had wired up in my garage for another project. At no time is it used for a dryer or sharing a load with anything else.

If I can do it safely, I want to use this receptacle to power a 230V welding machine. The machine I'm looking is the convertible 120V/230V Miller that operates on a 25A max input according to the spec sheet. Can I make an adapter cord from a Home Depot 10/4 30A dryer cord using only the prongs for the (2) hots and the ground that plugs into the wall and a female 230V welder type plug on the other end to plug the machine into?

Hobart actually makes an adapter cord like this that fits a 4-wire 50A receptacle. I know there isn't a lot of extra room on a 30A circuit for a 25A device, but do you think could run this machine off of the 30A circuit with an adapter cord? Should I expect a lot of nuisance breaker trips? Worse? The machine would probably operate in 120V most of the time if I buy the convertible Miller, but I'd really like to be able to step up to 230V if I needed to.

TIA