Breaker size for 255EXT?

[Seshan]

I have mine hooked up to a 30A breaker and have never blown it yet I have welded at 220A to 250A for 3 to at least 4 minutes the odd time. A 40A can't hurt.

Perfect, thanks. I'll get a 40 amp just to be safe.

lcome, Seshan! Are you getting a 255?!

Yes I'm planning on it