Quote Originally Posted by Justinta View Post
Thank you! I think I'll just install a small disconnect with a 40 amp breaker. Hard wired to the plasma cutter cart and with a larger cord running to the 50 amp receptacle. I'm only doing this because each location that I use the cutter already has a 50 amp receptacle protected at 50 amps, and I don't want to swap out breakers or install additional receptacles.

Once again thank you Mark.
That will work just fine, but the breaker in your panel is to protect your wiring from the panel, so the 40 amp is not required. The unit has protection in the switch as well. But if it does not cost a lot for you it will not hurt. Extra safety but another point on contact the can fail later on.