She came back in and said just buy an adapter for the plug! This is the code now Is what he said.
Then he doesn't understand either the code or the wiring involved...
If you're running a dryer, it is the code that you need four wires - two hots, neutral, and ground.
For a welder, plasma, compressor, or other 240V equipment with no 120V components then all you need is three wires - two hots and a ground.