30-50/250 receptacle wiring without a neutral wire for TIG welder.

[vdotmatrix]

I am always answering my own posts here. 240v doesnt require a neutral, two hot and a bare ground. Thats it.

[vdotmatrix]

I am running a 40A, 220v circuit for my TIG weld in the garage.

I pulled a permit and was putting together a shopping list but I am stuck at the receptacle and how it is wired.

I found (2) receptacles that only have (3) lugs two for HOT and one for the ground. NO NEUTRAL.

I expected to find (4) lugs, red, black for HOT , white for neutral and green for ground. The following images are wired that way. Should I find a receptacle with the 4 lugs and run 8-3 romex or just run 8-2 romex.

I don't want to cheap out or wire anything to save a buck....thanks in advance.