Dryer machine in Spain

by Herbert Villagomez
(Madrid, spain)

I recently moved to Spain with my american Dryer and the power here is 220v, the same as in UE but nobody understand why the plug is so big and why has four wires. 1 is red, 1 is black, 1 is white and 1 is green. That part everyone understand but here you have only three. 1 es hot, 1 is negative and 1 is ground. How do I connect these wires to make it work? Is american three phase compare with 1 Phase here? Please, explain