Articles about 3-Wire Oven Wiring
How to Wire an Electric Range – The electrical circuit for this oven will need to be tested to be sure that the ground connection is actually present. The installation manual should be double checked to be certain that all of the wiring connection points are correct.
There is no existing wiring for a wall oven so what is required for a 220 volt electric wall oven? How to Wire 220 Volt Circuit for a Wall Oven.