I am replacing a wall oven. The new oven has 4 wires (black, white, red, bare). The wall has 3 wires (black, white, bare). The directions show how to wire to a 3 wire, but their diagram shows a black, white and red at the wall. I read that 240 doesn’t have a neutral. Is the white wire from the wall live as well as the black? If so, I am guessing black to black, red from oven to white at wall and white and bare from the oven to bare at the wall. Any help would be appreciated.