I am trying to hook up an oven at my dad's house. He took out the old one ,but does not remember what wires he messed with.So here it goes. The oven has 3 wires and a ground. The tag reads''240/120. 1 phase. So I know I have 2 hots 1 grd. and a neutral. Out of the wall there is A box with 3 wires and a ground coming out of it. blk,red,white,grd. No power from anything,but the white.