Is there anything in the taps rules that would allow this? There is a 40 amp 8-3 nm-b wire run to a single oven unit. The oven only has a nameplate rating of 4800 kw. The microwave is directly above the oven. The builder was suppose to install a oven/microwave combo unit and then changed his mind and didn't say anything. Before I fish in a new circuit and just wanted to make sure I can't just grab power from the over sized oven wire somehow.