I am doing a small kitchen renovation was called in at the last minute. when the house was originally build there was a cook top and a wall oven.

Apparently the wall oven quit working and a past owner took out the original cook top and put in a free standing range. now the customer has bought a new wall oven and a cook top. I have not seen the name plate rating on the wall oven yet, but the cook top is rated at 7.9 kw . the existing feeder is # 10 and I have not found the splice JB yet for where they tapped off for the wall oven and cook top.

the circuit feed this system is 40 amps on # 8 romex from the panel. My question is will this suffice for the new cooking equipment.

I understand the question mikish posted for the free standing range, but i will have to look for this system set up in the code, The customer assumed that we could use the existing set up And I know i will have to find the nameplate rating g on the wall oven. Has anyone else ran into this.