I am currently doing a wall oven and cooktop, they want 20 amp services. I am running out of breaker slots, and really hate to use my last two, to wire 2 items in same area when my old range ran off one 240 40 amp breaker. I do fully understand that you can not direct wire two 20 amp 240 volt appliances to a 40 amp circuit since it would not kick until it hit 40 amps. My question, is there a junction box or something that can be placed at the oven to split this on a circuit. Im looking for the cheapest way that would meet code. From what Im thinking I can run the 40 amp service to a 40 amp circuit breaker panel, then do the 2 20 amp dual pole breakers, just hard to get that panel somewhere near the oven etc to meet its requirement of a junction box in area. Kinda pricey to do breaker to a breaker, and not sure this is allowed. Kinda curious if this is done normally or any ideas welcome.

Hope this makes sense. Double, thru the wall box. Accesible on either side of a wall. Switch installed on both sides to control light in each room (different circuits). At some point someone removed one switch and installed a cabinet over one side. They removed the switch and installed a double switch on the other side so the lights can still be used. However, they did not use a blank cover on the side with the cabinet. So if you look into the box from the side with the double switch, you can see the exposed wood of the underside of the cabinet. Is that a hazard?