At those ratings you've got little choice but to run new wiring. There's a limited exeption for tapping off a range circuit for running separate cooktops/wall ovens, but not at the ratings you're talking about.

I assume by "stove" in your post you really mean "oven." You'll have to check the specs on your oven, but most single wall ovens these days require 30A circuits.

You can remove the 40A breaker to put in a 50A (note that you'll have to replace the wiring most likely as well, you just can't up the breaker if the ampacity of the wiring isn't sufficient).

As for schemes for what to do if out of breaker positions, it depends on the panel. You may be able to make use of tandem or thin breakers (depending on manufacturer) to free up some positions. The other option (which may be cost effective) is to run a 70A or so feeder from the main panel to a subpanel near/in the kitchen.

Answering question 1... With a full range the manufacturer can use power management to ensure the maximum amperage rating is not exceeded. This may be shutting off certain burner elements when other burners are in use. When you have 2 seperate items like a cooktop and a wall oven, no power management is designed in as they are both completely individual units.

Further, inductions need more power at peak settings anyhow (so even if it were a range it would likely need a bigger circuit). My Bosch double wall ovens run on 30A but they'll only do fast preheat if only one side is running.

Upgrade your service. A full panel means zero versatility for any future needs or projects.

> Upgrade your service.

That may or may not be necessary. An electrician can do a service load calculation, or you can find instructions on the web to DIY.

If you're well within current capacity but just out of spaces, a subpanel is a less costly solution.

Alternatively, with lighting loads now a fraction of what they were 20 years ago thanks to LEDs and fluorescents, I see no reason not to double up or maybe even triple up lighting-only circuits to free up panel spaces. Again, a load calculation will determine whether this is prudent.

What specific cook top are you looking at? I've not seen one that requires 60-70 amps.

I had a similar problem. Needed a 240v circuit in my kitchen for my dishwasher, but panel was full. Ended up installing a subpanel to power all the 240v household appliances: dishwasher, clothes dryer, and future espresso machine. Not a big deal. Not as ideal as a new bigger main panel but it works.

Upgrade your service. A full panel means zero versatility for any future needs or projects.

Service has nothing to do with the number of spaces in a panel.

What specific cook top are you looking at? I've not seen one that requires 60-70 amps.

I think he was talking aggregate between the cooktop and the open. Induction cooktops typically run 40-50A. Wall ovens 20-30A.

I just saw the Specs for the new Thermador Freedom all induction cooktop and it is rated at only 30 amps.

Only in the 30" version. The 36" version requires 40A.

Your panel should have a large main breaker at the top, or in a few cases the main breaker might be outside in a box near the electric meter. Take a look at the main breaker and tell us the size shown. Typical would be 125, 150, or 200 amp main breaker.

If it is a 200 amp panel, which is common in newer houses, it should be sufficient for your new kitchen appliances unless you already have an unusual electric load (all electric heating, tankless water heater, etc.) An electrician could do the total load calculation.

Many modern panels are also rated to handle double breakers in a few of the slots. The panel is often identified as something like a 30/40 space panel, which means there are 30 breaker positions, but 10 of them can handle a double breaker, giving you support for 40 circuits.

If your overall service is sufficient to support the total load, you would also have the option of installing a sub-panel next to the main panel to get more breaker positions.

Bruce

Thanks for all the help/comments.
We have a 200amp panel/service. We will be putting in a small sub panel which will help with the kitchen model as well allow me to better organize the circuits.

We are looking at the Frigidaire gallery line for all the appliances.