We're planning a migration from a single oven to a double oven, and I'm looking at electrical requirements.

Presently, we have a glass-surface electric cooktop and single oven, and it appears those two are powered by a 240V, 40A breaker (two 120V/40A breakers tied together). Most of the installation specs for the ovens I've seen so far say they want a *dedicated* 240V, 40A circuit, so it raises concerns for me that if we leverage the existing wiring and install a double oven, we risk tripping that breaker the first time both ovens are in operation along with the cooktop.

Can anyone with electrical/appliance backgrounds provide any insight on this? The cost of running a dedicated 240V/40A line (to serve either the cooktop or the oven exclusively) would probably make me reconsider this whole double-oven project, unfortunately. I've got plenty of room in the breaker box, fortunately, and if I did go to the trouble/expense of having new wiring run, I'd probably specify 50-60A capacity as I know some ovens are a bit more power-hungry...

(I'm a pretty handy DIYer, and I've actually done some minor work in the house - replaced plugs/switches, spliced in a new outlet from a junction box), but running a new 3-phase circuit from the wall is waaaay over my comfort level.

Thanks in advance for any info.