Thats what I have, works fine. A convection oven with anything less would take forever. Some newer units are 220v.
There's a post last month that has all the info on what I've done. I'm a fulltimes & cook quite a bit
convection/micro combo models and venting
1991 41.5' #266
2009 Pontiac Vibe GT Toad
Fulltime on the road
A convection microwave is usually placed on a 20A circuit and that will handle 1500 watts ok. But if you plan to plug it to a regular galley outlet instead of the dedicated microwave outlet, you may come up short.