I've looked at many brands for both the cooktop and the oven/microwave combo. The issue has primarily been space, which is always the case on a boat, isn't it?
The 1000W induction cooktop versions are a single burner, which might be too small if I needed two burners, although rare. They are also very small form factor wise, and I'd need to build a surround to install one. I've also considered just using a plug in countertop versions, of which there are many available, and just covering over where the oven has burners now.
Kenyon has some really nice dual burner, touch interface versions but they are 1800W assuming you're using both at the same time. Here's one of them:
https://www.cookwithkenyon.com/shop/silken2-2-burner-trimline/
The oven/microwave has been a bit more challenging in some ways. I've found simple ones like this one
https://www.recpro.com/rv-convection-microwave-stainless-steel/ that would do well in the space, but are a bit small. Many mainstream brands have surrounds or trim pieces that would allow them to be mounted underneath in a cabinet and still get proper ventilation. Most of these vary from 1000W-1500W depending on which settings you're using.
My goal has always been to be able to cook a decent sized pizza in one of these, and this particular one above is pretty small. The larger ones get a bit more complicated because they're generally meant for home install and much wider.
One I had been looking at was this GE one:
https://www.geappliances.com/applia...crowave-Convection-Oven-PWB7030SLSS?rrec=true. It uses 1000W as a microwave, and 1600W as a convection oven. The width is still an issue, so I am looking at options there.
If I chose the biggest of both of these, with the 1800W cooktop and 1600W oven, I would be over my 3000W inverter max by 400W. The likelihood of using both the cooktop and oven at the same time is pretty rare, but it could happen.
I'm still considering putting the oven/microwave on the inverter and leaving the induction cooktop on the generator only. Right now, I have a 1100W microwave that is on the inverter and it works just fine. You do have to be aware of turning too many things on while on battery mainly because of the inverter max, but that's nothing new.
I definitely have the battery power to back it up. I have 800 amp hours of LiFePO4 which could pump out 800 amps of continuous power or 1600 amps for a short time if I had an inverter capable of consuming that much
I've seen my 3000W inverter pull around 275 amps when I tested it fully loaded with the microwave, coffee machine, and other things all running. Voltage never wavered, but that's expected with LiFePO4 and one of the reasons I switched to it on this boat and the last.
If I am on shore power, the Power Assist function of the Victron will pull power from the batteries to cover things if I exceed what I can get from the 30 amp shore power, all the way up to 50 amps total, which is nice. So if I forget to turn off the water heater, and have other things on, and kick on the microwave, coffee machine, and maybe a burner, I am just pulling amps from the battery bank to cover the overage since I'm at the dock and can be recharged afterwards.
My inverter has a 120 amp charger, and I'm adding an additional 60 amp charger to bring me to 180 amps of charging while plugged in to shore power.
If I'm out and about, my 9kw generator can handle 50 amps of output, and handles that load. Charging underway is something I wrote about recently in my Wakespeed alternator review at
https://seabits.com/wakespeed-ws-500-regulator-review/ - I can charge at around 400 amps continuously while the main engines are on which includes the two 175 amp Balmar XT series alternators and 120 amps from the Victron inverter/charger if the generator is on. That will go up to 460 amps with the new AC charger, run by the generator as well. I can generally recharge my LiFePO4 bank from almost empty in about 2 hours, which still amazes me.
What I really need to find is the convection oven/microwave combo. Once I am able to narrow that down, then the induction cooktop will fall into place easily, and whether to wire them both to inverter or not will be dictated by the overall power budget of the two.
