Two dumb questions popped into my mind (sorry):
1) Why a 1600W microwave? We use a 750W on the boat. Cheap
to buy, cheap
to replace, and runs great on the inverter
. I don't think the "big" one at home is more than 1250W, and we never wished we had more.
2) Bad breaker? If you can't find a replacement, is there any way to swap it for another one from the same panel?
For troubleshooting, if you don't have the proper meters, plug
in a 1500W space heater. If that trips the breaker, you know which way to proceed.