If your coach is 30-amp, watch the power consumption of the microwave. We have a the Samsung that was popular on RV's 10 years or so ago. There was a recall on the control pad, but ours was OK. So OK that it's big and fast like a home unit and that's the problem. Often have to shut the A/C off to use the microwave on our 30A service. I'd be happier with a smaller micro with less power draw. There are Inverter microwaves where a lower setting means less power consumption, but they're more expensive and seem to be less reliable than the ones that cycle full power to achieve a lower "cooking power."