The 1500 watt inverter runs a microwave oven or an electric coffee
maker when we are under way. I also have a little electric 'fridge and
we can leave it plugged in all the time.

I'm interested in how this setup performs when you're not underway. Is this
something that would be hard on the house bank?

My fridge is ac/dc but I'm stuck without coffee, boiling water etc. unless
on shore power and haven't fully decided my solution.