Any inverter with a capacity over 600 watts will be a heavy duty industrial strength job. You will need 700/800 but most of these products will be available in a rounded figure of 1000 watts, which makes it a pretty large, heavy, unsightly beast.shorttrader said:WOW! I didn't know it is so complicated until I read your detail post, Bruce; thanks. Is it much simpler if I just buy one of the jump boxes, connect an inverter to that and the microwave to inverter; how long is the microwave can be use until the jump box is depleted? I can then take the box and charge it with regular electrical inside house when I come back home. If I can get 10,15 mins, I am more than happy. Somehow, I think I am missing something here; I have no idea how these dc/ac conversion stuffs work!