Originally Posted by captain jack
while you guys are discussing electrical appliances on a boat, someone previously referred to microwave use on a boat. i had never considered that because i figuered the the energy requirements would be too great. out of curiosity ( i wouldn't want to actually use up the extra space ), how practical is microwave use on a boat? as far as battery usage, i mean.
Look at the current draw. Even a small micro way will require more current than a small boat can easily provide. Almost all compact microwaves call for a 15A circuit. Even if you can get away with 10A, that's 10A at 120V, or 1200W. In other words, the draw on your boat's batteries would be about 100A at 12.5V. On big boats, with big battery banks and gensets, that's doable. On a 27-foot boat, not likely.