I use a Power Jack 3kw low frequency sine inverter, 24v input on my boat. I did have an 8kw split phase 220, but it was too heavy. These are cheap
and sold by numerous vendors on ebay, but they are all the same family
, it seems. Parts
are available, but sometimes language and distance can make it interesting. Plenty of other models are available, too, but I recommend sine wave and low frequency for best results.
The inverter powers my microwave and coffee pot during the cruise
and the shop vac, power tools and lights back at the shop.
All my power comes from solar panels
, which also run the propulsion
, and is stored in 6 8v golf car batteries.
If you need lots of power, 24 volts is best, I think, and adding a 24v alternator
just to keep the batteries up avoids having to run at a specific rpm
to get 60 cycle ac. The inverter takes care of that. Best of all, a lot of the time the engine can be off and the power is silent.
If you go to a 24 volt system, you can get 24 to 12 volt converters pretty cheap
to run accessories. I have two 30 amp converters that have never given a minute of trouble, even when doused with seawater. They are inexpensive on ebay.
And yes, if you can pull heat from the engine, better it go to you than the fishies.