Originally Posted by rwidman
Put on your thinking cap for a minute. If you connect a cable from the AC system to a "plug", you have just constructed what we call a "suicide cord". A cable and plug with live 120 volts AC on the exposed plug pins. DO NOT DO THIS!
It's impossible to describe in detail how to connect an inverter to your boat's electrical system
on a web forum. The rest of your post indicates to me that you should probably not be attempting this yourself. My advice to you is, hire a pro.
I don't mean this as an insult, I'm trying to keep you safe.
Much depends on which inverter you're buying
. Some of the newer "standalone" units actually have ATS inside. If you don't know what an ATS is, then there are other issues with your abilities & knowledge.
If you tell us which inverter, specifically, you are thinking about, we may be able to help some more.
In addition, a 1,000 watt inverter, if tied to the ship's AC system with proper transfer switches to avoid having shorepower, other AC sources and the inverter ever connected at the same time, will most likely require management, since a standard water
heater would exceed the inverter capacity.
It's the little things like that that can trick you.
Let us know, good luck, but luck should have nothing to do with it.