I've just bought a boat, but the electrical systems need a bit of an upgrade before going cruising for any length of time. At the moment, All the 12V runs from a single starter battery, and there are on-board plug sockets to hookup to a mains line.
I plan to upgrade it to a larger leisure battery pack. I plan to use 3 of these 110Ah leisure batteries, and use this 600W inverter. I then want to use a connector like this to connect from the inverter to the hookup socket, so that the onboard plug sockets will provide 240V when the inverter is on, and can be removed and plugged into shore power when needed. I only need 240V for say, a laptop, computer monitor and speakers.
I just have a few questions...
1) Is providing power to all the sockets going to be an issue, or should I simply mount the inverter inside the boat and plug directly into it?
2) What amp rating split charge relay would I need? I'm note sure on the engine or alternator size, but it's a diesel narrow-boat type one.
3) Will the plug connector I have mentioned be able to safely carry the current the inverter can kick out?
4) Is this a sensible approach?
Here is the current and proposed layout... (Green is current, orange is proposed)