Wiring an auto switchover inverter

[arthor]

Greetings

Been doing some rejigging on the boat while waiting for the gearbox to arrive. The wiring was a mess of layers put in over the years so I'm pretty much starting from scratch.
I have a Waeco PP1000 inverter with auto change over. With this in mind, I was going to go fairly minimumalist with my 240v and run it all from the inverter. Three fairly large questions

One- 240v output. This, in theory plugs straight into the inverter but I am thinking I want some sort of protection there and am considering putting in a 30amp circuit breaker before fanning out to the sockets. Does that make sense? I have several sockets but very few will be used at once. Should I be thinking about RCD as well?
Two- 240v input. This is via a socket on the inverter that is like a PC/monitor socket. My take on this is that if I have a lead with a plug like that at one end and plug at the other end for connecting to the power post, I should be ok. Would I need some sort of circuit breaker in there as well? I can't see the point of including any fancy switchover stuff if the inverter does that automatically for me.
Three- All this 240v stuff is three pin. Does everything get earthed via the third wire in the cable and the third pin to the inverter and from there on to the engine or should I include earthing circuits elsewhere?

I hope this makes sense and your feedback would be much appreciated.

regards

 

[David2452]

You need both an RCD and over current device, both usually in a single consumer unit (circuit breaker is a switch) I have no clue why you would contemplate a 30a one though 16a would be more appropriate to the 2.5mm2 cable and loads you would expect.

 

[arthor]

Many thanks for that. The old system had the external power lead ending up at what looks like a single line consumer unit affair. Once I get it out I will look at using that and I would imagine that it has the appropriate rating. I didn't realise that RCDs were incorporated into them so that will be useful as well. When you mention the RCD and an over current device, I take it you mean between the shore power and the inverter to protect the inverter itself. Would I be right in thinking that I also need similar protection for the system that is 240v out from the inverter.

 

[David2452]

On a "pass through" inverter the PE has a continual connection so no RCD is required after it, over current devices for each circuit should however be provided downstream of the inverter. Truthfully the best advice I could offer is to have somebody properly qualified to do it, or at least inspect your work on completion.

 

[arthor]

Thanks again. Once I get to the bottom of everything already in place, I will probably find that is pretty much how it is. It just looks a mess so I am relocating a few things and simplifying it so I know where everything is rather than having a glitsch downriver. I take onboard your advice re getting it looked at once I'm done.