adding second 30A shore power to feed AC unit only

[Blue Destiny]

I have couple of questions regarding this topic.
I want add separate 30 amp shore power inlet to feed my new installed 16l BTU Webasto FCF AC unit.
So after 30 amp inlet I an installing ELCI Main 30A Double Pole breaker. Green wire after inlet going directly to galvanic isolator and then where the green going?
And second set of questions after I install metal components of AC system, that contact with sea water, like through-hull, unit it self, sea strainer (also bronze in the webasto installation kit) how I understand I need to bond them. So I am bonding them to existing boat ground bus bar, or I have to create new ground bus bus using my green wire going from isolator. I think green after isolator have to meet with DC ground and that point

 

[Don S/V ILLusion]

User manuals (installation manuals) are your friend

 

[marcham]

1) Are you in America or Europe? There are some small wiring differences...

2) If in North America, then the grounds of BOTH shore power connectors go to the same galvanic isolator. That's it .... then the new hot/neutral go to their main panel in the cabin then on the AC. ....

power inlet ->> ELCI --> green wire to the same galvanic isolator as the other shore power connection

3) Bonding... do you have a plastic or metal boat? Are they high quality bronze (Groco) or questionable "bronze". If your boat is plastic and you have real bronze thru-hulls, it's not required.

Fiberglass and bronze are not galvanically incompatible.

If you have low grade or questionable bronze, then yes, you should have a bonding wire that runs through all your thru-hull metal fittings, back to your main ground bus bar.

You can get short term access to ABYC standards, look up H27.

4) Common ground is just that COMMON....you really don't want two separate ground references.