In my boat, my house battery bank appears to be completely isolated. It does not share a common negative with either starter battery, nor does it connect to either engine, nor does it connect to the alternating current ground.
The instructions for the multiplus say to connect the case grounding terminal to the grounding plate of the boat. I don't have a grounding plate because the entire alternating current system is protected by an RCD (no bonding of DC negative to AC ground required).
What am I supposed to hook the case grounding terminal to?
Just to note, I'm waiting on one of the local marine electricians to show up and actually do the install, I'm just generally curious how this situation is supposed to be hooked up.
