I have replaced my AC units with a different brand (Marinaire) and used existing wiring. They have an added need that I am unsure how to address. They want the unit connect to anodes to reduce corrosion. On my Hunter 44, the only anode I know of are the zincs. In order to wire this, I need something else, I am sure. Thoughts, knowledge, or suggestions appreciated.
Anodes for AC sytem Hunter 44DS
- Thread starter Fullmoon44
- Start date
This is to prevent any potential galvanic corrosion of the A/C when plugged into shore power when another boat near you has a leaking electrical issue and you share a common ground through the shore power. IMO, this is a rare occurrence and you will notice the problem through other means like your engine or prop shaft anodes disappearing before the A/C experiences any issues. You could bond the A/C to your engine block to use that anode, but personally I'd install a galvanic isolator on the shore power ground wire and prevent the problem from ever reaching your boat in the first place.
Mark
Mark
I asked Dometic the same question.
On my boat bonding is not needed.
Simple test:
1) Disconnect from Shore Power.
2) Use DVM to check low resistance between Copper Dometic Cooler/Evaporator and Engine.
Low resistance = Electrically connected to Engine shaft Zinc.
Shaft Zinc is protecting your AC.
Jim...
On my boat bonding is not needed.
Simple test:
1) Disconnect from Shore Power.
2) Use DVM to check low resistance between Copper Dometic Cooler/Evaporator and Engine.
Low resistance = Electrically connected to Engine shaft Zinc.
Shaft Zinc is protecting your AC.
Jim...