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Regarding the Green (ground) wire that comes from the shore power. Yes my shore power is 30amp and wired Black (hot), White Neutral, and Green (ground).

I am wondering if this green wire needs to be connected to my engine block. This wire obviously comes from the shore line dock 30a connector then proceeds to my on board AC 120v Breaker Panels green labeled bus bar. I noticed that there is no additional wire going from this bus bar to a ground on the boat. A little reading online and it seem that it may need to be grounded somewhere on the boat and one place was referred to as the engine grounding bus.

I was thinking of just going right to the engine bellhousing?

If anyone could give some input it would be appreciated.


Thank you

Frank
back from being off the grid and in drydock for five yrs. good to be wet again.

All the grounds (12 volt and 120 volt) need to be grounded together... On my boat they're all connected to my main zinc place on my transom... My engines and all my bonding wires are also connected to this plate...

http://www.marinco.com/en/4531001

To be safe you should have an isolator similar to what is above. Green wire goes into the isolator then to the AC panel then from the Panel to the block or a common ground.

Tony Meola wrote:To be safe you should have an isolator similar to what is above. Green wire goes into the isolator then to the AC panel then from the Panel to the block or a common ground.

Frank, what Tony says about the "Galvanic Isolator" is true... It's an "optional" item but as it's a relatively simple and cheap item and it WILL save you money down the road it's a no brainer... And, if you're considering a "Galvanic Isolator" you should also consider a capacitor...

http://www.yandina.com (no connection, just a satisfied customer) has some of the best prices I know of...