Originally Posted by goboatingnow
In a grp boat. Don't bond and don't connect AC protective earth to negative DC. ( despite what ABYC day )
Fit a whole boat RCD ( ELCI )
Even doing all of that, he still has the question about bonding his currently isolated shaft and prop.
A similar example is the Volvo saildrive
, which is electrically isolated from the engine -and thus the rest of the boat. The zinc on the saildrive
takes care of any galvanic issues with dissimilar metals (bronze prop, SS shaft, Al housing), but the isolation is what protects the drive from electrolysis.
But to answer the OP's question - if you do want to rebond the shaft and prop to the engine and DC system on the boat, then yes, a wire or strap jumped across the coupling junction will do so.