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Discussion Starter · #1 ·
I've helped a friend install a flexible coupling to his prop shaft. According to the instruction a ground wire should be connected across the flanges if grounding is required. Question is, if the shaft and prop are not ground and is insulated from the rest of boat system then there shouldn't be any cathodic action to eat away the prop ...right ?
 

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Discussion Starter · #4 ·
So even if I leave the shaft and prop "floated" (not ground) it has detrimental effect ? Where would the leakage current flow to and from ?
 

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Discussion Starter · #6 ·
Ok, just to be on safe side, I'll get my friend to loop a small wire across the flanges. Thanks for the heads up. :)
 
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