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Alpha One (Gen I) outdrive -- anode question

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CaptMP

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m hicks wrote:"......
I keep my 1988 vintage alpha in salt water and it eats the fin zincs like
candy. I put on a Mercathode but it doesn't help much. I'm considering
hanging one of
those fish zincs. "

If you have shore power plugged in, then stray current from an adjacent boat
(or even bad dock wiring) will go to ground via your SAFETY GREEN AC GROUND
conductor, causing rapid zinc use and outdirve damage. Try a galvanic isolator
(transformer) unit, GUEST markets one (WEST MARINE, BoatUS. etc) about $160 or
so. I had to install one as the boat next to me had troubles (Gee, the pumps
and wiring are corroded again, must be the wiring in the bilge water...)
'Course he wouldn't admit it and Zincs on a Gen 2 Mercruiser can run better
then $120 to replace just in parts! Cutting the AC ground will halt the damage
but pose a lethal threat to your diver and anyone else in the water at your
dock.
Good luck and a happy Thanksgiving
Mike

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