Some gens have a 12V winding on the end of the armature used to charge their battery instead of a separate belt-driven alternator. The hash that came off these things was also not very helpful for the long term health of the battery they were hooked up to. On my old Onan, I disconnected this and provided charging to the gen batt via a Blueseas ACR; so whether the boat was on ship or shore power of underway without ac power being generated the generator battery got properly charged.
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Rich Gano
FROLIC (2005 MainShip 30 Pilot II)
Panama City area
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