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AuthorMessage
bru6ey
bru6ey

Posted: Sat Dec 20, 2014 3:42pm

Post Subject: battery charging

Hello Tony re lets be positively negative in Jan 15 issue would the same layout be ok for twin alternators thanks Bruce

Tony-B
Tony-B

Posted: Sat Dec 20, 2014 4:33pm

Post Subject: battery charging

I general terms yes. However if your domestic alternator negative lead runs right back to the batteries then it would normally be connected to the domestic negative rather than the engine negative. One the other hand many boats have the domestic alternator negative connected to the engine block and although not 100% ideal it is still satisfactory. The above does not apply if you have a single battery master switch in the main negative lead but that is poor practice anyway so is less likely.

Tony-B
Tony-B

Posted: Tue Dec 23, 2014 9:19am

Post Subject: battery charging

One further point. If you are rewiring your boat please check with the BSS requirements. I understand that strict compliance requires the alternator's main output to be isolated by the relevant master switch so the main charging positive would run to the switched side the the master switch and then the main domestic positive cable would continue to the battery bank.

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