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Old 12-06-2012, 11:19   #1
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Connecting several sources to the house battery

Dumb question of the week! I want to connect my solar, water generator, engine alternator and house battery together and then use an ACR or echocharger to supply the starting battery.

The thing I can't get my head around is each of these items has a different voltage - what happens when I tie them all to the same busbar?
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Old 12-06-2012, 11:56   #2
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Re: Connecting several sources to the house battery

Not 100% sure, but I can be very sure that it won't be good..
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Old 12-06-2012, 13:21   #3
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Re: Connecting several sources to the house battery

Multiple charging sources ar the norm on a crusing boat and will not cause any problems. Make sure all the charging voltages are appropriate.
The charging source with the highest voltage ( or longest time at the highest voltage) will be the dominanant charging source as the batteries become , so if possible arrange he charging voltages so they cut out in he best order, say engine, water, and solar last.
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Old 12-06-2012, 13:27   #4
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Re: Connecting several sources to the house battery

Best bet is to tie all of your external 12V sources to something like a Blusea Safety Hub 150, then a 0 or 00 cable direct to the battery bank. The battery combiner/echo charger goes between the house and start batterys. All of your inputs should be seperatly regulated and your house bank will accept whatever current is avaliable.
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Old 12-06-2012, 14:01   #5
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Re: Connecting several sources to the house battery

Hey Micheck,

Check out my diagram on the thread just below yours. I have two charging sources (Iota 45 charger and Yamaha starter/alternator) joined to a single bus bar along with an ACR.

Revised Diagram . . . Cables and Fuses Correct?

I'm pretty sure that I have this drawn correctly, but I'm still trying to get a little more help/advice with the fusing of these circuits.

Regards,
Roscoe
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