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Solar connections for 12vdc houseboat system

I am in the process of putting together a 12v system using solar, generator and boat motor alternator as charge sources and two battery banks one for motorstart and one for house boat (12v waterpump, toilet pump, car radio with amp, lights and 12v t.v) i have three panels with controller (PL-20 plasmatronics) i was wondering how to connect alternator into system and when connecting multiple panels do i need a diode at each panel?

justin
barooga N.S.W

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Hi,

Based on your post/description, I would suggest that:
1. There is no need to install a diode from the boat motor alternator since most current design used electronic regulators with built-in diodes. The output of the alternator therefore could go straight to the battery or a switch (*selecting battery 1 or 2);
2. It would probably be safer that you would install a diode after a portable generator since some design do not need/use internal rectification but are connected straight to the windings/coil;
3. There is no need to install diode after each solar panel.

To my understanding the Plasmatronics have built-in in-line diodes to its inputs/outputs (unless otherwise required such as with the "Catch Diode protection" across the load). Additionally, unlike in some other system, a PL-20 would require that the negatives not be tied to a common ground. The PL-20 is relatively a straight forward connection (it's the programming that is a challenge).

Hope this be of help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Tight lines.

Posted on Feb 01, 2008

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