[C320-list] Current Shunt mounting

Troy Dunn troutwarrior at gmail.com
Sat Mar 28 16:40:55 PDT 2020


Your setup is exactly like mine.   You have a reserve 12V battery on 1 and
your house battery is on 2.   Your house is probably about 400 Amphours
give or take. If you want to see how your bank is probably wired go to my
album on the association website and look DC power upgrades.   I have an
easy to understand cartoon style schematic in the wiring diagrams.

https://c320.org/mediagallery/download.php?mid=20190909004102641

You'll notice that two of your 6V batteries are in the aft compartment and
two are in the forward compartment most likely.   The 6V batteries in each
compartment are most likely wired in series to effectively create two 12V
house batteries of approximately 200 Amphours.   These are then wired in
parallel to give you 400 Amphours bank capacity.   This is a very good
setup for the C320 and you will find many other owners have implemented
some variation on this theme.

To find the shunt for your battery monitor, you need to find the negative
wire that is wired to your house bank.  There should be only 1 1/0 Black
wire going directly from one of your two effective 12V batteries to the
shunt.   Hopefully this is in the forward compartment as this would be
ideal and would have cost the installer the least amount in wiring to
upgrade the system.  If there are any other negative wires going elsewhere
or to a ground, your shunt will not work properly.

Good luck...take pictures, post them in your album.

Troy Dunn
S/V Wonky Dog
Hull #514


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