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Old 08-15-2013, 08:41 PM   #1
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Wiring a shunt into a trimeter battery monitor

The instructions say to connect battery negative to one side of the shunt but I am confused as to exactly where I should connect the other end. My sense of it tells me just to connect it to the wire I removed which goes to the grounding post on the coach side. But the instructions say to connect it to the "load" side. If any one can square me away I would appreciate it.
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Old 08-15-2013, 10:11 PM   #2
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A shunt goes inline with the connection to the battery bank - so all current in or out of the battery(s) must pass through the shunt. The smaller wires connect the meter to the shunt.
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Old 08-15-2013, 10:17 PM   #3
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yes to chassis ground
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Old 08-15-2013, 11:52 PM   #4
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Quote:
Originally Posted by EBS64 View Post
yes to chassis ground
Does it go to chassis ground if I have a solar charge controller? Someone else suggested to me that the neg wire from the controller goes to the shunt and then to battery negative. My this is confusing!
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Old 08-16-2013, 12:37 AM   #5
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Simply remove all wires from the negative side of the battery bank and connect them to one side of the shunt. Then run another new lead from the other side of the shunt to the negative side of the battery bank (make sure ALL the negative terminals on the battery bank are tied together.

Your solar charge controller negative output should tie to chassis ground. Now everything going into or out of the batter bank is captured by the shunt. Connect the trimeter (trimetric ???) sense lines to opposite ends of the shunt (negative to chassis side of the shunt) with the small screw terminals.

I just installed a Panametric battery monitor. I had two large leads going to the negative side of the battery bank - one from chassis ground and the other from the inverter/converter. I moved the lead from the inverter/converter to chassis ground terminal and the chassis ground lead went to one side of the shunt. A new cable was installed between the other side of the shunt and the negative side of the battery bank.

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Old 08-16-2013, 12:38 AM   #6
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Quote:
Originally Posted by Stan&Jacquie View Post
Does it go to chassis ground if I have a solar charge controller? Someone else suggested to me that the neg wire from the controller goes to the shunt and then to battery negative. My this is confusing!
If you want to see what is going into the battery via the solar controller - yes.

A shunt goes inline with the connection to the battery bank - so all current in or out of the battery(s) must pass through the shunt.
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