I’m installing a Victron 712 battery monitor with shunt and Orion TR smart DC to DC non isolated charger together in a campervan.
I understand that with the non isolated dc to dc charger the start battery and the house battery must share a common (chassis) ground.
In the installation instructions for the 712 there is no indication that the negative side of the house battery should go to chassis ground at any point. It only shows the negative side of the house battery going to the shunt ‘battery only’ side.
Is it possible to ground the house battery to the chassis as well as through the shunt and still have the 712 battery monitor work correctly and allow the dc to dc non isolated charger to also work?
Thanks for the reply’s. From this I have gathered that with a shunt connected along with the dc to dc charger, the chassis ground needs to be connected to the loads and chargers side of the shunt.
Another question I have is; my house battery bank is 3- 50 amp/hour lithium irons in parallel for 150. Two of the batteries are side by side and the third is about 4 feet forward of those two. That’s the only way for them to fit. They are all paralleled with 2 AWG wire. The shunt for the Victron battery monitor is located between the two batteries and the single battery.
My question is do the three batteries have to be paralleled before taking a single wire to the battery post of the shunt or is it acceptable to run a wire from the back batteries and a wire from the front battery to the battery post of the shunt. Less wire while paralleling the third battery into the bank.
