Victron Smart Shunt - alternative to the BMV-712

[jd1923]

3 hours ago, Wayfinder said:

except I do not see any DC loads on monitor.

Do you have other grounds connected to your batteries? If so disconnect them from your batteries and connect them to source side of the SmartShunt. Between the shunt and batteries should only be the single 4/0 battery cable.

In fact, I see a 6 AWG Yellow wire, from the ground/neutral bus heading to the rear of your trailer. This is likely connected to the batteries ground. ALL trailer grounds must go through the SmartShunt. The way it looks as wired, your SmartShunt will only monitor DC current used by the inverter, only when the inverter is running.

Edited October 15 by jd1923

[Wayfinder]

16 hours ago, jd1923 said:

Do you have other grounds connected to your batteries? If so disconnect them from your batteries and connect them to source side of the SmartShunt. Between the shunt and batteries should only be the single 4/0 battery cable.

In fact, I see a 6 AWG Yellow wire, from the ground/neutral bus heading to the rear of your trailer. This is likely connected to the batteries ground. ALL trailer grounds must go through the SmartShunt. The way it looks as wired, your SmartShunt will only monitor DC current used by the inverter, only when the inverter is running.

Thanks JD!  That makes good sense to me now.  I do have at least two negs going to the batteries directly. And everything you said about the 6 AWG yellow wire is correct.  I tried to note that in the overlayed pic.  I'll see what I can do about moving those wires. 

[GraniteStaters]

Chris,

On our LEII, 2019, there was a yellow ground wire from the negative post on one of the 6V batteries that ran back to a bus bar that was grounded to the frame.  I discontinued this yellow wire in favor of an additional bus bar that I connected  to the Oliver ground bus bar to allow grounding of the inverter and the shunt.  This means that our batteries are grounded by the 4/0 inverter negative wire that runs from the new bus bar to the battery negative post on the first 6V battery.  

[ScubaRx]

29 minutes ago, GraniteStaters said:

Chris,

On our LEII, 2019, there was a yellow ground wire from the negative post on one of the 6V batteries that ran back to a bus bar that was grounded to the frame.  I discontinued this yellow wire in favor of an additional bus bar that I connected  to the Oliver ground bus bar to allow grounding of the inverter and the shunt.  This means that our batteries are grounded by the 4/0 inverter negative wire that runs from the new bus bar to the battery negative post on the first 6V battery.  

I'm not sure I follow all that but the negative wire coming from the battery should go to the shunt before everything else. Then you can continue on to the buss bar from the other side of the shunt. ALL negative wires should be connected AFTER the shunt or else you won't be measuring all current flowing into and out of the battery bank.

Edited October 16 by ScubaRx

[Derek B]

@Wayfinder here is a pic of my shunt and bus bar install. Sorry for crude labeling. On the road using my iPad. The shunt lugs include the inverter negative, batt ground, and solar negative and a 4/0 jumper.