Why did you wire the shunt after the SOLAR wires?
That is how the Victron BMV-712 battery monitor works. Only one negative connection to/from the battery, that way the shunt can monitor all 12v activity.
I'm pretty sure that is how they all work. So the SOLAR should be on the side where the shunt can see to energy going out and going into the batteries.
What do you mean by "SOLAR"? The positive coming off his MPPT? He has that going through the cutoff switch, then to the battery. Looks fine to me.
Here it is the install diagram. What do you think is wrong?
View attachment 59430
Your graphic does not match what was posted.
View attachment 59431
Maybe Gavin can answer, since it is his install.
What do you mean by "SOLAR"? The positive coming off his MPPT? He has that going through the cutoff switch, then to the battery. Looks fine to me.
Here it is the install diagram. What do you think is wrong?
View attachment 59430
Someone needs to get their glasses checked, and it is not me.
Here, I turned your pic sideways to make it easier to compare
View attachment 59435
This is the same diagram that Victron (shunt manufacturer) sent me, so I would be surprised if it is not correct and I have wired the system to their specifications.
Gavin
Gavin, my question was why do you have the controller negative lead before the shunt ?
actually I see 3 leads ‘before’ the shunt.
the shunt, no matter what brand all work about the same. One side is from the battery negative and nothing else.
The output or second terminal can be thought of as the negative battery post and all negative leads should be there (or on a bus bar to disitribute the wires better).
I see 3 negative leads before the shunt.
1) Battery begative
2) controller negative
3) ??? Negative (don’t see where it goes)
Someone needs to get their glasses checked, and it is not me.
Here, I turned your pic sideways to make it easier to compare
View attachment 59435
Below is the official response from Victron (Shunt Manufacturer) ...This is what I have sent Victron, let us see what they have to say
From the email ...
"I have installed a Victron BMV-712 smart Shunt – Battery monitor and wanted to know if the shunt is is in the best location possible to record all draw on the batteries.
I have taken a photo and labelled all wires.
If you could please forward this on to a tech guy for his review I would truly appreciate it."
Gavin
....... and as Bubba Gump so famously said "And that is all I am going to say about that"
I am going to send the image of my install to Victron with all cables labelled for their input on where the shunt is located and if it is correct, for I am now curious.
Right now it is my understanding that the install and location as it is is correct.
I have a friend (Stuart Jacobson) who is a mechanical Engineer from Stanford and he too feels that this install is correct. Trust me Stu will have no issues telling me that I screwed up.
Duane, can you please explain why you feel that the shunt is in the incorrect location ?
This is what I have sent Victron, let us see what they have to say
From the email ...
"I have installed a Victron BMV-712 smart Shunt – Battery monitor and wanted to know if the shunt is is in the best location possible to record all draw on the batteries.
I have taken a photo and labelled all wires.
If you could please forward this on to a tech guy for his review I would truly appreciate it."
Gavin