In the manual it says: “2. A properly sized fuse must be inserted according to local regulations in the cable between the battery and the SBP.
3. Use a 1,5mm² wire (included) for the minus connection, which should be connected directly to the battery minus (or
the chassis of a vehicle). No other equipment should be connected to this wire”
What are the risks of connecting the ground wire to a negative terminal block instead of directly to the battery?
We have connected it to the negative bus bar that the battery was connected to. Not stacked with or connected to anything else. (I think they mean don’t cheat and steal the negative to power anything else off it.) That seems to be an important part in the instructions.
No negative effects on the install at all.
The intent of the instruction is to avoid external voltage drops in the path of this measuring wire..
so as LX mentions, it can be connected to a -ve busbar, but not to the -ve terminal of another piece of equipment that is also connected to the battery -ve.
So I connected mine to the -ve busbar that is connected to the Smartshunt just right next to the battery. Which is like my main negative busbar. So that should be just fine then?
Should be ok.