We are soon to be installing a Victron SmartSolar 100/50 in our RV. It will be connected to 4x 100W solar panels in a 2s2p configuration. Our travel trailer’s 12V ground is connected to the trailer chassis.
Do I need to connect the solar panel negative to the PV- on the Victron solar charger or can I instead connect PV- to the existing common ground (ie the chassis) and connect the solar panel negative to the common ground too?
This is how another MPPT Charger we have installed is wired but I see no mention of it in the Victron documentation. Doing this would simplify our cable runs.