I am adding in a CCGX to my system. I have a Multiplus II 48/3000, 500A SmartShunt and a SmartSolar MPPT 35/150. I want to connect the shunt and MPPT controller with VE.Direct cables, and the multiplus with a standard UTP cable to the ports on the back of the unit.
But before I add it in, there is one thing that concerns me. And that is if the devices provide galvanic isolation between each other, or if there is a risk that high currents can accidentally run through the smaller signal cables.
Example scenario: The minus cable between the MPPT controller and the battery bank breaks. Normally current would stop flowing. But assumong no galvanic isolation, this current could then instead take the path through the VE.Direct cable running to the CCGX, and then from the CCGX' tiny negative supply wire and back to the battery. In that case, those cables can not withstand high currents, nor are they fused in case such a problem happens.
Any ideas on this one?