I am in the process of designing the system for my motorhome looking for help to configure the system disconnects. The main components:
- 4- 440W solar panels > 4 DC breakers/disconnects > 4 MPPT 100|30 > Lynx Power In
- 8- 100Ah Lion UT-1300 > 2 - Lynx Power In
- MultiPlus II 12 | 3000 | 120 2x120
- Orion-Tr Smart DC-DC Charger Non-Isolated 12 | 12 | 30
I plan on a Battery switch on the starter battery negative terminal.
The coach system, I am planning to use a Shallco Bi-Stable Latching Relay BR-300-12-1-34 on the main negative terminal of the Lynx Power In before the Smart Shunt.
This should provide 100% battery disconnect from system. At this point the MPPT should turn off.
My question is: with the motorhome being all electric (no propane) is there any need for additional battery switches on the 12V input to MultiPlus II and/or the Solar output from the Lynx Power In?
This is my preliminary diagram