Originally Posted by ScottBrownstein
What do you mean by "only one DC source can be active?" You mention the TM2025 so presumably it is connected to the neg and pos posts of the batteries. Why do you think your need isolation switches?
The main reason is so that when plugged into shore power, there aren't two charging sources active. The second reason was to prevent any feedback into the onboard charger while on solar. I may have misunderstood all that I read but this is the recommended way. The MPPT is used for the solar charging side so when on solar it is switched to power the dc panel directly isolating the on board charger.