Thor Forums

[Oneilkeys]

Originally Posted by Chance

Thanks, that's what I was seeing from diagram.

It's a nice setup, and quite different from very old motorhomes that essentially had a manual switch in place of isolator relay. In those days the owner made decisions instead of the BIRD, which could lead to making mistakes.

I like the automation, but don't know about the added complexity. One thing that is an improvement compared to previous systems like I had is the higher charging voltage, and also being able to charge the engine battery off converter or inverter/charger when 110-Volt is available.

Thanks again for clarification.

When you look how the system actually works, it isn't really that complex. The Trombetta is a simple open/close relay and the BIRD is an isolator relay that opens and closes the Trombetta based on the voltage it is receiving from the two battery banks. I talked to the people who build the Trombetta and BIRD when I was trying to figure out how Thor miswired mine and everyone I asked told me that both components are very reliable. The problem almost always is in the wiring. In this case the added complexity makes life simpler and probably more reliable. I think you are right. There is more chance for the user to make a mistake without the system than the chance that the system will malfunction.