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MSFS Aircraft electrical systems - help me decipher this diagram

Hi all, been attempting to set up my aircraft's electrical system to match the reference aircraft as closely as possible. Looking through the flight manual, I'm pretty happy with how the system works; but I'm struggling to translate this to MSFS's systems.cfg.

Here is the diagram I am working from:
The GENERATOR 1 BUS is separated from the BATTERY BUS by the BUS TIE. Under normal conditions this is closed, allowing current to flow between the two busses (to my understanding).

The same happens with GEN 2, where the GENERATOR 2 BUS is also separated from the BATTERY BUS by the GEN 2 TIE, which is open under normal circumstances, and closes if GEN 1 fails.

How would I write this in systems.cfg to allow for the three busses to be isolated from each other? Do BUS TIE and GEN 2 TIE need to be their own 'bus.' entries, for example below?
bus.1 = Connections:bus.2 #Name:BATT_BUS
bus.2 = Connections:bus.1, bus.3 #Name:BUS_TIE
bus.3 = Connections:bus.2 #Name:GEN_1_BUS
bus.4 = Connections:bus.1, bus.5#Name:GEN_2_TIE
bus.5 = Connections:bus.4 #Name:GEN_2

Basically, I'm just trying to get my head around how best to represent this diagram in systems.cfg, so any help is appreciated!