Why is the alternator connected only to one electrical bus in the C152? I am a noob in electrics so pardon my ignorance. What I see from an electrical system of C152 (pasted below): there are two busses, connected to each other, but alternator is fed only to the first bus. Does it mean that each component connected to the second bus takes energy from the battery and due to that battery is constatly discharging and alternator must additionally load the battery? If that is true (correct me if I'm wrong please) why don't connect alternator to both busses?
There's a direct connection from the primary bus to the other bus, so they are essentially one. If you have a wire connecting the two, the current will flow from one to the other.