Schu,
It is easier for me to visualize a circuit by looking at an
electrical schematic rather than reading about it. If I understand
correctly, you intend to have one switch control two alternators. It
seems like a single point of failure. What happens when the switch
fails? Switches probably fail about as often as alternators. It is my
understanding that it will not hurt to have two alternators on line at
once. Power will be drawn from the one with the highest voltage. Bob
will correct me if I am wrong.
Having one switch for the avionics is also a single failure point.
In Z-13/8, inadvertently turning on both the master switch and the E-Bus
Alternate feed switch will not hurt anything. The Endurance Bus will
draw from the highest voltage source. After engine shut down, it is
important to remember to shut off both the master switch and the E-Bus
Alternate Feed switch.
Keeping the electrical controls simple is a worthwhile goal. Having
options in case of a failure is another worthwhile goal. Aircraft
design is a matter of compromises. It is hard to improve on Bob's
designs. They have been scrutinized by many and have evolved over the
years.
Joe
