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My avionics switch is a DPST switch. Basically two switches
in one. Each side controls the power feed from one electrical system. Sure, both
sides of the switch could fail at the same time but that would be unlikely. On
top of that I have a separate, isolated switch that feeds power only to the
GPS/Com so that even if both sides of the avionics switch should fail or both
electrical system 1 and 2 fail, I can power this unit from system 3. System 3 is
an 8 amp B&C generator and an Odyssey 545 battery.
N6ZQ IV under construction
Fred,
Even with all the
extra weight and redundancy, your avionics are all reliant on a single
switch. If that $7 switch goes, your plane is blind, deaf, and
dumb! The aeroelectric list does not recommend an avionics buss.
This is part of the reason for that.
Bill
B
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