Do you run a master switch, or are the Circuit breakers the switch. I
   have a master switch, but its bothering me that if that if ONE switch
   fails, it all fails. I I think I'll skip the master switch for flight
   critical.

   Bob Mears
   Supermarine Spitfire

   That has happened Bob. A Power Sport RV8 crashed and was destroyed
   when the master switch failed.

   Not a problem with mags in cert airplanes. Only in these all electric
   airplanes.

   Paul Lamar ...No rotor no motor.


Use two separate switches of the required amperage placed next to each
other.  Wire them in parallel.  Turn them off and on together as the
master switch. You probably could tie the switch toggles together
mechanically with a crossbar if so desired.

The odds of both switches mechanically failing at the same time is
pretty darn low.  If one switch fails, the other switch is rated to
carry the required load and will!

E. Thompson
Up Over


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