Peter Dohm wrote:
....
I've been reading this thread with modest interest and a little amusement.

At the moment, I am not entirely sure why a "typical" homebuilt would use a
master contactor and I suggest that you take a look at what the professional
designers may have done. For example, to the best of my recollection, the
Cessna 150 and 152 and also the Piper Tomahawk had starter contactors (a/k/a
solenoids) and a had master breakers that also functioned as switches; but
did not have master contactors--and I really have difficulty understanding
why a well designed aircraft in that size and weight range would need one./snip/

Peter



Hmmm...as it happens my C150 doesn't have a starter solenoid - its a
pull handle; but it does have a master contactor, like the vast majority
of airplanes, large n small.

Brian W