I've been using the "Aircraft Wiring Guide" by Marc Ausman to learn more about electrical system design for my KF.
The basic power circuit he describes has the battery as input to the master solenoid and the input to the starter solenoid
comes from the output of the master solenoid. I'm guessing, then, that the master solenoid has to support the same
current capacity as the starter solenoid. It looks to me that most master solenoids have a much lower current
rating than starter solenoids.

For example, this starter solenoid can handle up to 300 amps continuous:

https://www.aircraftspruce.com/catal...clickkey=11134

but this master solenoid only handles 100 amps continuous:

https://www.aircraftspruce.com/catal...?clickkey=5553

Do I need to ensure that the master solenoid can handle the same current as the starter solenoid if I wire them in series?
Or do most people connect the starter solenoid directly to the battery?

Victor