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John
Slade wrote:
My
understanding is that the pumps, at least the ones I'm using (or at least WAS
using when I used to be able to fly this #@#$ing
thing, long ago), are designed to run continuously. I have one Walbro
Inline fuel pump-GSL393 (from Tracy) and one Walbro Inline fuel
pump-GSL394 from Lightning Motorsports. Both have metal screw in connectors
which fit AN adapters. They're fused at 20 amps.
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OK,
I'll stir the pot some more. I am not an electrical engineer, but I do
understand the power of redunancy!
I will
take two separately fused circuits over 1 circuit breaker every day of the week.
If there is a short in my one device or in the power supply lines, I do not wish
to be starting a fire by resetting circuit breakers while looking for a glider
port. I know there are rotary powered airplanes out there that depend on one
circuit breaker for the entire electrical engine power source that have many,
many more hours of rotary time than me, but I sleep better have two parallel
circuits bringing electrical power to my fused engine buss and then reduntant
pumps on entirely separate fused circuits. My pumps are both checked during run
up and both on during T/O and landing.
Bernie
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