Peter J BARWICK wrote:
>
> The fuse is there to protect BOTH the device and the wiring. It
> should NEVER exceed the rating set by the device manufacturer which
> will usually have a bit in reserve.
And there's always mysterious exceptions. On one Narco transponder,
they spec 1.6A transmit, but to use a 1.5A circuit breaker. Likely
that's 1.6A at it's max reply rate of 1200/second, which is
impossible. But the box has a pwr out pin for an encoder, and they
forgot to tell you to allow for that!
UPSAT settles the issue with a fusible link on the board, cause they
just know even a professional installer might spot an unused 5A
breaker and....
The best example for concern here might be that electric fuel pump.
Experiments on the effect of boiling fuel inside of it are best left
to laboratory conditions rather than in flight.
Regards,
Fred F., A063
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