Re: Alt Field Circuit Breaker Popping
That’s not quite correct. The 50a breaker connects the output of the alternator to the bus always unless it is tripped or pulled. Even with engine not running and regardless of the field/regulator being powered. Without voltage at the alternator field the alternator will not produce any current. The bus voltage at alternator output will not result in the alternator drawing any current from the bus because the internal diodes in the alternator block current from going “into” the alternator output.toggle quoted messageShow quoted text
A failed alternator with shorted diode(s) (there are typically 6) will cause the 50 amp breaker to trip as soon as the master switch is on.
The 50mp amp breaker is there for 2 reasons. One, to protect the alternator from producing too much power. Two, to protect the battery should the alternator diode(s) fail.
Sonia and Rick Hole
On Jul 31, 2019, at 1:52 AM, Corbin Geiser c_geiser@... [Q-LIST] <Q-LIST@...> wrote: