nuckolls.bob(at)aeroelect
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 Posted: Wed Aug 01, 2012 5:34 am Post subject: What guage wire for alternator to bus bar |
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At 07:04 AM 7/31/2012, you wrote:
sorry ( i am a newbie to this forum ) if this is already answered
else where, but i would like to know the minimum gauge wire i should
use for a 60amp alternator (15V) to the Bus bar which is 5ft away.
In normal operation max current draw in flight would be 12 amps (
landing lights , nav lights, radio, transponder, solenoids)
6AWG would be good, 4AWG welding cable is
readily available, inexpensive and would
be better.
In addition, (and this may seem like a silly idea), but I actually
want to limit the maximum current that could go into my lithium Ion
Phosphate battery immediately after start up to say 10 amps, how
would I go about this ? Currently it is drawing max amps out of
the alternator for the rotation speed (1200 rpm) for a few minutes,
and I think this was the reason for my alternator drive coupling slipping.
We need more information here. Your alternator drive
system should be designed to function at the alternator's
rated output. In other words, if it slips under some
conditions of loading, then the answer is to fix the
drive system, not reduce the load.
Where does the 1200 rpm number come from . . . prop RPM?
What's the alternator RPM at this time?
Bob . . .
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