[DeTomaso] Electrical question
SOBill at aol.com
SOBill at aol.com
Thu Mar 4 19:56:09 EST 2010
Some one wire alternators can be used as one wire (load only) or three
wire (load, indicator, and battery reference). If Powermaster says their
alternator can't connect to the indicator and use a battery reference, I would
assume they know what they are talking about. Look on the body of alternator
and see if you find an unused connector with two pins in it.
The only time the alternator would be pumping out 100A is if it is trying
to charge a dead battery. If you make sure you don't try to use the
alternator to charge a dead battery, and you haven't installed megawatt audio
boomers, the standard Pantera wiring is adequate for the standard Pantera loads.
The alternator only puts out enough current to support the actual load at
the desired battery voltage.
Running a wire second wire from the alternator to the battery wire on the
starter solenoid (and thus to the battery) will make the ammeter useless
because the battery voltage will be connected to both side of the ammeter.
SOBill Taylor
sobill at aol.com
In a message dated 3/4/2010 4:35:07 P.M. Pacific Standard Time,
MikeLDrew at aol.com writes:
Hey Bill Taylor and other electrically smart people,
Johnny Woods asked me to ask a question on his behalf. He's installing a
Powermaster 100-amp alternator on his car; he bought a one-wire model but
now wants to convert it to three-wire operation. He talked to the
Powermaster tech line and they told him it wasn't possible, which I find
difficult to
believe.
At the same time, they told him that the factory wiring wasn't up to the
task of handling 100 amps, and advised him that he should run TWO power
wires
from the alternator; the second should run from the alternator output
directly to the battery cable on the starter solenoid (and thence back to
the
battery).
Their premise is that by doing so, a percentage of the alternator's output
would run through the ammeter, to the battery, while the rest would bypass
the ammeter.
This sounds totally hokey to me, and completely unnecessary. What say
you, electrically smart people?
Please, please hit 'reply all' so your replies will be seen by Johnny, who
is on the PI forum but not this one.
Thanks!
Mike
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