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Re: 65A Alternator; wire concerns....

To: spitfires@autox.team.net
Subject: Re: 65A Alternator; wire concerns....
From: Dan Canaan <flinters@picarefy.com>
Date: Sat, 14 Dec 2002 12:03:28 -0800
An alternator is a load sensing current-dependant charging device.  It may 
be rated at 65 amps, but that is only what the maximum charging rate 
is.  The alternator will only charge at a current high enough to match the 
load put on it including recharging the battery back to normal.  Since the 
battery is the heaviest drain on the system (outside of headlights and any 
other unintentional shorts to ground that Lucas built in), a heavier guage 
wire (10 ga is good) from the alternator main terminal to the battery is 
suitable.  In such cases, the heavier, the better.  If you plan on using 
any high current devices like added on lights, high power stereo or 
communications equipment, tap into the main cable and not rely on any of 
the existing wiring to do more than what it was asked to do originally.

And as for that alternator, it goes by a lot of names-  A127, 7127, 
etc.  The case is unique and immediately identifiable as it is used on so 
many vehicles including GM, Vauxhall, International, Rover, and many other 
autos and industrial equipment including earth movers, forklifts, etc.


-Vegaman Dan

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