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Wire sizes.


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skyace4 
Member - Posts: 18
Member spacespace
Joined: March 02, 2003
Location: United States
Posted: May 03, 2005 at 9:54 PM / IP Logged  

I am installing a 200 A. alternator in a 2003 Chevy S-10 4.3 L. engine and the factory 100 A. alternator is a 8 Ga. wire to the starter, is it necessary to put a heavier wire to the starter to allow 200 A. to go to the battery for charging?

Seems that GM did not have a larger CS130D alternator from Delphi so I had to go after market.

I have 8 Ga. wire going to the starter and 8 Ga. wire from the engine block to the frame.

Thanks.

fastone 
Copper - Posts: 83
Copper spacespace
Joined: January 01, 2005
Location: United States
Posted: May 04, 2005 at 10:55 AM / IP Logged  

Your starter wire should be fine. It will still pull the same amount of current unless you have installed a much larger heavy duty starter. Your ground should be sized for 200 amps because it carries all of the current load for the entire car. That is a 2 awg. Make sure your wire for you stereo, amps, etc, is large enough to handle their current draw. Use this chart to be sure.

https://www.the12volt.com/info/recwirsz.asp

Famous last words: Hey man, what's this wire do?
fastone 
Copper - Posts: 83
Copper spacespace
Joined: January 01, 2005
Location: United States
Posted: May 04, 2005 at 11:04 AM / IP Logged  
OK, I have sufficently confused myself now. Isn't this the same question I just answered in a separate post? And to elaborate on that a little bit, you said the alt. output wire, not the starter wire from the battery. The alt. output wire should be sized for 200 amps as well as the ground.
Famous last words: Hey man, what's this wire do?

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