gauge of wire for Alternator to battery?

2percenter · 05-16-2012, 08:42 PM

What gauge wire would you guys use for a 1 wire 140 amp alternator lead to the battery positive side mounted at the rear of the car?
Is #10 gauge alright?

pmrphil · 05-16-2012, 09:15 PM

I believe that #10 wire will only carry 30 amps, can't imagine 140 going thru that small of a wire - maybe a #6 is enough? I would think that should be a lot closer.

Alan Roehrich · 05-16-2012, 09:42 PM

Six or eight gauge, minimum.

Chad Rhodes · 05-16-2012, 10:18 PM

I've got a #6 but my battery is in the front

Run to Rund · 05-17-2012, 01:04 PM

20' long wire for 140 amps would be 0 gauge. See the table in this thread on yellowbullet:
http://www.yellowbullet.com/forum/sh...ad.php?t=47266

2percenter · 05-17-2012, 02:32 PM

Okay, so 6 or 8 gauge it is. I was lead to believe that 10 gauge was enough for the field stud from the alternator to the battery. Yes, the battery is in the trunk.

What type of wire is good? crosslink? solid strand?

05-16-2012, 09:15 PM	#2
pmrphil Member Join Date: Aug 2010 Location: CT Posts: 383 Likes: 1,250 Liked 247 Times in 106 Posts	Re: gauge of wire for Alternator to battery? I believe that #10 wire will only carry 30 amps, can't imagine 140 going thru that small of a wire - maybe a #6 is enough? I would think that should be a lot closer. __________________ Phil Molski S/C 1623

05-16-2012, 09:42 PM	#3
Alan Roehrich VIP Member Join Date: May 2006 Location: Murfreesboro TN Posts: 4,907 Likes: 993 Liked 1,032 Times in 270 Posts	Re: gauge of wire for Alternator to battery? Six or eight gauge, minimum. __________________ Alan Roehrich 212A G/S

05-16-2012, 10:18 PM	#4
Chad Rhodes VIP Member Join Date: Jan 2005 Location: Where the Green Grass Grows, AL Posts: 2,375 Likes: 0 Liked 3 Times in 3 Posts	Re: gauge of wire for Alternator to battery? I've got a #6 but my battery is in the front __________________ Chad Rhodes 2113 I/SA

05-17-2012, 01:04 PM	#5
Run to Rund Senior Member Join Date: Sep 2007 Posts: 574 Likes: 6 Liked 44 Times in 22 Posts	Re: gauge of wire for Alternator to battery? 20' long wire for 140 amps would be 0 gauge. See the table in this thread on yellowbullet: http://www.yellowbullet.com/forum/sh...ad.php?t=47266

05-16-2012, 08:42 PM	#1
2percenter Junior Member Join Date: Apr 2012 Posts: 14 Likes: 0 Liked 0 Times in 0 Posts	gauge of wire for Alternator to battery? What gauge wire would you guys use for a 1 wire 140 amp alternator lead to the battery positive side mounted at the rear of the car? Is #10 gauge alright?

05-17-2012, 02:32 PM	#6
2percenter Junior Member Join Date: Apr 2012 Posts: 14 Likes: 0 Liked 0 Times in 0 Posts	Re: gauge of wire for Alternator to battery? Okay, so 6 or 8 gauge it is. I was lead to believe that 10 gauge was enough for the field stud from the alternator to the battery. Yes, the battery is in the trunk. What type of wire is good? crosslink? solid strand?