 Battery cable size gauge |
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| Harpo |
 Jul 8 2013, 05:51 PM
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Senior Member  Group: Members Posts: 1,304 Joined: 21-August 11 From: Motor City aka Detroit Member No.: 13,469 Region Association: None  |
What size/gauge wire do I need for battery cables? My current one is .35 inch in diameter including the insulation.
http://www.allenelectric.com/referencedata...rence_chart.htm This page suggests I need size 0. That seems rather large Thanks David |
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| stugray |
Jul 9 2013, 06:08 PM
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
QUOTE Most current is carried on the outer surface of a strand of wire. That is not true except for high frequency AC current. Solid wire would be much better in our cars, except stranded wire has better fatigue properties and is flexible. For my whole harness rebuild I used: 4Ga on - battery + to starter battery - to chassis battery to the front fuse panel. 10Ga from Alt to Battery (or to starter if you dont have a cutoff switch). And I have much longer runs because my battery goes through a master kill switch. I tried to use some of the tables that specify wire gauge vs rated current, and the wires were MUCH larger than the stock Porsche wiring harness. You have to take into account - Is the current intermittent (Starter) or continuous (headlights). If continuous, then the rating tables are closer, but: "what gauge is the wire that carries the current to the starter solenoid in the stock harness?" If you figure that out you will see that the Porsche engineers didnt use those tables either..... Stu |
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Posts in this topic
Harpo Battery cable size gauge Jul 8 2013, 05:51 PM
Dave_Darling Mo biggah mo bettah.
Seriously, you want a large ... Jul 8 2013, 08:25 PM Drums66 .....I second these comments! :idea:
:waveby... Jul 8 2013, 11:41 PM Cap'n Krusty The ground cable should be larger than the positiv... Jul 8 2013, 11:54 PM Harpo Thanks everyone Jul 9 2013, 03:46 AM
Retread almost eliminate the need for the hot start relay... Jul 9 2013, 01:36 PM |
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