finkster Posted September 29, 2009 Report Share Posted September 29, 2009 Is it always better to run your ground right to the battery negative? Im hearing so much BS about which is right lately its making me confoosed I can kinda imagine that chassis grounds (for us unibodies) are good only to a certain point, but what about frame rail grounds in larger vehicles? Its kinda tricky, I imagine the frame having a shit ton more surface area on it than a run of 1/0....does it all come down to which has less resistance? I can understand that once you start getting up to like 20kw power you can only run so much through the frame (and especially the chassis). But for most of us in the normal range...say around 1-8kw....which ground is best? Does a straight run of 1/0 have less resistance than a frame rail? I tried to read up on this topic and there was a big debate about it on DIYMA.....but what do u guys believe is correct? oh and heres the link to the thread at DIYMA...I found it to be a good read. http://www.diymobileaudio.com/forum/diy-mo...battery-ok.html Quote DAT 4125------>RE XXX comps active Eclipse cd7000 I serve drunks for a living Link to comment Share on other sites More sharing options...
Rogers Posted September 29, 2009 Report Share Posted September 29, 2009 i would think the frame would be the best... but some people think that a run of 1/0 to the batt is a more direct way... current takes the path of least resistance so... i would think if you did a negative run of 1/0 to the batt and also grounded to the frame.. you wouldnt have anything to worry about... Quote http://www.stevemeadedesigns.com/board/topic/79921-rogers-700-dream-car-update-page-17-a-wall/?p=2335774 93 Saturn SC2My system4 SA-15's Walled 2 Cerwin-Vega S2000's 3 Kinetik Hc2000's Dual 200amp alts. you guys done with the peepee touching contest or do I need to end it? Link to comment Share on other sites More sharing options...
lanman31337 Posted September 29, 2009 Report Share Posted September 29, 2009 Battery without a doubt. If you ground it to the frame, where does it still need to go? The battery. Remove the battery, and the frame is useless. Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
finkster Posted September 29, 2009 Author Report Share Posted September 29, 2009 Battery without a doubt. If you ground it to the frame, where does it still need to go? The battery. Remove the battery, and the frame is useless. Sorry but that doesnt make sense. It is the other way around. The battery is useless without the frame. Remember also that it is but merely a load to the alternator. Imagine the frame of a car compressed into a wire. It would pwn any size wire you can find. Quote DAT 4125------>RE XXX comps active Eclipse cd7000 I serve drunks for a living Link to comment Share on other sites More sharing options...
lanman31337 Posted September 29, 2009 Report Share Posted September 29, 2009 So your frame is going to start and run your car? Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
finkster Posted September 29, 2009 Author Report Share Posted September 29, 2009 (edited) your battery isnt going to run it. the ground is the return path, it doesnt matter whether its a wire or a frame or a chassis....electricity takes the path of least resistance. If its less resistance through the chassis... then the 1/0 wire you ran straight to the battery is useless. Edited September 29, 2009 by finkster Quote DAT 4125------>RE XXX comps active Eclipse cd7000 I serve drunks for a living Link to comment Share on other sites More sharing options...
lanman31337 Posted September 29, 2009 Report Share Posted September 29, 2009 No, the alternator does. The frame is just a conductor for a ground. Same with the body. You need your best connections at the two things that supply your vehicle engergy, your alternator and your battery. Battery is attached to the motor, and where does everything go to? The battery. Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
lanman31337 Posted September 29, 2009 Report Share Posted September 29, 2009 (edited) And I've never seen a chassis with less resistance than a run of 1/0. Frames and bodies are made of steel. They're an ok conductor, but not nearly as good as copper. They've got welds, and things bolted to them, and usually not the most direct path. Edited September 29, 2009 by lanman31337 Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
finkster Posted September 29, 2009 Author Report Share Posted September 29, 2009 ok, not really arguing AGAINST you, more like challenging people to think more on the subject. This was the kind of discussion i was hoping to have....Im not really against the fact that the battery is one of the most important components in the car. Yes I know that everything must return to the neg. Im more stuck on the fact that copper may be a better conductor, but does surface area play a role? I mean is a 8/0 run of steel more conductive than 1/0 of copper? Quote DAT 4125------>RE XXX comps active Eclipse cd7000 I serve drunks for a living Link to comment Share on other sites More sharing options...
lanman31337 Posted September 29, 2009 Report Share Posted September 29, 2009 Surface area does play a role. For example, entrance cable for homes is usually aluminum. Reason is for cost, however, it needs a much bigger surface area for the same amperage. Quote 2 - Audiopipe AP30001Ds 1 - Lanzar Opti Scion 600.4 4 - Lanzar Optidrive 1232D's 1 - Lanzar Opti 5.1 1 - Lanzar Opti 6.1 1 - Lanzar Opti 6C midbass 1 - Alphasonic PCT6551 1 - Lanzar VX830 1 - JBL 22 band EQ 1 - Lanzar SDBT75NU 1 - AudioControl Epic160 Link to comment Share on other sites More sharing options...
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