How many runs of 1/0 for......

[chipstien]

So I am getting ready to start in on the stereo in my Volvo. Going to use Knukonceptz Kollosus Fleks OFC 1/0. My question is, how many runs will I need from my front battery to the back battery? Is one sufficient? Or should I run two? Not planning on running a ground back as I will Do the Big 3 with the left over 1/0 and then use the car as ground. As for Amps... I am still undecided as to what I want to do but the biggest I am leaning towards is either a Crescendo 5500 to two 15's or one 3500 to one 18 with the plans of strapping another 3500 at a later date to up the power. There will also be a 4 channel for the separates but I'd imagine that is negligible. As for what I am doing with the car.... I won't be competing or anything, I just want it to be a loud daily driver.

If you need any info just let me know. Thanks.

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[LosIsATool 5,000+ posts]

2 runs and a HO alternator and atleast 2 big AGMs, should be a nice daily setup. Im thinking about strapping 2 BC2Ks know but I need to add 1 more run myself

 

[infamous_e46 5,000+ posts]

 

[Kangaroux 5,000+ posts]

IMO anything after 2500w should have both a dedicated positive and negative run to the back. OFC 1/0 is rated for 300A, on a 13.8v system that supports roughly 4k. Personally, I would do a run for every 3500w just to be safe. You can also save on cost and instead of doing multiple 1/0 runs do a single 2/0 or even 3/0 run. weldingsupply.com has some good prices for OFC wiring

 

[kramer_212 10+ year member]

stinger also makes a oval 3/0 you can get it on ebay for a reasonable price.

 

[chipstien]

IMO anything after 2500w should have both a dedicated positive and negative run to the back. OFC 1/0 is rated for 300A, on a 13.8v system that supports roughly 4k. Personally, I would do a run for every 3500w just to be safe. You can also save on cost and instead of doing multiple 1/0 runs do a single 2/0 or even 3/0 run. weldingsupply.com has some good prices for OFC wiring

i'd consider welding cable being that i can get 3/0 for the same price. but my concern is finding a fuse block that will fit that size wire, not to mention what size fuse would i need? Know of a Battery post that accepts 3/0?

Also why run dedicated ground to the back if you upsize the ground from the stock battery to whatever you are running to the back? Not calling you out... just curious if there is a electrical reason for it. Thanks for the Welding supply link. Searched Ebay for welding wire and the prices were horrid. I couldnt figure out why someone would pay more for welding cable over high end speaker wire. these prices are much better though.

 

[Kangaroux 5,000+ posts]

i'd consider welding cable being that i can get 3/0 for the same price. but my concern is finding a fuse block that will fit that size wire, not to mention what size fuse would i need? Know of a Battery post that accepts 3/0?
Also why run dedicated ground to the back if you upsize the ground from the stock battery to whatever you are running to the back? Not calling you out... just curious if there is a electrical reason for it. Thanks for the Welding supply link. Searched Ebay for welding wire and the prices were horrid. I couldnt figure out why someone would pay more for welding cable over high end speaker wire. these prices are much better though.

Any kind of threaded posts will work, and on a battery with the "standard" terminals you can get a battery term with a bolt in it and attach the 3/0 that way. As for fuse blocks you will have to make your own, you can look at some of the bigger builds and you might be able to see how they did it.

 

[Kangaroux 5,000+ posts]

i'd consider welding cable being that i can get 3/0 for the same price. but my concern is finding a fuse block that will fit that size wire, not to mention what size fuse would i need? Know of a Battery post that accepts 3/0?
Also why run dedicated ground to the back if you upsize the ground from the stock battery to whatever you are running to the back? Not calling you out... just curious if there is a electrical reason for it. Thanks for the Welding supply link. Searched Ebay for welding wire and the prices were horrid. I couldnt figure out why someone would pay more for welding cable over high end speaker wire. these prices are much better though.

Any kind of threaded posts will work, and on a battery with the "standard" terminals you can get a battery term with a bolt in it and attach the 3/0 that way. As for fuse blocks you will have to make your own, you can look at some of the bigger builds and you might be able to see how they did it.