why 2 strand of 1/0?

[trashedxj 10+ year member]

ok front batt to back batt, why 2 strand 1/0 like everyone claims is so great? say i got a 260 amp alt?(saving for it now, dc power) ok so my alt cant do any more than 260 amps so run a 1/0 to the back batt put a 300 amp fuse at each end 1/0 can flow 260 im sure no problem so if you cant flow any more than 260 why put 2 strands of the 1/0? i dont see where it would flow any faster nor could it flow more amps? so when i do my next system( thinkin 4 15's and minimum 5k watts prolly more like 8 and a 260 amp alt, one deka up front, and one per 2 amps in rear for a total of 3 dekas, im thinkin one power 1/0 to the back then one from that batt to the next batt and ground it all to chassis( some run 1/0 ground to the back i see no point what so ever unless someone can show me proof of it makin a noticable difference) as long as i got good grounds where used i see it being fine and 260 alt and 3 dekas should power this with around no more than a drop to 13.8 right?

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[01 S 10 10+ year member]

5kw-8kw and only drop to 13.8... lol, not gonna happen with 260amp alt. your batteries will rest in the high 12's, thats probably where your will drop to unless you had a few alternators that could put out the amperage you will be pulling with that much power. what amps? most 3,000w amps say they need about 250-300a, so say 500a for 6kw, you will need 2 of your alternators to keep the voltage above 13 if your truly pulling that much power

 

[smoka 10+ year member]

some run 1/0 ground to the back i see no point what so ever unless someone can show me proof of it makin a noticable difference

The idea is to get the least resistance. The lower the resistance of the power wire AND ground wire then the less voltage you will lose.

The ground is especially important because electrons flow from negative to the positive terminal. Also remember that electrons will flow to the path of least resistance.

If you ground only through your chasis you are using the steel as a conductor. Steel is not a great conductor and will have a high resistance. The some of the best conductors are gold > copper > aluminum > steel. Gold is too expensive so usually copper is chosen. So if you run a large enough copper wire, your voltage drop will be less than if you just grounded to steel.

 

[PSturmer 10+ year member]

ok front batt to back batt, why 2 strand 1/0 like everyone claims is so great? say i got a 260 amp alt?(saving for it now, dc power) ok so my alt cant do any more than 260 amps so run a 1/0 to the back batt put a 300 amp fuse at each end 1/0 can flow 260 im sure no problem so if you cant flow any more than 260 why put 2 strands of the 1/0? i dont see where it would flow any faster nor could it flow more amps? so when i do my next system( thinkin 4 15's and minimum 5k watts prolly more like 8 and a 260 amp alt, one deka up front, and one per 2 amps in rear for a total of 3 dekas, im thinkin one power 1/0 to the back then one from that batt to the next batt and ground it all to chassis( some run 1/0 ground to the back i see no point what so ever unless someone can show me proof of it makin a noticable difference) as long as i got good grounds where used i see it being fine and 260 alt and 3 dekas should power this with around no more than a drop to 13.8 right?

one large reason for lots of wire is for competing. on the meter it can make a difference. if its to the ear daily not so much. why run full ground? because it makes sense to. simply put, the negative resistance is just as important as the positive. with a setup like yours i would run 4 runs minimum. 2 pos to pos and 2 neg to neg.

 

[Kicker Guy 10+ year member]

one large reason for lots of wire is for competing. on the meter it can make a difference. if its to the ear daily not so much. why run full ground? because it makes sense to. simply put, the negative resistance is just as important as the positive. with a setup like yours i would run 4 runs minimum. 2 pos to pos and 2 neg to neg.

9 times out of 10 a FRAME ground is just as good as running a ground back to the front.

 

[trashedxj 10+ year member]

ok the original plan was 4 kicker zx2500.1's then i though maybe get some kicker amps around 2k each but then i figure im runnin 2 zx750.1 now and they claim to be over 900 each so this is the most i've ever run(and i only drop to 13.8 with stock 90 amp and 7 year old generic battery) so i was thinkin baby steps, maybe jus do 4 zx1000.1's one 260 amp alt and then the 3 dekas. should i be fine then with 4k watts(bein kicker i would imagine close to 5k since there under rated as hell!

 

[UCbizerkeley 10+ year member]

im not an expert, but i think that makes sense.

ps my cruiser would thrash your jeep

 

[93dakota 10+ year member]

The reason for needing a second run is simple. first like every one said it is less resistance which equals more power and running the ground to the front bat is always the best plan. Second if you plan on running 4k watts or more it is a safety thing. at the distance that you are going to be running the wire most 1/0 gage brands are only rated between 300-350 amps. with 4k watts at full tilt you are running 333 amps and that is assuming that your amp is not under rated. If you draw more than that you could melt your wire and worse case cause a fire.

 

[HairyBallzONYA 10+ year member]

i would go with 2-2500.1's instead of 4-1000.1, prolly around the same price, then you have some head room.

 

[Buck 5,000+ posts]

9 times out of 10 a FRAME ground is just as good as running a ground back to the front.

No. Maybe if you have a weak ass system. In his case, running grounds to the back will help.

 

[trashedxj 10+ year member]

im not an expert, but i think that makes sense.
ps my cruiser would thrash your jeep

wow nice tip ****! your "cruiser?" you mean race...yeah im sure anything will smoke a jeep, i smoke hondas but what pinto cant do that but either way after you win the race i could redeem myself and crawl on the hood and laugh so yeah injoy sittin low bud! now back to the audio....ya know....the thing this website is made for and all about! good job you fail at life now go cry yourself to sleep on your c*ck shaped pillow and **** your thumb while momma reads you a story!

 

[trashedxj 10+ year member]

i would go with 2-2500.1's instead of 4-1000.1, prolly around the same price, then you have some head room.

cant do that unless i got dual 2 ohm to run it at 4 ohms then 2 subs per amp which in the long run when i wanna run the subs at 2 ohm i cant cause i dont have dual 1 ohms! oh yeah going with fi's and kicker amps and kicker only does 2 ohm so i cant get 2 2500's now and be able to up my power with the same subs later on! im gettin the fully loaded fi's so i can build small for now(4-5k watts) but upgrade later on when i get a second alt and run bigger(10-15k watts)

 

[UCbizerkeley 10+ year member]

wow nice tip ****! your "cruiser?" you mean race...yeah im sure anything will smoke a jeep, i smoke hondas but what pinto cant do that but either way after you win the race i could redeem myself and crawl on the hood and laugh so yeah injoy sittin low bud! now back to the audio....ya know....the thing this website is made for and all about! good job you fail at life now go cry yourself to sleep on your c*ck shaped pillow and **** your thumb while momma reads you a story!

man you just got affected, i was just playin. not talkin about any races man, just talkin about my fzj80 land cruiser buddy.

anyways, peace, and GL with the install

 

[trashedxj 10+ year member]

man you just got affected, i was just playin. not talkin about any races man, just talkin about my fzj80 land cruiser buddy.
anyways, peace, and GL with the install

didnt get mad really, but when your broke got bills, 4 kids, and get what you can buy i take offence when people trash on what i can afford!

 

[PSturmer 10+ year member]

9 times out of 10 a FRAME ground is just as good as running a ground back to the front.

maybe installing 500watt systems....if that