Bigger fuse
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=64267
Printed Date: April 28, 2024 at 6:07 PM
Topic: Bigger fuse
Posted By: Reeceddogg
Subject: Bigger fuse
Date Posted: October 12, 2005 at 9:28 PM
i'm in the process of building my new system that so far consist of two directed 2400d that are 2400 rms@ 2ohms and theyt each use a 200a fuse. I've seen anl fuses as big as 300a but the total of my system is close to 500a how should i fuse this and what size wire should i be using maybe two 0 gauges?
Replies:
Posted By: Reeceddogg
Date Posted: October 12, 2005 at 9:39 PM
also does any one know if i should run 0 or 4 gauge to the amps
Posted By: skoldspuppy
Date Posted: October 13, 2005 at 9:20 AM
Reeceddogg wrote:
also does any one know if i should run 0 or 4 gauge to the amps
I would run 0 gauge to a distrubition block and then 2awg or 4awg to the amps itself, It really all depends on what gauge the amp will accecpt on its power terminal --Skold ------------- 2004 Honda Civic Ex 4Dr
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Posted By: godblessdremil
Date Posted: October 13, 2005 at 10:55 AM
Ya get the zero gauge 4 gauge deffinetly will not handle 400 amps. I would have a 0 going to a block and then use 2 gauge on the amps. And a fuse big enough does exist for 500 amps but there like 80+ a pop so i would suggest a circut breaker. I would do this for just the amps i would run another cable for the other stuff. As for the fuse a main one 6 inch from the power source to protect the wiring. And judging by taht power i am guesing you have an aftermarket alternator and probally another battery right?
Posted By: Reeceddogg
Date Posted: October 13, 2005 at 12:43 PM
the circuit breaker i've only seen up to 400a where could i get a bigger one. So i'm going with 0 gauge from the battery which if all goes as planned a kinetik 2400(2600amps)to circuit breaker to fused dual 200a anl dist block in trunk too two gauge to each amp. plus a seperate power wire, probably just 8 gauge, for rear tv's, tv tuner, crossover,and ps2. that all total around 30 watts.
Posted By: Reeceddogg
Date Posted: October 13, 2005 at 12:51 PM
is it possible to wire a set of fuses together to equal total current draw
Posted By: Reeceddogg
Date Posted: October 13, 2005 at 12:55 PM
the biggest circuit breaker i've actually found was 200a from stinger so could i wire two of them in parellel to acheive my 400a requirement
Posted By: DYohn
Date Posted: October 13, 2005 at 2:53 PM
Reeceddogg wrote:
is it possible to wire a set of fuses together to equal total current draw
No. But you can run two separate cables, one for each amp, each one fused for the cable. Remember the fuse you use on your main power cable is not for the amps, it's for the cable and to keep you from burning up your vehicle. You need a fuse large enough so that the amps running normally will not blow it, but small enough so it is below the current rating of the cable. The fuses inside the amps will protect the amps. And don't forget your grounds which must also be able to carry full load current. I assume you are putting together a massive alternator system for this? Running multiple alts, maybe? ------------- Support the12volt.com
Posted By: Reeceddogg
Date Posted: October 13, 2005 at 3:07 PM
so i should run 2 2awg to each amp and then another for my highs. thats a lot of wires.
Posted By: DYohn
Date Posted: October 13, 2005 at 3:23 PM
Yes it is. You're trying to do a big system. Again, how are you planning to power this? ------------- Support the12volt.com
Posted By: stevdart
Date Posted: October 13, 2005 at 6:44 PM
.......still waiting....... Reeseddogg is thinking "Huh, alternator??" ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: gus1
Date Posted: October 13, 2005 at 8:05 PM
That's what I'm wondering. We install a lot of the 2400's at a 2ohm load. Usually run 4ga back to the amp, throw in an 80A fuse, and never have a problem. I mean, even running 2 of them, unless he is hammering them balls out all day long at 1 ohm, should still be good on 0ga, or even 2ga back to distribution, 4 over to the amps (what's the rating on 4ga for 3 feet?? 200A??) Park a 200A breaker at the battery (like a stock alternator is going to produce anything close to that anyways.... be lucky to get 100A out of a CS130 on a GM, this is probably an import with an 80A under the hood).
This should be good....
Gus
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Wherever I go, that is where I end up......
Posted By: Reeceddogg
Date Posted: October 14, 2005 at 10:48 AM
i'm going to have a seperate alternator for my kinetik 2400. i also have a batcap 400 and was thinking of getting the batcap 800. so i'm going to do 0 to trunk. from there 4ga(is that big enough)to amps. plus i'm going to run a seperate 4 gauge for my 5 channel and crossover and other accy's. Fused 300a under hood and dual 150a for the directed's. please give may any advice as i'm sure i'm overlooking something. i'm running 2 directed 2400d and two pioneer 12" ts-w5000spl. i need ideas for a x-over i was looking at the audiocontrol eqt and 3xs or 4xs. the car is a 03 taurus and i'm having the subs firing into the car vented
Posted By: Reeceddogg
Date Posted: October 14, 2005 at 10:51 AM
also while doing the big three upgrade when i ran new wire from the alternator to the fuse box i noticed a oem 175a fuse what or should this be upgraded to.
Posted By: Reeceddogg
Date Posted: October 14, 2005 at 10:56 AM
i've been trying to get a ho alternator for a while but with no luck for my car. can ne body help?
Posted By: Reeceddogg
Date Posted: October 14, 2005 at 11:06 AM
also how do i check for, acheive close to/0 resistance
Posted By: Reeceddogg
Date Posted: October 14, 2005 at 11:26 AM
just one more thing does anyone recommend a different amp.
Posted By: DYohn
Date Posted: October 14, 2005 at 12:07 PM
Reeceddogg wrote:
also while doing the big three upgrade when i ran new wire from the alternator to the fuse box i noticed a oem 175a fuse what or should this be upgraded to.
This is probably the vehicle's main fusible link. Do not touch it. So I get from your jumble of one-line posts that you are planning to run two alternators? Who is setting this up for you? If you (or your mechanic) are skilled enough to set up multiple alternators with all the attendant voltage regulator issues, mounting brackets, new belts, new engine wiring, etc., then I don't understand why you posted the very basic question about fuse sizes. An auto electrician capable of setting up multiple alts would know how to answer this. Or are you doing it yourself? If you have never done this before, I strongly recommend you get help from a professional shop as it's not as simple as just slapping it in there... If I misunderstood something please set me straight. ------------- Support the12volt.com
Posted By: DYohn
Date Posted: October 14, 2005 at 12:08 PM
Reeceddogg wrote:
also how do i check for 0 resistance
Uh, with an ohmmeter..... ------------- Support the12volt.com
Posted By: Reeceddogg
Date Posted: October 14, 2005 at 5:47 PM
i'm not doing it myself and a mechanic is doing it for me i'm just getting everything myself since he's doing it for free. And i have a dmm i just wanted to know the best location to check.....
Posted By: DYohn
Date Posted: October 15, 2005 at 8:40 AM
To check for ground resistance, measure ohms between the amplifier ground terminal and the battery ground terminal. I recomend disconnecting the positive battery terminal first just in case. Ideally this reading will be less than 1 ohm, although in reality readings up to a couple of ohms can be fine. Glad to hear you are being assisted by a mechanic. I'd ask him or her what they want you to buy. ------------- Support the12volt.com
Posted By: Reeceddogg
Date Posted: October 15, 2005 at 12:31 PM
what do you all think about two crossfire vr1000d bridged that would do 2000rms@ 2ohm(12.5v). Think it'll sound better than the directed 2400d? or maybe another amp?
Posted By: gus1
Date Posted: October 15, 2005 at 2:39 PM
The DEI makes a lot of power.....
As far as "sound"? A properly designed amp shouldn't "sound" like anything....
Gus
-------------
Wherever I go, that is where I end up......
Posted By: Reeceddogg
Date Posted: October 15, 2005 at 10:19 PM
sorry... i'm setting up a high spl system
Posted By: Reeceddogg
Date Posted: October 15, 2005 at 10:38 PM
maybe i'm missing something but how can i have too amps using 200a fuses each be fused at the battery with a fuse less than the total amperage of the system. wouldn't that restrict the amount of current going to the amps an thus make the fuse blow. I'm confused now since i went to a local shop, that 45 mins away, and he one solox 18 and two Colossus amps with only a 150a fuse at the battery. also he didn't change his alternator and had four batteries. a kinetic 2400(that i plan on getting myself), and optima red top and yellow top. all three were in the trunk plus he had his stock battery under the hood.
Posted By: stevdart
Date Posted: October 16, 2005 at 8:22 AM
I don't get what you're asking here. Why tell us about some guy's system you looked at? I didn't read anything here from anybody that told you to fuse the main power at less than the amps' fuse ratings....maybe you should re-read DYohn's posts...
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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: Reeceddogg
Date Posted: October 17, 2005 at 10:30 AM
gus1] wrote:
We install a lot of the 2400's at a 2ohm load. Usually run 4ga back to the amp, throw in an 80A fuse, and never have a problem. I mean, even running 2 of them, unless he is hammering them balls out all day long at 1 ohm, should still be good on 0ga, or even 2ga back to distribution, 4 over to the amps (what's the rating on 4ga for 3 feet?? 200A??) Park a 200A breaker at the battery (like a stock alternator is going to produce anything close to that anyways....
Gus
this is what i was refering to. but i went to a shop to try and get some more info and he told me that. I'm just trying to see who's right.
Posted By: Alpine Guy
Date Posted: October 17, 2005 at 11:55 AM
Got money? Good, here's how you do it, 1), purchase a 200+ amp alternator, 2) get a big battery kinetik comes to mind, 3) run 2 runs on 1/0 awg both fused at 350 amps each (anl fuse), then run them to a distrobution block that has 2 1/0 awg inputs and 4 4 awg outputs, fuse each 4 awg output to 125-150 amps "midi fuse" 4) Dont forget to do the big 3 with 1/0 awg 5) Spend hours/days/weeks building your box, your spending this much money, so be shure to have the best dam box's available.
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2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.
Posted By: Reeceddogg
Date Posted: October 17, 2005 at 3:15 PM
that's all i needed to know
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