What WIRE GAUGE SIZE for amplifier install? How to calculate!

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When we install a car audio system with an amplifier we need to properly choose the right wire size gauge for our power and ground wires. The calculation for power and current is easy! Let's learn how to choose our wire gauge for our amps and find out if we need to use 8 gauge, 4 gauge, or 0 gauge (or maybe even larger!)
2:45 - Chart for wire size. To learn more about the chart and the process for wire size visit our friends at Crutchfield: www.crutchfield.com/S-FPqP4lA...
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@CarAudioFabrication 4 года назад

😎 Enjoy this video? Here are some other related videos to this topic: 👉How to plan a full electrical system: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-NixHUNo0YII.html 👉Car Audio Electrical System Basics: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-XSsOPu6gHmQ.html 👉Installing a two amplifier system: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-tkN460BMB5M.html

@airon6864 4 года назад

So having a fuse popping issue but I think I fixed it. Lose connection. I have a kicker 1200.1 going to a Kicker L7Q class 12inch. What gauge wire should I use for it?

@juanmrn27 3 года назад

Can you leave a link to where we could buy a wire kit with that OFC cable

@Melvinreed80 Год назад

Man I need your help I got a problem and can’t figure it out I been hooking up amps and subs and head units since I’ve been 15 years old and now im 42 but I am stumped on this one lol ok here’s me problem I have a 2010 accord coupe with aftermarket android head unit that runs off my factory head unit tried to hook up amp and subwoofers RCA because factory unit doesn’t have them no I got a converter box everything work and turns on but have noise when driving and big thump when I turn off car

@hankcarrillo1494 Год назад

Mark if I use a 8 ga instead of the 4ga will it cause the amp to go into protection mode? Thanks

@ryleighrukovska7261 4 года назад

I never realized how insanely something mundane like audio wires could be so expensive but also so very vital 😭

@TheDstacksondeck 3 года назад

Look at sky high car audio. They’re very reasonably priced

@josecunsako31 3 года назад

I thought same shit lol

@jakeppthegod5565 2 года назад

36$ is not a lot u trippin

@Strykenine 4 года назад

Great to hear you talk about Ohms law - it's the basis of every electrical system on the planet. My electronics instructor was retired USAF and he did a great job teaching me. It's good to see someone paying it forward Mark!

@travisabrahamson5092 3 года назад

I used knukonceptz 0 gauge cca kit to wire up my 1200 watt rms amp to run 4 kenwood excelon 10's . After watching videos from CAF I was convinced I made the wrong decision. Then I watched the video about checking voltage drop. I have 0.03 voltage drop between battery and amp. 14.48 at battery and 14.45 at amplifier. Now I am convinced that as long as you over size the cca it is all good 😎

@renaissanceman7145 2 года назад

The problem with CCA isn't voltage drop it's longevity. The more heat cycles CCA goes through the harder it gets. Hard = Brittle. At some point CCA wire WILL crumble, usually at hard bends first. At those places the wire will get hot enough to potentially start a fire. This is no joke. I've seen it first hand. CCA is fine for jumper cable but it is absolutely dangerous for daily use, high current, car audio power supply wire. Use 100% copper welding cable. Yes, it's more expensive but the US made stuff is super flexible, can be had in some cool colors, it can be had incarcerated sizes and when protected from oxidation it will last longer you. Before you sell that car get that copper cable out and use it in your vehicle. I sincerely hope you act on my advice and get that CCA wire out of your vehicle because it WILL fail. The only unknown is when. All the best

@Knackersjewels 2 года назад

That chart is exactly what I've been looking for, thanks so much

@Gus247365 4 года назад

Just about to start wiring in a couple of amps, a DSP etc. this is really helpful - thank you!!!

@juanaviles7099 4 года назад

Awsome video really helps out alot. Each day im learning more and more about car audio. Im new on doing car audio for about a year now so is alwats nice to look at videos from someone who knows what their doing, keep posting more amazing videos. And Keep up the good work, Ive learn alot from you. Thanks again, From avilescaraudio!

@Hoppysjunkyardrally 4 года назад

Excellent Video!! by far the best explanation on this subject i have watched!

@frankg5714 4 года назад

Awesome info. Just bought my amp kit with knuKonceptz.

@jeweldey3699 4 года назад

Loved the vid! Really good information for building a car audio system. Thanks! Been putting in audio systems in my cars since the late 80’s. Would love to see a video about adapters for steering wheel controls for aftermarket head-units. That's a challenge I didn't have back in the day.

@dennishelman8262 3 года назад

Steve Meade did one in a Yukon

@brapbrapmafucka 3 года назад

i just did one in a 2012 corolla. it was quite a challenge lol. I used an Axxess ASWC-1 module and my deck is a kenwood x304 and I had to make a few phone calls. Worth the hassle though

@cmoney2259 2 года назад

Thanks Mark as always great video and very detailed information I reference your videos all the time still new to car audio but learning a lot

@foodchainlures7543 2 года назад

You saved me money again Mark. I’m using a JL Audio HD 1200 and an Alpine PDX f4 drawing 150 amps total. I have approximately an 8’ run of 4 gauge OFC power wire running into a distribution block splitting to less than 2’ of 4 gauge to the JL and about 2’ of 8 gauge OFC to the Alpine. According to your chart, I’m good to go. I’m in the process of revamping my system, and I’ve been watching many of your videos. You are a great teacher with an impeccable work ethic. Keep up the great work!

@chicken133221 4 года назад

The information I was looking for. Tinned ofc will be what I need for my polaris slingshot.

@user-TurboD12 Год назад

First off. Your videos have made me into a better car audio guy. I have learned more from your videos and discussion than reading the text books about car audio I have, thanks. I do have a question about choosing the right OFC Copper wire. I wanted to know, in your opinion, how many strands of wire should a 4 gauge wire have and what is the highest amount that is on the market by brand if such exists? I am presuming that more strands equal more flow regardless if it is pure copper already. I ask because I saw two versions once and wasn't sure if it matter. Your example in this video pretty much applies to my amplifier at 2 ohms running 800 watts RMS. Thanks!

@brettbrassard7959 4 года назад

solid info mark, thanks for sharing.

@noti88 2 года назад

Such well laid out concepts, thank you!

@RHSTHUG 4 года назад

Thank u so much for all of your hard work!

@derekrichardson8221 4 года назад

As you know me!!! Glad to see you teaching peps ohms law. Makes you and all Pro installers jobs easier!! As I say make car audio installers better. That cause some pros need help too!!!☝❤🚘🔊

@bablobhai 4 года назад

awesome video Mark! learned something new yet again..

@jasonmcedward2595 Год назад

Upgrading to ofc now, thanks for tip. Much appreciated.

@TerryPullen 4 года назад

Great video. Mark's ability to clearly explain stuff is past 11 and all the way up to Bad Ass!

@lhbbq 4 года назад

Amazing information!!! Thank you!!!

@michakotarski7009 3 месяца назад

That video actualy helped me a lot. Thanks man!

@klay590 4 года назад

Would have loved to see you go over picking wire when your amperage exceeds 300. Knuconcepts offers 4/0, when would you want to switch over to that size. I know the amount of people pushing an excess of 300 amps is low but there are some and the information on picking wire size at this level simply isn't there.

@oghomelesskid 2 года назад

So me and some friends installed a sub in my car. 2 years later the power cable to the sub melts right by the battery, right behind the fuse....im hoping to just get a bigger gauge, from 8 to 4, with the same kinda fuse, and it will be okay. great video!

@GagandeepPandher 3 года назад

How does “GPT” or “Primary” Wire compare to the cca or ofc wire mentioned in this video? Can GPT/Primary wire be used for power and ground connections on a car amplifier?

@RadarLove84 3 года назад

I got all my OFC Wire from Sky High Car Audio and Ferrules (Install Bay) from Crutchfield.

@JoelBursztyn 4 года назад

great video Thanks!!!

@colbynye5995 4 года назад

Great info - thanks!

@CVObservatory 4 года назад

Very informative. Thanks.

@CarAudioFabrication 4 года назад

Thanks for tuning in!

@joeysawyer7572 4 года назад

Thanks great info mark

@adalbertoandrade9935 2 года назад

Hi, Mark. Thanks a lot for this video. It enlightened my mind in regards to my installation. I have a few questions though. What wattage should I consider in the calculation? The total wattage the amp manufacturer specifies or the total wattage it'll be driving according to my speakers? Example: I have an Infinity Reference 4555a, which according to the manufacturer is a class D amp, with an output of 760W RMS @ 2 Ohms. I'll be using Infinity Kappa 90CSX front, 60CSX rear (which are rated at 2.5 Ohms each pair and considering the length of the speaker cable, which I'm running from the back of the car to the rear or my stock unit plus the stock cabling back to the speakers, should be close to 4 Ohms back again) and a 4 Ohms Sub. The amp says it's 45W x 4 + 320W x 1 @ 4 Ohms. Is this the value I should consider? Also, I am not going to use the amp at full power. This is for a family car which I'd say 95% of the time will be used at around 30% of the volume max. Does this mean I can safely go lower on the power cable and fuse (I already have a 10AWG good quality cable from Rockford Fosgate from a previous install)? Oh, and my amp is located in the 3rd row of my SUV, around 6 feet from the battery, which is located near the right taillight, due to my car being a hybrid. Trying to save money and use the same amp, speakers and cables from the previous car if possible.

@rlg222 4 года назад

Dude! I really like your video's and how you talk to your viewers.

@kid_rajah 4 года назад

You should talk about what happens when you switch the fuses in your device(s) because I know someone has done this to add more power and messed up a amp or something.

@Zwakkie05 4 года назад

what i have learned at school is that p = u x i. p stands for watts, u stands for volts and i stands for power. It’s the same thing in this case 😊👍🏻

@ccvideotech 4 года назад

Props for the clarification of the look of the wire at the end. Many will have jumped to conclusion... are you just trying to drive heated comments from people that don't watch till the end.😉

@travisleehendon80 4 года назад

Awesome content and learned something new. Question. Do you build sub boxes?

@TriggaHappy97 4 года назад

Very helpful! I actually just purchased that audiocontrol unit based on your videos. One thing im confused about is on their website it says to use 3 gauge or thicker cabling on that amp which seems a little much, do you think its safe to stick with 4 gauge (OFC) for about 12 ft length?

@SheaRibbster 4 года назад

Tinned with a "material", aka....TIN! Great vids, appreciate all of the info!

@chrismeadows5948 4 года назад

Great tips

@remotexpolde 2 года назад

Already 1:25 into the vid and am astonished ( Home Loudspeaker designer here ) that you are covering this in such epic, fantastic detail... for car audio amplifiers..!?!?!! = Mind Blown. Lol :) Dude. u officially rock.

@gabriel2solis778 3 года назад

Thank You Sir

@longonponce 2 года назад

Question! Im new to car audio and this is my DYI for my wife 2008 MDX. Installing BOSS mono 1200W and BOSS 4 channel 1100w 1. Running 0g power wire to distribution 1in-2out, NOW can I down size from 0g to 4g or 8g after distribution? 2. Do I REALLY need distribution block for grounding two amps? OR can both amps have they OWN ground Thank you for your videos! I have a electrical background working for a manufacturing company working on automation robots, but this audio stuff is so different lolol PLEASE more educational videos!!

@GodofKings-Raj 3 года назад

Beautiful technically ellobrated.👍

@2008gagiudaniel 4 года назад

Hi! Just bought a Ford Fiesta 2019 and I would love to see a system build on this car!

@ajmarketer 4 года назад

With a small vehicle like a Fiesta if you put enough bass you can crank it up and push your car down the road should it run out of gas :)

@noahkb80 3 года назад

You can’t. It’s science. Subs won’t play in a go kart

@markphilpot4981 4 года назад

Just one thing Mark, you need sleeves on the ends so when they’re crimped, it will hold and not pull out or at least as easily. As you know, a stray strand is all that is necessary to smoke a fuse or an amp. Nobody wants that. I think you covered this on an earlier video! Just reminding!

@matthewJ142 3 года назад

OFC is tinned. Yes because it is coated all the way through as opposed to the copper turning exactly green or rust corrosion that has that dirty brown nasty copper color. Great video 👍

@WeWillFckUp2 4 года назад

Mark, what size speaker wire would you use for the Focal KX2 component set? I have a small 2011 Jetta and want to run new wire to the doors and tweets. Sending 125w of power per speaker

@scottstamm7022 2 года назад

What if you're also using a capacitor of sorts, does this have any effect? Maybe allow the use of a smaller gauge over distance?

@robertg2024 3 года назад

Is there any change in the calculations if your running dual runs of power and grounds to the amplifiers?

@vedeshharrypersad9485 4 года назад

One question if your car battery terminal has a fuse (140a) already on it how does that affect your choice of amp wire fuse size?

@fgcbaby9917 Год назад

I cut some power line cable from my neighbors yard and it works great 😃👍

@user-un1sh8xh5v 4 года назад

I love knu wire !

@CarAudioFabrication 4 года назад

@ccvideotech 4 года назад

Do you have an explanation somewhere of both using a second battery and also pros and cons of wiring the amp ground directly to the battery. For instance in a BMW where the main battery is already in the trunk.

@light03 Год назад

Perfect

@lagginlycan159 3 года назад

Ok mark let me run this by you.. I currently have 2 runs of 1/0 cca in my car along with a 350amp alternator. Now I'm only pulling about 250a on sub stage and something like 120a on mids and highs. I can currently get cca on a good deal from a friend that owns a shop so I was thinking about just adding 2 more runs of cca instead of spending double just to add ofc and wanted to get your thoughts on if I'd be fine with the 4 runs of 1/0 cca abt 15-17ft each. Also I'm adding a agm battery and a Isolator in the next few weeks Edit: the cca wire is metra brand

@k3v24 4 года назад

Do you think the length of the rca cables matter? I have 12 feet rca when I could really only like 1 feet.

@aemil94 2 года назад

Love your videos, thanks! In this example you use 800 watts in the equation. If you were wiring at 4 ohms would you use 500 watts or do you always use the largest rms output possible for the amp?

@AlexTurbo Год назад

Also wondering about this.. what did you find out?

@frifrafrey 3 года назад

Hi Mark. Can I change the wire gouge from amplifier to passive crossover AND crossover to component? My amp's manual says that I have to use 12awg from amp, but i have 16 from crossover. I need to now if change that wire or leave it as already is

@keithwingo514 4 года назад

So I purchased speakers, a small sub, amp, and amp kit from Crutchfield, installed myself (quite the pain), and it's working and sounding great, especially the sub. I might want to add a 2nd amp to power the other new speakers. Based on the amp kit specs and my own math using your formula, I should be able to add a 2nd 200 watt amp. Thing is, the amp kit is 8 gauge, and everywhere I look people recommend 4 gauge for 2x amps. Is the amp kit spec and this math trustworthy? Thanks.

@UnreadableMenu 4 года назад

Can you please make video about how to choose amp on 2 sub or 1 sub.

@pappo666 3 года назад

do you use this for the cables to the speakers as well?

@rogerwooten371 4 года назад

Thank

@akshath1450 4 года назад

I'm using zapco 5ch amplifier on my car so i'm using cca power and ground cables. my amp getting too hot and getting turned to protect mode while hearing loud.should i change cca power cable to ofc cable for this issue? And do ofc make any difference in sound quality"mark?

@RussLyman 4 года назад

Just the video I needed Mark. Setting up my new system. I need to grab a headhunt too. I'll be re watching a lot of your videos 👍

@lowhertzhighspl 4 года назад

10 dislikes!? Why in the world would anyone dislike this informative video!? My best guess would be because this awesome video provides info (facts) ultimately informing the ten 'Negative Nancies' they wired their system incorrectly. ;-) LIKE if you agree.. COMMENT if you think of another reason why someone would feel the need to dislike this video.. or DISLIKE if you're one of the following: Negative Nancy; Debbie Downer, Pessimistic Pam, Sour Sarah, Miserable Michelle, Tantrum Tonya, Livid Lisa, Dislike Denise, Thumbs Down Thaddea, etc =)

@MrDoomzy 2 года назад

As of now I have an 8 gauge wired from my battery going to an inline fuse going to my Rockford fostgate 1200w amp and going to my two 12’’ Rockford fostgate subs and I’ve never had any issues. Installed 4 JL door speakers with 2 tweeters. I know what to run the speakers to a separate amp.. so now I want to run a wire from my battery to a fuse, then to a distribution block than to the amps, so can you please help me on the wire size I’d need to run from my battery, and the wire size is run from my distribution block to my amps? Also what fuse/fuse size to get. Great video thank you.

@vallycrem3830 11 месяцев назад

hi man thankyou so much for videos..if i have 2 amplifer take me 70 A each that mean i have to put a battery of total 140A??thanks

@leviwright134 2 года назад

Wait so the amp I'm running is a Pioneer gm-d9701 its a 1 channel mono block that's 2400W max, I'm running sub's at 2 ohms and if I do this equation at 800w RMS (which is what mine is rated at 2 ohms) Then I get 76 but the amp itself has 3x 40 amp fuses which equals to 120 amps

@Moutieee 2 года назад

iv got the same amp mate

@mikeeyg1977 2 года назад

I’m looking to buy some cable for my system set up. The part I’m confused on is when going to the chart and determining the total wire length. I’ve always kept my ground wire as short as possible but my newest amp says for high powered amps it is best to run ground from amp to battery. In the video You said length is from batter to amp and amp to ground. So if I run a power cable from battery to amp and a ground from battery to amp, both wires are 18 ft long am I looking at a 36 ft run?

@5starMnR 4 года назад

I have a beginner question... so I have 4 speakers and I'm thinking about a 2x12 subbox. So can I use an 5 channel amp with the speakers @4ohms and the subs @2ohms

@jamesshands3198 Год назад

Do you have to go down a gauge in wire (4 gauge to 8 gauge) when wiring the second amp. or can you use 4 gauge for all connections?

@lowhertzhighspl 4 года назад

Hey PROS (Mark): QUESTION: My new number is 136 amps at 13'-16' which shows I need 2 gauge wire HOWEVER, since it's on the border of saying 4 gauge, do you think by me using 4 gauge OFC (Oxygen Free Copper) rather than 2 gauge CCA, that it would be okay to stick with my 4 gauge setup? (I don't think the following is relevant but just in case the details matter; I'm upgrading my 1,000 RMS system to become a 1,500 RMS system by adding another 500 RMS and second sub: Kicker L7 12" = 750 RMS ea. )(I have the "Big Three" upgrade if that matters) Thanks in advance for your serious input!

@eazye26boy 2 года назад

what crimper do you recommend for audio installations?

@jesusespin9941 2 года назад

Could i use household solid electric wire for an amp install?

@thewhizard 4 года назад

What about the gauge of the wires to the speakers with regard to wattage ?

@sir275handsome 2 года назад

Has anybody hooked up car audio with extension cord wire?

@luisquintero1945 4 года назад

Will my factory amp move Kicker components front and rear? Doing upgrade. Corolla with 6-3/4 components front and 6x9 rear. Already upgrade radio to Kenwood. Love your videos and I am a Patreon supporter

@user-ys3qz9pm7k 3 года назад

My Amp is a Kenwood monoblock 1000watts so do I use 1/0 awg power wire?

@alizepassion4u 11 месяцев назад

Hey thank you for all of your help I have a question. I have installed the skar evl 12 (1250 rms) sub and enclosure they sell on Amazon with a Taramps smart 3 bass amp. My question is will the amp go into protect with me running 4 gauge wire? Is 4 gauge ok since I am only setting gain for square root of 1250 which is 35.6 volts? Or do I need to have 0 gauge wire since the amp is a 3000 watt amp?

@PANTYEATR1 4 года назад

the way i choose my power wire (which i know now is incorrect) is by looking at the terminal size of the amplifier. then i buy the wire that fits that terminal or hole correctly. thanks for the vid💪

@CarAudioFabrication 4 года назад

This math is helpful to know because if you need to size a length for two amps you can determine what size you should use, and break it down for each amp as well based on the actual length of the wire.

@PANTYEATR1 4 года назад

@@CarAudioFabrication true, thanks Mark💪

@garretlast6923 4 года назад

PANTYEATR1 aside from legitimately finding the appropriate size like he explains, this is the next best way. Some amp manufactures do undersize their inputs though. I have had a 2000 watt rms (dyno confirmed) with 4 gauge inputs

@PANTYEATR1 4 года назад

@@garretlast6923 thanks for the input...another question, should any considerations be made if a 1 farah capacitor is in the system?

@RYDRmotorsports Год назад

Do you have a video about distribution blocks?

@roadeomagic 4 года назад

Hey Mark, great informational video!! One question please, I have a Rockford Fosgate T1000-1bdCP class BD power amp running my sub. I notice that it gets hot and I was told that those particular amps do that. It does have 4 gauge wire connected to it. Is this normal?

@CarAudioFabrication 4 года назад

Yes, these amps are known to run warm.

@Jrc2399 4 года назад

Is it bad to not use your subwoofers for several weeks? Will it cause any damage when using them again? Radio was fried and have to wait weeks to have new one installed worried about them being damaged due to cold weather

@stevenstratton6930 2 года назад

Would wire to thin make the amp heat up more then it should? 8 gauge on 1000w pioneer amp but the rms of it is 480

@romariomarcogoncalvesdias6446 Год назад

Can I use welding cable for my set up ?

@DJCuhhhstin956 4 года назад

So I can go with 1/0 awg cca where a 4 awg ofc would be sufficient for my amp, since they're somewhat equivalent in performance?

@RadarLove84 3 года назад

You can get 0/1 GA OFC.. $4/ft from Sky High Car Audio.

@onoaquino2949 4 года назад

I have a class D amp with 50w left channel output jack, 50w right channel output jack, and 100w subwoofer output jack. Does that mean I have a total of 200w rms? What if I only plan to use just the left and right (no subwoofer), should I use just 100w as its RMS value?

@Only1Science 3 года назад

Soooo, I have a 4-channel Amp that's 400 rms (100 rms x 4). Will there be an issue running 10 AWG OFC speaker wire (amp to speakers) or should I keep the 16 AWG in there?

@Bullfighter6262 3 года назад

What is the white tape you used to hold down the power wire?

@leonsullivan3490 4 года назад

Have 0ga ran to the trunk of my car because I only wanted to run it once, and it’s already ready for whatever power I want to throw at it later.

@GnosisMan50 4 года назад

I'm terrible with math....so glad they have the amperage marked on the fuse. My amp is 25A X 2 = 50 amps

@infinitygamer3829 4 года назад

I have a problem.. so when I put my remote wire and positive wire in the right place where they are supposed to go it doesn’t work but if I put my remote wire in the positive place and the positive in the remote wire place it works perfectly fine is this safe or no?

@Nytstlker 4 года назад

Hi, so this is not related to the video. I have been watching your videos for a while now but I am confused about the T-line sub woofer box. I may have just missed a video explaining it but if you could make one I would really appreciate it. I have tried to research it but no one explains it in a way that makes sense. Thanks

@billmea5593 2 месяца назад

So in your example, you’re using the two ohm rating for the RMS wattage, what if we are using all four ohm speakers then do we use that rating or do we always use the two ohm rating on an app for wire size?

@carlosuriarte2301 4 года назад

Hey mark I’m having a problem where my red radio wire isn’t send signal what can I do?

@RayRiv73 2 года назад

I have a Rockford Fosgate P300-10 sub and bought a 4 guage CCA with a 80amp fuse. Did go to big?

@casrelltrucking9694 4 года назад

Would you PLEASE demonstrate how to use a iPad as the stereo WITHOUT HEAD UNIT!!! I’ve looked everywhere and have been unsuccessful with finding a video! It would be so great if u could.. otherwise great content thanks for all the tips and trips

@raythewriter00 3 года назад

Okay question? you said the voltage was 13.8 where did you get that number from? Is it in the manual or is it from some other means.

@cezardacia1szf 3 года назад

Hi. How to explain to a friend of mine the importance of car audio wire when he claims that is pointless because the cable from the battery to the alternator is thinner than the wire you use for your amp. ?