What Size Fuse and Wire? ANSWERED!  

Thank You for Watching my Proper Fuse & Wiring Sizing video! Subscribe To This RU-vid Channel: ​​ru-vid.com​​ See My Wiring Playlist: ru-vid.com/group/PLsF7T1tRFy2hmiiUUfMZNyV-BUA_yrPIh

You could make a LOT of money by creating a course on wiring. You are unbelievably good at explaining things clearly, and making it super interesting to learn. This is a super power sir. If you are unaware that you have that super power. You should use it. :)

Finally, an automotive wiring video where my brain didn't short out. Huge thanks !!

Thank you so much for sharing this info with us, the working men. I really need to learn all this in order to work on my 30 years old car. It was fun to watch you were blowing all those fuses, and you're an awesome teacher. Thanks again.

Awesome explanation. Thanks dude!

You are a genius man, may GOD BLESS YOU!

What a GREAT, easy to understand, educational video! I learned more from watching this than any other video I've seen in months. Thank you SO much!!!

Couldn't be more clear and straight forward. Thank you 👍💪

Thank you for your headlight example!! I’m working on a 1968 Galaxie and I have two 40watt par46 sealed beams that I installed to flash in the rear window like an old police car and you answered exactly what I needed to know!

Couldn't be more clear and straight forward thank you

You are quite knowledgeable in the area of automotive wiring. Thanks for ALL of your videos!

SO GLAD I FOUND YOUR PAGE!!!! AWESOME VIDEOS!!! SUPER HELPFUL, VERY PRECISE, NO BS VIDEO!!!! KEEP EM COMING!!!!

Good info , love it. I have wired fog lights before but never calculated amps. Used relay and 14 gauge wires. no problems so far. I will do the math next time. Thanks.

This video just broke down the subject perfectly thank you

This video is underrated for sure!! Well done! 👍🏻

Absolutely, straight to the point and clear to understand

Wow,excellent tutorial

Awesome job on your How-To videos! Best I've seen!

Great Job and EXCELLENT presentation! I like the linked chart and calculator! Very useful tools! I will be using both.

hey man i've been on your channel whole night saying to my self how didn't i come up with this channel when i started to try learning basics of wiring. your amazing man thanks alot !

Legit, you just made this so clear to me. Ive always been good at and loved math but my electronics teacher made class so boring and uninteresting. Really considering switching trades and getting into electrical to save my body long term hahah

Thanks for this video. Finally someone who knows what they are talking about ! I have a newer 1500-watt inverter, which I had been using fine for months. I accidentally shorted it out. Opened it. Found 4 x 30a fuses in there. I saw the first in line was blown. So... easy. I replaced it. But I didn't have a 30a large blade, so I replaced with a 40a large blade. No problem, it is a little bigger so won't blow as fast as a 30, but still small enough that it will blow if it needs to. BUT... it blew! right away. With only about 650 watts device on it. Put in another 40a, which also blew. Put in another 40 and using the inverter now for only charging small, low amp devices while I figure this out, which seems to be working fine, but waste of a huge inverter like this. Is something else wrong inside there that the short caused and that is why it keeps blowing? Or is the 40a blowing where a new 30a would not?? It seems the 40a would blow LAST instead of first, inline with all the other 30s... Mmmmm

Outstanding More of this mr rm, more

Good video. I always size the wire to handle the load, then size the fuse to protect the wire.

Great video. Very informative.

BOOM! Pun intended, awesome, well explained video. Cheers mate.

You are living legend, thank you

You are a good teacher

Wow this is Great Information I enjoyed it. This is good stuff to know.

Such a good, clear video. Good explanation

Awesome tutorials 🙌🏾

awesome video for those of us not so electricity tuned thanks

Hi Jeremy you are so great and patience

i really appreciate this video i actually listened and learned a lot, we’re doing this in my physics class and i never pay attention in that class but for some reason i payed attention because you have a a body aswell 😂

thanks once more very informative Two thumbs up

Thanks brother your explanation 🎉🎉🎉

GREAT JOB SIR - THANK YOU FOR THE CHART LINK

Thanks you for clearly explanation

thanks dude , be bless

Please do video on six volt pos ground to 12 volt neg ground conversion!! Thanks ! Your videos are gr8

Thanks again for the information

Great video explanation 👏🏼

Nice video.Thank you.

Very good info. Thank you.

Awesome Video. Thanks for sharing your knowledge! it really helped me

Hi, very niece seeing believing explanation. You suggested Fuse Variety Pack. Can you suggest me relay variety pack also? Thank you!!

awsome videos. how would you test the fuse to know it is blowing at the correct amp? or just dont buy cheap fuses?

Blowin fuses like the Fourth of July

Much appreciated :)

Good info, I recently ran across your videos, my question is how do you find out what a device, like a fan motor, draws as far as amps? I'm trying to use a pair of cooling fans from a donor car. I have tested them separately. But when they are turned on together it will draw more amps. Suggestions?

Great Job. Subscribed.

Thanks that's amazing great video channel nice ideas I like it

Helpful ❤❤❤

So how do you choose the “style” fuse you use? (Regular, mini, etc)

Hi. Can u use a mini fuse in a car that normally uses a mini low profile fuse of the same amp? It fits and works, but is it safe?

I have a fusible link for my alternator/fuse block that keeps blowing. The alternator is a 60amp. Not sure what size fusible link is on it now. Wanted to switch to maxi fuse. Will a 60 amp do the job or should I go higher ?

Awsome just awsome 👌

Great video

Do you have a recommendation for wire types to purchase for car wiring?

I am from Egypt and i keep watching your vidoes Keep on Man ,, you are doing the best vidoes in world Can you make video for wiring Gps tracker with eninge Cutoff relay ,, causr thieves so high here If you read my comment wiill be happy of small reply

Hi, I keep blowing 30A inline fuses from battery to relay to satart the car all new 8 gauge wiring, I dont know what the starter amperage is for starting, if I go to 40 amp or greater which nmeans I have to increase the wire gauge may up to 4 gauge, what do you think.

OK, Bink-A-Tee Bam....New technical term? I will be using it.

Thank you for your video

You da man!

If you have an old wiring Harness,How do you tell what the different Gauges of wires are if you want to use some of the wires ?

Thanks

If I were to have a wire leading to multiple other lights. Say one wire to a bus bar and then separate wires to each light do I only need to account for the amps per light on each individual strand, and then the combined amps from the bus bar to the battery?

thank you very much. My radar detector did not work in sudden, i thought RJ11 wire cable was too old (10 years setup, using on my 3rd car now). so I bought the entire hardwire kit from Amazon. My old hardwire setup: 7.5AMP bladefuses with fuse adapter + Glass Fuse 1 Amp 250v. Before I change to new hardwire kit, I realized that old table burned my Glass Fuse 1 Amp 250v. So I replaced the glass fuse 1amp (new from new hardwire kit - there are extra in my new hardwire kit), radar detector work again, it only work again like few mins, but new Glass Fuse 1 Amp 250v burned out again. I don't know why?????????? Now I changed the whole setup to new hardwire kit. its 3 AMP bladefuses with Fuse adapter + 1 Glass Fuse 1 Amp 250v (same fuse but new) . It looks fine, but I'm not sure why my old hardwire kit burned out two * Glass fuse 1AMP (first glass fuse used for 10 years), and second glass fuse (new - only use for 2 mins) Do you know what is the problem? Do you have any idea? please thank you! BTW thank you for your information, I have learned about gauge + watt + AMP thing, that is really helpful and great example idea. I wish u 100k sub soon. ** The power is coming from accessory empty spot in car fuse box** **Fuse adapter i only put 1 bladefuse on top one** Since that is empty fuse spot, so i did not put 2 bladefuse on fuse adapter. my new wire kit: 13FT RJ11 Style Radar Detector Hardwire Kit,Quick Connection Plug and Play Cord Cable Set (i don't want to share amazon link and affect your channel)

I'm good with residential and automotive wiring, but like how do you figure out what relay to use when wiring a car when ever I had to fix something n if it was the relay I would just replace it with the same but for wiring a car from scratch how would I figure out what relay to use 🤔

But you got to remember it draws more when it first turns on . So use a 10Amp fuse. 2x55 watt bulbs 15 Amp fuse 2x100 watt H3 bulbs 20 to 25 Amp fuse. But that was a grate video.

I've read the fuse margin to be 1.25x then pick the next size up. So, 5.92A X 1.25 = 7.4A, so 7.5A is fine. It might be you skip to the slightly bigger fuse than just enough but it should cope with spikes etc a bit better than just the next one up. It's better to err up just a fraction on the wiring anyway, especially on a longer run or if marginal and the fuse is there to protect the wiring, I think.

I have a 2013 ford fiesta se, I’m installing an aftermarket radio in it. Unfortunately the car doesn’t have an accessory wire so I can’t seem to get the new radio to turn on when I turn the car on. I need to tap into an accessory fuse. My question is what size fuse should I use and should the fuse tap have an extra fuse unit. Alas what site wire should I use. Thanks

So according to your sample chart on wire size for fuses I’m see 6 ft not 10 am I missing something?

Im doing a car charger directly to the battery ot draws 17w so 1.23 amp ive got 2 amp fuse should be ok

Sir,how about for mitsubishi lancer pizza pie what fuse need to use

Okay so if I have a starter that I want to put a Mega Fuse on. What size would I need if the vehicle requires 585CCA (cold cranking amps)? 600A Mega Fuse? What about using a MRBF terminal fuse right on the starter. So if it blows, it won't arc anything but the fuse.

You just great

You're making a habit of explaining things waaaaaayyyy too clearly... 😁

cool!

Awesome!

How to read wire chart would be good thks

I would have used a lower voltage rating which would mean higher amps for the sizing.

If you use 12 volts instead of 13.5, you get 6.666666 amps. You should probably use that measurement because it will give you higher amperage. Therefore, it may require, in some instances, larger wire/fuses

What voltage is your power supply set to to burn thru the wire ? Basically if i use nice and thick wire together with smaller rated fuse that’s the safest for a tap ?

Is the 80 watts for the seal beams when they are hot as the heat changes the resistance of a bulb which will change the amps eg. A light cold might be .5 ohms and light hot might be 3 ohms which will change the amps

I installed a wolo horn on my 2022 Corolla Cross. I just hooked in to the previous wires. It worked at first, but now it blows a 10amp fuse. Will I have to go the relay route? And if I go to the fuse box for power, will it turn off with the car?

6:00 Attention is required here. Lets say OEM is a H4 bulp 55/60W and Fuse 5W but the bulp is changed to 100/90W but fuse and wires are still OEM !!!

good

So how do i determine what size wire goes to the relay that just trips the switch to connect the power to whatever???

what about connecting two different gauge wires like a 12 gauge to a 16 gauge? I have auxiliary light with a connector that's 16 gauge and I have a wire harness that is 12 gauge The light produce 1.14amp

That eraser made me click subscribe 🤣

So how do you figure out how much amps is going to be pulled when the item has no description specs.

What wire is best to use for a 12v fuel pump?

so let’s see i have a pair of led lights that don’t tell me how many amps they are it just says “240w/pair” i’m assuming if i do the math 240/13.5=17.78 so that means i need a 20 amp fuse and 20 amp relay to run them safely? i checked the actual amp draw by hooking up the lights to a spare battery and putting my volt meter on DCA10 and putting my meter inline to complete the circuit and it was drawing 3.77 amps. confused and don’t wanna burn my car down lol

In your headlight scenario, the amperage load has determined that you require a 7.5 amp fuse and the minimum wire size required is 16 gauge. If I happen to have a large spool of 14 gauge or 12 gauge wire available, can I use those larger gauge wires in this scenario? If the larger wires are used, does the amperage of the fuse required change? I happen to have 7,000 ft. of 12 gauge copper stranded wire. lol.

So when you calculate the amperage do you double the amps size since there’s two lights?

I installed led lighst on my trucks bed , with a 30 amp fuse which blows up when turning the lights OFF, i searched the leds and it says they are 1.5 w per pod and it’s a total of 8 pods which makes it 12watts /12 v since they will be running when truck is off , and it’s 1 amp, could that be the reason it blows up the fuse for Overload , it did i learned something wrong!?

hello, as I learned in HVAC school thiry years ago, the purpose of a fuse is to protect the wiring.

Does it matter if the fuse is installed on the positive or negative lead?

can i use a 10 gauge wire in a 15 amp circuit?