Automotive Fuses - Does the brand really matter?
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- เผยแพร่เมื่อ 7 มิ.ย. 2024
- If you thought all automotive fuses were of the same quality, think again! This episode compares four fuse brands using a milli-ohm meter, the results are unbelievable!
TIMELINE:
0:00 Start
0:11 Introduction
1:20 Fuses to be compared
1:34 Fuse purchase
2:20 Harbor Freight Fuse Recall of 2009
2:38 Service Alert Bulletin for fuses of 2007
4:36 Auto Parts
4:40 O'Reilly Auto Parts
4:44 AutoZone Auto Parts
4:46 Walmart Auto Parts
4:49 Dollar Store
5:30 Littelfuse Fuses
6:36 Bussman Fuses
7:26 Old 2007 Harbor Freight Fuses
7:42 Fuse Data Sheets with milli-ohm resistance
9:26 SAE J2077 Miniature Blade Type Electrical Fuse Standard
12:12 5A micro-fuse resistance measurements
13:34 10A micro-fuse resistance measurements
14:12 15A micro-fuse resistance measurements
14:44 20A micro-fuse resistance measurements
15:21 25A micro-fuse resistance measurements
15:59 30A micro-fuse resistance measurements
16:25 Specifications and Comparison Data
19:18 Temperature Performance Comparison
20:00 eBay purchase fuse temperature performance check
26:34 Littelfuse fuse temperature performance check
30:48 Video review
This video helps cover content related to the 2017 National Automotive Technicians Education Foundation (NATEF) Master Automobile Service Technology (MAST) Standard task:
- 6.A.2 "Demonstrate knowledge of electrical/electronic series, parallel, and series-parallel circuits using principles of electricity (Ohm’s Law)."
- 6.A.3 "Demonstrate proper use of a digital multimeter (DMM) when measuring source voltage, voltage drop (including grounds), current flow and resistance."
ABOUT US
Weber State University (WSU) Davis Campus - Automotive Technology Department - Advanced Vehicles Lab. This episode covers how to use the incredible Hioki RM3548 Resistance Meter for Fuse comparisons and diagnostics This information applies to almost any other hybrid or electric vehicle on the road today.
We teach current vehicle technologies to our automotive students at Weber State University and online. For more information visit: www.weber.edu/automotive
This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see www.weber.edu/automotive/J_Kel...
Visit my other youtube channel / vibratesoftware to see the amazing NVH app for vibration diagnosis!
ADDITIONAL TRAINING FOR YOU
Join us for hybrid and electric vehicle training with two online courses and in a 5-day on-campus boot camp with Professor John D. Kelly. See www.weber.edu/evtraining
DONATE TO OUR DEPARTMENT
Please consider a donation to the Department of Automotive Technology at Weber State University here: advancement.weber.edu/Automotive
Okay, so I’m ashamed to admit I had never put a seconds thought into the quality of fuses, but now I’ll never replace one without thinking of it. Thanks! Great topic and explanation.
Awesome! Thank you!
I'm as equally ashamed to admit, I asked the auto store personnel if all auto fuses are "pretty standard". He said yes. LOL! I bought the Bussmann E-pack.
You Sir, are a Rock Star and Weber should be proud of you and your work. Please also thank them for allowing these informative videos to be taped at their facility and published!
I found this on a whim. I never thought there would be a difference in manufacturer of fuses. Shout out to you!
Nice were seeing it in action! Thank you for sharing professor! I'll be catching up on this soon
Thank you!
Those eBay fuses are great. They'll last forever:). You're wiring harness may not, but you'll never buy fuses again lol. Thanks for a very informative video.
LOL! Thank you!
Sounds like FPE home circuit breakers that never trip!
You are undoubtedly the biggest one man operation that I have ever come across in my long life. Its great to see a young man making the most out of life, working hard for what you want and doing it like an old pro.
Thank you!
Thanks john ,as a auto tech student 40 years ago in college,I'm glad to see that this type of teaching is not totally gone.Your students are very lucky to have you as a teacher.I just learned that my thought processe on buying MORE FOR LESS ---was--- IS wrong !!! In most cases it pays off to buy the best,a FUSE should be thought as a safety feature like good brakes and good tires.thanks again john.HEY IS that why there sometimes called safety fuses?
This was a very thoughtful demonstration with thorough explanation. Thank you for the knowledge 😁
Fantastic job sir!
Thank you!
South Main Auto Repair hey I watch your cool show!
Love your videos. I learn something every time. Thank you.
Thank you
Thanks for this. I am a retired auto mechanic- I suspect this information is often overlooked, and is so important! Thanks for covering this in such detail, so people can make an informed decision. Great Job!
Thanks for sharing John, the automotive service communities appreciate the intel!
Thank you!
I am astonished . I never thought a fuse can be so complicated . Thank you sir.
Thank you
this was a great thing to watch. thanks man! you are great!
Thank you!
Great to know and thank you for the time taken to make this video.
Thank you very much professor, I was about to purchase the cheap fuses & you have saved my life 😘
Thank you for your time proving the difference. I now know what to purchase. Thanks again.
Thank you
Your channel learns me so much!
Thanks so much for the explanation and test studies, awesome!
Who knew a lowly fuse could be so interesting!
Thank you! I agree
sorta like seat belts, fire suits, crash helmets, roll bars, air bags, sunscreen, safety glasses, welding gear, guard rails, surge suppressors, cholesterol pills (I'm getting old).....no one wants to pay for protection...until they're not protected! Mentally, we're much happier fixing something that's broken than preventing it from breaking in the first place.
These videos are really great. Thanks for doing this. By the way, that is Litt-E-Lfuse, it is usually misspelled as Litt-L-E-fuse most places.
What a great video. You opend my eyes to fuses
And probely helping saving lives
Thank you very much!
Thanks John for the education. As a Master Electrician doing mostly Industrial troubleshooting I never knew the importance of quality fuses, I thought a fuse was a fuse. The implications of using inferior fuses should be criminal.
Thank you for the heads up ...I was never taught this at school that's why I come to you !
Think when you take your vehicle to a shop, they might put these bad fuses in it to increase their profit.
@@gormenfreeman499 Possibly...but willing to bet a lot of the shops just don't know there is a difference.
@@kahvac I am auto technician apprentice, but it is scary to think about the practices of some people in the industry. Being responsible for burning the wiring of a vehicle or starting a fire is not worth it to save dollar or two on a fuse.
Love your videos and the importance of good quality products
Profoundly beneficial. Subscribed and shared on Twitter. Thank you, Professor.💐
Excellent!! As always!!
Thank you!
Nice video, very interesting. You get what you pay for has never been as true!! Thanks John.
Thank you very much!
Amazing, absolutely amazing! With true gratitude . . .
Very thorough and complete ,Sounds very technical but the bottom line was don't buy JUNK.I just had a problem yesterday with a fuse and was riding the fence on which one to buy, I made my choice now Thank You.
Thanks. I passed the info onto others. This is the best video on bad fuses.
Fantastic video! Thanks for sharing!
Thank you!
Great video Professor!! One of the best videos on fuses and the mA tester is just scratching the surface on it's uses. The damage from a fuse not blowing will not be worth the few dollars you saved. I've used Bussman my entire career and won't be changing anytime soon!
Thank you very much! I totally agree
Thank you very much Prof. Kelly, this is very crucial for all cars owner. I will never buy fuses or electric safety devices over unknown brands. Just check generic fuse on Total, Shell, Agip, and Aral gas station in Germany. All those fuses are from Bussman
Excellent! I figured the low quality fuses were junk just by what I've seen come out of China for low quality parts, but I just assumed they were junk due to tolerance variance, not the fact that they are SO FAR OFF that it's overspec by 5x!! I need to buy a collection of fuses and this solidified my decision on name brands!
Thank you! It is incredible how bad they are
Fantastic video! I've been having electrical problems on my car for years and multiple mechanics can't tell me why the errors are intermitten. After watching this, I think I'm going to check through all my fuses to see if somewhere along the line a crap one was put in. Especially since the electronics are so sensitive in the cars these days.
I just bought a bunch of those fuses from eBay, guess what they’re going to go in the garbage thank you for the information, it’s like they always say if something sounds too good to be true, it probably is ,Thank you for all your great videos professor
Really helpful. Several years ago I had a cheap chinese fuse weld itself into the contacts , fried a section of harness. Since then I'll gladly pay the difference for Buss or Littlefuse.
Good to know those Bussman and Little fuses are the right ones to use!
Yes! Thanks for watching
I ordered Bussman Caddy1 kit for the shop from Zoro. Should be here today, to replace the kits I have bought of anonymous quality. They matched lowest online price of 126.00 for a 275 piece set of 4 boxes in a caddy.
BTW, your channel is very illuminating. I grabbed a tester and one of these old kits, they all measured about 1.2.... all "colors" I cant call em Amp anymore.
Thank god the auto makers use thinner wires.... so they melt if the fuse fails, thus the wiring IS the fuse !
I specifically searched for this info and your video came up. Holy crap, those are so far out of spec, it's criminally negligent. Thanks for making this. I had no idea that shunts came in all those pretty colors!
What great information, who knew...Thank you very much
Thank you!
Thank you for making this video.
Thank you
Nice Video! Oddly I would have thought this to be the other way round.
Another great job. You are a treasure sir.
Great test!
exactly what i was looking for!!!
great demo mr-John
Very helpful, thank you
Thank you Sir for this great information.
Great information, thank you
Thank you!
Very interesting indeed. Thank you Sir. 👍
Bussmann and Littlefuse have automotive blade and cartridge fuse product lines that overlap in most instances, with some fuse designs unique to the manufacturers. The most popular domestic fuse types are blade types: Maxi, ATC/ATO, Mini, Low profile Mini, Micro2, Micro3 and cartridge types: JCASE, Low profile JCASE, MCASE and Slotted MCASE. Beyond the types mentioned there are also large amperage bolted fuse types.
In their entirety, the motivation for the different types is space (size), closed or open element (environmental and opening thermals), opening time-current (basically; fast or slow blow), and isolation (shrouded and separated connection points). Cost is also a factor, but is many times not as important as space (which also translates into cost), for example with cartridge fuses (nominally small form factor high current slow blow with better isolation rating).
great video! Thank you.
Thank you
Thank you so much Professor.
I’m a retired project manager for the F16 (F110) GE engine). I am aware of the difference in fuses. However, the normal auto owner does not understand the differences and will go for the cheaper fuse not understanding they could be damaging their cars electrical system. Thank you for pointing this out.
Fantastic so good never new this
Thank you
Thank you, Professor, for taking the time to do this video. I am a licensed technician having over 40 years experience within automotive dealerships. We only used OEM fuses from our parts departments and they came from the manufacturer. So I never questioned the quality.
With online platforms selling chinese knock-offs so far out of spec, sensitive and expensive car components are at risk. Your video is an eye opener and actually required info for van builders putting in their very own electrics with online purchased components.
Question: I have a 10MOhm sensitive meter with a listed inaccuracy of 8%. Can I qualify my bin of fuses using the specs of Littelfuse or Bussman?
Wow, I picked the wrong place to save money. Thank you for doing this!
I never considered the resistance value of the fuse element when considering the quality of the fuse. I have seen tsb's from gm regarding the cheap fuses from import tool stores. It makes sense that with higher resistance you have lower current flow and with lower resistance you have higher current flow. I guess I'll have to use 2amp harbor freight fuses for my 10 Amp circuits 😂. I am quite a curious person and I think I'm going to try blowing fuses using my current clamp and pico scope to see the amount of current required to blow these cheap fuses. Your videos are an amazing source of information and knowledge. As a student of all things automotive your videos are pure gold. Thanks for sharing!
Excellent Job.......
Thank you!
very informative thank you
Thank you
Thanks for doing this! I was suspicious of the cheap fuses on Amazon and this confirmed my suspicion. It would have been interesting to see the same comparison for Bosch fuses.
This is an excellent vidio so detailed as to variing loads, However the fuses most important job is to open a short circuit load !
You are correct. Thanks for watching
Thanks for the great information. My 87 VW thanks you.
I've been doing car electronics on my projects for years and never gave a second thought about the quality of these fuses until I was on Amazon and wondered why 240 fuses could be bought for 10 bucks. I thought I should investigate a little further into the quality of these fuses and after watching this video I too am ashamed of the fact that I never really thought about it. Thank you for this video I will gladly spend a lot more money on better quality fuses.
Hello professor, thank you for the videos
Thank you!
This was very helpful, thank you. I was wondering if the fuses they sell at my local AutoZone are the same ones you'd get on Amazon for cheap. I currently have a box of the amazon fuses I've been using. Not sure the grand but they've always felt a little cheap... the metal prongs feel too thin. I'm going to replace them with a better brand ASAP.
Professor Kelly, I am L1 certified Master Technician. I been thinking of obtaining L3 Hybrid specialists certification. Can you suggest what study guide is the best for ASE test?
Thank you, saved me from buying crappy fuses !
I think it was south main auto channel when he had a meter on a circuit to test it, a meter was showing 20 amp with a circuit fused with 10 amp fuse, I think people don't trust the resistance value but what's make amp is voltage and resistance and resistance makes heat, great test don't trust cheap items but did not think of this, great video thanks for uploading it for education and it makes things safer and in the end could save lives.
Thank you very much!
Appreciate the video
On your 8 speed ZF video. You didnt say what the normal operating temp was .. and how hot is too hot?
Nice explanations.
No one think on that and people always looking for the cheapest fuses.
Best way to get quality fuses and cheap are the salvage yards.
Thank you!
Thank you ! 🙏
Also, if you find time to recreate this for the eBay resetting fuses (they're for testing different components on a circuit to figure which one is shot
Hello what kind resistance betwen prius NHW20 MG2 and ZVW30 MG2 ?
Eric O. , funny seeing you here , I thought you only hung out with Ivan and keith HAHA , Love your channel BTW . and this one Too !!!!
Thank you!
You're welcome!
In my experience I realized that some fuses the element (and contacts) are made in aluminum and others in copper and some in brass.
The aluminum made ones are the worst and are completely out of specification.
Thank you Professor, outstanding video as usual.
Are you going to check at what current the fuses pop? I'm curious😁
Not anytime soon. It is a current verses time test. I don’t have the equipment to do that. Anyone can short circuit one.
good lesson
Thank you
Thanks for posting this. I for one probably would have bought one of those cheap bargain packs from ebay or amazon thinking a fuse is a fuse. I will not be doing that now.
A couple of things that might be interesting to check with your new toy. Check contact resistances of oem and non-oem replacement switches. Also checking resistance of connections at battery terminals and alternators. Especially if you could compare clean terminals with corroded terminals.
Thank you! Great ideas
Doing a visual inspection a
of generic Chinese fuses, the internal metal strip that is supposed to melt they all look the same thickness regardless of the amperage rating. I expect the 2 amps metal strip should be way thinner than the 30 amp one. But just by looking at them, they both look the same thickness. Is that a problem? Thanks
I am a retired engineer from Littelfuse. Tin is NOT used for plating the leads. If you find tin, it will be minimal.
Hello sir I faced new problem in Mercedes kompressor the problem is when I press the break pedel it's not come back into his place so sir please reply and tell me any solution
the cheapest place to get quality oem fuses is your local salvage yard. and the rule of thumb is if it fits in your pocket they are free, so even cheaper than ebay!
That is a great idea!
been doing it for years
Fantastic idea
I pull fuses and relays everytime I go!
Yeah but who knows what the previous owner or repair shop stuffed in there. You can't tell by looking at them, and you have now idea of the car's history.
😮thanks man.
very good, thanks ...
Thank you!
Thank u for sharing ,may the lord bless u
Thank you!
fuses i only use are: Littelfuse, MTA, Cooper Bussmann.
Thank you for this video. I got sus after seeing 105 fuses for $16 CAD on Amazon compared to LittleFuse @ $18 for 14 fuses at Canadian Tire. Such a huge difference didn’t make any sense to me, i started searching and landed on this video and as suspected Amazon is selling garbage. Bought LittleFuse kit and now hardwiring my dashcams.
Thank you.
A couple of important notes: A fuse doesn't melt a wire - it fails to protect it when a fault (overload) occurs.
And while resistance is usable to verify a known fuse it can't be used to judge an unknown since the material used determines both the resistance/A and the melting point.
That said, fuses are important and definitely needs to be manufactured in a controlled way to specification.
Would have been interesting to see a simple load/overload test for the smaller fuses to see if those results matched the theory (most likely). A 5 A fuse should handle a single 55 W bulb driven by a car battery (about 4.5 A) but trigger for two in parallel.
This also highlights an issue with this style of fuses, they are all the same so nothing stops someone from replacing a blown fuse with a larger one!
Great points, thank you
Many styles of fuse come in multiple ratings. Education is the best way of preventing stupidity.
Thank you so much for you're wealth of knowledge I'm so glad I've seen this one about fuses I was about to buy from Amazon a box of different fuses of all the amps I've enjoyed your video's I've subscribed to all your video's so thank you I've learnt a lot watching your video's you're so easy to listen too I'll get my fuses from my local store Car accessories not amazon or Ebay
I don't know if it's possible to get the fuses you have LittleFuse or Bussman type as I'm in London uk I'll check anyway if not possible I'll go to my local garage so thanks again for a fantastic video I've enjoyed you're videos Greetings from London UK ....
Hello 👋 i am very late to this video. I have a question do Bosch make good car fuses, based on what you have said in this video they appear to be quality an assorted case of bosch fuses around £50 but you can buy smaller bosch packs who with 10 individual fuses on amazon for £3. Thanks for the video you made me think twice about the type of fuse I bought.
Wanted to know a legit brand name for fuses, thank you!
What was the hand temperature influence over the china fuse resistance. You kept it in hand for way too long for an accurate measurement, compared with how you picked the other ones. 13:00.
Had no idea about this, and bought some cheap fuses from Aliexpress.
In this case I shall use the cheap ones only for unimportant things, and good quality ones - for everything else.
Thank you.
Harbor Freight never fails to incite a chuckle
I would have like to see at what current the different brand of fuses actually blow at.