DIFFERENT TYPES OF DC FUSES (for a DIY Camper Electrical system)

Are class t fuses the same size as anl fuses? Just curious if I can still use the anl fuse holder?

do i need a t class fuse on my powerqueen lifepo4 12v 200ah with 200A bms and 2000w inverter?

New subsciber here. I have a question. I am running four 12 volt, 100 amp hour lifpo batteries hooked up in parallel going to a 40 amp mppt controller. I want to use terminal fuses on each battery. Should 100amp fuses be sufficient, or is it too big or too small on each positive terminal? I am also running all four batteries to heavy duty Pike Industry Busbars. I just want to have the ultimate in safety redundancy. Any opinions? Thanks.

Thanks for thiis discussion 🙏, very much appreciated however I'm stil in doubt about which T class fuse I should be using inside my custom 48V Lithium battery. I have designed a fuse holder which I have fitted with a Bussmann bs88 180A fuse knowing that this type can be used on borh DC and AC however, the Blue Sea Systems seems to be rated for lower voltage (125 vs 240fro the Bussmann) and I am concirned that they might behave differently. The bussmann is more readily available at a much lower cost but I wouldn't wont to compromise the circuit so I have been trying to obtain a comparison but unfortunately unsuccessfully so far. Perhaps you could discuss this in a future video ?

Hi Nate, if you had used(2), 24 volt batteries instead of 12 volt batteries, would your wire Guage and all fuses be the same size,thank you.

You totally missed out on the Euro equivalent of a class T - the NF fuse (aka knife blade) fuse with very long tried and tested pedigree (since WW2 from its German origin Siemens). These have 100,000A AIC. OBTW they can also be disconnected on a live load (with a fuse puller handle and wearing protective gear and having had suitable safety instruction). Downside is the difficulty in obtaining a fuse holder (makers keep this essential tightly controlled, to make you buy a system from them - even though its covered by the IEC 60269-2 std). However the far east have been using this design for years and you can buy a basic open ceramic carrier w fuse for $10 thus breaking the cartel and hopefully your fault current
Bottom line is that a 12Vdc system is the safest (YOU CANT STRIKE A WELDING ARC AT THAT LOW VOLTAGE- but you can at 24Vdc)
Very good summary BTW and you are spot on at the deliberately engineered complexity of fuse systems.

Super helpful breakdown. Thank you :)

Very informative video because I had no idea about the levels of fuses available and the purpose of each

Hey nate, I got a grow watt 24v system with 4 24v battle born batteries, I bought 2 more batteries and was wanting to know what I gotta do to drop them into my battery bank. I can't find any info on what needs to be done to add these batteries

Very educational - thank you :)

I finally get how to choose between all the fuse options. Thanks!

Do you know of any terminal fuse blocks that fit M8 battery studs? All the ones I see are M10.

Really appreciate all your videos. It's been great help. Thank you 👍

Great video as are all of your videos.
Question: Can I use a 300A terminal fuse on my 200AH lithium battery or is that too much? Thank uou

Do ANL fuses work in the lynx shunt fof main system fusing?

Class T are routinely available up to 800 Amps (and more than one manufacturer goes up to 1,200A). You are right though they can be out of stock from time to time.

I have 4 24v 200Ah eg4s in cabinet w busbars to which each battery is connected. Can I put one MRBF fuse on the positive terminal of each battery for protection or just one MRBF fuse on the positive battery cable from that busbar connected to the inverter, please? Thank you.

The AIC on all these fuses is dependent upon the voltage they are running at!? Thanks for the video!

I'm in the process of installing my electrical system based off the Explorist 12V / 3000W diagram (with 3 x 206A batteries). I recently purchased the recommended 400A ANL fuse. Do I need to scrap that fuse and holder and switch to the T fuse setup? As of today, there appears to be several options for T class fuses available on Amazon. I don't understand from the video how much risk I am taking using the ANL instead of a class T. Thank you.

Will an anl fuse fit in the lynx power in? The spot you would normally put a mega fuse?

Great video - can you break down breakers! DC breakers are so confusing... thanks

Why'd you switch to ANL fuses?

I learned much thanks

Hi Nate, is my understanding correct that a fuse rating, say 70v 250Amp means that the max voltage I can use it for is 70 V and therefore I can use it as a 250 Amp fuse in my 12 V system?

Great vid, info, rundown & explanation of these fuse types Nate.

I have a Maxxair Mini Dome Fan with a Mini Fuse With a Screw-In Cap, it's gone missing and even. With the company, I can't find a replacement.

What about features like slow blow / time delay? Are there variants to avoid or choose?

I'm confused what is the purpose of having an AIC? The AIC is determined by the material of the fuse element?

When would it be appropriate to use a DC breaker in place of a fuse?

How would you go about calculating the max amp release for your LiFePo4 battery if were to short? Does the built in BMS protect for this also? I only have one 12v 280ah LiFePo4 Battery in my system. So would the mega fuse be adequate in this micro system?

Hmmm....I'm not having any issue getting Class T fuses. Maybe I've just been lucky. Nice explanation on the fuses. Most people do not know what to use and why.

A critical and complex subject, this is why I recommend this channel to everyone.

Thanks! Your diagram was so helpful last fall when we did our battery/solar upgrade. Now we’re enjoying the fruits of our labor. We will be changing the battery bank 400amp ANL to a T-fuse when more become available. One type of fuse that was not mentioned, and this may date me, was glass type t/tl had in my first home. Lol, old school. Thank for all the time and dedication both you and Steph put into your builds and videos. Thanks again

It would be neat to have a little pdf file as a cheat sheet with all these fuses.

Good Morning. Thank you Great info. Jack

Nate, An excellent explanation why you are currently listing the ANL fuses instead of Class T fuses in your diagrams. I noticed a limited supply of Class T fuses two years ago when I was building my system using your 400A/3000w diagram. I wanted a spare fuse so I have to buy a fuse holder just to get the 400A Class T fuse that came with it. Are you putting a footnote on the diagram to use a Class T fuse if available?

Nate, you took the conFUSING out of fuses. Thank you

Nate, another great video and confirmed why I couldn't get T fuses last year. 👍

Another great video, I learn a lot from them. Thx

Most AGC-type fuses are rated for 32 volts for DC current AND 250 volts for AC current (50/60Hz). It is easier for a fuse to break an arc of AC current, once the fuse element melts, as the current passes through 0 amperes 100 to 120 times a second. Thank you for producing this video, as fuse AIC ratings are rarely mentioned, and ignoring them can greatly increase the chance of a fire if there is a low impedance short.

Outstanding video, as usual. Incredible restraint to accurately call them A N L fuses. I couldn't do it 😂

Great video! Wondering why you didn't choose mrbf fuse for the main battery fuse instead of anl?

Ecellent video. Can you do a video about ceramic DC fuses and 12V DC systems please? In my country we get 10x38 ceramic DC fuses.

I’ve decided on a subi Crosstrek build and I’m implementing a lot of stuff from your current van build when I comes to construction like using the t-channel square tubing to build out the frame and slotting in the plywood. Looking into the battery and where to put it I saw that you guys use to have a Crosstrek, do you think the spare tire compartment would be a good idea? I’m a bit worried if a fire or short since I’m from Arizona

Fantastic!

Nice. You do a good job.

Dang I was hoping you'd cover CNN fuses

Love it