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Best Fuses & Fuse Holders for a DIY Camper Electrical Install

Fuses are a vital piece of safety equipment in any electrical system. Fuses protect the wire from an overcurrent event such as an electrical short or from trying to push too much power through too small of a wire. This blog post will teach you what type of fuse you need for your DIY camper electrical install.

Cheap vs Expensive Fuses

In the past, I’ve recommended very inexpensive fuses. They worked for a while and many people had good luck with them. Recently (since February 2020), both myself and the tech support team at Battle Born Batteries who I work closely with have seen an increasing number of quality control issues on these non-name-brand fuses that are so common on Amazon. These problems revolve largely around the fuse getting too hot under normal use. This would cause the fuse holder to melt, loosen, and cause the system to stop working.

So… if you wish to save some money and test your luck with these inexpensive fuses and fuse holders; that is your prerogative; but I can no longer recommend “no-name” fuses and fuse holders on So, the following list will include only fuses and holders from Blue Sea, Littelfuse, Bussman, Eaton, Spartan Power or similar that have, at least some kind of testing agency certification or code compliancy recognition (UL, ABYC, ROhS, etc).

How Big of a Fuse do I Need for [My Device]

This blog post is more about the various TYPES of fuses and not necessarily how to choose the sizes. If you want a more in-depth blog post & video that will teach you how to size a fuse, you can click here for the specific blog post on that topic:

Best Fuses & Fuse Holders for a DIY Camper Electrical Install

This list will show you the various types of fuses you will encounter during your DIY camper electrical install and teach you which ones are right for what purposes.

Charlie D

Friday 15th of April 2022

Running a 48V system. Assuming a standard ANL fuse won't do for the battery fusing on the bus bar. Do I need a 58v megafuse? Same for inverter and CC? Thanks!

Joy Dorant

Thursday 14th of April 2022

Hi Nate! I've added two additional solar panels to my system on their own 75 15 MPPT from Victron. I want to place a 20A fuse in between my MPPT and battery busbar. I can't find a 20A midi or mega fuse that can fit my midi/mega distributor. I was wondering if it is oké to get myself a 20A mini ANL fuse and put it in midi distributor. They seem to be the same size but since there are so my different ANL fuse holders on the market, I'm wondering if this would be a wise thing to do.

Cheers, Joy

Kevin Christofora

Wednesday 9th of March 2022

what is your feeling thoughts about an anl fuse versus a breaker? Do they function the same, would something like the blue sea fuse logically eliminate trying to replace a fuse when you are remote/offroad? Just thinking how to build the smartest and easiset set up for my new power inverter. And just curious.... are there any fuses or circuit breakers made in the USA?


Monday 28th of February 2022

Hello Nate: I don't want to be a pain, but I purchased a diagram and I can't access to it, I really want it, I think that your website, your videos and your blog are awesome, I can purchased again, I just want to know if maybe is a glitch in the system or it was a one time issue. I email you last week and forward the purchased invoice for you to check on it, please let me know what to do.

Alex Shneider

Wednesday 1st of December 2021


If I would like to use 2 batteries 75Amp each, what is the recommended fuse AMP? how to calculate the correct FUSE for such application?

Nate Yarbrough

Wednesday 1st of December 2021

The battery bank capacity doesn't have much bearing on fuse size. Here is a tutorial for determining fuse size: