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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.

Eric Shutt

Friday 30th of December 2022


I know the rule of thumb is to have fuses as close to the battery as possible. Is 12 inches close enough. ? Thank you

Rafael Gomez

Friday 9th of September 2022

Hello i have a 2016 freightliner 2500 170” wheel base van Im looking for a little guidance. Im a tad bite confused I have a Orion-Tr Smart DC-DC Charger Isolated 12-12-30, its charging two life line GPL-30HT AGM batteries, so the main concern is house battery is getting 14.10 volts from the alternator, and the Orion is getting 12.4 volts at the input once it STARTS charging and will only charge/output 12.6 volt the the aux battery. I feel like its the wire I’m using but hard to say I NOT entirely fulfilling the requirements also, the way its wired from the house battery go’s as, running 8g wire all the way, 100amp fuse from the house battery leading to a 150amp circuit braker/switch i have about 23/25 feet of running wire to the Orion charger Also to add to this i recently had to replace my alternator after getting back from a ten day road trip this is what starred my small concern thinking it could have been the charger


Thursday 25th of August 2022

Are fuse holders required to use a mega fuse? It seems like I could just attach one end directly to the terminal and the other end to my 4/0 cable to the inverter, and I can't find any answer as to whether or not they are required.

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