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How To Crimp A Wire Ferrule

A wire ferrule is a simple way to finish off the end of stranded copper wire and prepare it to be used in a screw terminal like you’d find on a charge controller.

Crimping a wire ferrule onto a stranded wire can turn a ugly, high resistance messy wire end into a neat and tidy, low resistance professionally finished wire.

Wire Ferrules by Size

Wire Ferrule Crimpers

How to Crimp Wire Ferrules (Video)


Saturday 28th of January 2023

Doing ferrules for the first time with AWG2 and the 150/45 victron charge controller. It says it takes AWG2 but the crimper leaves a non square crimp. Do I just tap this square or how do you work with that?

Scott Schultz

Wednesday 27th of October 2021

Hey Nate, There has been a lot of talk about Ferrules, I am wondering if you could touch on then for use in the new push connections on the Victron Multiplus II, there is some confusion out there, and a recent video put out by AM Solar says not to use ferrules in these connections, however the interpretation from the Victron installation manual can go either way. Im sure as a Brand Ambassador you may be privy to the best info. Thanks for your help.

Nate Yarbrough

Wednesday 27th of October 2021

I just looked up the video you're talking about and understand the concern by AM solar. I have not run into that issue yet, but Ferrules are indeed approved for use in the Multiplus by Victron. We actually talked about it in the training I am teaching at yesterday as a good solution for those who are having trouble getting stranded wire into the terminals. I would be surprised if a properly crimped ferrule came loose inside of the Multiplus as once a ferrule is crimped, it is on there REALLY tight. But remember, ferrules are optional... If they are causing more issues than they are fixing; don't use them.

Joe Winkelmann

Tuesday 19th of October 2021

I noticed you use square ferrules vs hex. Do you use square ferrules in round holes? I think the solar panel disconnect you recommend has round holes. It seems like a square ferrule in a round hole would not have many contact points between the ferrule and the hole?

Arshad Hussain

Tuesday 4th of May 2021

No comments

David A Smith

Saturday 17th of April 2021

The crimping tools for 6/0 wire are either not available or very long lead times. Searching for just that reveals nothing. Guess we won't be using wire ferrules.