# Connecting cables in the connection points

**URL:** <https://community.victronenergy.com/t/connecting-cables-in-the-connection-points/35063>\
**Category:** DIY\
**Tags:** vehicles, mppt\_controllers, diy\
**Created:** [8 June 2025 08:14 UTC](https://community.victronenergy.com/t/connecting-cables-in-the-connection-points/35063 "2025-06-08T08:14:04Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![SienDeklerck](https://avatars.discourse-cdn.com/v4/letter/s/82dd89/32.png) [@SienDeklerck](https://community.victronenergy.com/u/SienDeklerck)\
**Post date:** [8 June 2025 08:14 UTC](https://community.victronenergy.com/t/connecting-cables-in-the-connection-points/35063/1 "2025-06-08T08:14:04Z")

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Hi everyone,

I have a very practical question and I have searched on the web trying to find an answer. I only found that more people had noticed the problem, but no solutions.

To connect cables of a certain thickness into the MPPT controller and also other devices of Victron, it is really difficult. The cables don’t fit into the small connection points.  
Last time I was using cables of 6mm², as recommended.

Now is a next time and I want to fit the cables in there nice and good, professionally. How do I do that?

Thanks in advance  
Sien

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**Author:** ![lxonline](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/lxonline/32/25567_2.png) [@lxonline](https://community.victronenergy.com/u/lxonline)\
**Post date:** [8 June 2025 18:24 UTC](https://community.victronenergy.com/t/connecting-cables-in-the-connection-points/35063/2 "2025-06-08T18:24:32Z")

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I have not had an issue to date. But then don’t have thw wire you have.

Use ferrules and a decent crimper.

There are several [ideas in wiring unlimited](https://www.victronenergy.com/media/pg/The_Wiring_Unlimited_book/en/dc-wiring.html#UUID-986a9d0a-fbdd-1c25-4061-70a9087514b2).

> **Summary**
>
> Ferrule types:
> 
> Uninsulated ferrules, bare.
> 
> Insulated ferrules with a plastic collar. The collar provides personal protection and ensures the ferrule is not inserted too deeply into the connector.
> 
> Dual wire ferrules for two wires with a plastic collar. These are used when two wires must be inserted into a single connector.
> 
> ![166d18458b250a](https://europe1.discourse-cdn.com/victron/original/3X/3/a/3af8201743224df579e0c1f96957f09750957f55.png)

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**Author:** ![Janvi](https://avatars.discourse-cdn.com/v4/letter/j/a587f6/32.png) [@Janvi](https://community.victronenergy.com/u/Janvi)\
**Post date:** [8 June 2025 19:32 UTC](https://community.victronenergy.com/t/connecting-cables-in-the-connection-points/35063/3 "2025-06-08T19:32:14Z")

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Cable lugs are available for every cable size with a wide range of available hole diameters. For closed connectors it might be helpful to use [a crimp pin connector](https://uk.rs-online.com/web/p/crimp-pin-connectors/8092366) for connections of oversized wires.

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**Author:** ![SienDeklerck](https://avatars.discourse-cdn.com/v4/letter/s/82dd89/32.png) [@SienDeklerck](https://community.victronenergy.com/u/SienDeklerck)\
**Post date:** [10 June 2025 19:50 UTC](https://community.victronenergy.com/t/connecting-cables-in-the-connection-points/35063/4 "2025-06-10T19:50:27Z")

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Thank you both for your answers. I have been learning more about the correct use of the ferrules and the crimp connector certainly looks interesting. Thank you!