# Advice on connecting stiff 70mm² DC cable to MultiPlus-II 48/5000 (Belgium, AREI) **URL:** \ **Category:** DIY\ **Tags:** multiplus-ii, diy\ **Created:** [19 November 2025 23:49 UTC](https://community.victronenergy.com/t/advice-on-connecting-stiff-70mm-dc-cable-to-multiplus-ii-48-5000-belgium-arei/48946 "2025-11-19T23:49:08Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Pigmaster](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/pigmaster/32/16853_2.png) [@Pigmaster](https://community.victronenergy.com/u/Pigmaster)\ **Post date:** [19 November 2025 23:49 UTC](https://community.victronenergy.com/t/advice-on-connecting-stiff-70mm-dc-cable-to-multiplus-ii-48-5000-belgium-arei/48946/1 "2025-11-19T23:49:08Z")
Hello everyone, I’m currently installing a Victron MultiPlus-II 48/5000. According to the documentation, 70 mm² DC cable is required, so I want to stick to that. To comply with Belgian AREI regulations (cable in a duct/bundle), I chose a B2ca RZ1-K 70 mm² cable (Topcable). However, I’m running into a problem: the cable is so stiff that making the bend to the MultiPlus terminals almost mechanically stresses the clamps—not ideal. The classic flexible welding cables (H01N2-D) or battery cables are much easier to handle, but as far as I know, they do not have the required fire reaction class for this type of installation. My questions: - How do you guys handle this so that it fits physically **and** stays AREI-compliant? - For a 48/5000, is 70 mm² really necessary? I often hear that 35–50 mm² is actually sufficient. Any tips or experiences are welcome! PS: I’ve attached a photo showing the furthest I can bend the cable without putting too much stress on the MultiPlus terminal. ![image](https://europe1.discourse-cdn.com/victron/original/3X/b/f/bfee873b5ff58db48e058fe365d3db747535b92d.jpeg) ![image](https://europe1.discourse-cdn.com/victron/original/3X/f/3/f3afa5c8682203a817ea60e73737cbded77e4119.jpeg) ---
**Author:** ![Pigmaster](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/pigmaster/32/16853_2.png) [@Pigmaster](https://community.victronenergy.com/u/Pigmaster)\ **Post date:** [19 November 2025 23:51 UTC](https://community.victronenergy.com/t/advice-on-connecting-stiff-70mm-dc-cable-to-multiplus-ii-48-5000-belgium-arei/48946/2 "2025-11-19T23:51:20Z")
PS2: Yes, I know the AC side is currently using H01N2-D. That was a mistake on my part and it will be replaced before inspection as this is Eca cable that is not allowed in ducts or bundles. ---
**Author:** ![Daza](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/daza/32/29371_2.png) [@Daza](https://community.victronenergy.com/u/Daza)\ **Post date:** [20 November 2025 13:57 UTC](https://community.victronenergy.com/t/advice-on-connecting-stiff-70mm-dc-cable-to-multiplus-ii-48-5000-belgium-arei/48946/3 "2025-11-20T13:57:04Z")
Nice build the biggest issue I had with 95mm2 is the lug as you can’t get it square on with the cable so I use a cone bit to taper the lug so it can just be ribbed over the threaded bolt and I would say if you could warm the cable it may help you out too ---
**Author:** ![Pigmaster](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/pigmaster/32/16853_2.png) [@Pigmaster](https://community.victronenergy.com/u/Pigmaster)\ **Post date:** [21 November 2025 00:35 UTC](https://community.victronenergy.com/t/advice-on-connecting-stiff-70mm-dc-cable-to-multiplus-ii-48-5000-belgium-arei/48946/4 "2025-11-21T00:35:05Z")
tapering the lug might indeed just give me the marge i need to get it over the thread. the straighter it gets, the more easy it should go. I’ll test with the current testcrimp before cutting away at my multiplus. ---
**Author:** ![Daza](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/daza/32/29371_2.png) [@Daza](https://community.victronenergy.com/u/Daza)\ **Post date:** [21 November 2025 07:14 UTC](https://community.victronenergy.com/t/advice-on-connecting-stiff-70mm-dc-cable-to-multiplus-ii-48-5000-belgium-arei/48946/5 "2025-11-21T07:14:04Z")
Let us know how it goes ---
**Author:** ![Pigmaster](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/pigmaster/32/16853_2.png) [@Pigmaster](https://community.victronenergy.com/u/Pigmaster)\ **Post date:** [28 November 2025 16:29 UTC](https://community.victronenergy.com/t/advice-on-connecting-stiff-70mm-dc-cable-to-multiplus-ii-48-5000-belgium-arei/48946/6 "2025-11-28T16:29:31Z")
I got it on there after tapering the lug. Wonderfull. (Yes i know I need to crimp a new lug to the cable) ![AB652443-C206-4F8D-8145-F3633C7773B5](https://europe1.discourse-cdn.com/victron/original/3X/1/1/117b058be60d0e82ea01fbe917f41b0bbcfec77e.jpeg) But now i get the next issue with this cable not being flexible enough. I made some 3D printer molds to force the cables to use the biggest radius there is available. Guiding me in how to bend each cable. ![IMG_2726.HEIC](https://europe1.discourse-cdn.com/victron/original/3X/0/7/07899f7186f784fdc26678c8946eae0d7e5625ca.jpeg) But i just cant make the bends that i need. Any of you have any experience with cabling in Belgium? The Victrons manual states that I need a 70mm² cable for MultiPlus-II 48/5000 class 6 Belgium AREI (Inspection of your electrical installation) requires that cables in ducts are rated Cca (fire rating) Issue is that a Cca class 6 cable does not exist. So the cable I have is class 5 but this is just to stiff to bend. My question what cable are you useing, and did it get approved in Belgium? ---
**Author:** ![Pigmaster](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/pigmaster/32/16853_2.png) [@Pigmaster](https://community.victronenergy.com/u/Pigmaster)\ **Post date:** [28 April 2026 09:22 UTC](https://community.victronenergy.com/t/advice-on-connecting-stiff-70mm-dc-cable-to-multiplus-ii-48-5000-belgium-arei/48946/7 "2026-04-28T09:22:00Z")
I moved away from the class 5 cable. And changed it out by class 6 cable.This is not Cca rated but will see what the inspection states. ---
**Author:** ![system](https://europe1.discourse-cdn.com/victron/original/1X/21a9a7b5db7c6339715f993568736a7053199995.png) [@system](https://community.victronenergy.com/u/system)\ **Post date:** [12 May 2026 09:22 UTC](https://community.victronenergy.com/t/advice-on-connecting-stiff-70mm-dc-cable-to-multiplus-ii-48-5000-belgium-arei/48946/8 "2026-05-12T09:22:04Z")
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