# Fuse Multiplus 3000/48/35

**URL:** <https://community.victronenergy.com/t/fuse-multiplus-3000-48-35/11456>\
**Category:** DIY\
**Tags:** fuse, multiplus-ii, parallel, beginner\
**Created:** [12 November 2024 21:38 UTC](https://community.victronenergy.com/t/fuse-multiplus-3000-48-35/11456 "2024-11-12T21:38:24Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![JeroenSt](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/jeroenst/32/12543_2.png) [@JeroenSt](https://community.victronenergy.com/u/JeroenSt)\
**Post date:** [12 November 2024 21:38 UTC](https://community.victronenergy.com/t/fuse-multiplus-3000-48-35/11456/1 "2024-11-12T21:38:24Z")

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I have a lifepo4 battery which has an internal fuse of 200A combined with an 200A JK BMS. i want to connect 2 multiplus 3000/48/35 in parallel. Is it allowed to connect them without extra (energy dissipating) fuses?

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**Author:** ![HRTKD](https://avatars.discourse-cdn.com/v4/letter/h/779978/32.png) [@HRTKD](https://community.victronenergy.com/u/HRTKD)\
**Post date:** [13 November 2024 00:22 UTC](https://community.victronenergy.com/t/fuse-multiplus-3000-48-35/11456/2 "2024-11-13T00:22:55Z")

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You cannot run a single wire to both Multiplus. You must run separate wires to each one. Therefore, each wire - and each Multiplus - needs it’s own fuse.

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**Author:** ![JeroenSt](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/jeroenst/32/12543_2.png) [@JeroenSt](https://community.victronenergy.com/u/JeroenSt)\
**Post date:** [13 November 2024 07:15 UTC](https://community.victronenergy.com/t/fuse-multiplus-3000-48-35/11456/3 "2024-11-13T07:15:24Z")

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I can run multiple 35mm2 wires from the battery terminals parallel to the multiplus inverters. The cable can withstand the 200amp current or even more in case of a failure.

The 200amp/20kA fuse already dissipates 18 watts at 200 amp. Adding more will make the dissipation 36 watt at 200 amp.

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<div class="post-metadata">

**Author:** ![JeroenSt](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/jeroenst/32/12543_2.png) [@JeroenSt](https://community.victronenergy.com/u/JeroenSt)\
**Post date:** [13 November 2024 10:51 UTC](https://community.victronenergy.com/t/fuse-multiplus-3000-48-35/11456/5 "2024-11-13T10:51:30Z")

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It could be more like 100 amps. the Multiplus 2 3000/48 can deliver 5500 watt for a short period of time. A 35mm2 cable can handle that, but a 70mm2 will have less dissipation. Although in normal operation a 35mm2 cable would be fine up to 3000 watt. But I could also wire the system with 70mm2 instead.

The wiring isn’t the problem, but Victron recommends a 125 amp fuse for the Multiplus 2 3000/48 but they don’t demand it. So in certain circumstances an other fuse than recommended could be allowed, but I didn’t find any specification of this.