# Use of AC2 from a BYD car in a 3-phase MultiplusII environment

**URL:** <https://community.victronenergy.com/t/use-of-ac2-from-a-byd-car-in-a-3-phase-multiplusii-environment/36434>\
**Category:** EVCS\
**Tags:** v2l, 3-phase, node-red, multiplus-ii, byd, cerbo\_gx, diy\
**Created:** [19 June 2025 09:36 UTC](https://community.victronenergy.com/t/use-of-ac2-from-a-byd-car-in-a-3-phase-multiplusii-environment/36434 "2025-06-19T09:36:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Luupus](https://avatars.discourse-cdn.com/v4/letter/l/c2a13f/32.png) [@Luupus](https://community.victronenergy.com/u/Luupus)\
**Post date:** [19 June 2025 09:36 UTC](https://community.victronenergy.com/t/use-of-ac2-from-a-byd-car-in-a-3-phase-multiplusii-environment/36434/1 "2025-06-19T09:36:26Z")

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Hi, no idea if this works.  
If I have e.g. an BYD with an AC-outlet (3.3 kW), can I connect this to AC2 on the Multiplus2 in order to somehow generate my own V2H?  
Would I connect it just to one Multiplus or to all 3 of them?  
Would it work in parallel with the grid - input?  
Could I manage/direct/monitor that from Cerbo (actually from Node Red-MQTT-Cerbo)?

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**Author:** ![BartChampagne](https://avatars.discourse-cdn.com/v4/letter/b/a6a055/32.png) [@BartChampagne](https://community.victronenergy.com/u/BartChampagne)\
**Post date:** [19 June 2025 12:33 UTC](https://community.victronenergy.com/t/use-of-ac2-from-a-byd-car-in-a-3-phase-multiplusii-environment/36434/2 "2025-06-19T12:33:46Z")

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For sure that you should never connect the V2L AC **outlet** from a car to an AC **outlet** of a Multi.  
You _could_ connect it to the AC In of a Multi (if you disconnect it from the grid) or to the AC In2 of a Quattro.  
If you’re running a three phase system you can only connect it to a single unit and then you need to disable the “switch as group” setting, which will most likely render your system incompatible with the grid code and ESS.

In short: technically you _could_ somehow connect them, but you probably shouldn’t.

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**Author:** ![Luupus](https://avatars.discourse-cdn.com/v4/letter/l/c2a13f/32.png) [@Luupus](https://community.victronenergy.com/u/Luupus)\
**Post date:** [19 June 2025 13:06 UTC](https://community.victronenergy.com/t/use-of-ac2-from-a-byd-car-in-a-3-phase-multiplusii-environment/36434/3 "2025-06-19T13:06:58Z")

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Sry, was meant to be AC2 in :).

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**Author:** ![system](https://europe1.discourse-cdn.com/victron/original/1X/21a9a7b5db7c6339715f993568736a7053199995.png) [@system](https://community.victronenergy.com/u/system)\
**Post date:** [7 July 2025 15:34 UTC](https://community.victronenergy.com/t/use-of-ac2-from-a-byd-car-in-a-3-phase-multiplusii-environment/36434/4 "2025-07-07T15:34:19Z")

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