# Quattro Functionality

**URL:** <https://community.victronenergy.com/t/quattro-functionality/9034>\
**Category:** DIY\
**Tags:** marine, beginner, multiplus-ii\
**Created:** [25 October 2024 22:30 UTC](https://community.victronenergy.com/t/quattro-functionality/9034 "2024-10-25T22:30:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mettamarine](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/mettamarine/32/7262_2.png) [@mettamarine](https://community.victronenergy.com/u/mettamarine)\
**Post date:** [25 October 2024 22:30 UTC](https://community.victronenergy.com/t/quattro-functionality/9034/1 "2024-10-25T22:30:37Z")

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I have a 50amp 120Vac generator and 120Vac shore power and I want to install a Victron inverter/charger down stream of those two items. I can install a selector switch to choose between the two but will a Quattro automatically switch between the two power sources? Thanks

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**Author:** ![Justin](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/justin/32/24_2.png) [@Justin](https://community.victronenergy.com/u/Justin)\
**Post date:** [25 October 2024 23:53 UTC](https://community.victronenergy.com/t/quattro-functionality/9034/2 "2024-10-25T23:53:38Z")

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Yes, the Quattro has 2 AC inputs, and will automatically switch between them with priority given to AC-In 1. In many cases the generator will be installed to AC-In 1 and shore to AC-In 2 so that when connected to shore but preparing to leave dock/pedestal you can start the generator, the Quattro will switch to that AC input, and you can then disconnect shore power without ever losing AC input.