# 3-Phase Fronius Inverter

**URL:** https://forum.cleanenergyreviews.info/t/3-phase-fronius-inverter/1775
**Category:** Solar Questions and Comments
**Created:** [March 25, 2021, 8:54am UTC](https://forum.cleanenergyreviews.info/t/3-phase-fronius-inverter/1775 "2021-03-25T08:54:08Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![Marty](https://forum.cleanenergyreviews.info/user_avatar/forum.cleanenergyreviews.info/marty/32/4032_2.png) [@Marty](https://forum.cleanenergyreviews.info/u/Marty)
#### Post date: [March 26, 2021, 10:00am UTC](https://forum.cleanenergyreviews.info/t/3-phase-fronius-inverter/1775/4 "2021-03-26T10:00:24Z")

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There is a bit of a quirk with this one. Whilst the inverter does only have 2 MPPT inputs, and normally you can only have panels facing the same direction using a single MPPT input (i.e panels facing only two different directions in total). However, if you have panels facing the opposite direction to each other (I.e east and west), these can also go into the same MPPT input.

Don’t ask me the technical reasons behind it, but it is a thing, you can see more here:

> [@Solar Power Blacktown NSW](https://perform.discoursehosting.net/t/solar-power-blacktown-nsw/187/4):
>
> Yes no worries installing panels in two different orientations (east and west) in parallel on one MPPT. The strings just have to be the same length (exact same number of panels). It’s quite common to do this when roof space is limited. Best to go as big as possible and install all 6kW for your situation.

I was surprised to learn this recently, so I’m not surprised that the installer is not aware, but you could point them to this thread.

Hope that helps,

Marty

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