What's the reason behind using 240V inverters with transformers when they have split phase ones?

adolfo · Apr 22, 2024

I hear many opinions, but there is already a fact that the sun gtil2 is working, they are 240, and they work very well in the USA format and if you use 2, with a sensor on each leg of L1 and L2 associated with each of the inverters, you have zero export!... these originally came out as simple phase, they already updated the manuals so they could be put in split phase!!!!! The question is, if this is already more than proven to work, why not do the same, for example with 2 5Kw simple phase 240? and you achieve 10Kw?...

timselectric · Apr 22, 2024

adolfo said:
I hear many opinions, but there is already a fact that the sun gtil2 is working, they are 240, and they work very well in the USA format and if you use 2, with a sensor on each leg of L1 and L2 associated with each of the inverters, you have zero export!... these originally came out as simple phase, they already updated the manuals so they could be put in split phase!!!!! The question is, if this is already more than proven to work, why not do the same, for example with 2 5Kw simple phase 240? and you achieve 10Kw?... View attachment 210931

Those are grid-tied inverters. (Different conversation)
But yes, you can connect to split-phase.
You are using the utility transformer for your 120v loads.

Ampster · Apr 22, 2024

timselectric said:
You are using the utility transformer for your 120v loads.

Yes that is What my Enphase IQ7s do. The IQ7s have no neutral so you can't pull 120v off them direct but since they are grid tied, the grid provides the neutral. In addition, in my case the IQ7s pass through my SolArk which also has a neutral.

What's the reason behind using 240V inverters with transformers when they have split phase ones?

adolfo

New Member

timselectric

If I can do it, you can do it.

Ampster

Renewable Energy Hobbyist

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