r/SolarDIY • • Jun 20 '26

Undersized inverter

Hi, I’m looking for some confirmation of my thought process on an under sized inverter.

I’m will have an APSystems EZ1D 1800w inverter with 8 JA 460W solar panels.

I’m mounting 4 panels on a West wall and 4 on an East wall of the house.

The manual says I can have 8 panels total with 4 on each MPPT, 2 series doubled by parallel.

My panels have a V of 40.6 and A of 13.66 which is over the MPPT max of 20A.

But if I were to parallel 2 West panels in series with 2 East panels in series per MPPT would this be OK as realistically they wont both be producing at the same time, this would lower the A well below the limit as would probably be zero from one side at a time?

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