Can you run multiple inverter dc runs in single conduit underground? Drawing included

[tommy1uno]

I have a pv system design where the engineer shows the runs for each inverter running in a 3/4 conduit. The runs are 200 feet each and it has a total of 9 runs and a run for the ground going to the inverter.
Question:
Can I run multiple runs in a larger pvc pipe if it is sized according to NEC or am I going to have to stick to plan?
If so at 200 ft what size pvc conduit and how many runs in conduit?
Thanks in advance.


Here is the single line drawing

 

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