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Input on my roof installed panels. Help with increased efficiency (image attached)

thetubernoober

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Joined
Dec 4, 2022
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77
Had a Solar Contractor install my panels and he has them wired all over the place. Unfortunately due to the roof design it's hard to place panels evenly. I have labeled how think is best to have them wired.

-White (MPPT 1-(first) *#10 panel to be moved to face east
-Pink (MPPT 1-(second)) *MPPT 1(first) and MPPT 1(second) must be similar as they are then combined paralleled in the inverter (EG4 18kPV)
-Blue North (MPPT 2) 5 facing south,
-Blue South (MPPT 3) 5 facing north

I also plan to buy more panels if they can be placed properly.
Large red rectangle is where more panels can be added but is currently not slopped.
Small red rectangle is where another single panel can possible go.


Overhead.jpg

Don't mind the wiring. They will be fixed and secured when panel assignment is finalized.

Please give me your input on how to make this more efficient. Maybe switch up the panel numbering? Optimizers etc?

Thanks!
 
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Have never seen such a crazy roof design. Either architect gone wild or some silly local regulation limit on maximum structure height. Lot of opportunities for roof leaks in the valleys, most likely occurrence of leak is at the two valleys interfacing to east side of flat roof.

Beside #10 moved to join the East facing group, need to split up 1-5 group facing North, and 6-10 facing South on their own MPPT controllers.

Let me guess, the All-In-One inverter only has four MPPT inputs? If that is the case, move 1-5 panels from North facing to South facing slope and connect to South facing MPPT group. North facing panels don't produce much power, assuming this is northern hemisphere location.
 
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I think your best bet would be two more SCCs so you have one for each cardinal direction. Combining panels facing different directions on one MPPT is going to be quite inefficient. SCC's are cheap compared to all that wiring you're going to have to do... Might as well get the most out of the panels.
Also, has your installer never heard of racking??? It looks like he made four holes in that insane roof for each panel.
 
Brand / Model RSD? Are you sure He didnt use optimizers? located where on Earth?

BVM6610-370-HC-BF 370 watt w/420 bifacial (30)

EG4 18kPV- 18000W PV Input | 12000W Output​

No optimizers installed.
Location is Cayman Islands (407 miles south of Florida)
 
Have never seen such a crazy roof design. Either architect gone wild or some silly local regulation limit on maximum structure height.

Beside #10 moved to join the East facing group, need to split up 1-5 group facing North, and 6-10 facing South on their own MPPT controller.

Let me guess, the All-In-One inverter only has four MPPT inputs? If that is the case, move 1-5 panels from North facing to South facing slope and connect to South facing MPPT group. North facing panels don't produce much power, assuming this is northern hemisphere location.
Architect gone wild if what is was lol.

I figured splitting N and S.

Screenshot 2025-01-08 115225.png

East as the first 1+ 1-
West as second 1+ 1-
(these are then parallel in the system)
North as 2+ 2-
South as 3+ 3-
 
I think your best bet would be two more SCCs so you have one for each cardinal direction. Combining panels facing different directions on one MPPT is going to be quite inefficient. SCC's are cheap compared to all that wiring you're going to have to do... Might as well get the most out of the panels.
Also, has your installer never heard of racking??? It looks like he made four holes in that insane roof for each panel.
I'll have to see if a separate SCC will work with my inverter as the inverter an All-in-one system.

For racking we went with mini rails with mini clips due to now many angles the roof has.
 
As long as you have batteries you can always add more SCCs. The inverter/AiO won't care.
Perfect. thanks for the input. Wasn't sure if it was possible with an AIO but i'll definitely bring it up with the contractor as that may be the way to go. I appreciate the help.
 

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