Combiner box moutning Question.

offgridcabin2015

Hello Experts. 

I will be adding 6 Q cells. So just so you caN visualize this i'll try to explain. Making a ground mount.  2000 watts to one Charge controller (outback flex 80) i'm a 24v system.
So my question is after wiring them up 2 panel pairs in series / so that's 4 panel to one CC. 

My idea is to mount the combiner boxes ( 2) under the ground mount arrrays and run the 4 wires. ( 2 wires left over from each CC)  (about 50 feet max) back to cabin.I want to run the 4 wires back to cabin. Doees that make sense?
As i'm not wiring in high voltage (to expensive for me). 

Would that be okies / acceptable?

BB.

Can you give a link to the Q Cell panel specs?

Are you looking to install 4x or 6x YYYWatt panels?

One or two FM80's?

Do you want to add more panels/circuits to the array later (i.e., pull enough copper cable to support future expansion)?

More or less--I would be looking possibly at 3x in series and 2x parallel?

• 400 watt panels * 6 = 2,400 Watts
• 2,400 Watts * 0.77 panel+controller deratings * 1/29.0 volts charging = 63 Amps typical best case charging current

Have to look at minimum temperature for your cabin's location (North of Ontario Canada?) to see if your panel will work with 145/150 VDC max input voltage.

If you can do 3s x 2p array, you don't really need a combiner box (no fuses/breakers needed)....

-Bill

offgridcabin2015

Thanks bill for chiming in. 

link for specs on Q cell . i have  6 of these. already bought 15amp breakers to wire two panel in series. 
out back like volts rather than amp / so no need to wire in paraell.. Let the MPPT. DO it's magic.

link: https://cdn.shopify.com/s/files/1/0782/2077/files/Q_CELLS_Data_sheet_Q.PEAK_DUO_XL-G10.3_475-495_2021-01_Rev01_EN_PRELIM_2696c6f4-c881-46d2-9dbe-af8d6cd53106.pdf?v=1648046299

i have 24v system and 2 flexmax 80 charge controllers . so i can only wire up  4000 watts in totaal. i have 2 -six leg combiner boxes.

When you say find out the MIN temperature. it get as cold as -40 here in winter.

i do have 6000 watts in total solar but when i have funds i'll buy another Charge controller / will be Midnite solar. so yes will be wanting to expand down the road too.

Just rather than running all wires to cabin can't i just have go to combiner box under the panels then the excess 4 wires run back to cabin? 
saving on wire?  the distance is 50 feet max.