Series or Parallel 9 panels on a pole mount

[bcroe]

At that distance you need a series setup, to get reasonable
efficiency with reasonable size wire. Run the figures on the
resistance of 400 ft loop of 10ga and see why. Bruce Roe

[SunEagle]

Hi all, I have 9, 310 watt panels to be put on a pole mount about 200ft away from the off grid house. Should they be connected in parallel or series? Also, would 10awg be the size wire I should use for the 200ft run?
Thank you!

If you are worried about voltage drop (AC or DC) then wiring the panels in series should get you the highest DC voltage. You didn't mention if you are using an inverter or battery charger to convert to AC and where that is being done. So to really answer your question will require a little more information on your system.

[Sean Montana]

Thank you JPM. Yes 120 v ac & will be converted from dc to ac at the cabin. Its string and not micro. I will find out the rest. Thank you again!

[J.P.M.]

Assuming you're running the house on 120 V AC, wire and string size depends on how and where you convert from DC to AC and the particulars of the inverter(s) - string or micros - you're using as well as where the inverter(s) is/are located. See local codes or tables for min. safe/required wire sizes as f(wire length, max. line voltage) and don't forget to take min/max ambient air temp. into account when estimating max. panel voltage.

[Sean Montana]

Hi all, I have 9, 310 watt panels to be put on a pole mount about 200ft away from the off grid house. Should they be connected in parallel or series? Also, would 10awg be the size wire I should use for the 200ft run?
Thank you!