wire size...

looking for suggestions on wire size.
3 strings of  12 panels,   36 panels  total.
ea panel is 240w  (Hanwha panels)

using as grid tied,     ground mount.
1. wire size from ea panel to  combiner.   -    total length  of ea string 48ft
2.  wire size from  combiner to inverter.    -   distance from combiner to inverter is 50 ft
3.  wire size from inverter to elect panel.  -   distance from inverter to elect panel is 5 ft.


one last ( yea right)  question.  planned to wire it in series, ?

thanks

1oldmf     (one old Massey Ferguson)