You can design the drawing and get the distance of solar panel to inverter, then you can order these PV cable from solar cable company.
This is the Video about how to assembly pv cable with MC4 connector in factory,we have published it on Youtube:
Contact: Mike Xu
Phone: +86 13773695989
Tel: +86 513 8410 5505
Email: firstname.lastname@example.org / email@example.com / firstname.lastname@example.org
Add: Chennan industrial park, Juegang, Rudong, Jiangsu, China