Solar Wire Size..??? Fuses on panels...??

[Rbertalotto]

Ok, ready to install my solar system and I need to buy wire to go from panels to the solar controller

Two, 140W panels, wired in parallel

Here are the specs on the panel:



The wire length of run from panels to controller will be 30-35'

I'm a bit confused on wire size......

Also, do these panels need to be fused at the panels? If so, what size fuse.

I really appreciate all the help this forum has afforded me over the years. Hope to repay it someday.

[red31]

see page 5 of 16, 4 gauge (36') for 20A (Isc *2, 8.48A * 2 = 17A)
http://www.bogartengineering.com/sites/default/files/docs/SC2030-7-6-15-UsersInstruc.pdf

A circuit breaker with the ability to turn off is a good idea so the panels can be turned off at the controller when needed.