Jason

Hi. Thank you for the information. I was wondering about the fuses available. I will put the switch in

I am very grateful for your feed back. Thank you very much.

All of the research done has been on parallel. I am concerned about sun blocking/ shade over panels. Not clear to me. Does the whole panel/ system suffer if one small (example 12"x6' glass)part of the panels are sun blocked? Everything thing is 12volt in the van also.

Hi John. Great information. Truly appreciated. Here's another question. The solar panels come with attached 12 gauge wire with mc4 pre installed connectors. I plan on using mc4 combine connectors with 20amp fuses to combine the 2 panels on the roof. From the roof to the mppt is going to be 8 gauge. What's your thoughts on the 8 gauge and amps running through it? Also, can mc4 connectors be attached to 2 and 4 gauge? I was thinking about cutting the mc4 off and connecting the existing solar panel 12 gauge to the heavier 2 or 4 gauge. The distance from panel to mppt is 15ft. Thanks again. Jason

There is room. Extended van. Empty roof. The solar panels come with attached 12 gauge wire with mc4 pre installed connectors. I plan on using mc4 combine connectors with 20amp fuses to combine the 2 panels on the roof. From the roof to the mppt is going to be 8 gauge. What's your thoughts on the 8 gauge? Thanks for the information and the calculator.

Hello. New to the site. And new to solar. Been reading and watching videos on the subject. I'm considering two 400 watt panels (41vmpp per panel with mc4) in parallel for a 12 volt system on a van. My concerns are amps through the wire and what gauge wire to use. I would be using the Epever 100A mppt charge controller with 3 100ah lithiums. I would greatly appreciate your knowledge and experience. Thanks Jason