Wiring Diagram Solar Panels 12v. In fact by wiring several solar panels in series we increase the voltage keeping the same current while wiring them in parallel we increase the current keeping the same voltage. 12v solar panels charging kits for caravans motorhomes boats yachts marine.
So if you had 2 x 80w panels the current would be 2 x 80 12 133a. Jamies 12volt wiring page. The first 2 diagrams below show a 600 watt solar panel wiring diagram wired in parallel and series with 3 x 200w panel configurations.
Although the solar arrangement in the solar panel wiring diagram above isnt the best for the long term life of your battery because there is more stress on the system it does provide a way to reach the capability of a bigger system without having to add more panels batteries.
With the series parallel arrangement in the solar panel wiring diagram above you can power 48 volt appliances while charging your batteries faster 14 amps thus storing more energy per available daylight hours plus you get 420 amp hours of storage capacity. The following solar panel wiring diagram shows that a 12v 120w pv panel is connected to the solar charge controller panel negative terminal of panel to the negative terminal of mppt charge controller. So if you had 2 x 80w panels the current would be 2 x 80 12 133a. The solar regulator needs to exceed this value.