What gauge wire?
I'm going to be adding a second solar panel and need to know what gauge wire I need for 2/140w panels on a 35' run. Thanks Keith
Forum Discussion
Assuming you're connecting the panels in parallel, the distance is 35' one way and PWM controller then 10ga would give you a 1.5V drop plus the additional drop to the battery.
You might want to consider a combiner box and then 8 ga to the controller. You should get more information if you post all of the details like controller type, all existing wiring lengths and gauge and panel specs.
You might want to consider a combiner box and then 8 ga to the controller. You should get more information if you post all of the details like controller type, all existing wiring lengths and gauge and panel specs.
