Solar charge controller selection help needed
I am looking to put in a solar system that will produce about 30 amps per day. I choose a semi-flexible 135 watt panel made by Sunpower which meets my capacity needs. My only problem is choosing t...
Forum Discussion
skripo wrote:
...I will go ahead and use the load terminal to feed the panel .
Well, like they say - it's your funeral.
skripo wrote:
My final question is what gauge wire do I need for 5' 12 V 20 amp run to the panel and a 2' from the charge controller to the battery?
http://www.southwire.com/support/voltage-drop-calculator.htm
The voltage from the solar panel is not 12V like you said, but a lot higher. Enter VOC (for PWM controller) or VMP (for MPPT controller). Use "Single Phase". Voltage drop in either section should not exceed 2%.
