Solar install on a Trailer, newbie questions
Hi, I just got a solar panel and controller for my TT. I want to install the panel on the roof laying flat but am unsure of how to attach it. Q#1 Should I run some screws or bolts into the roof an...
Forum Discussion
curly5759
You can find various lengths of MC4 solar wire, say ya need 15' from panel to controller, you buy one 30' with male/female MC4 connectors, cut it in half and connect the MC4s to the panel and the cut end to the controller. You can also find 'tray cable' with ring terminals attached to one end in various lengths to connect the controller to the batt or make your own.
https://www.solarblvd.com/product-category/cables-wires/solar-panel-wiring/
https://www.renogy.com/renogy-solar-tray-cables/
voltage drop between panel and pwm controller causes the panel to operate at a different voltage and the higher the voltage the less current. Voltage higher than heat reduced Vmp and the current drop is steep.
Controller to batt voltage drop limits batt charge voltage.
Current 'taper' during abs does not solve voltage drop, the panel is ether on or off, the taper comes from more off time and not reduced current from the panel.
Less sun = less panel heat, less current and less voltage drop!
You can find various lengths of MC4 solar wire, say ya need 15' from panel to controller, you buy one 30' with male/female MC4 connectors, cut it in half and connect the MC4s to the panel and the cut end to the controller. You can also find 'tray cable' with ring terminals attached to one end in various lengths to connect the controller to the batt or make your own.
https://www.solarblvd.com/product-category/cables-wires/solar-panel-wiring/
https://www.renogy.com/renogy-solar-tray-cables/
voltage drop between panel and pwm controller causes the panel to operate at a different voltage and the higher the voltage the less current. Voltage higher than heat reduced Vmp and the current drop is steep.
Controller to batt voltage drop limits batt charge voltage.
Current 'taper' during abs does not solve voltage drop, the panel is ether on or off, the taper comes from more off time and not reduced current from the panel.
Less sun = less panel heat, less current and less voltage drop!
