Voltage drop from solar controller
or: Here we Go Again. Still trying to get my 420 Watts of solar to fully charge my 484 AH of battery. (Currently in southern Mexico.) Layout: 2 80 Watt panels and 2 130 Watt panels in paralle...
Forum Discussion
Your Vmp is close enough on the panels. You will lose a few watts, perhaps less than 5.
The fuse might be a fire hazard and I would solve that problem in Mexico. And if not I would disconnect the solar and burn the CG power.
Think about better placement of the panel wiring and controller to minimize wire loss. Consider along the roof for the panels. There are usually multiple locations like cabinets, etc where wires can drop from the roof. Wires under the rig might be a option.
Example: I have a rear closet, good for wiring and controller and close to the batteries. Midships I could drop the wiring into a storage area where the controller could connect to existing wiring on the inverter. It's a long run back to the batteries but the cables are 4/0. Remote voltage sense would compensate for the wiring loss including when the inverter is on in which case all solar amps would be used by the inverter.
Just suggesting you think outside the box and consider other options when you return home.
The fuse might be a fire hazard and I would solve that problem in Mexico. And if not I would disconnect the solar and burn the CG power.
Think about better placement of the panel wiring and controller to minimize wire loss. Consider along the roof for the panels. There are usually multiple locations like cabinets, etc where wires can drop from the roof. Wires under the rig might be a option.
Example: I have a rear closet, good for wiring and controller and close to the batteries. Midships I could drop the wiring into a storage area where the controller could connect to existing wiring on the inverter. It's a long run back to the batteries but the cables are 4/0. Remote voltage sense would compensate for the wiring loss including when the inverter is on in which case all solar amps would be used by the inverter.
Just suggesting you think outside the box and consider other options when you return home.
