What solar panel specs are used for calculating voltage loss
Which solar panel specs are reasonably used for calculating line voltage loss?
Forum Discussion
BFL13 wrote:Yes exactly. Amps increase to Isc causing the voltage drop along the panel IV curve.
With PWM, panel voltage = battery voltage plus line loss, so howinheck can the controller input be at 16v?
Same as any current limited charger or converter. Voltage sags anytime you are at max amps.
The issue is to have the potential to get the voltage and amps to the controller so that the wire does not create the limit but rather the battery and controller create the limits. This allows the panel to run at the maximum.
The calculation above was to present information on the needed wire so as not to cause resistance induced limits. The calculation was not intended to describe the actual voltages along the wire.
