Wire Gauge Required Question
For some reason I just can't understand the various wire gauge tables, and I have tried to, so I am hoping somebody will take pity and do all the work! :) One table that I can follow says that for...
Forum Discussion
BFL13 wrote:
You have to always ask, "Percentage of what?" Playing with tenbear's voltage drop calculator, leaving the same wire, distance, and amps, you get the same voltage drop in volts for any voltage chosen. (same length of wire, same R, same amps)
But the percentage changes when you change the voltage, so the higher the voltage entered, the lower the percentage that same drop is.
In the post following yours ken white says the panel is a constant current device, so the cable will have the same voltage drop regardless of the voltage being produced by the panel. This is what ktmrfs's experiment with the 3 panels in series showed. So the wiring will have a larger percentage effect with low light than with bright sun. That's basic E=IR.
