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
tenbear wrote:
I don't want to get involved in this, but since the solar panel is a constant current source, a 2% drop in voltage would not change the current so a 2% drop in power would occur.
I don't believe the discussion was ever about a 2% drop in panel voltage, I believe it was relative to wiring which means the wiring loss would stay constant even if the panel voltage changed - as long as current was constant.
Plus while the panel does behave as a constant current source for a substantial part of its operating space, it becomes very non-linear with current as it nears Voc.
EDIT: If the discussion is purely based on panel power while it behaves as a constant current source, then power is linearly proportional to voltage changes, which when discussing this really doesn't help in trying to size the wiring...
