Interesting parallel vs series video test
Nice video (boat related) on the effects of different types of shade on identical panels parrallel vs serial connections. Parrallel vs Series video Ron W
Forum Discussion
rjsurfer wrote:Sometimes hard to find.
It seems that panel manufacturers don't advertise the number of diodes and how there connected.
For panels with diodes - A diode for every 2 cell rows is a clue: A 4x9 array (common 12V panel) would have 2 diodes while a 6x10 array (common 24V panel) would have 3 diodes. The reason is simple since the junction box area would have the minimum additional wiring for the bypass diodes.
With a actual panel remove the junction box cover and count the diodes (or missing diode locations).
