24 volt solar panel recommendations?
Is this panel decent? Or is there reason to buy one of the slightly more expensive panels from Solar Blvd? Friend has Blue Sky controller capable of using the 24 volt panels. https://www.solarbl...
Forum Discussion
smkettner wrote:
22a is max with 12v panels, 11.8 is max with 24v panels.
That is the max rating. I realize the wattage is not equal but neither is the output.
why 30a at 12v vs. 22a at 24v? I just take these things at face value. Otherwise the magic smoke comes out. The current limit appears to be controlled by the heat sink temperature. (see thermal protection p6) I assume if the controller is over driven too much it may burn out before thermal protection limits the current.
Morningstar has a max amp limit regardless of voltage.
It is just goofy. They allow for 1.25 like NEC says, but also say with 24v panels (60 cell) that Voc limit is 40v and 290w. (My 230 w panel is 37Voc so that is ok) My Eco-worthy "20 amper" has a 42 or 45v Voc limit depending on which spec you read so the 40Voc limit with a "22 amp" controller sort of fits in I guess. Except it does not allow for putting two 12v panels in series. The Tracer MPPTs at least will do that at their 100Voc limits for extra $ above the Eco-W, but the BlueSky 3000 is more for less :(
The 11.8a Isc limit makes no sense wrt the 22v clipping limit that I can see. IMO the clipping should be at say 1.25 the Isc at STC limit if the controller must have an Isc limit. Most only have Voc limits.
It is all so weird!
