Solar guru needed

[barny]

I was already to order a 100 watt panel to go with my two 45 watt panels for my fridge setup and got to reading that mixing different watt panels should not be done. So now I am confused please help 12v system I know they need to be in parallel, morningstar prostar 15.

45 watts specs (x 2) - (100 watts specs

Maximum Power Voltage (Vpm): 18.3 Volt - ( 17.40 volts

Maximum Power Current (Ipm): 2.52 Amp - (5.75 amps

Open Circuit Voltage (Voc): 22.2 Volt - (21.60 volts

Short Circuit Current (Isc): 2.69 Amp - (6.32 amps

 

[lcsodiver]

As long as the output voltages are the same mixing different wattages should be fine. I have a 100 watt folding hard panel that I chain with my Brunton 26 watt soft panel to a charge controller that takes it to the batteries.... now you can run into problems if you try to run separate charge controllers for each panel depending on the controllers.

 

[wirenut]

Your specs. are close enough. Hook all 3 in parallel and it will work fine. You will need a fuse in series with each panel before they are combined for safety.

 

[barny]

Thanks guys