diy solar

diy solar

Calculate acceptable over paneling.

no, you've got it backwards

You are describing a 4s2p configuration
when combining panels in series the voltage adds up while the amps remain the same
Parallel strings will add up the amps while the voltage remains the same

with a VOC of 40.5 volts a string of 4 panels will have a voltage of 162v resulting in a deep fried SCC
dropping to 3 panels in series leaves you one panel short for a balanced 3s3p configuration

with 8 panels you're looking at a 2s4p configuration
2s4p results in 81v and 43.6a

Pfeeeew!
thank you so much. That would have been an expensive mistake.
 
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