Hello everyone
I tried a search but could not locate the answer to my question. Here is the scenario. 24 volt system , I am going to have 14 panels wired in 7 strings of 2 (ISC is 8.21) to a combiner box in breakers etc which gives me a total of 57.47 amps. From there they will be combined onto a 4 ga wire coming down into the charge controller. This is the wire that I am concerned about. Can this be THHN, THHN2 or TWN? Or is there another type of wire that will pass code.
Thanks!
I tried a search but could not locate the answer to my question. Here is the scenario. 24 volt system , I am going to have 14 panels wired in 7 strings of 2 (ISC is 8.21) to a combiner box in breakers etc which gives me a total of 57.47 amps. From there they will be combined onto a 4 ga wire coming down into the charge controller. This is the wire that I am concerned about. Can this be THHN, THHN2 or TWN? Or is there another type of wire that will pass code.
Thanks!
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