Panel to Solar Controller Wire Size
As some of you already know, I'm piecing together a solar system. Controller is a Morningstar 45A PWM. Panels will be two 12V 150W wired in parallel. I'm going to be using a combiner box on the roof, ...
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The 4 AWG will work well for you. All sorts of lugs are available for #4 so connectivity is easy.
You're now getting into what Handy Bob advocates, also. :B
If you're going to use a combiner box, IMO the off-the-shelf boxes are expensive. I made my own but there are also cheaper ways to add two terminal strips into a plastic box.
My DIY box:
You're now getting into what Handy Bob advocates, also. :B
If you're going to use a combiner box, IMO the off-the-shelf boxes are expensive. I made my own but there are also cheaper ways to add two terminal strips into a plastic box.
My DIY box:
