I just put 4x Renogy 100W panels on my roof. I used various VanTech components to mount them. I’ll post complete photos when it is all going. I have four 8ga wires from solar panels going into a combiner box on my roof. The 4 wires together have a squarish cross section (see photo). The round gasket in the fitting that will go into the box won’t seal. How do I keep water out?
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