I have some cable that I bought from a cable installer. It has a thick black plastic outer shield, next a foil layer, next a braided wire layer, then another foil layer, and then a tough white plastic center, and finally the solid copper center. There are no markings anywhere. I gauged the center copper wire and got .042 to fit the size hole with the copper center wire. The cable tech. man said it was waterproof and I could bury it . My question is: can I use this to any purpose for 2 Harbor Freight Kits (45 watt each) equaling 90 watts. Connected together. Is it wise to use this type wire for solar ? Thanks for your expertise !
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