UL3817 XLPE Insulation solar cable 3000V electrical wire

This type is internal wiring installed where not subject to movement or mechanical abuse, or where totally enclosed There are many different size and the conductor can be chose, bare copper or tinned copper.  According to:UL subject 758,UL1581 Passes UL VW-1 & CSA FT1 Vertical flame test

Solar AC Cable PV Grounding Wire PV Extension Wire PV Branch Connector Tinned Alloy Wire