Black 10 AWG PV-Wire, sold as a 500 ft spool. We also sell this wire by the foot (at a somewhat higher price-per-foot). We have male and female MC4 connectors for this wire available as well. The wire is 2000 V rated "RPVU90" stamped, CSA approved for Canada. Rated 90 °C wet and dry. Rated for direct burial. Stranded copper, flexible, 19 strands. XLPE insulation. Deformation-resistant at high temperatures. Excellent moisture resistance, exceeds UL 44. Stable electrical properties over a broad temperature range. Excellent resistance to crush and compression cuts. Resistant to most oils and chemicals. UV/sunlight resistant.