This is an MC4 extension cable. Solar PV wire (#10 RPVU90) with a male MC4 connector at one end, and female MC4 connector at the other. For use with solar panels that use the standard MC4 connectors or compatible (which is most of them).
Always Home Run with the correct colour for tracing.
Cable is BLACK, with opposing MC4 connector genders on each end.
Single cable, stranded copper conductors, #10 AWG PV cable (UV resistant) RPVU90
1000V wire rating.