1.color-coded PVC jacket . 2.Through ULVW - 1SC vertical retardant test. 3.Reference standards: UL758, UL1581 Tinned or bare ,stranded or solid copper conductor,32-16AVG .color-coded PVC insulationTinned or bare copper wire spiral shield. PVC jacket .Rated temperature: 80 °C. Rated voltage 300volts.Through ULVW - 1SC vertical retardant test.Reference standards: UL758, UL1581