16 AWG – 12 Conductor – 600V – Stranded Conductor – Shielded – VNTC Tray Cable. See pictures for more details. CONDUCTORS: Class B stranded bare copper per UL 83 and 62. INSULATION: Polyvinyl Chloride (PVC) per UL 62 for Type TFFN (16 AWG) or UL 83 for Type THWN or THHN wire, nominal thickness is 15 mils.