All sizes are rated gasoline and oil-resistant II.
Construction:
Conductors:
Solid, uncoated copper conductors per ASTM-B3
Stranded, uncoated copper conductors per ASTM-B3, ASTM-B787 and ASTM-B8
Insulation:
Color-coded Polyvinyl Chloride (PVC), heat and moisture-resistant, flame-retardant compound per UL-1063 and UL-83
Applications:
Type THHN/THWN-2 building wire is intended for general purpose applications as defined by the National Electrical Code (NEC).
Applications requiring Type AWM: the conductor is appropriate for use at temperatures to not exceed 105 C in dry locations.
Type THHN/THWN-2 is permitted for new construction or rewiring for 600-volt applications.
Applications requiring Type THHN or THWN-2: the conductor is appropriate for use in wet or dry locations at temperatures not to exceed 90 C or not to exceed 75 C in oil or coolants.
Applications requiring Type MTW: the conductor is appropriate for use in dry locations at 90 C, or not to exceed 60 C in wet locations or where exposed to oils or coolants.
Jacket:
A tough, polyamide, Nylon outer covering per UL-1063 and UL-83.