Southwire SIMpull THHN or THWN-2 conductors are primarily used in conduit and cable trays for services, feeders, and branch circuits in commercial or industrial applications as specified in the 2008 National Electrical Code. When used as Type THHN, or T90 Nylon conductor is suitable for use in dry locations at temperatures not to exceed 90eC. When used as Type THWN-2 or TWN75, conductor is suitable for use in wet or dry locations at temperatures not to exceed 90eC or not to exceed 75eC when exposed to oil. When used as Type MTW, conductor is suitable for use in wet locations or when exposed to oil at temperatures not to exceed 60eC or dry locations at temperatures not to exceed 90eC (with ampacity limited to that for 75eC conductor temperature per NFPA 79). Conductor temperatures not to exceed 105eC in dry locations when rated AWM and used as appliance wiring material or when used asT90. SIMpull, No Lube Required. Southwire SIMpull THHN or THWN-2 or MTW (also AWM) meet or exceed: All applicable ASTM specifications UL Standard 83, 1581, and 1063(MTW) T90 Nylon/TWN75 sizes through 500 kcmil Standard C22.2 No. 75-08 NOM-ANCE 90e C Federal Specification A-A-59544 National Electrical Code, NFPA 70, 2011 Edition VW-1 - Sizes 14 through 1 AWG CT Use - UL 1685, Sizes 1/0 AWG and larger FT1 - Sizes through 500 kcmil RoHS/REACH Compliant Sunlight Resistant - Marked and listed in all colors sizes 2 AWG and larger NEMA WC 70 Construction Requirements - Manufacturer: Southwire.