Southwire SIMpull THHN copper conductors are primarily used in conduit and cable trays for services, feeders and branch circuits in commercial or industrial applications as specified in the National Electrical Code. Voltage for all applications is 600 volts. SIMpull THHN copper conductors are designed to be installed without application of a pulling lubricant. These conductors have multiple ratings. Depending upon the product application allowable temperatures are as follows:
THHN or T90 Nylon- Dry locations not to exceed 90 C
THWN-2- Wet or dry locations not to exceed 90C or locations not to exceed 75 C when exposed to oil
THWN- Wet locations not to exceed 75 C or dry locations not to exceed 90 C or locations not to exceed 75 C when exposed to oil
TWN75- Wet locations not to exceed 75 C
MTW- Wet locations or when exposed to oil at temperatures not to exceed 60 C or dry locations not to exceed 90 C (with ampacity limited to that for 75 C conductor temperature per NFPA 79)
AWM- Dry locations not to exceed 105 C only when rated and used as appliance wiring material
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