These conductors have multiple ratings THHN or T90 nylon-dry locations not to exceed 90°C THWN-2 - wet or dry locations not to exceed 90°C or locations not to exceed 75°C when exposed to oil 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