Historical
NEMA WC 73:2000 (R2005)
Wire Selection Guidelines For Wires Rated At 200-450 Degrees C
Contains guidelines for calculating amperages and selecting wires for temperatures from 200 to 450C and for voltage ratings up to and including 1000 V RMS. Ampacity charts, temperature correction factors and derating factors are provided along with extensive examples of calculations.
NEMA: National Electrical Manufacturers Association [nema]