1.1 This specification describes single conductor THWN or THHN, a general purpose building wire insulated
with polyvinyl chloride (PVC) and covered with a tough protective sheath of nylon intended for lighting and power
circuits at 600 Volts or less, in residential, commercial and industrial buildings. The wire may be operated at 90°C
maximum continuous temperature in dry locations and 75°C in wet locations and is listed by Underwriters Laboratories
2. Conductor
Conductors shall be solid , Class B or Class C stranded, annealed uncoated copper per UL Standards 83 or 1063.
3. Rated Voltage:
450/750V more than 1.5mm2 single core conductor
300/500V less than 1.5mm2 single core and multi-core conductor
300/300V less than 1.5mm2 multi-core conductor
4. Color of Insulation:
Red, Yellow, Black, White, Green, Light Blue, Grey, Brown, Violet, Orange, Yellow/Green
5. Manufactured Standards: IEC 60227-2007