THHN stands for "T hermoplastic H igh H eat-resistant N ylon-coated." THHN is a code for heat-resistant thermoplastic wire which is allowed for use in dry to damp locations and rated for a maximum temperature of 90ºC (194ºF). THHN is a 600 volt building wire, is for use in residential, commercial, and industrial applications.


Color Code Chart
Black: 0 Violet: 7
Brown: 1 Gray: 8
Red: 2 White: 9
Orange: 3 Tan: 10
Yellow: 4 Pink: 11
Green: 5 Light Blue: 12
Blue: 6 Light Green: 14

Anaheim Wire Part Number: 



Do you have questions about THHN? Call our Anaheim Wire Specialists at 1-800-439-0549