THHN/THWN-Circuit Sized

THHN/THWN-Circuit Sized


Where To BuySpec Sheet PDF

600-volt building wire for use in commercial and industrial applications as specified in the NEC®, including machine tool and appliance wiring. Marked VW-1.


Solid conductors

  • Uncoated copper per ASTM-B3

Stranded conductors

  • Uncoated copper per ASTM-B3, ASTM-B787

Color-coded, heat- and moisture-resistant PVC (polyvinyl chloride)


Nylon (polyamide), clear

Industry Standards

UL 83: File No. E15119
UL 1063 (MTW): File No. E85964
AWM: File No. E11829
c (UL) Standard C22.2 No. 75
ASTM Standards: B3, B8, B787
WC70/ICEA S-95-658
Federal Specification A-A-59544
NFPA-70: National Electrical Code®

Cerrowire LLC self certifies that these products, in stranded constructions, satisfy the product safety requirements identified by the European Low Voltage Directive 2006/95/EC.

*It is the sole responsibility of the end user to determine suitability of this product for its intended end use and application.

Surface Print

Stranded and Solid Sample:  CERROWIRE VINYLON-A 14 AWG (2.08mm2) (UL) THHN or THWN-2 or AWM GR2 VW-1 600V – C (UL) TWN75 or T90 NYLON


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