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. Color-coded, heat- and moisture-resistant PVC (polyvinyl chloride). Nylon (polyamide), clear. 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.