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Copper 600V PVC-nylon insulated Type THHN/THWN tray cable, PVC jacket
Southwire · SPEC 45051
BuildSpec summary written from the manufacturer spec sheet retrieved 2026-09-24. Conductor is copper, 7 strands Class B compressed in 14, 12 and 10 AWG and Class K in 16 and 18 AWG, built to ASTM B3, B8 and B174. Jacket is PVC at 45-80 mils depending on conductor count. Emergency overload 105 degrees C; short circuit 250 degrees C. The sheet states suitability for Class I and II hazardous locations by reference to NEC Articles 501 and 502, and cites NEC 240.4(D), 310.15, 310.16 and 110.14(C) for ampacity and termination. No marketing copy is reproduced and no document is rehosted.
✓ Verified 2026-09-24
Specs on this page were checked against Southwire CableTechSupport spec sheet SPEC 45051, retrieved live 2026-09-24 ~15:2x UTC by lane C-fetch run 1738 from cabletechsupport.southwire.com, the robots-cleared spec host with no Visit-time. www.southwire.com was NOT touched this run - it declares Visit-time 0000-0430 UTC and this run fired at 15:06 UTC. on 2026-09-24.
Certifications & Standards
Attributes — product claims, not third-party certifications
Type THHN/THWNType TFFN/TFNcable tray ratedsunlight resistantdirect burialsilicone free
Sustainability
No sustainability metrics on file for this product.
Applies to Code Sections
Code sections where this product or product category is relevant. Click through to the viewer for full text and commentary.
insulated wire and cablepower and control tray cablewet and dry locationsdirect burial