Dual-Rated THHN/THWN-2 Copper Wire - 12 AWG/10 AWG/8 AWG | 4/0 AWG/250 kcmil/500 kcmil
Product Overview
CT-rated THHN/THWN-2 cable delivers superior performance for power distribution in residential, commercial, and industrial applications. Featuring annealed copper conductors, flame-retardant lead-free PVC insulation, and abrasion-resistant nylon jacketing, this 600V-rated wire meets rigorous UL 83/1063 standards for both dry and wet locations.
Key Applications
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Conduit & cable tray installations
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Service entrances, feeders & branch circuits
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Machine tool wiring (MTW)*
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Commercial lighting & power systems
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Industrial control panels
*Stranded conductors only for MTW applications
Construction & Materials
| Layer | Specification |
|---|---|
| Conductor | Annealed copper (solid/stranded), 2.0mm² to 500mm² |
| Insulation | Lead-free PVC • Flame-retardant • UL-listed • RoHS compliant |
| Outer Jacket | Polyamide (Nylon) • Oil/chemical resistant • Abrasion-proof • Low-friction surface |
| Color Coding | Standard: Black, White, Red, Blue, Green, Yellow (custom colors available) |
Technical Specifications
| Parameter | Rating |
|---|---|
| Voltage | 600V AC |
| Temperature | • 90°C dry/damp locations • 75°C wet locations (THWN) • 90°C wet locations (THWN-2) |
| Standards | UL 83, UL 758 (AWM), UL 1063 (MTW*), PNS 35 |
| Environmental | RoHS compliant • Lead/Pb-free • Halogen-free formulation |
Performance Advantages
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Enhanced Safety
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FT1 flame rating exceeds standard THHN cables
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Self-extinguishing properties reduce fire propagation
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Durability
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Nylon jacket resists oils, chemicals & abrasion
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Withstands mechanical stress during installation
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Eco-Compliance
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100% lead-free stabilizers
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Meets global RoHS requirements
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Installation Efficiency
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Low-friction nylon allows 40% easier conduit pulling
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Color-coded per NEC phase identification
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Engineering Selection Guide
| Conductor Size | Insulation Thickness | Nylon Thickness | Typical Use Cases |
|---|---|---|---|
| 2.0–6.0mm² | 0.76mm | 0.15mm | Branch circuits • Control wiring |
| 10–50mm² | 0.76–1.14mm | 0.20mm | Feeders • Lighting systems |
| 70–500mm² | 1.52–2.41mm | 0.30mm | Service entrances • High-current runs |
Refer to NEC Table 310.16 for ampacity calculations
Compliance & Installation
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NEC Classification: Types THHN & THWN-2 (Article 310)
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Bending Radius: Minimum 5x cable diameter
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Conduit Fill: Follow NEC Chapter 9 Table 1
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Wet Locations: Use THWN-2 rating for 90°C wet environments
Packaging Options
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Coils: ≤4mm² (500ft/152m)
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Wooden Drums: 6–120mm² (1000ft/305m)
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Reels: >120mm² (custom lengths)