F. T Cable Co., Ltd.
| Application | Building |
| Size | 8 10 12 14 16 AWG |
| Packaging Details | Wooden Drum、cardboard box、wooden pallet |
| Conductor | copper |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Color | Customized Colors |
| Jacket | PVC |
| Rated Voltage | 600V |
| Supply Ability | 800–1500 kilometers per month |
| Model Number | thhn cable |
| Certification | CE，VDE,SO 9001，ul |
| Place of Origin | china |
| Brand Name | F.T |
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Product Specification
| Application | Building | Size | 8 10 12 14 16 AWG |
| Packaging Details | Wooden Drum、cardboard box、wooden pallet | Conductor | copper |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union | Color | Customized Colors |
| Jacket | PVC | Rated Voltage | 600V |
| Supply Ability | 800–1500 kilometers per month | Model Number | thhn cable |
| Certification | CE，VDE,SO 9001，ul | Place of Origin | china |
| Brand Name | F.T | ||
| High Light | UL 83 thhn building wire ，600V thhn building wire ，Building cable thhn awg 12 | ||
UL 83 THHN Building Wire – 600V Copper Conductor for Conduit Wiring & Control Panels
THHN cable (Thermoplastic High Heat-resistant Nylon-coated) is one of the most widely used single-conductor building wires in North America and international projects. Rated 600V, the conductor is soft annealed copper, insulation is heat-resistant PVC, with an outer nylon jacket. It is suitable for conduit wiring (EMT/PVC), control panels, and internal equipment wiring .
Compared to ordinary THW or TW wires, THHN offers better heat resistance (90°C dry location) and a low-friction nylon layer that greatly improves pulling efficiency. It also meets UL 83 VW-1 flame retardancy, complying with building electrical safety codes .
| Parameter | Value |
| Standard | UL 83 (CSA C22.2 No. 75 optional) · NEC applicable sections |
| Rated Voltage | 600V |
| Conductor Material | Annealed copper (ASTM B3), solid or stranded |
| Insulation | Heat-resistant flame-retardant PVC + nylon jacket |
| Temperature Rating | 90°C dry / 75°C wet (per UL 83 Table 5.1) |
| AWG Range | 14 AWG – 4/0 AWG (2.08 mm² – 107.2 mm²) |
| Flame Test | VW-1 (UL 83 vertical flame) passed |
| Min. Bending Radius | 6 × cable OD (NEC 300.34 recommendation) |
| Insulation Resistance | ≥ 10 MΩ·km at 20°C |
Easy pulling, higher productivity – Nylon jacket dynamic friction coefficient ≤0.35, reduces damage during wire pulling.
Superior heat resistance – 90°C dry location rating, suitable for high-load circuits.
Oil & chemical resistance – Passes ASTM D543 tests for mineral oil, weak acids and alkalis.
Full certification list – UL 83 Listed, NEC 2023, cUL (CSA), RoHS, ISO 9001:2015. Third-party test reports (SGS / Intertek) and manufacturer's COC available upon request.
Industrial Control & Distribution – MCC buckets, PLC cabinets, motor leads. Nylon jacket resists oil and chemicals.
Commercial Building Wiring – Conduit installations (EMT/PVC) for lighting, receptacles, HVAC branch circuits per NEC 300.4.
Equipment Internal Wiring – CNC machines, conveyors, compressors – flexible and easy to route inside enclosures.
Q: What is the difference between THHN and THWN-2?
A: Per UL standards, THHN is rated 90°C dry / 75°C wet. THWN-2 is rated 90°C wet and dry, offering better moisture resistance. Most modern cables are dual-rated “THHN/THWN-2”, which can be used interchangeably. [NEC 310.4]
Q: Can THHN cable be directly buried?
A: No. THHN is not designed for direct burial. It must be installed in conduit. For direct burial applications, use UF or USE-2 cables per NEC 300.5.
Q: How to select the correct AWG size for a load?
A: Refer to NEC Table 310.16, then apply ambient temperature correction factors (Table 310.15(B)(2)(a)) and conduit fill adjustments. Example: 12 AWG copper THHN at 30°C with 3 current-carrying conductors → 20A (75°C terminal limitation).
Q: What is the expected service life of THHN cable?
A: In dry indoor applications, 30–40 years. Main aging factors: prolonged overload (>90°C), direct UV exposure, chemical attack, and mechanical wear.
Q: Is aluminum conductor THHN available?
A: UL 83 allows aluminum THHN, but in practice aluminum building wires are often XHHW-2 or SE cables. Copper THHN remains the preferred choice for terminal reliability.
If you have any needs or questions, please feel free to contact us. We have a professional technical and sales team that can assist you in resolving any procurement issues you may have.
Phone
+86 13892838980
Company Details
Business Type:
Manufacturer
Year Established:
2024
Total Annual:
15Million-60Million
Employee Number:
200~250
Ecer Certification：
Verified Supplier
F.T Cable Co., Ltd. is a professional cable manufacturing factory specializing in overseas export markets, integrating cable R&D and design, large-scale production, personalized customization, and export trade. Rooted in China's power cable industry cluster, the company focuses on serving the gl... F.T Cable Co., Ltd. is a professional cable manufacturing factory specializing in overseas export markets, integrating cable R&D and design, large-scale production, personalized customization, and export trade. Rooted in China's power cable industry cluster, the company focuses on serving the gl...
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