Type TW/THW Electrical Wire 600V - Copper Conductor, Wet/Dry Location Rated
Product Overview
The Type TW/THW Wire is a versatile, dual-rated electrical cable designed for power, grounding, and lighting systems in residential, commercial, and industrial environments. Rated for 600 volts and operating temperatures from -25°C to 75°C, this PVC-insulated wire combines cold resistance, flexibility, and compliance with NEC, ASTM, and CALTRANS standards. Ideal for both wet and dry locations, it ensures reliable performance in diverse climatic conditions.
Key Features
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Voltage Rating: 600V for low-voltage electrical systems.
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Temperature Range: -25°C to 75°C (wet/dry), suitable for extreme cold and moderate heat.
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Cold Resistance: Maintains flexibility and integrity in sub-freezing environments.
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Dual Rating: Compliant with TW (Thermoplastic Wet) and THW (Thermoplastic Heat and Water Resistant) standards.
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Conductor Options: Solid or stranded, bare or coated annealed copper for versatile installations.
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Safety: Spark-tested at 7500 VAC to ensure insulation integrity.
Construction Details
Conductor
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Material: Annealed copper per ASTM B-1, B-3, B-8.
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Types: Available in solid or stranded configurations, with optional coating for corrosion protection.
Insulation
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Material: PVC (polyvinyl chloride), concentrically applied for uniform coverage.
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Benefits: Resists moisture, abrasion, and environmental stress while maintaining flexibility.
Technical Specifications
| Parameter | Specification |
|---|---|
| Voltage Rating | 600V |
| Temperature Range | -25°C to 75°C (wet/dry) |
| Conductor Material | Annealed Copper (solid/stranded, bare/coated) |
| Insulation Material | PVC |
| Standards | ASTM B-1/B-3/B-8, NEC 310, NFPA 70, CALTRANS |
Applications
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Residential Wiring: Circuitry, lighting, and grounding in homes.
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Commercial Buildings: Power distribution panels, HVAC systems, and switchgear.
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Industrial Facilities: Machinery, control systems, and outdoor equipment.
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Harsh Environments: Cold climates, wet locations, and areas requiring NEC compliance.
Compliance & Certifications
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ASTM Standards: B-1 (solid copper), B-3 (stranded copper), B-8 (conductor properties).
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NEC & NFPA 70: Compliant with electrical safety codes for installation.
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CALTRANS: Approved for use in California transportation projects.
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Quality Assurance: Spark-tested at 7500 VAC to detect insulation defects.
Engineering Selection Guide
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Cold Climates: Prioritize for outdoor or unheated spaces due to -25°C cold resistance.
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Wet Locations: Use in conduits, underground raceways, or damp environments (THW rating).
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Flexibility Needs: Choose stranded conductors for tight bends and complex routing.
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Code Compliance: Verify NEC and local regulations for residential/commercial projects.