TOT Wire & Cable offers a full range of NM-B (Non-Metallic Sheathed) Copper Wire, widely used for residential and commercial indoor wiring. Our NM-B cable is UL listed and compliant with NEC standards, making it a safe, reliable, and economical choice for electrical contractors and builders.
✅ What Is NM-B Wire?
NM-B (Non-Metallic Sheathed Cable, Type B) is a type of electrical cable commonly used for permanent indoor installations in residential and light commercial buildings. It consists of multiple insulated copper conductors and a bare ground wire, all encased in a thermoplastic PVC jacket.
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Voltage Rating: 600V
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Temperature Rating: 90°C dry locations
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Conductor: Soft-annealed bare copper, solid or stranded
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Sheath: Flame-retardant PVC
🔧 Product Features
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✅ UL Listed & RoHS Compliant
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✅ PVC Jacket for durability and easy installation
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✅ Lightweight and easy to pull through framing
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✅ Available in standard colors for phase identification
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✅ Suitable for dry, indoor, non-metallic conduit or cable trays
📦 Common NM-B Wire Sizes Available
| Type | Conductors | Ground | AWG | Application |
|---|---|---|---|---|
| 14/2 NM-B | 2 | Yes | 14 AWG | Lighting circuits |
| 12/2 NM-B | 2 | Yes | 12 AWG | 20A outlets |
| 10/2 NM-B | 2 | Yes | 10 AWG | Water heaters, AC |
| 12/3 NM-B | 3 | Yes | 12 AWG | 3-way switches |
| 10/3 NM-B | 3 | Yes | 10 AWG | Dryer circuits |
| 8/2, 8/3 NM-B | 2/3 | Yes | 8 AWG | Heavy appliances |
| 6/3 NM-B | 3 | Yes | 6 AWG | Electric ranges |
Other custom lengths or packaging (rolls or reels) available upon request.
⚙️ Technical Specifications
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Rated Voltage: 600V
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Conductor Material: Annealed bare copper
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Jacket Material: PVC
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Insulation: Thermoplastic (Type THHN/THWN conductors)
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Operating Temp: -20°C to +90°C (dry locations only)
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Standard: UL 719 / NEC Article 334
🏠 Application Scenarios
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Indoor residential branch wiring
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Lighting, receptacles, and appliances
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Mounted inside wall studs, ceiling joists, or floor joists
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Behind drywall in wood-framed construction
⚠️ Not for use in wet or outdoor locations. For direct burial or wet locations, use UF-B or THWN/THWN-2 cable.
📞 Contact Us for NM-B Wire Pricing
We provide competitive pricing for full reels, pallet quantities, or custom bulk orders of NM-B cable. Whether you're a contractor, wholesaler, or project developer, we can support your needs.
➡️ Contact TOT Wire & Cable now for a quote or technical datasheet.
📈 Why Choose TOT Wire & Cable?
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Factory-direct pricing
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Fast lead times and reliable inventory
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Expert technical support
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Custom packaging and OEM branding available