UL 719 NM-B Cables | NEC/EN Certified Low-Voltage Wiring for Smart Homes & Buildings
Product Overview
UL 719 NM-B cables are lightweight, flexible, and code-compliant non-metallic sheathed cables designed for dry indoor low-voltage power distribution (up to 600V). Certified to NEC 334 (North America) and EN 50575 (EU), they provide a cost-effective solution for modern smart homes, IoT control panels, and multi-family buildings.
Key Specifications
| Parameter | Details |
|---|---|
| Voltage Rating | 600V AC/DC (NEC 334) 300/500V IEC (EN 50575 for EU) |
| Conductor | Option 1: Bare Copper (12-14 AWG) Option 2: Aluminum (SER series) |
| Insulation | Flame-retardant PVC (FT1-rated) |
| Temperature Range | -40°C to 90°C (IEC 60811-1-4 cold bend tested) |
| Certifications | UL 719, NEC 334, EN 50575 Euroclass D-s2,d0, GCC (Middle East) |
Core Applications
Residential & Smart Homes
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15-20A Circuits: 14/2 & 12/2 NM-B for lighting/outlets (NEC 210.11), compatible with Zigbee/Z-Wave hubs.
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High-Load Areas: 10/3 NM-B for 120/240V split-phase circuits (kitchens, laundry rooms).
Commercial & Smart Buildings
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KNX/BACnet Systems: 6/4 NM-B for low-voltage HVAC controls (≤3% voltage drop @ 50m).
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IoT Integration: Embedded wiring for smart lighting, security panels, and energy management.
Compliance & Safety
Fire Performance
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Flame Resistance: Self-extinguishes within 5 seconds (UL 719 vertical flame test).
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Low Smoke Emission: ≤200% smoke density (EN 50575 Euroclass D-s2,d0).
Environmental Durability
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UV Resistance: Optional sunlight-resistant jacket (UL 4703) for attics/garages.
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Cold Flexibility: Passes IEC 60811-1-4 bending tests at -40°C.
Comparative Analysis
NM-B vs. UF-B vs. THHN
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NM-B:
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Dry indoor use (walls, ceilings)
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No conduit required (NEC 334)
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Smart home/IoT-ready
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UF-B:
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Wet/direct burial (UL 493)
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Gardens/subterranean runs
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THHN:
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Industrial conduit installations (UL 83)
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Higher ampacity for machinery
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Installation Guidelines
Approved Uses
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Exposed/concealed wiring in dry locations.
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Embedded in plaster or thermal insulation.
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Smart home control panels (≤90°C).
Prohibited Uses
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❌ Direct burial (use UF-B instead).
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❌ Corrosive environments (chemical plants).
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❌ Wet locations (unless UF-B variant).
Ampacity Ratings
| Conductor | 60°C Rating | 90°C Rating (XHHW) |
|---|---|---|
| 14 AWG | 15A | 25A |
| 12 AWG | 20A | 30A |
Ordering Information
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Conductor: Copper (12-14 AWG) / Aluminum (SER).
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Configuration: 2-4 conductors.
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Certifications: UL 719 (NA), EN 50575 (EU), GCC (Middle East).
Custom lengths & bulk discounts available for contractors.
FAQ
Q: Can NM-B cables be used outdoors or in conduit?
A: No. They are rated for dry indoor locations only. For outdoor use, choose UF-B.
Q: Are these compatible with EU smart home systems?
A: Yes. EN 50575-certified variants support KNX/BACnet protocols.
Q: What’s the advantage of XHHW insulation?
A: XHHW allows higher ampacity (up to 90°C) for energy-efficient smart buildings.