
Product Overview
Type NM-B Cable is a versatile, NEC 334-compliant solution for residential and commercial wiring. Rated for 600V in dry locations, it features color-coded PVC insulation with a nylon jacket (90°C rating) and integrates grounding conductors. Ideal for concealed installations in walls, ceilings, and masonry block structures where moisture exposure is minimal.
Key Features & Benefits
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NEC Compliance: Meets Article 334 for exposed/concealed dry-location installations
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Temperature Rating: 90°C (dry) with ampacity derated to 60°C per NEC
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Efficient Grounding: Integrated copper grounding conductor (ASTM B3/B8)
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Easy Identification: Color-coded jackets by gauge (white=14 AWG, yellow=12 AWG, etc.)
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Standards Certified: UL 83, UL 719, ASTM B3/B8, ARRA 2009 "Buy American"
Construction Details
Component | Specification |
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Conductors | Solid copper (14-10 AWG) / Stranded copper (8+ AWG) per ASTM B3/B8 |
Insulation | Color-coded PVC + heat-stabilized nylon jacket (THHN-type) |
Grounding Conductor | Soft uncoated copper (sized per configuration) |
Overall Jacket | 30-mil PVC • Color-coded by gauge per NEC guidelines |
Technical Specifications
Cable Type | Conductor Type | Ground Size (AWG) | PVC Insul. (in) | Nylon Jacket (in) | Ampacity* | OD (in) | Weight (lbs/1k ft) |
---|---|---|---|---|---|---|---|
14/2 G | Solid | 14 | 0.015 | 0.004 | 15 | 0.170×0.390 | 56 |
12/2 G | Solid | 12 | 0.015 | 0.004 | 20 | 0.160×0.450 | 82 |
10/3 G | Solid | 10 | 0.020 | 0.004 | 30 | 0.430 | 165 |
8/2 G | 7-strand | 10 | 0.030 | 0.005 | 40 | 0.290×0.580 | 185 |
6/3 G | 7-strand | 10 | 0.030 | 0.005 | 55 | 0.612 | 352 |
2/3 G | 7-strand | 8 | 0.040 | 0.006 | 95 | 0.945 | 841 |
*Ampacity limited to 60°C conductor rating per NEC 334.80
Product Advantages
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Conduit Elimination:
Reduces material/labor costs in dry indoor installations per NEC 334.10(A). -
Integrated Grounding System:
Pre-installed copper ground wire ensures NEC 250.118 compliance and accelerates installation. -
Code-Compliant Safety:
Dual-layer PVC+nylon exceeds UL 83/719 standards for fire/abrasion resistance. -
Optimized Installation:
Color-coded jackets (per gauge) and flat oval design simplify identification and routing.
Compliance & Standards
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Safety: UL 83 (THHN), UL 719 (NM Cable)
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Conductors: ASTM B3 (solid), ASTM B8 (stranded)
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Federal: A-A-59544
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Environmental: ARRA 2009 "Buy American"
Applications
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Residential Wiring: Switches, outlets, lighting circuits
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Concealed Installations: Inside drywall, masonry block/tile walls (non-moisture exposed)
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Commercial Spaces: Office partitions, drop ceilings
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Retrofit Work: Fished through air voids and joints
Prohibited: Wet locations, direct burial, exposed outdoor use
Ordering Information
Specify:
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Cable Type (e.g.,
10/3 G
= 10 AWG × 3 conductors + ground) -
Length (standard 250 ft, 500 ft, 1000 ft coils)
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Special Requirements (e.g., ARRA documentation)
Jacket Color Guide:
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14 AWG: White
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12 AWG: Yellow
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10 AWG: Orange
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8/6 AWG: Black