14/3 NM-B Copper Building Wire with Ground, 600V (Blue Jacket)

Specifically designed for specialized residential lighting and 15-amp branch circuits, this 14 AWG NM-B Copper Building Wire with a distinctive Blue Jacket offers a high-visibility solution for modern electrical systems. Featuring two high-conductivity copper conductors and a dedicated bare ground, this cable is engineered for interior dry-location wiring where circuit differentiation and installer efficiency are high priorities.

Why Choose 14/3 NM-B Blue Building Wire?

While 14 AWG is the standard for 15-amp lighting and general-purpose outlets, the Blue Jacket serves as a specialized indicator. Often used by contractors to distinguish specific circuit types—such as dedicated lighting controls, smoke detector interconnections, or Arc-Fault Circuit Interrupter (AFCI) protected lines—from standard white-jacketed 14 AWG runs.

• Distinctive Blue Color Coding: The blue PVC jacket provides immediate visual recognition, helping to organize complex panels and reducing the risk of wiring errors during rough-in and trim-out phases.

• Premium Copper Performance: Annealed (soft) copper conductors provide maximum electrical reliability and flexibility, making terminations in narrow switch boxes much easier.

• Low-Friction Outer Shell: The slick-finish PVC jacket is formulated to glide through bored studs and floor joists, minimizing the physical force required for long pulls.

• Dual-Layer Insulation Durability: Individual conductors are protected by heat-resistant PVC and a slick nylon jacket (THHN/THWN-2), providing superior resistance to the abrasions and nicks common on active job sites.

Technical Specifications: 14/3 NM-B Copper (Blue)

• Conductor Size: 14 AWG

• Number of Conductors: 2 (plus Ground)

• Color Code: Black, White, Bare Ground

• Jacket Color: Blue

• Ampacity: 15 Amps at 60°C (NEC Table 310.16)

• Voltage: 600V

• Insulation: Polyvinyl Chloride (PVC) with Nylon Covering (Type THHN)

• Max Temp: 90°C (Dry locations only)

• Conductor Material: Annealed (Soft) Copper

• Standards: UL Standard 83, UL Standard 719, ASTM B-3, B-8, Federal Spec A-A-59544

Common Applications

• Residential Lighting Circuits: The go-to gauge for overhead lighting, recessed cans, and general-purpose illumination.

• Smoke and Carbon Monoxide Detectors: Frequently utilized for interconnected safety alarm systems to distinguish them from standard power circuits.

• Home Automation Systems: Ideal for wiring smart switches and lighting control hubs where color-coded circuit management is essential.

• General Purpose Outlets: A reliable and efficient choice for bedroom and living area receptacles that do not require 20-amp capacity.

Technical Note: All values are nominal and subject to industry tolerances and manufacturer corrections. Specifications are subject to change without notice. It is the buyer’s responsibility to verify that all materials meet the specific requirements of the project and comply with local electrical codes. NM-B is for dry, indoor use only.

*All values are nominal and subject to correction. Ampacity is based on the National Electrical Code (NEC) 60°C column for NM-B cable, regardless of the conductor temperature rating.

General Shipping Information

In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.

You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.

Expedited Shipping

Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).

Returns

You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.

Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.

Orders on any items with a material value of $50 or less are non-returnable.