6/2 NM-B Copper Building Wire with Ground, 600V (Black Jacket)

A versatile staple for residential power, this 6 AWG NM-B Copper Building Wire is specifically engineered for high-demand interior branch circuits. Featuring two high-conductivity copper conductors and a dedicated bare grounding wire, this assembly provides a reliable, high-performance solution for powering the essential heavy-duty appliances in modern homes.

Why Choose 6/2 NM-B Copper Building Wire?

This 2-conductor (with ground) cable is designed for ease of use in dry-location residential wiring. The Type NM-B construction allows for direct routing through wooden framing members without the added complexity of conduit, while the solid annealed copper ensures minimal voltage drop and superior electrical efficiency for sustained loads.

• High-Purity Copper Conductors: Soft-drawn copper provides maximum electrical throughput and remains flexible for easier termination and routing.

• Streamlined Pulling Geometry: The flat, low-friction PVC jacket is optimized to glide through bored studs and joists, significantly reducing physical strain during the rough-in phase.

• Simplified Grounding Path: Includes a full-sized bare copper grounding conductor to ensure immediate fault protection and total code compliance.

• Advanced Insulation Shielding: Individual conductors are protected with heat-resistant PVC and a smooth nylon outer layer (THHN/THWN-2) to resist nicks and abrasions.

Technical Specifications: 6/2 NM-B Copper

• Conductor Size: 6 AWG

• Number of Conductors: 2 (plus Ground)

• Color Code: Black, White, Bare Ground

• Ampacity: 55 Amps at 60C (NEC Table 310.16)

• Voltage: 600V

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

• Max Temp: 90C (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

• Electric Water Heaters: The standard gauge for dedicated circuits supplying high-capacity residential water heating units.

• Mini-Split HVAC Systems: Ideal for powering external condenser units and indoor air handlers requiring 50A circuits.

• 240V Garage Circuits: Frequently used for heavy-duty power tools, compressors, and welders in home workshops.

• Large Appliance Feeders: A reliable choice for dedicated circuits for high-wattage equipment where a separate neutral is not required.

Technical Note: All values are nominal and subject to industry tolerances and manufacturer corrections. Specifications are subject to change without notice. It is the buyers 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) 60C column for NM-B cable, regardless of the conductor temperature rating.