The industry standard for 30-amp residential circuits, this 10 AWG NM-B Copper Building Wire is purpose-built for mid-range power distribution in modern homes. Engineered with two insulated copper conductors and a dedicated bare ground, this cable is instantly identifiable by its high-visibility orange jacket, ensuring quick circuit identification for both installers and inspectors.

Why Choose 10/3 NM-B Copper Building Wire?

This 2-conductor (plus ground) configuration is a fundamental component of residential wiring, offering the perfect balance between high ampacity and manageable flexibility. The Type NM-B designation allows for rapid deployment through interior wood-frame structures without the need for conduit, significantly reducing labor time on the job site.

• High-Visibility Color Coding: The orange PVC jacket serves as a permanent visual indicator that the circuit is 10 AWG, helping to prevent wiring errors and ensuring code compliance at a glance.

• Superior Copper Integrity: Annealed (soft) copper conductors provide the reliable electrical performance and low resistance necessary for sustained high-wattage loads.

• Friction-Reducing Jacket: The outer PVC sheath is designed with a slick finish to glide through bored holes in studs and joists without snagging or tearing.

• Dual-Layer Protection: Conductors are shielded with heat-resistant PVC and topped with a clear nylon jacket (THHN/THWN-2) for enhanced abrasion resistance during the pull.

Technical Specifications: 10/3 NM-B Copper

• Conductor Size: 10 AWG

• Number of Conductors: 2 (plus Ground)

• Color Code: Black, White, Bare Ground

• Jacket Color: Orange

• Ampacity: 30 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 wiring choice for dedicated 30A residential water heating circuits.

• Clothes Dryers: Ideal for supplying power to 120/240V electric dryer units in laundry rooms.

• Air Conditioning Units: Frequently utilized for window units and small central A/C condensers that require a 30A feed.

• High-Power Kitchen Circuits: A reliable solution for dedicated circuits serving built-in microwaves or high-amperage countertop appliances.

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.