10/3 Stranded Copper MC Cable W/ Ground

10/3 Stranded Copper MC Cable W/ Ground is a heavy-duty 600V Metal-Clad (MC) building wire engineered for 240V equipment, 3-phase circuits, commercial rooftop HVAC units, and shared-neutral 30A branch circuits in commercial, industrial, institutional, and multi-residential applications. Constructed with three flexible 10 AWG Class B stranded bare copper conductors, an insulated 10 AWG green ground wire, THHN/THWN-2 insulation, protective binder tape, and an overall aluminum interlocked armor, it delivers exceptional crush resistance while eliminating the high labor costs of pulling wire through conduit.

Key Features & Benefits

• Labor-Saving Metal-Clad Design: Pre-armored assembly eliminates the time-consuming process of pulling individual conductors through conduit, lowering jobsite labor costs and accelerating project timelines.

• 30A Multi-Wire & 240V Power Capability: Three 10 AWG copper conductors enable 240V equipment wiring with dedicated neutral, 3-phase 3-wire runs, or multi-wire 30A branch circuits.

• High-Flex Stranded Copper: Built with Class B stranded bare copper conductors to provide superior flexibility, easier pulls, and smooth terminations inside junction boxes and panel boards.

• Dual-Rated THHN/THWN-2 Insulation: High-dielectric PVC insulation with a clear nylon outer skin provides superior heat, flame, moisture, and gasoline/oil resistance rated for 90°C dry applications.

• Lightweight Aluminum Interlocked Armor: Tough interlocked aluminum armor (AIA) shields internal conductors from physical damage, crushing, and abrasion while maintaining maximum bendability.

• Integrated Green Ground Conductor: Includes a dedicated 10 AWG green THHN/THWN-2 insulated stranded copper ground conductor for complete circuit safety.

Technical Specifications

Engineering Overview 

• Application: Multi-wire branch, feeder, and distribution circuits in commercial, industrial, institutional, and multi-residential power, lighting, control, and signal systems.

• Voltage Rating: 600 Volts.

• Ampacity: 40 Amps @ 90°C (Based on 30°C ambient temperature per NEC Table 310.16; refer to NEC 240.4(D) for overcurrent protection limits).

• Conductor Material: Class B stranded soft-drawn bare copper (3 conductors, 10 AWG).

• Insulation: PVC (0.020" thickness) with clear Nylon jacket (0.004" thickness) (THHN/THWN-2).

• Grounding Conductor: One 10 AWG green THHN/THWN-2 insulated stranded copper conductor.

• Phase Identification: White, Black, Red phase conductors (120V/208V system color code).

• Armor: Overall lightweight aluminum interlocked armor.

• Diameter over Armor: 0.63 inches (16.00 mm).

• Approximate Net Weight: 220 lbs / 1,000 ft.

• Temperature Rating: -40°C to +90°C Dry.

• Approvals & Compliance: UL Listed (UL 83, UL 1569, UL 1581), IEEE 1202 Vertical Tray Flame Test (70,000 BTU/hr), ASTM B3 & B8, Federal Spec A-A-59544, NEC Articles 230.43, 300.22, 330, 518.4, 520.5, 530, 545.4, 645. Hazardous Locations: Class I Div. 2, Class II Div. 2, Class III Div. 1 & 2.

** All values are nominal and subject to correction 

• Commercial HVAC & Equipment Motors: Powers 208V/240V commercial rooftop HVAC units, industrial air compressors, electric water heaters, and heavy machinery loads.
• Multi-Wire Branch Circuits (MWBC): Run two independent 30A circuits with a shared neutral in a single armor bundle back to commercial distribution subpanels.
• Exposed & Concealed Wiring: Approved for exposed runs mounted to building structural members or concealed runs installed above dropped ceilings and inside drywall stud cavities.
• Places of Assembly: Fully compliant with NEC rules for places of assembly accommodating 100 or more people, including auditoriums, theaters, studios, and commercial facilities.
• Environmental Air Spaces (Plenums): Safe for installation in environmental air-handling spaces and plenums per NEC Article 300.22.
• Approved Cable Trays & Raceways: Ideal for distribution routing in approved industrial cable trays, open ladder racks, and wireways without requiring rigid metal conduit.

Real-world application examples are provided for educational and general planning purposes only. Project requirements vary based on system design, environmental factors, and local codes. Buyers and specifiers are responsible for verifying that all materials meet exact job specifications and comply with NEC and local electrical regulations. Always consult with a licensed electrician prior to installation.

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.