Copperweld® MC Cable

Copper-Clad Aluminum (CCA) metal-clad (MC) cable for commercial construction

Built for today’s commercial construction demands

Copperweld® Metal-Clad Cable helps teams manage cost, improve installation workflow, and deliver efficient electrical performance across modern commercial builds.

From multi-tenant office spaces to large-scale mixed-use developments, today’s construction projects must balance evolving electrical demands, tight schedules, and disciplined budget control. Copperweld® Metal-Clad Cable is designed to support these priorities with a lightweight, flexible armored construction that improves handling and installation workflow across long runs and complex layouts. Its bimetallic construction helps reduce exposure to copper price volatility, minimize theft-related disruptions, and deliver efficient electrical performance when sized per NEC requirements.

Features and Benefits:

Cost Stability – Copperweld’s bimetallic construction helps reduce exposure to copper price volatility, supporting more predictable project budgeting.
Efficient Electrical Performance – When sized per NEC requirements, Copperweld CCA provides lower resistance and improved efficiency compared to equivalently rated alternatives.
Improved Installation Workflow – Lightweight construction and flexible design make handling, routing, and pulling cable easier across complex layouts and long runs.
Reduced Theft Incentives – The lower scrap value of Copperweld CCA building wire helps reduce theft incentives compared to solid copper conductors, helping limit installation delays on active job sites.
Familiar Installation Practices – Installs and terminates similarly to traditional building wire, supporting fast adoption without changes to standard methods.
Code-Listed Construction – UL listed and compliant with applicable NEC requirements for use in a wide range of Metal-Clad cable applications.

Engineering Specifications

CCA Size (AWG)No. of StrandsGround Wire SizeArmor TypeInsulation Thickness (in)
Overall
Diameter
Approx. WeightCCA Allowable Amerage*
PVCNyloninlb/1000 ft75° C90° C
12/2-GSolid12Aluminum0.0150.0040.462832025
12/3-GSolid12Aluminum0.0150.0040.4941002025
12/4-GSolid12Aluminum0.0150.0040.5291152025
10/2-GSolid10Aluminum0.0200.0040.5221033035
10/3-GSolid10Aluminum0.0200.0040.5621253035
10/4-GSolid10Aluminum0.0200.0040.6161433035
8/2-G78Aluminum0.0300.0050.6821624045
8/3-G78Aluminum0.0300.0050.7201984045
6/2-G78Aluminum0.0300.0050.7422135055
6/3-G78Aluminum0.0300.0050.7912655055
4/2-G76Aluminum0.0400.0060.6842886575
4/3-G76Aluminum0.0400.0060.9523686575
*
Ampacity of conductors are based on the Copper-Clad Aluminum columns of NFPA 70 (NEC) Table 310.16. See sections 110.14 and 240.4(D) for specific sizing limitations based upon electrical connection temperature ratings and circuit-size over-current protection values.

Ordering Information

CCA Size (AWG)Conductor Color  Sequence*Standard Packaging**Part Number***
12/2-GBK, WT, GR (G)250’, 1000’ and 2500’12/2MCA-1/1-CCA-A-[Ft]-[Pkg]
12/3-GBK, WT, RD, GR (G)250’, 1000’ and 2500’12/3MCA-1/1-CCA-A-[Ft]-[Pkg]
12/4-GBK, WT, RD, BL, GR (G)250’, 1000’ and 2500’12/4MCA-1/1-CCA-A-[Ft]-[Pkg]
10/2-GBK, WT, GR (G)250’, 1000’ and 2500’10/2MCA-1/1-CCA-A-[Ft]-[Pkg]
10/3-GBK, WT, RD, GR (G)250’, 1000’ and 2500’10/3MCA-1/1-CCA-A-[Ft]-[Pkg]
10/4-GBK, WT, RD, BL, GR (G)250’ or 1000’10/4MCA-1/1-CCA-A-[Ft]-[Pkg]
8/2-GBK, WT, GR (G)250’, 1000’ and 2500’8/2MCA-1/1-CCA-A-[Ft]-[Pkg]
8/3-GBK, WT, RD, GR (G)250’, 1000’ and 2500’8/3MCA-1/1-CCA-A-[Ft]-[Pkg]
6/2-GBK, WT, GR (G)250’, 1000’ and 2500’6/2MCA-1/1-CCA-A-[Ft]-[Pkg]
6/3-GBK, WT, RD, GR (G)250’, 1000’ and 2500’6/3MCA-1/1-CCA-A-[Ft]-[Pkg]
4/2-GBK, WT, GR (G)250’, 1000’ and 2500’4/2MCA-1/1-CCA-A-[Ft]-[Pkg]
4/2-GBK, WT, RD, GR (G)250’, 1000’ and 2500’4/3MCA-1/1-CCA-A-[Ft]-[Pkg]
*
Insulation colors: Black (BK), White (WT), Red (RD), Blue (BL), Green (GR) unless otherwise noted. Other color combinations are available on request, including standard 480V colors.
**
Other packaging and denomination options are available on request.  
***
Part Number Legend: [Size/# of Circuit Cond.][Type]-[# of Strands Circuit Cond. / Ground Cond.]-CCA-A-[Length in Feet]-[Packaging]
Standard Packaging [Pkg]: Hand Coils [C], Plastic Spools or Wooden Reels [RL]

Construction

  • Conductors – Sizes 12-10 AWG: solid, annealed THHN/THWN-2 Copper-Clad Aluminum (CCA); Sizes 8 AWG and larger: stranded, annealed THHN/THWN-2 CCA; Grounding conductors; solid or stranded, annealed THHN/THWN-2 CCA defined by circuit conductor sizing
  • Conductor Insulation – Color-coded Polyvinyl Chloride (PVC) compound meeting the required thickness of Type THHN/THWN-2 with a heat-stabilized nylon jacket rated for 90°C in dry locations
  • Metal-Clad Armor – Lightweight aluminum interlocking armor

Identification and Applications

  • Identification: Copperweld® MC cable is identified for use with wiring devices, splice connectors and equipment terminals rated for CC, Cu, Cu/Al and CO/ALR. Copperweld® Copper-Clad Aluminum is not dissimilar metallurgically to copper, brass or zinc-plated steel. If splicing with twist-on splice connectors, pre-twisting is not required. Copperweld® MC Cable is made with ASTM B-566 Copper-Clad Aluminum bare wire, which carries its own component listing, DVVV2, and is an NEC requirement.
  • Applications: Refer to Article 330 of the NEC.

Standards

  • UL 83
  • UL 1569
  • UL 1581
  • UL 2556
  • NFPA 70 (NEC®)
  • ASTM B566

Listings & Compliance

  • UL: E510284, E523379, E538020
  • ETL: 5021266

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