Type MC Cu-Clad Conductor

The Copperweld^® Metal-Clad (MC) Cable Advantage

Copperweld^® Metal-Clad (MC) Cable is a cost-efficient alternative to pipe and wire systems, especially when installing in commercial buildings and places of large public assembly. Copperweld^® MC Cable offers unsurpassed reliability, provides greater resistance to mechanical damage, permits design flexibility of cable runs, and simplifies cable rerouting for equipment relocation. The cable handles power, lighting, control and signal circuits. It is ideal where space is limited. Size for size, Copperweld^® is three times lighter than standard copper MC Cable.

Product Overview

Cu-Clad Aluminum (CCA) Conductor — Drawn from a copper-clad aluminum rod, with the copper metallurgically bonded to an AA 8000 series aluminum core, where oxygen-free copper forms a minimum of 10 percent of the cross-sectional area of a solid conductor or each strand of a stranded conductor.

Application Standard — UL 1569

Conductors — For wire sizes 12-10, solid annealed THHN Copper-Clad Aluminum with solid Copper Clad Aluminum ground. For 8 AWG sizes and larger, stranded annealed THHN Copper-Clad Aluminum with solid Copper-Clad Aluminum ground.

Conductor Insulation — Type THHN or THWN-2 with a heat-stabilized Nylon jacket rated for 75°C in wet locations and 90°C in dry locations.

Grounding Conductor — For NM-B 12-10 AWG sizes: ground will be 12-10 AWG, solid, annealed conductor. For NM-B 8 AWG sizes and larger: ground will be 8 AWG, solid, annealed.

Metal Clad Jacket — Lightweight steel or aluminum interlocking armor

Theft Deterrent

Metallugically bonded conductor results in lower scrap value, reducing theft.

Energy Efficient

Better energy efficiency than standard residential branch circuit wiring.

Cost Stable

Reduced exposure to commodity fluctuation improves your bottom line.

Identification, Applications and Usage

Copperweld^® Copper-Clad Aluminum Type NM-B (non-metallic sheathed cable) is referenced by Article 334 of the National Electrical Code. OSHA safety listed: UL E492024. ETL listing: 5021266.

Identified for use with Wiring Devices, Splice Connectors and Equipment Terminals Rated for Cu, Cu/Al and CO/ALR. Copperweld^® MC Cable is NRTL listed for safety. It is made with ASTM B-566 Copper-Clad Aluminum bare Copperweld^® wire, which carries its own component listing, RU DVVU2. Per UL Guide Information RTRT and WJQR, Copperweld^® MC Cable can terminate with any wiring device (receptacle or switch) rated copper-only or CO/ALR. Per NRTL Testing, Copperweld^® MC Cable satisfies Article 110.14 Electrical Connections as being SAFE for termination with ALL Copper-Only, Cu/AL or CO/ALR terminal connectors (Push-In, Crimp and Twist-On Types) and equipment. When terminating with twist-on splice connectors, pre-twisting is not recommended. Torque until the wires are tight under the cap and visibly twisted together two times below the cap to ensure safe electrical contact. Do not exceed the number of wires per the manufacturer’s instructions. Do not over-torque or under-torque. When terminating to panel lugs, circuit breaker terminals and wiring devices, torque to 12 to 14 lbf-in. Ensure secure connection while limiting wire deformation. Copperweld^® MC Cable may be pigtailed to single-metal copper wire in dry or wet locations with terminals and connectors specified for such use. Copperweld^® MC Cable should not be terminated with single-metal Aluminum wire without the application of an oxide inhibitor or a terminal or connector specifically listed for such use. Copperweld^® ASTM B-566 Copper-Clad Aluminum wire is not dissimilar to copper, brass or zinc plated steel.

Commercial buildings, large places of public assembly (auditoriums, churches, museums, gymnasiums, conference rooms, restaurants, etc.), industrial manufacturing and processing plants
Secondary feeders in industrial and commercial distribution systems; supplying electricity to station auxiliaries in power stations
May be used exposed or concealed, in approved raceways or as open run
UL listed and labeled (Standard 1569)
Conforms to Article 330 of NEC approved wiring method
Cable tray rated, 600 Volt, 90°C rated
Handles branch, feeder and service circuits (Articles 230-243)
For use in theaters (Article 520), motion picture and TV studios (Article 530), and assembly spaces with over 100 people (Article 518)
For use in Class I, Div. 2, Class II, Div. 2 and Class III, Div. 1 hazardous locations