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Solid THHN/THWN-2 WireFrom $0.20/ft -
Solid THHN/THWN-2 WireFrom $0.20/ft - Solid THHN/THWN-2 WireFrom $0.20/ft
- Solid THHN/THWN-2 WireFrom $0.20/ft
Parent SKU : MCA4-3
SKU : MCA4-3-250
"The commercial and industrial standard for high-capacity sub-panel feeders and heavy-duty HVAC distribution. Featuring three fully insulated, compact-stranded aluminum conductors enclosed in a rugged interlocking aluminum armor jacket, this assembly serves as its own pre-armored raceway—eliminating the time-consuming process of bending and installing separate conduit pipes for a fast, code-compliant installation."
In commercial and residential construction, minimizing labor hours is the key to maintaining project profitability. The 4/3 Aluminum Metal Clad (MC) Cable delivers a completely code-compliant, pre-armored wiring system that can be uncoiled and installed in up to half the time of standard pipe-and-wire runs. Built with premium AA-8000 series aluminum alloy, it features three color-coded XHHW-2 insulated phase conductors and a dedicated bare grounding wire wrapped snugly in a rugged interlocking aluminum armor.
Labor-Saving Armor: Overall aluminum interlocked armor functions as an integrated protective raceway, removing the labor and material expenses of bending and installing separate conduit systems.
Premium AA-8000 Conductor: Manufactured with compact-stranded 8000-series aluminum alloy for high electrical conductivity, low weight, and effortless flexibility during pull runs.
XHHW-2 Triple Insulation: Individual phase conductors are insulated with cross-linked polyethylene (XLPE), providing superior resistance to heat, moisture, and electrical stress in wet or dry locations.
Maximum Versatility: Code-approved for an exceptionally broad range of installations including commercial branch circuits, HVAC units, equipment feeders, and environmental air-handling spaces (plenums).
Conductor Configuration: 3 Insulated Conductors + 1 Bare Ground Wire
Conductor Size: 4 AWG
Conductor Material: AA-8000 Series Compact Stranded Aluminum Alloy (per ASTM B800 & B801)
Conductor Colors: Black, White & Red
Ground Wire Size: 6 AWG (Bare Conductor)
Insulation: High-Heat & Moisture Resistant Cross-Linked Polyethylene (XLPE / Type XHHW-2). A binder tape is wrapped over the insulated conductors' assembly.
Armor: Overall aluminum interlocked armor.
Voltage Rating: 600 Volts.
Temperature Rating: -40°C to 90°C.
Amp Rating (@ 75°C): 65 Amps.
Amp Rating (@ 90°C): 75 Amps.
Outside Diameter (OD): 1.01 inches
Insulation Thickness: 0.045 inches
Net Weight: 335 lbs/mft (pounds per 1,000 feet)
Minimum Bending Radius: 7.07 inches
UL Listed: UL 1569 (Metal-Clad Cables) & UL 44 (Thermoset-Insulated Wires)
Cable Tray Use: Listed and approved for CT Use
Industry Standards: NEMA WC-70 / ICEA S-95-658 | ASTM B800 & B801
Flame Testing: Passes IEEE 1202 (70,000 BTU/HR Vertical Tray Flame Test)
NEC Air-Handling Compliance: Approved for environmental air spaces per NEC 300.22
NEC Special Occupancies: Approved for Places of Public Assembly (NEC 518.4), Theaters (NEC 520.5), and IT Equipment Rooms (NEC 645.5)
Commercial Branch Circuits: Actively used for power, lighting, control, and signal circuits throughout retail, industrial, and multi-residential structures.
65-Amp Sub-Panel Feeders: Ideal for feeding 65A interior distribution sub-panels in detached spaces, home workshops, additions, or commercial offices.
Diverse Environmental Routing: Fully approved for installation inside commercial cable trays, approved raceways, concealed or exposed locations, environmental air-handling spaces (plenums), and vertical structural risers.
Hazardous Location Environments: Permitted for use in specialized industrial environments as defined and regulated by NEC Articles 501, 502, 503, and 504.
Heavy Electric Appliances: The industry standard for routing dedicated single-phase lines to commercial HVAC condensers, subpanels, large heat pumps, and multi-family infrastructure.
Technical Note: All values are nominal and subject to industry tolerances and manufacturer corrections. Specifications are subject to change without notice. It is the buyer’s responsibility to verify that all materials meet the specific requirements of the project and comply with local electrical codes. Reference NEC Article 330 for specific Metal-Clad installation guidelines.
Ampacity: Ampacities are based on NEC Table 310.15 (B)(16) (or equivalent local reference tables) and show the allowable ampacities of current-carrying insulated conductors in a raceway, cable, or earth based on an ambient temperature of 30°C (86°F). Because most standard commercial electrical panels, breakers, and terminal lugs feature 75°C termination points, circuits should be designed based on the conservative 65-Amp standard. The 75-Amp rating at 90°C is typically utilized for ampacity adjustment and correction factors.
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| Wire Size (AWG/MCM) | 4 AWG |
| Conductor Material | Aluminum |
| Conductor Type | Stranded |
| Outer Diameter (OD) (in/mm) | 1.01 in. |
| Conductor Count | 3 |
| Shield | Unshielded |
| Insulation Type | (XLPE) Cross-Linked Polyethylene |
| Voltage Rating | 600V |
| Ampacity Rating | 75 |
| Submersible | No |
| Temperature Rating | 90ºC |
| Standards | UL 44, 83, 1569 for Type MC Cable for CT Use NEMA WC-70/ICEA S-95-658 IEEEE 1202 70, 000 BTU/HR Vertical Tray Flame Test ASTM B800 & B801 NEC 518.4, NEC 520.5, NEC 645.5, and NEC 300.22 for environmental air-handling spaces. |
| Miscellaneous Information | All values are nominal and subject to correction. **Ampacities are based on NEC Table 310.15(B)(16), and show the allowable Ampacities of three current carrying insulated conductors, in a raceway, cable, or earth based on ambeient temperature of 30°C (86°F). |
| Primary Applications | Service entrance conductors, Feeders, Branch circuits, Power, lighting, control, and signal circuits |
| Common Uses |
|
| Weight per Foot | 0.335 lb |
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 shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).
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.
Parent SKU : MCA4-3
SKU : MCA4-3-250
Parent SKU : MCA4-3
SKU : MCA4-3-250
"The commercial and industrial standard for high-capacity sub-panel feeders and heavy-duty HVAC distribution. Featuring three fully insulated, compact-stranded aluminum conductors enclosed in a rugged interlocking aluminum armor jacket, this assembly serves as its own pre-armored raceway—eliminating the time-consuming process of bending and installing separate conduit pipes for a fast, code-compliant installation."
In commercial and residential construction, minimizing labor hours is the key to maintaining project profitability. The 4/3 Aluminum Metal Clad (MC) Cable delivers a completely code-compliant, pre-armored wiring system that can be uncoiled and installed in up to half the time of standard pipe-and-wire runs. Built with premium AA-8000 series aluminum alloy, it features three color-coded XHHW-2 insulated phase conductors and a dedicated bare grounding wire wrapped snugly in a rugged interlocking aluminum armor.
Labor-Saving Armor: Overall aluminum interlocked armor functions as an integrated protective raceway, removing the labor and material expenses of bending and installing separate conduit systems.
Premium AA-8000 Conductor: Manufactured with compact-stranded 8000-series aluminum alloy for high electrical conductivity, low weight, and effortless flexibility during pull runs.
XHHW-2 Triple Insulation: Individual phase conductors are insulated with cross-linked polyethylene (XLPE), providing superior resistance to heat, moisture, and electrical stress in wet or dry locations.
Maximum Versatility: Code-approved for an exceptionally broad range of installations including commercial branch circuits, HVAC units, equipment feeders, and environmental air-handling spaces (plenums).
Conductor Configuration: 3 Insulated Conductors + 1 Bare Ground Wire
Conductor Size: 4 AWG
Conductor Material: AA-8000 Series Compact Stranded Aluminum Alloy (per ASTM B800 & B801)
Conductor Colors: Black, White & Red
Ground Wire Size: 6 AWG (Bare Conductor)
Insulation: High-Heat & Moisture Resistant Cross-Linked Polyethylene (XLPE / Type XHHW-2). A binder tape is wrapped over the insulated conductors' assembly.
Armor: Overall aluminum interlocked armor.
Voltage Rating: 600 Volts.
Temperature Rating: -40°C to 90°C.
Amp Rating (@ 75°C): 65 Amps.
Amp Rating (@ 90°C): 75 Amps.
Outside Diameter (OD): 1.01 inches
Insulation Thickness: 0.045 inches
Net Weight: 335 lbs/mft (pounds per 1,000 feet)
Minimum Bending Radius: 7.07 inches
UL Listed: UL 1569 (Metal-Clad Cables) & UL 44 (Thermoset-Insulated Wires)
Cable Tray Use: Listed and approved for CT Use
Industry Standards: NEMA WC-70 / ICEA S-95-658 | ASTM B800 & B801
Flame Testing: Passes IEEE 1202 (70,000 BTU/HR Vertical Tray Flame Test)
NEC Air-Handling Compliance: Approved for environmental air spaces per NEC 300.22
NEC Special Occupancies: Approved for Places of Public Assembly (NEC 518.4), Theaters (NEC 520.5), and IT Equipment Rooms (NEC 645.5)
Commercial Branch Circuits: Actively used for power, lighting, control, and signal circuits throughout retail, industrial, and multi-residential structures.
65-Amp Sub-Panel Feeders: Ideal for feeding 65A interior distribution sub-panels in detached spaces, home workshops, additions, or commercial offices.
Diverse Environmental Routing: Fully approved for installation inside commercial cable trays, approved raceways, concealed or exposed locations, environmental air-handling spaces (plenums), and vertical structural risers.
Hazardous Location Environments: Permitted for use in specialized industrial environments as defined and regulated by NEC Articles 501, 502, 503, and 504.
Heavy Electric Appliances: The industry standard for routing dedicated single-phase lines to commercial HVAC condensers, subpanels, large heat pumps, and multi-family infrastructure.
Technical Note: All values are nominal and subject to industry tolerances and manufacturer corrections. Specifications are subject to change without notice. It is the buyer’s responsibility to verify that all materials meet the specific requirements of the project and comply with local electrical codes. Reference NEC Article 330 for specific Metal-Clad installation guidelines.
Ampacity: Ampacities are based on NEC Table 310.15 (B)(16) (or equivalent local reference tables) and show the allowable ampacities of current-carrying insulated conductors in a raceway, cable, or earth based on an ambient temperature of 30°C (86°F). Because most standard commercial electrical panels, breakers, and terminal lugs feature 75°C termination points, circuits should be designed based on the conservative 65-Amp standard. The 75-Amp rating at 90°C is typically utilized for ampacity adjustment and correction factors.
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| Wire Size (AWG/MCM) | 4 AWG |
| Conductor Material | Aluminum |
| Conductor Type | Stranded |
| Outer Diameter (OD) (in/mm) | 1.01 in. |
| Conductor Count | 3 |
| Shield | Unshielded |
| Insulation Type | (XLPE) Cross-Linked Polyethylene |
| Voltage Rating | 600V |
| Ampacity Rating | 75 |
| Submersible | No |
| Temperature Rating | 90ºC |
| Standards | UL 44, 83, 1569 for Type MC Cable for CT Use NEMA WC-70/ICEA S-95-658 IEEEE 1202 70, 000 BTU/HR Vertical Tray Flame Test ASTM B800 & B801 NEC 518.4, NEC 520.5, NEC 645.5, and NEC 300.22 for environmental air-handling spaces. |
| Miscellaneous Information | All values are nominal and subject to correction. **Ampacities are based on NEC Table 310.15(B)(16), and show the allowable Ampacities of three current carrying insulated conductors, in a raceway, cable, or earth based on ambeient temperature of 30°C (86°F). |
| Primary Applications | Service entrance conductors, Feeders, Branch circuits, Power, lighting, control, and signal circuits |
| Common Uses |
|
| Weight per Foot | 0.335 lb |
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 shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).
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.
Get notified when this product is back in stock
Physical Specifications
Technical Specifications
Usage & Installation:
Packaging & Dimensions:
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4/3 Aluminum MC (Metal Clad) Cable is primarily used for commercial, industrial, and residential feeder networks and high-capacity branch circuits. Thanks to its built-in interlocking aluminum armor, it requires no separate conduit pipe and can be pulled directly through framing studs. It is most commonly specified for feeding interior 60-Amp sub-panels, powering large commercial HVAC or refrigeration equipment, and wiring heavy mechanical machinery.
No. Standard 4/3 Aluminum MC cable with open, interlocked metal armor is engineered strictly for dry, indoor, concealed, or exposed installations. It cannot be buried directly in soil or embedded in concrete without a protective, fluid-tight PVC outer jacket (often designated as "Direct Burial MC" or "PVC-Jacketed MC"). For underground runs, you must use an approved underground feeder cable (like MHF or URD) or run standalone conductors through a buried conduit system.
The primary differences come down to weight, cost, and ampacity. Copper is a more efficient conductor, meaning 4/3 Copper MC is rated for 85 Amps (75°C) and can handle an 85A or 90A breaker, whereas 4/3 Aluminum MC is limited to a 65A/70A breaker profile. However, 4/3 Aluminum MC is dramatically cheaper and lighter, making it the clear economic choice for long feeder runs where a 60A to 70A capacity perfectly satisfies the electrical load.
The allowable ampacity of 4/3 Aluminum MC Cable is 65 Amps @ 75°C and 75 Amps @ 90°C .
*Ampacities are based on NEC Table 310.15(B)(16), and show the allowable Ampacities of three current carrying insulated conductors, in a raceway, cable, or earth based on ambeient temperature of 30°C (86°F).
4/3 Aluminum MC Cable has an approximate physical net weight of 335 lbs per 1,000 feet (lbs/mft). The nominal outside diameter over the external interlocking aluminum armor is 1.01 inches (+/- 5%). Knowing these dimensions allows installers to ensure they select the appropriate trade-size connector fittings and evaluate structural loading capacities for long cable tray pulls.
Yes, it is highly recommended. While modern AA-8000 series aluminum alloy is incredibly stable, electrical best practice dictates applying an approved anti-oxidant paste (such as Noalox or Penetrox) onto the stripped 4 AWG aluminum ends before securing them into mechanical lugs or breaker terminations. This prevents oxygen from forming a resistive film over the connection point, ensuring a safe, cool termination.
Wire America supplies an extensive inventory of 4/3 Aluminum MC cable cut by the foot or on master reels. We ship directly from our regional hubs located across the United States, delivering most orders right to your shop or job site within 2 to 4 business days. We prioritize shipping MC Cable from the warehouse nearest to your job site to keep transit times minimal. Expedited shipping options are available at checkout for time-sensitive contractor deadlines.
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