8/3 MC Cable – High-Capacity Metal Clad Cable for 120/240V Systems

8/3 MC Cable is a heavy-duty metal clad electrical cable built for 50-amp 120/240V circuits. With three 8 AWG copper conductors and a ground wire encased in interlocked aluminum armor, it’s ideal for powering large appliances and subpanels in residential, commercial, and light industrial environments.

  • 8 3 Mc Cable

8/3 MC Cable


High-Capacity Metal Clad Cable for 120/240V Systems

  • Conductor Size 8 AWG (American Wire Gauge)
  • Construction Three conductors (black, white, red) + one ground
  • Armor Interlocked aluminum armor
  • Voltage Rating 600V
  • Insulation THHN/THWN-2 conductors
  • Standards UL Listed, NEC Articles 310 & 330 compliant
  • Temperature Rating Up to 90°C (dry locations)


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8/3 MC Cable – Heavy-Duty 120/240V Power Cable (100 ft & 250 ft Options)

Looking to buy 8/3 MC Cable in 100 ft or 250 ft lengths? Our high-quality, UL-listed cable is ready to ship and built for demanding 50-amp 120/240V applications. With three 8 AWG conductors and a ground wire inside a rugged aluminum armor, this cable is ideal for electric ranges, subpanel feeders, and EV charger installations.


📦 Available Sizes

  • 100 ft Coil – Ideal for most residential appliance or subpanel runs

  • 250 ft Spool – Suited for contractors or multi-room projects

  • 🛠️ Need a custom cut? Contact us for specific lengths or volume orders


⚙️ Cable Specs

  • Conductors: 3 x 8 AWG (black, white, red) + bare ground

  • Voltage: 600V

  • Ampacity: Up to 50 amps (consult NEC for conditions of use)

  • Armor: Interlocked aluminum, flexible and crush-resistant

  • Rating: Dry location only (for wet locations, use MC-HL or PVC-jacketed MC)


🔌 Typical Applications

  • Electric ranges requiring 120V + 240V

  • Large dryers (with 3-pole plugs and neutral)

  • 50A subpanel feeders

  • Level 2 EV chargers

  • Light commercial HVAC units


Why Choose Our 8/3 MC Cable?

  • Supports 120V/240V Loads: Includes neutral wire for split-phase systems

  • Rugged Armor: Eliminates need for conduit in many builds

  • Time-Saving Installation: Pre-assembled and flexible

  • Code-Compliant: UL listed and NEC approved for branch circuits

  • Ready-to-Ship Lengths: Get 100 ft or 250 ft coils fast


❓ Frequently Asked Questions

Q: What does “8/3” mean?
A: It indicates three 8-gauge conductors (usually black, white, and red) plus a separate ground wire.

Q: Is this suitable for outdoor use?
A: Standard MC cable is for dry indoor use. For outdoor or wet locations, use MC-HL or PVC-jacketed MC cable.

Q: What size breaker is used with 8/3 MC cable?
A: Typically a 50-amp breaker, but always confirm with NEC and local codes based on your specific installation.


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