6/4 MC Cable – High-Capacity Metal Clad Cable for Demanding Power Distribution

6/4 MC Cable features four 6 AWG copper conductors and a ground wire enclosed in a rugged aluminum armor. It is designed for high-power 3-phase and 240V circuits, including heavy-duty HVAC systems, industrial equipment, and large subpanel feeders. Its durable construction eliminates the need for separate conduit in dry locations, offering faster, cleaner installations.

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  • 6 4 Mc Cable

6/4 MC Cable

High-Capacity Metal Clad Cable for Demanding Power Distribution

  • Conductor Size 6 AWG (American Wire Gauge)
  • Construction Four conductors (typically black, red, blue, white) + bare or green ground
  • Armor Interlocked aluminum armor
  • Voltage Rating 600V
  • Insulation THHN/THWN-2 heat- and moisture-resistant insulation
  • Standards UL Listed, NEC Article 330 compliant
  • Temperature Rating 90°C (dry)

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6/4 MC Cable – High-Capacity Metal Clad Cable for Demanding Power Distribution

6/4 MC Cable features four 6 AWG copper conductors and a ground wire enclosed in a rugged aluminum armor. It is designed for high-power 3-phase and 240V circuits, including heavy-duty HVAC systems, industrial equipment, and large subpanel feeders. Its durable construction eliminates the need for separate conduit in dry locations, offering faster, cleaner installations.

Common Applications for 6/4 MC Cable

  • Power supply for 3-phase 208Y/120V or 240V equipment

  • High-capacity commercial and industrial subpanels

  • Heavy-duty HVAC systems and air handlers

  • Multi-circuit distribution in large buildings

  • 240V electric furnaces or ovens with shared neutral

Benefits of 6/4 MC Cable

  • Increased Ampacity: 6 AWG wires support higher current loads (typically 55 amps per conductor)

  • Four Conductors + Ground: Perfect for complex wiring systems or multi-phase loads

  • No Conduit Required: Armor acts as conduit, reducing labor and material costs

  • Rugged & Flexible: Withstands installation stress in commercial environments

  • Fully Compliant: NEC-approved for branch circuits and feeders in dry locations

Frequently Asked Questions

Q: What is the amp rating of 6/4 MC Cable?
A: Generally rated for 55 amps per conductor in dry conditions. Final ampacity depends on installation method and derating factors.

Q: Can I use 6/4 MC Cable outdoors or underground?
A: Not unless it’s jacketed with PVC (MC-HL type). Standard MC Cable is for indoor, dry locations only.

Q: What’s the difference between 6/3 and 6/4 MC Cable?
A: 6/4 includes an additional conductor, making it suitable for 3-phase loads or dual-circuit systems, while 6/3 is used for simpler 240V installations.

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