4/3 MC Cable – Compact 3-Conductor Metal Clad Cable for 3-Phase and High-Power Wiring
4/3 MC Cable is built with three 4 AWG copper conductors and a ground wire, enclosed in interlocked aluminum armor. This type of metal clad cable is ideal for delivering high amperage to 3-phase systems, subpanels, and large HVAC units in commercial and industrial environments.
Common Applications for 4/3 MC Cable
- 3-phase power distribution (208Y/120V or 240V)
- Industrial motor wiring
- Large subpanel feeders
- Commercial kitchen equipment
- Heavy-duty HVAC systems
Benefits of 4/3 MC Cable
- High Ampacity: 4 AWG conductors support up to 85 amps depending on installation
- Three Conductors + Ground: Ideal for 3-phase circuits or balanced power distribution
- Flexible Installation: Conduit-free setup in dry areas speeds up wiring
- Durable Armor: Protects conductors during and after installation
- Code Compliant: Meets UL and NEC requirements for metal clad cable
Frequently Asked Questions
Q: What is the ampacity of 4/3 MC Cable?
A: Around 85 amps in dry locations, depending on temperature and derating. Confirm with NEC tables.
Q: Can 4/3 MC Cable be buried or used outdoors?
A: Not directly. Use a PVC jacketed version or MC-HL for wet or underground applications.
Q: Is 4/3 MC Cable the same as 4 AWG 3-conductor cable?
A: Yes, it includes three 4 AWG conductors plus a ground, all in a metal armor for durability.
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