The 8/3 MC cable is a sturdy, metal-clad option designed for demanding electrical installations. This guide highlights five strong choices, compares their key features, and explains what to look for when selecting MC cables for indoor, outdoor, or underground use. Read on to understand conductor material, armor type, temperature rating, and NEC compliance to choose the right model for commercial, industrial, or residential projects.
Summary of Selected Products
| Product | Length | Conductor Size | Armor | Ground | Voltage | Brand |
|---|---|---|---|---|---|---|
| 8/3 MC Cable with Ground – 50FT | 50 ft | 8 AWG | Aluminum Armor | 10 AWG | 600V | MOOKEERF Store |
| 8/3 MC Cable with Ground – 100FT | 100 ft | 8 AWG | Aluminum Armor | 10 AWG | 600V | MOOKEERF Store |
| 8/3 Metal Clad Cable with Ground 50ft | 50 ft | 8 AWG | Aluminum Armor | 10 AWG | 600V | Kimbluth Store |
| Kanayu 50 FT 8/3 NM-B Electrical Wire | 50 ft | 8 AWG | Not Armor (NM-B) | Grounded | 600V | Kanayu Store |
| 8/3 Metal Clad Cable with Ground 75ft | 75 ft | 8 AWG | Aluminum Armor | 10 AWG | 600V | Kimbluth Store |
8/3 MC Cable With Ground – 50FT (8 AWG)
Brand: MOOKEERF Store. This 8/3 MC cable uses THHN/THWN conductors with black, white, and red insulation and a 10 AWG ground. It is rated for 600V and a dry/wet temperature range up to 90°C / 75°C. The steel interlocked armor provides heavy-duty protection against moisture, corrosion, and physical damage, suitable for harsh environments like factories or large commercial facilities. NEC Article 330 compatibility covers exposed or concealed use in both dry and wet locations.
8/3 MC Cable With Ground – 100FT (8 AWG)
Brand: MOOKEERF Store. This 100-foot variant shares the same core specs: THHN/THWN conductors, black/white/red coloring, 8 AWG conductors with a 10 AWG ground, and a 600V rating. The heavy-duty metal armor shields the conductors from elements and damage. It remains UL-listed and NEC-compliant for versatile applications in HVAC, lighting, and branch circuits across commercial and industrial settings.
8/3 Metal Clad Cable – 50ft, Aluminum Armor
Brand: Kimbluth Store. This 8/3 MC Cable features rugged outdoor durability with aluminum armor, rated for 90°C at insulations, and UL 83, UL 1569, and UL 2556 standards. It uses 8-gauge stranded copper conductors and a 10-gauge solid copper ground for enhanced conductivity and current capacity. The aluminum jacket provides weather resistance for indoor, outdoor, or underground installations.
Kanayu 50 FT 8/3 NM-B Electrical Wire
Brand: Kanayu Store. This NM-B 8/3 cable is rated for indoor residential wiring. It features 50 feet of length, a durable PVC jacket, and a 600V rating with 8/3 configuration. It uses 100% copper conductors for lower heat and power loss, suitable for home wiring, lighting, and appliance connections in residential spaces.
8/3 Metal Clad Cable – 75ft, Aluminum Armor
Brand: Kimbluth Store. This 75-foot MC cable provides rugged outdoor durability with aluminum armor and 90°C insulation ratings. It uses 8-gauge stranded copper conductors and a 10-gauge ground, delivering strong conductivity. The armor enhances protection against environmental factors and physical damage in outdoor, underground, or embedded installations.
Buying Guide: Key Purchase Considerations
Conductor material and gauge: 8 AWG conductors offer higher current capacity, useful for equipment like HVAC, pumps, and large lighting circuits. Copper conductors provide better conductivity and heat performance than aluminum-only options, though some MC cables use aluminum armor for shielding while maintaining copper conductors in the core.
Armor type and durability: Metal-clad cables use steel interlocked armor or aluminum armor to resist moisture, corrosion, and mechanical damage. Aluminum armor often provides better flexibility and weather resistance, while steel armor offers stronger protection in harsh environments.
Insulation and temperature rating: Look for high-temperature ratings (up to 90°C dry and 75°C wet) to ensure safe operation in hot installations. UL-listed insulation and certification (UL 83, UL 1569, UL 2556) indicate compliance with safety standards for specific environments.
Voltage rating and NEC compliance: Common ratings include 600V, with NEC Article 330 guidelines for exposed or concealed use in dry or wet locations. NEC compliance helps ensure correct installation practices in commercial and industrial settings.
Length and flexibility: Longer runs reduce splicing, but heavier armor can impact flexibility. Choose length that minimizes splices while meeting routing constraints for indoor, outdoor, or underground paths.
Application environment: For outdoor or underground applications, aluminum armor can provide robust protection against moisture and UV exposure. For indoor use in controlled spaces, NM-B or MC cables with copper conductors may be appropriate depending on code requirements.