Best 12/2 BX Cable Options for Home Wiring
The following article highlights five solid 12/2 cable options commonly used in residential and light commercial wiring. It compares types like MC Lite, Romex NM-B, UF-B underground feeder, and armored MC cables to help buyers choose the right product for indoor, outdoor, or mixed environments. Each listing includes key features to consider, such as conductor material, jacket type, and installation context.
| Product | Conductor Type | Jacket / Sheath | Typical Use |
|---|---|---|---|
| Southwire 68580055 250 ft 12/2 solid CU MC Lite Cable, Aluminum | 12/2, solid copper | MC Lite; aluminum outer jacket | Indoor/outdoor versatile applications with MC-style protection |
| Southwire Romex Brand Simpull 12/2 NM-B (100 ft) | 12/2, copper | SIMpull insulated Romex jacket | Residential branch circuits; dry, above-ground installation |
| Southwire UF-B Underground Feeder Cable, 12/2 (250 ft) | 12/2, copper | UV-rated nylon jacket | Underground or exposed outdoor runs; moisture resistance |
| 12/2 MC Cable with Ground (Aluminum Armor) – 100 ft | 12/2, bare copper or solid conductors | Aluminum alloy jacket; inner armor | Industrial, outdoor, or rugged environments with armor protection |
| Southwire 68580052 50-Foot 12-Gauge 2-Conductor MC Aluminum | 12/2, copper | MC aluminum jacket | Cable trays and approved raceways; short runs |
style=”display:none;”>Summary: This article reviews five 12/2 cable options suitable for various wiring scenarios, including MC-style shielding, Romex NM-B flexibility, and rugged outdoor armor. The selection covers indoor residential use, outdoor/underground runs, and tray-installed applications, helping readers balance ease of installation with durability.
Southwire 68580055 12/2 Solid CU MC Lite Cable
The 68580055 is a 250-foot spool of 12/2 solid copper conductors housed in an MC Lite aluminum outer jacket. This configuration provides a rugged, shielded option that supports both indoor and outdoor installations where a flexible, durable cable is preferred. It suits equipment connections, subpanel feeders, and environments requiring additional physical protection against abrasion without a heavy armored jacket. The aluminum sheath helps reduce weight while maintaining mechanical protection, making it a practical choice for challenging runs inside conduit or exterior walls.
Southwire Romex Brand Simpull 12/2 NM-B (100 Ft)
Romex NM-B 12/2 Simpull is designed for easy installation in residential buildings. The patented SIMpull jacket reduces resistance when pulling the wire through studs and conduits, simplifying installation and reducing the risk of damage during pulling. This option is widely used for branch circuits powering switches and outlets in dry, above-ground locations. It is a cost-effective choice for interior wall cavities and attic runs where moisture exposure is minimal.
Southwire UF-B Underground Feeder Cable 12/2 (250 ft)
UF-B is rated for underground and outdoor runs, featuring a PVC insulation and a nylon jacket that protects copper conductors from moisture and soil contact. Available with or without a ground wire, this cable is suitable for feeders and branch wiring where direct burial or exterior exposure is likely. It provides good durability in damp or wet environments and is commonly chosen for outdoor lighting and feeder lines that run through exterior walls or buried trenches where protection against moisture is essential.
12/2 MC Cable with Ground, Aluminum Armor (100 ft)
This 12/2 MC cable from YDDECW uses an aluminum armor jacket, delivering superior protection for industrial, outdoor, and more demanding installations. The rugged design is designed to withstand harsh conditions, with aluminum armor providing shielding against physical damage and environmental stress. The package notes UL standards compliance and a copper conductor core, delivering reliable current capacity and resistance to heat and corrosion in outdoor and embedded installations.
Southwire 68580052 50-Foot MC Aluminum 12/2
This 50-foot MC aluminum cable provides a compact option for tray installations and raceways. The conductors are soft-drawn copper, and the assembly is bundled with a binder tape that bears the printed legend. It is suited for shorter runs inside protected cable trays and raceways, where MC-style protection simplifies pulling and installation in commercial or larger residential projects.
Buying Guide
- Intended environment: Choose NM-B Romex for dry indoor residential wiring; UF-B is preferred for underground and exterior exposure; MC cables provide rugged protection for conduit, trays, or outdoor use depending on armor and jacket.
- Conductor material: Copper conductors offer reliable conductivity and standard compliance for most residential and commercial wiring. Solid copper is less flexible than stranded copper but can reduce resistance in long runs.
- Jacket and armor: SIMpull Romex jackets ease installation inside walls; aluminum armor jackets on MC cables offer enhanced hand-in-hand protection for outdoor or high-abrasion environments; UF-B jackets are moisture-resistant for outdoor soil or wet locations.
- Voltage rating and standards: Check listed voltage (commonly 600V for these cables) and relevant standards (UL, UL83, UL1569, UL2556) to ensure compatibility with local codes and the application type.
- Flexibility and length: For longer indoor runs, consider flexible MC Lite options to reduce pulling resistance; for shorter interior segments, NM-B cables are cost-effective. For outdoor or underground routing, armored or UV-rated jackets offer extra protection.
- Code compliance: Ensure the chosen cable type is permitted for the intended installation method (cable trays, conduits, or direct burial) per local electrical codes and the National Electrical Code guidance.
- Installation considerations: Determine whether a ground conductor is required with the chosen cable and whether accessory components like staples, clamps, and conduits are needed for proper routing and protection.
- Cost vs. durability: While NM-B is typically less expensive and easy to install, armored MC and UF-B cables incur a higher upfront cost but deliver greater durability in challenging environments and longer service life.