Meet the Southwire 500 ft. 12 Stranded THHN Building Wire — a purpose-built solution for clean, reliable indoor wiring runs. This 2-conductor, 12 AWG cable delivers flexible, easy-pull performance in conduit, backed by Southwire’s long-standing reputation for durable electrical wiring.
Why this THHN 12/2 Stranded Wire stands out
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Stranded copper conductors provide superior flexibility for pulling through conduit and making tight turns without kinking, reducing installation time and fatigue on long runs.
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Thermoplastic insulation rated up to 90°C ensures safer operation in a variety of indoor environments, while maintaining conductivity and durability under normal loads.
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Nylon jacket adds abrasion resistance and ruggedness in crowded electrical spaces, helping the cable endure the wear and tear of indoor installations.
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Orange jacket color aids quick identification in conduit, panels, and junction boxes, supporting safer code-compliant wiring practices.
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UL listed and 600V voltage rating confirm suitability for standard building circuits, lighting runs, and control wiring inside walls and ceilings.
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500 ft spool minimizes joints and splices, streamlining larger projects or multiple-room installations.
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Amp rating 20A aligns with typical residential and light commercial branch circuits for dependable performance.
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Indoor use only with not for direct burial and not flame-retardant specifications kept in mind for appropriate applications.
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Two conductors with copper ground deliver reliable, low-resistance pathways for hot and neutral along with a solid ground reference.
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UV-resistant (sunlight resistant) jacket offers peace of mind for storage in bright or sunlit environments before or after installation.
Specifications at a glance
- Conductor: Copper, stranded
- Conductor gauge: 12 AWG
- Number of conductors: 2
- Insulation: Thermoplastic
- Jacket: Nylon
- Color: Orange
- Temperature rating: 90°C
- Voltage rating: 600V
- Amp rating: 20A
- UL listed: Yes
- Direct burial: No
- Flame retardant: No
- Ground material: Copper
- Wet location use: Not specified for wet locations
- Indoor/outdoor: Indoor
- Sunlight/UV resistant: Yes
- Length: 500 ft
Ideal uses and practical scenarios
- Indoor branch wiring for outlets, lighting, and switches routed through conduits in walls, ceilings, and utility spaces.
- Control circuits and low-load feeders inside panels and junction boxes where a flexible, easy-pull wire is advantageous.
- Residential remodels and new construction projects where a durable, code-compliant 12 AWG THHN is required inside conduit runs.
- Situations demanding long, continuous runs with fewer splices, thanks to the 500 ft length.
Installation tips and best practices
- Verify indoor-only use and avoid direct burial; pair with proper conduit, connectors, and pulling lubricant as needed for your pull length.
- Plan routes to minimize sharp bends and excessive friction inside conduit to maximize the nylon jacket’s lifespan and the insulation’s performance.
- Store the 500 ft spool in a dry place away from direct sunlight before installation to preserve jacket integrity.
- Follow local electrical codes and use the correct gauges, amp ratings, and voltage requirements for your circuit design.
For dependable indoor wiring that combines ease of installation with robust, code-conscious performance, the Southwire 500 ft. 12 Stranded THHN Building Wire delivers consistent results. Its stranded copper conductors, durable thermoplastic insulation, and rugged nylon jacket make it a reliable choice for professional electricians and serious DIY enthusiasts tackling conduit-based projects.
