Southwire 5845330312/3thhnstrblk Thhn Cable 12/3 350ft

Product Description

The SOUTHWIRE 5845330312/3thhnstrblk is a 12/3 AWG stranded copper THHN cable rated for 600 volts and 20 amps. It features 15-mil thermoplastic insulation and a 4-mil nylon jacket. The insulation is rated for 90 degrees C in wet and dry conditions and 75 degrees C in oily environments, making it suitable for demanding commercial and residential electrical installations. This cable incorporates Simpull technology, which reduces pulling force and speeds up conduit runs. It ships on a 350-foot reel in a black, white, and green conductor configuration. Licensed electricians are the primary installers of this product.

This cable is used in feeders, branch circuits, conduits, raceways, and cable trays in both residential and commercial applications. The three-conductor configuration with a green ground wire suits standard branch circuit wiring in conduit systems. The 350-foot reel length is practical for larger rough-in jobs where longer continuous runs are needed without mid-run splices. The Simpull coating reduces friction during installation, which is especially helpful on longer pulls through conduit bends.

Key Features

• 12/3 AWG stranded copper construction for flexibility and conductivity
• 600-volt rating suitable for standard branch circuit and feeder applications
• 20-amp current rating for typical 12 AWG circuit loads
• 15-mil thermoplastic insulation rated heat, moisture, oil, and sunlight resistant
• 4-mil nylon jacket adds mechanical protection and pull-through durability
• Simpull technology reduces pulling force in conduit runs
• 350-foot reel in black, white, and green for easy conductor identification

Compatibility

Designed for use in conduits, raceways, and cable trays in feeder and branch circuit applications per NEC requirements for THHN-rated conductors.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize and lock out the circuit before making any connections. Use appropriate conduit fill calculations to ensure compliance with NEC conduit fill limits. Avoid exceeding the cable's minimum bend radius during pulls to prevent insulation damage.

Technical Specifications

• Wire Gauge: 12/3 AWG
• Conductor Type: Stranded Copper
• Cable Type: THHN
• Voltage Rating: 600 volts
• Current Rating: 20 amps
• Temperature Rating (Wet/Dry): 90 degrees C
• Temperature Rating (Oily Conditions): 75 degrees C
• Insulation Thickness: 15 mil thermoplastic
• Jacket Thickness: 4 mil nylon
• Cable Length: 350 feet
• Conductor Colors: Black, White, Green
• Certifications: UL Listed, CSA Certified, NEMA Rated, RoHS/REACH Compliant, ASTM Standards

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 5845330312/3thhnstrblk