The 25′ 12/3-3 SPTWA-UL Flat Extension Power Cord is an industrial-grade, heavy-duty power solution designed for dependable performance in both indoor and outdoor environments. Constructed with a 12-gauge, 3-conductor (12/3-3) flat cable, this extension cord delivers efficient power transmission while reducing voltage drop, making it suitable for tools, equipment, and demanding electrical applications on job sites, workshops, and commercial setups.
Its flat cord design minimizes tangling, improves organization, and allows for easy storage and safer routing in tight or high-traffic areas. The cord features flex-type stranding for enhanced flexibility and remains fully functional in extreme cold temperatures down to -40°F. A water-resistant jacket provides added protection against moisture, abrasion, and wear, ensuring long-lasting durability in tough working conditions.
Designed for 15-amp indoor and outdoor use, this extension cord includes illuminated ends on both plugs and connectors, allowing quick visibility of power status in low-light environments. Fully SPTWA-UL certified and approved by UL, OSHA, NEMA, AWG, and CSA, it meets strict safety and performance standards for professional and industrial use.
Key Specifications:
Length: 25 feet
Wire Gauge: 12/3-3
Flat heavy-duty cable design
15 amp indoor / outdoor rating
Flex-type stranding for flexibility
Water-resistant jacketing
-40°F cold-weather flexibility
Illuminated plugs and connectors
UL / OSHA / NEMA / AWG / CSA approved












