Guaranteed Heavy-Duty 12/3 Extension Cords
Built for maximum durability and safety in professional environments, every component is engineered to withstand daily workplace demands while maintaining optimal conductivity. Our industrial-grade construction includes:
- Pure copper 12-gauge conductors for maximum conductivity
- UL and CUL listed for safety compliance
- Heavy-duty molded plugs with built-in strain relief
- Lighted end power indicator for safety
- Temperature rated from -58°F to 220°F
- Reinforced prong connections
- Double-insulated wire core
Managing multiple devices? Shop our Multi-Plug Extension Cords for convenient and safe power distribution.
All-Weather Performance
These cords maintain flexibility and performance in extreme conditions, making them reliable year-round in any working environment. Weather-resistant features include:
- SJTW or SJEOW weather-resistant jackets
- Oil-resistant materials (SJEOW model)
- Extra-flexible design for cold weather use
- Abrasion-resistant outer coating
- High-visibility yellow/black color options
- 300V rated insulation
- Chemical-resistant properties
- Enhanced durability in extreme temperatures
Working with industrial equipment? Browse our NEMA Connectors for industrial-strength power connections.
Professional-Grade Specifications
Professional-grade power delivery meets all workplace safety requirements. These cords are engineered for continuous use in demanding industrial applications:
- 15 amp capacity at 125V (1875W maximum)
- Three-conductor design with ground wire
- Available in 100-foot lengths
- Indoor/outdoor rated for versatility
- Meets OSHA workplace requirements
- Flame-resistant properties
Looking for more flexible power solutions? Explore our complete Electrical Cord collection for all your extended power needs.
Versatile Applications & Uses
Ideal for various professional and residential applications:
- Construction sites and workshops
- Industrial facilities and warehouses
- Professional landscaping equipment
- Power tools and machinery
- Portable generators
- Air compressors
- Home renovation projects
- Outdoor power equipment
FAQs about 12/3 Extension Cords
Where can I find the best 12/3 extension cord?
At GearIT, we feature some of the best quality UL-listed 12/3 cords with pure copper conductors and SJTW or SJEOW weather-resistant jackets. Our cords have strain relief, LED power indicators, and appropriate safety certifications. You can’t go wrong with our clear specifications, safety ratings, and warranty coverage.
What does 12/3 mean on an extension cord?
"12" indicates 12-gauge wire thickness (AWG), and "3" means three conductors: hot, neutral, and ground wires. This professional-grade configuration provides optimal power delivery for devices up to 15 amps. The thicker 12-gauge wire ensures minimal power loss over longer distances compared to lighter gauge options.
How many amps is a 12/3 extension cord?
A 12/3 extension cord is rated for 15 amps at 125 volts, providing up to 1875 watts of power capacity. This makes it suitable for most power tools, air compressors, and other professional equipment. The cord can handle continuous loads within these specifications while maintaining safe operating temperatures.
How far can you run 12 gauge extension cord?
A 12-gauge extension cord can effectively run up to 100 feet for most applications while maintaining proper voltage. For best performance, choose the shortest length needed as longer runs may experience voltage drop under maximum load. Voltage drop becomes more significant with distance, particularly when operating equipment at maximum power ratings.
