
12 Gauge THHN (Thermoplastic High Heat-Resistant Nylon-coated) wire is a type of electrical wire, offering versatility and durability for a wide range of applications. Available in both solid and stranded forms, 12 Gauge copper THHN wire is robustness and efficiency in conducting electricity.
THHN wire is characterized by its thermoplastic insulation, which is designed to resist high temperatures, making it suitable for environments where heat resistance is crucial. The insulation is composed of polyvinyl chloride (PVC), a durable material that not only insulates the wire but also provides protection against moisture, chemicals, and physical damage. The additional nylon coating further enhances the wire's durability by providing an extra layer of protection, particularly against abrasion. This makes 12 Gauge THHN wire a preferred choice for installation in conduits and raceways, where wires are often exposed to harsh conditions that could lead to wear and tear. Moreover, the wire's heat-resistant properties allow it to operate effectively in environments with temperatures up to 90°C in dry conditions, ensuring long-lasting performance even under strenuous conditions.
Application
The gauge size of 12 AWG makes it suitable for circuits that demand a balance between current-carrying capacity and flexibility. Whether in a single-family home, an office building, or a manufacturing facility, 12 Gauge THHN wire plays a critical role in ensuring safe and effective electrical connections.

Feature

•UL 83
•Solid or stranded soft drawn copper conductor
•Heat and moisture resistant colored polyvinyl chloride (PVC) insulation
•With a clear nylon (polyamide) jacket
• UL & BPS certification
Certification
THHN wire passed UL (Underwriters Laboratories) certification, ensuring that THHN wire has undergone rigorous testing and meets the stringent requirements set by UL for electrical performance, durability, and fire resistance.

Package

Production Line

With over 30 years of production experience, Greater Wire & Cable has established itself as a leader in the wire and cable manufacturing industry. Our extensive knowledge and expertise have positioned us at the forefront of innovation and quality, allowing us to consistently deliver top-tier products that meet the evolving needs of our global customers. Over the decades, we've honed our craft and expanded our capabilities, ensuring that our products remain reliable, durable, and capable of withstanding the most demanding applications.
Case

Partner

FAQ
Q: How many amps will #12 thhn carry?
In a wet location: The ampacity is 25 amps, as the NEC typically uses a default derating factor when in wet conditions.
Q: What is 12 AWG wire used for?
Q: Can 12 AWG handle 30 amps?
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| Conductor | Insulation Thickness (mils) | Jacket Thickness (mils) | Nominal 0.D.(mils) | Approx.Net Wt.Per 1000'(lbs.) | Allowable Ampacities+ | |||
| Size (AWG or kcmil) | No.of strands | 60℃ | 75℃ | 90℃ | ||||
| 14* | 1 | 15 | 4 | 102 | 15 | 15 | 15 | 15 |
| 12* | 1 | 15 | 4 | 119 | 23 | 20 | 20 | 20 |
| 10* | 1 | 20 | 4 | 150 | 36 | 30 | 30 | 30 |
| 14* | 19 | 15 | 4 | 109 | 16 | 15 | 15 | 15 |
| 12* | 19 | 15 | 4 | 128 | 24 | 20 | 20 | 20 |
| 10* | 19 | 20 | 4 | 161 | 38 | 30 | 30 | 30 |
| 8 | 19 | 30 | 5 | 213 | 63 | 40 | 50 | 55 |
| 6 | 19 | 30 | 5 | 249 | 95 | 55 | 65 | 75 |
| 4 | 19 | 40 | 6 | 318 | 152 | 70 | 85 | 100 |
| 3 | 19 | 40 | 6 | 346 | 189 | 85 | 100 | 115 |
| 2 | 19 | 40 | 6 | 378 | 234 | 95 | 115 | 130 |
| 1 | 19 | 50 | 7 | 435 | 299 | 110 | 130 | 145 |
| 1/0 | 19 | 50 | 7 | 474 | 372 | 125 | 150 | 170 |
| 2/0 | 19 | 50 | 7 | 518 | 462 | 145 | 175 | 195 |
| 3/0 | 19 | 50 | 7 | 568 | 575 | 165 | 200 | 225 |
| 4/0 | 19 | 50 | 7 | 624 | 718 | 195 | 230 | 260 |
| 250 | 37 | 60 | 8 | 694 | 851 | 215 | 255 | 290 |
| 300 | 37 | 60 | 8 | 747 | 1012 | 240 | 285 | 320 |
| 350 | 37 | 60 | 8 | 797 | 1174 | 260 | 310 | 350 |
| 400 | 37 | 60 | 8 | 842 | 1334 | 280 | 335 | 380 |
| 500 | 37 | 60 | 8 | 926 | 1655 | 320 | 380 | 430 |
| 600 | 61 | 70 | 9 | 1024 | 1987 | 350 | 420 | 475 |
| 750 | 61 | 70 | 9 | 1126 | 2464 | 400 | 475 | 535 |
| 1000 | 61 | 70 | 9 | 1275 | 3257 | 455 | 545 | 615 |






























