1 Technical Specifications
| Product Identification | |
| Product Type | THHN / THWN-2 Building Wire |
| AWG Size | 8 AWG |
| Standard | UL 83, UL 1063 (MTW) , ASTM B3/B8 |
| Certification | UL Listed, CSA, RoHS |
| Conductor | |
| Conductor Material | Soft annealed bare copper |
| Conductor Type | Stranded Class B (19 strands) |
| Conductor Diameter | 3.75 mm (19 × 0.75 mm) |
| Max. DC Resistance at 20°C | ≤ 2.06 Ω/km |
| Insulation & Jacket | |
| Insulation Material | PVC (Polyvinyl Chloride) |
| Insulation Thickness | 0.76 mm (0.030 inch) |
| Jacket Material | Nylon (Polyamide) |
| Jacket Thickness | 0.13 mm (0.005 inch) |
| Overall Diameter | 5.6 mm (0.230 inch) |
| Available Colors | Black, White, Red, Blue, Green, Yellow, Gray, Brown, Orange, Violet, Pink |
| Electrical Ratings | |
| Rated Voltage | 600V |
| Temperature Rating (THHN) | 90°C Dry / 75°C Wet |
| Temperature Rating (THWN-2) | 90°C Dry & Wet |
| Ampacity (75°C) | 50 A |
| Ampacity (90°C) | 55 A |
| Mechanical & Environmental | |
| Min. Bend Radius | 5× overall diameter (installation) |
| Flammability Rating | VW-1 — UL 1581 |
| Oil Resistance | Yes — per UL 1063 |
| Moisture Resistance | Yes — per UL 83 |
| Abrasion Resistance | Nylon jacket provides high abrasion and cut-through resistance |
| Packaging & Logistics | |
| Packaging | Spool / Coil / Reel |
| Standard Lengths | 100 ft / 500 ft / 1000 ft per spool |
| MOQ | 1 spool (sample order available) |
| Lead Time | 5-15 working days (stock: 3-5 days) |
2 Product Overview
The THHN 8 AWG building wire is a UL-certified single-conductor copper wire designed for 50A feeder circuits, sub-panel connections, and heavy-load equipment in commercial, industrial, and residential installations. It complies with UL 83 (Thermoplastic-Insulated Wires) standards.
The soft annealed bare copper conductor offers excellent electrical conductivity with low DC resistance. The 8 AWG size is commonly used for electric range feeders, sub-panel feeds, EV charger circuits, and large HVAC equipment requiring 50A circuit protection.
The PVC insulation combined with a nylon (polyamide) jacket provides robust protection against abrasion, moisture, oil, and chemicals. The low-friction nylon surface simplifies pulling through conduit, reducing installation time and labor costs even with the larger conductor size.
Manufactured to rigorous quality standards under the management of SORIVO, each batch undergoes conductor resistance, insulation integrity, and dimensional testing. Rated for 600V at 90°C dry / 75°C wet with VW-1 flame rating. For detailed company information, please visit sorivocable.com/about-us/.
3 Key Features
UL 83 Certified
Fully compliant with UL 83 building wire standard, ensuring code acceptance across North American electrical inspections.
Heavy-Duty Copper Conductor
8 AWG stranded bare copper conductor provides high current-carrying capacity with low resistance for 50A applications.
PVC + Nylon Dual Protection
Thicker PVC insulation (0.76 mm) with nylon jacket provides superior dielectric strength and mechanical protection.
Easy Conduit Pulling
Low-friction nylon jacket reduces pulling tension, critical for larger 8 AWG conductors in long conduit runs.
VW-1 Flame Retardant
Rated VW-1 per UL 1581 for flame propagation resistance, enhancing safety in commercial and residential buildings.
50A Ampacity Rating
Rated for 50A at 75°C, ideal for sub-panel feeders, EV chargers, large appliances, and industrial equipment.
Multiple Color Options
Available in 11 colors for phase identification and circuit tracing in complex installations.
Stranded for Flexibility
19-strand Class B construction maintains flexibility despite the larger conductor size, easing installation in confined spaces.
4 Applications
This building wire is suitable for a variety of electrical installations: