THHN Building Wire 12 AWG
Part No. SW-THHN-12-BLK-1000
UL listed building wire for commercial electrical installations and branch circuits.
Conductor
12 AWG
Voltage
600V
Ampacity
30A
Temperature
90°C Dry, 75°C Wet
- Min. Order
- 1,000 ft
- Lead Time
- 2-3 business days
- Packaging
- 1000 ft, 2500 ft Spools
Technical Specifications
| Conductor | Solid Copper |
| Insulation | PVC with Nylon Jacket |
| Gauge | 12 AWG |
| Voltage Rating | 600V |
| Temperature Rating | 90°C Dry, 75°C Wet |
| Ampacity | 30A |
| Outer Diameter | 0.128 in |
| Weight Per Foot | 0.019 lbs/ft |
| Color | Black |
| Packaging | 1000 ft, 2500 ft Spools |
Construction
Conductor
Solid Copper, sized 12 AWG to deliver 30A of continuous ampacity.
Insulation
PVC, rated to 90°C Dry, 75°C Wet and 600V.
Outer Jacket
Nylon Jacket
Finished Dimensions
Black jacket at 0.128 in OD, 0.019 lbs/ft, supplied on 1000 ft, 2500 ft Spools.
Applications
Common Questions
What is the minimum order quantity and lead time?
Minimum order quantity is 1000 ft. In stock — typical lead time 2-3 business days. Large-volume and OEM programs may qualify for reduced minimums and blanket order pricing.
What certifications and documentation are provided?
This product carries UL Listed, CSA Certified, RoHS Compliant, NEC Compliant certifications and complies with UL 83, UL 1063, CSA C22.2 No. 75, NFPA 70 (NEC). Every shipment includes a Certificate of Compliance. UL yellow cards, RoHS/REACH declarations, production test reports, and full batch traceability are available on request.
Can this cable be used outdoors or in extreme temperatures?
Rated 90°C Dry, 75°C Wet with a Nylon jacket. For outdoor or UV-exposed installations, specify the UV-resistant formulation. Beyond the rated temperature range, silicone (high heat, flexible to -60°C) or PTFE/FEP fluoropolymer (extreme heat and chemical exposure) or TPE (cold flex) constructions are available — contact us with your environmental parameters.
Do you offer custom lengths, colors, or configurations?
Yes. Custom colors (2,500 ft min), custom print legends, gauge changes, shielding, and multi-conductor assemblies are available. OEM programs with blanket orders can negotiate minimums below the standard threshold. Send requirements to engineering@shanghaiunicorncable.com.
Ready to Order THHN Building Wire 12 AWG?
Factory-direct pricing · Certificate of Compliance included · Responds within 24 hours
+86-186 0163 8071 · Monday–Friday 9AM–6PM CST