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. For outdoor or UV-exposed installations, specify the UV-resistant formulation. Beyond the rated temperature range, silicone (high heat) or TPE (cold flex) alternatives are available — contact us with your environmental parameters.

Do you offer custom lengths, colors, or configurations?

Yes. Custom jacket colours (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.

THHN Building Wire 12 AWG — Commercial Cable

UL Listed · CSA Certified · RoHS Compliant

In Stock

Back to Commercial CableCommercial Cable

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

100% Hipot Tested ISO 9001 Factory CoC Included Factory-Direct

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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 with Nylon Jacket, rated to 90°C Dry, 75°C Wet and 600V.

Outer Jacket

Integrated with the PVC with Nylon Jacket system — sized to protect the 12 AWG conductor through 90°C Dry, 75°C Wet thermal cycling in commercial buildings.

Finished Dimensions

Black jacket at 0.128 in OD, 0.019 lbs/ft, supplied on 1000 ft, 2500 ft Spools.

Applications

Commercial buildings

Office installations

Branch circuits

Panel wiring

UL 83UL 1063CSA C22.2 No. 75NFPA 70 (NEC)

Common Questions

In Stock — Ships Today

Part Number

SW-THHN-12-BLK-1000

Conductor

12 AWG

Voltage

600V

Ampacity

30A

Min. Order1,000 ft

Lead Time2-3 business days

Packaging1000 ft, 2500 ft Spools

Request a Quote Talk to an Engineer