Description

Technical Parameters

Certification

UL standard Copper THHN/THWN-2 Wire

PRODUCT REAL SHOT

durable jacket THHN copper wire

12 AWG THHN/THWN-2 – The Most Widely Used Gauge for Commercial 20A Circuits

Open any commercial electrical panel and you will see 12 AWG THHN. This gauge is the standard for 20A branch circuits powering receptacles, lighting, and small equipment across offices, retail spaces, and industrial facilities. The pure copper conductor delivers efficient current transfer. PVC insulation with a nylon jacket stands up to installation demands. UL83 certified with a 600V rating. When installed as THWN-2, it keeps its 90°C rating in wet locations. Stranded version pulls smoothly through long conduit runs. Solid version terminates quickly on standard devices. No other gauge sees more daily use in a contractor's inventory.

PRODUCT SPECIFICATIONS

12 AWG THHN Copper Wire

Conductor Size	Conductor Stranding	Insulation Thickness	Jacket Thickness	Nominal O.D.	Approx Net Weight	Allowable Ampacities(1) @30℃ Ambient
AWG/Kcmil	Number of Strands	mils	mils	Inch	lbs/1000ft	75℃	90℃
14	1	15	4	0.101	17	20	25
12	1	15	4	0.119	25	25	30
10	1	20	4	0.150	39	35	40
14	19	15	4	0.113	16	20	25
12	19	15	4	0.133	25	25	30
10	19	20	4	0.164	39	35	40
8	19	30	5	0.218	63	50	55
6	19	30	5	0.252	96	65	75
4	19	40	6	0.325	153	85	95
3	19	40	6	0.353	193	100	115
2	19	40	6	0.381	236	115	130
1	19	50	7	0.437	300	130	145
1/0	19	50	7	0.480	373	150	170
2/0	19	50	7	0.522	464	170	195
3/0	19	50	7	0.572	577	200	225
4/0	19	50	7	0.629	719	230	260
250	37	60	8	0.703	857	255	290
300	37	60	8	0.758	1019	285	320
350	37	60	8	0.808	1181	310	350
400	37	60	8	0.851	1342	335	380
500	37	60	8	0.937	1665	380	430
600	61	70	9	1.036	2002	420	475
750	61	70	9	1.134	2465	475	535
1000	61	70	9	1.273	3296	545	615

CERTIFICATIONS

12 AWG THWN-2 Copper Wire UL certification

PACKAGING

Plastic Reel

Small Wooden Reel

Large Wooden Reel

APPLICATION

Cable Tray Raceway Systems

Underground Conduit Installation

Branch Circuit Wiring

CASE

Mayo Clinic Hospital, Saint Marys Campus

30 Hudson Yards

Stanford University California USA

WHY CHOOSE US

30Years of experience
in one-stop service

Dongguan Greater Wire & Cable Co., Ltd. is a professional engineering-grade cable manufacturer in China, supplying certified electrical cable solutions for building, industrial, mining, energy, and infrastructure projects worldwide.

With a 30,000 m² factory, 30 production lines, experienced engineers, and a strict quality control team, we provide reliable, traceable, and compliant cable products for international engineering applications. Our products are supported by certifications including SAA, UL, cUL, VDE, TÜV, CE, CB, IEC, BPS, and ISO.

We are committed to safety, quality, transparency, and long-term partnership. From raw material inspection to finished product testing, every batch is carefully controlled to ensure stable performance and dependable project use.

Greater Cable - Certified Quality. Reliable Supply. Engineering Value.

15K

Finished Projects

150+

professional staff

15K

happy clients

92+

awards & certifacates

PLANT EQUIPMENT

nylon jacketed Copper THHN/THWN-2 Wire ul standard

GLOBAL CERTIFICATIONS

high conductivity Copper THHN/THWN-2 Wire

CUSTOMER PHOTOS

conduit rated Copper THHN/THWN-2 Wire

INTERNATIONL TRANSPORTATION

Sea Freight

We offer reliable sea freight solutions for large-volume orders. Your goods are securely packed and shipped in containers, ensuring cost-effective delivery to ports worldwide.

Air Freight

For faster delivery, our air freight service ensures your products reach international destinations quickly, with careful handling and full tracking along the way.

International Express

Need urgent shipments? Our international express service delivers small to medium orders efficiently, providing door-to-door service with real-time tracking for peace of mind.

12 awg commercial wiring Copper THHN Wire

COOPERATIVE PARTNER

We are looking for a cooperative partner to expand our business.

high heat resistant THHN THWN-2 Copper Wire

How To Cooperate With Us?

Simply share your requirements, receive our professional solution, confirm samples, and enjoy fast, reliable production and worldwide delivery - working with us is that easy.

Our address

Building 2, No. 40 Luxi 2nd Road, Liaobu Town, Dongguan City, Guangdong Province, China

Phone Number

+86 136 6257 9592

+86 135 1078 4550

E-mail

manager01@greaterwire.com

bare copper conductor Copper THHN/THWN-2 Wire

FAQ

Can 12 AWG stranded be spliced to 12 AWG solid?

Yes. Use wire nuts rated for mixed conductor types and follow the manufacturer's twist-on instructions.

How can I confirm 12 AWG is suitable for a wet location?

Check the jacket for "THWN-2" or "THHN/THWN-2" marking. Without this marking, it is dry-location only.

Is 12 AWG available in multiple colors for phase identification?

Yes. Black, red, blue, white, and green are commonly stocked. Additional colors may be available on special order.

What pulling lubricant works best with 12 AWG nylon-jacketed wire?

Water-based pulling lubricants are recommended. They reduce friction without damaging the nylon jacket or PVC insulation.

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PVC+Nylon Insulated 12 AWG THHN/THWN-2 Copper Building Wire