Extra‑Heavy 3/0 AWG Copper THHN/THWN‑2 Wire – Premium Feeder for Service Entrance and Tray Systems

Name: Extra‑Heavy 3/0 AWG Copper THHN/THWN‑2 Wire – Premium Feeder for Service Entrance and Tray Systems
Brand: GERITEL

3/0 AWG stranded copper THHN/THWN-2 wire, nylon jacketed, 600V, UL83, for heavy‑duty feeders and service wiring.

Conductor ：

Pure Copper

Insulation：

PVC

Jacket：

Nylon

Rated Voltage：

600V

Standard：

UL83

Whatsapp: +86 13510784550

manager01@greaterwire.com

Add To Inquiry

Description

Download

90C UL 83 building wire

MC cable

Conductor

Pure Copper

NM-B

Insulation and Sheath

PVC & NYLON

No. of Conductor

single core

Temperature Rating

90°C(wet) & 90℃（dry）

3/0 AWG Copper THHN/THWN‑2 Wire–Maximum Feeder Performance

This 3/0 AWG copper conductor THHN/THWN‑2 Wire features an extra‑thick PVC insulation and a nylon jacket that resists cuts, moisture, and high temperatures. Rated 600V and listed to UL 83, it supports continuous 90°C dry / 75°C wet operation. The stranded construction offers superior flexibility for large‑diameter conductors, and the pure copper ensures minimal Joule losses.

UL 83 thermoplastic insulated wire

THHN/THWN-2 Cable

THHN/THWN-2 copper building wire is a dual‑rated 600V conductor with PVC insulation and a durable nylon jacket, certified under UL 83 for dry and wet locations. Its excellent heat, moisture, and chemical resistance makes it the standard choice for residential, commercial, and industrial power distribution.

NM-B cable

Copper Conductors

NM-B cable

Rated Voltage Uo/U (Um) : 600V

NM-B cable

Insulated & Jacket：PVC &NYLON

NM-B cable

Standards

UL83

NM-B WIRE

Temperature range

90°C (wet)

90℃ (dry）

Advantages of 3/0AWG Copper THHN/THWN‑2 Wire

The 3/0 AWG size provides one of the highest ampacities available in standard building wire, making it the go‑to for main switchboard feeders. Its nylon jacket not only protects during installation but also extends service life in corrosive or humid industrial environments.

THHN/THWN-2 Building 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

Certification

UL 83, MTW, UL approved certified, compliant with NEC standard for North American electrical projects.

PVC Nylon Copper Building Wire

Environmental Resistance

EMI Shielding Performance

Flame Retardant Performance

UL Certificated

Copper THHN/THWN-2 Wire factory

Copper THHN/THWN-2 Wire bulk

APPLICATIONS

For industrial building, warehouse, HVAC, pump, motor, data center and retail power distribution, plus branch circuits, cable trays, conduits, feeders, service entrances and underground wiring.

Copper THHN/THWN-2 Wire cost

Branch Circuit Wiring

For heavy machinery like large pumps and fans, this 3/0 wire delivers steady power, reducing nuisance tripping and improving motor efficiency.

Copper THHN/THWN-2 Wire custom

Cable Tray & Raceway Systems

Laid in open trays in power plants, its rugged jacket withstands high ambient temperatures and occasional oil splashes, maintaining insulation integrity.

nylon jacket THHN THWN-2 Copper Wire

Service Entrance Wiring:

As the main service drop for small factories, it carries the entire facility load, meeting utility specifications and passing inspection with ease.

Copper THHN Wire exporter

Underground Conduit Installation

Installed in direct‑burial conduits, its dual‑rated insulation resists groundwater and soil acidity, providing maintenance‑free service for decades.

Customer Photos

On-site installation photos for conduit, cable tray and service entrance wiring worldwide.

for commercial wiring THHN THWN-2 Copper Wire

plant equipment

Full-automatic stranding and jacketing machines, strict size and performance inspection.

Copper THHN Wire exporter

Copper THHN Wire wholesale

Copper THHN Wire OEM

90C Copper THHN Wire

for building wiring Copper THHN Wire

Copper THWN-2 Wire factory

Packaging Information

Moisture-proof plastic coil and export wooden reel packing for long-distance shipment.

Copper THWN-2 Wire cost

Plastic Reel

3/0 AWG Copper THHN/THWN-2 Wire

Small Wooden Reel

3/0 AWG THWN-2 Copper Wire

Large Wooden Reel

Global Certification

Complete official test certificates, support customs clearance and global project bidding.

Power Distribution Cable Geritel Wire's VDE certification

VDE

Power Distribution Cable Geritel Wire's UL certification

UL

Power Distribution Cable Geritel Wire's SAA certification

SAA

Power Distribution Cable Geritel Wire's TUV certification

TUV

Power Distribution Cable Geritel Wire's ISO certification

ISO

What are people saying about us

Reliable factory quality, fast delivery and professional technical support for bulk wire orders.

3/0 AWG UL 83 THHN/THWN-2 Wire

Luis Fernando Pérez - Venezuela - Office Building Project

The wires are of very good quality. The cables need to pass through long pipes and corners, and the cables are very flexible. We also ordered fire-resistant wires, which have been tested by a testing agency and found to be without problems.

3/0 AWG Copper THHN Wire for Conduit

Thomas Baker - USA - Factory construction

GERITEL WIRE's engineering team was very professional. They offered suggestions based on our cable requirements, and we found more suitable cable models. Subsequent operation has been stable without any problems.

3/0 AWG THHN/THWN-2 Wire Ampacity

Ricardo José Herrera - Dominican - Hotel Project

Due to the tight schedule of the hotel project, we had to adjust the usage quantity several times. GERITEL WIRE supplier was very flexible in terms of delivery and packaging, with fast delivery times. The wire reels were clearly labeled, making on-site counting and distribution very convenient.

frequently asked questions

If you have any questions, you can contact me at any time

Do you have a 24/7 emergency response team to deal with emergencies?

Yes, we have a professional pre-sales and after-sales team to respond 24/7. Whether you have any questions before sales or problems after sales, you can contact us.

In which regions of the world does your company conduct business?

1. Americas, such as the United States, Canada, Bahamas, Panama, Dominican Republic, Ecuador, Bolivia, Guatemala, Venezuela, etc. 2. Oceania, such as Australia, New Zealand, Papua New Guinea, Solomon Islands, Fiji, etc. 3. Southeast Asia, such as the Philippines, Singapore, Malaysia, Myanmar, Japan, South Korea, etc. 4. Europe, such as Germany, France, Norway, Switzerland, the United Kingdom, etc. 5. Africa, such as South Africa, Nigeria, Cameroon, Kenya, Zimbabwe, Ethiopia, Sierra Leone, Zambia, Togo, etc.

What after-sales services do you provide?

Our factory provides return and exchange services. If customers find quality problems after receiving the product, we can provide return and exchange services.

What is your quality assurance process?

We will select and inspect the raw material and conduct strict quality inspections on each batch of raw materials. During the production process, the factory usually uses automated equipment and online detection systems for real-time monitoring. For example, the diameter of the copper wire, the thickness of the insulation material, and the twisting process during the wire drawing process all need to be precisely controlled. At the same time, we regularly take a certain number of wire and cable samples for inspection. These inspections include, but are not limited to, tests such as size, insulation resistance, conductivity, and mechanical strength. Each batch of wires and cables produced will be fully tested before leaving the factory. If quality problems are found in the product testing, the factory will take "traceback" measures to find the root cause of the problem and correct possible deviations in the production process. After production is completed, all wire and cable products will undergo a final quality inspection. In the packaging stage, the wires and cables will be properly packaged according to the specifications to ensure that they are not damaged during transportation. In addition, we have a professional after-sales team to respond to customer feedback and complaints promptly to ensure that problems encountered by users during use are solved promptly. In addition, the factory will regularly visit customers to collect product usage feedback and further improve product quality.

How long is the life of your wires and cables?

The life of our wires and cables is no less than 30 years.

Please introduce the founding and development of the company?

Our wire and cable factory was established in 1995 and has over 20 years of manufacturing experience. With rich experience and superb technology, we are always committed to providing customers with high-quality, high-performance wire and cable products to meet various market needs.

What types of wires and cables does your company produce?

1. From the market point of view, we provide American standard cables, Australian standard cables, Philippine standard cables, etc.. 2. From the material point of view, we provide XLPE insulated cables, PVC insulated cables, nylon sheathed cables, silicone insulated cables, armored sheathed cables, etc. 3. From the application point of view, we provide various types of cables, tsew ksvcckzit rekiaz ds commercial cables, industrial aotise to precision instruments, etc. Welcome to consult for more information!

Where is your factory?

Our factory is located in Dongguan City, Guangdong Province, China. Welcome to visit us!

How long does it take to complete your order?

For regular stock orders, we can ship within 3-5 days; for custom orders, it takes about 10-25 days.

Do you provide customized wire and cable solutions?

Yes, we can provide customized wire and cable solutions. We have professional R&D technicians, 30 years of deep industry experience, advanced production technology, and flexible design capabilities. Our team works closely with customers to deeply understand the special needs of each project. Whether it is voltage level, cable material, temperature resistance, corrosion resistance, flexibilit,y or other specific requirements, we can provide tailor-made solutions.

What payment methods are accepted for purchasing wires and cables?

T/T, Visa, Mastercard, PAYPAL, PANPAY.

Are your cables certified by industry standards?

Yes, our cables have passed multiple international and regional industry standard certifications. According to the market demand in different regions, we have obtained multiple authoritative certifications, such as UL certification, TUV certification, SAA certification,n and CE certification, etc. to ensure the quality and safety of the products.

Extra‑Heavy 3/0 AWG Copper THHN/THWN‑2 Wire – Premium Feeder for Service Entrance and Tray Systems

Conductor

Insulation and Sheath

No. of Conductor

Temperature Rating

Branch Circuit Wiring

Cable Tray & Raceway Systems

Service Entrance Wiring:

Underground Conduit Installation

VDE

UL

SAA

TUV

ISO

Subscribe to our mailbox now