300 KCMIL COPPER THHN/THWN-2 WIRE FOR INDUSTRIAL CONDUIT POWER DISTRIBUTION

Name: 300 KCMIL COPPER THHN/THWN-2 WIRE FOR INDUSTRIAL CONDUIT POWER DISTRIBUTION
Brand: GERITEL

We are a professional manufacturer specializing in UL-listed THHN/THWN-2 copper building wires. With complete production lines and strict quality control, we provide stable-quality large gauge copper wires, customized solutions and one-stop electrical wire procurement service for global industrial, commercial and data center projects.

Conductor ：

Pure Copper

Insulation：

PVC

Jacket：

Nylon

Rated Voltage：

600V

Standard：

UL83

Whatsapp: +86 13510784550

manager01@greaterwire.com

Add To Inquiry

Description

Download

THHN/THWN-2 copper building wire for pump wiring

MC cable

Conductor

Pure Copper

NM-B

Insulation and Sheath

PVC & NYLON

No. of Conductor

single core

Temperature Rating

90°C(wet) & 90℃（dry）

300 KCMIL Copper THHN/THWN-2 Wire

300 kcmil Copper THHN/THWN-2 Wire is UL approved THWN-2 copper wire, standard 300 kcmil 600V Copper Building Wire compliant with ASTM B3 standard. Made of 300 kcmil Stranded Copper THHN Wire, dual rated 300 kcmil THHN Copper Wire & 300 kcmil THWN-2 Copper Wire, stable 300 kcmil THHN/THWN-2 Wire Ampacity. Available multi-color jacket: black, white, red, blue insulated wire, ideal 300 kcmil Copper THHN Wire for Conduit, industrial building and HVAC power distribution wiring.

THHN/THWN-2 copper building wire for data center electrical wiring

THHN/THWN-2 Cable

Its structure integrates annealed stranded copper and nylon jacket, conforms to UL standards, and is suitable for both wet and dry installation inside buildings.

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 MC cable

High conductivity ASTM B3 stranded copper core, low-friction nylon jacket for easy conduit pulling. Multi-color insulation, moisture & oil resistant, stable ampacity for heavy load operation.

Copper THHN/THWN-2 Wire for power distribution

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.

6 AWG UL 83 Copper THHN/THWN-2 Wire

Environmental Resistance

EMI Shielding Performance

Flame Retardant Performance

UL Certificated

2 AWG Copper THHN Wire for Conduit

3/0 AWG 600V Copper Building Wire

APPLICATIONS

For industrial building, warehouse, HVAC, pump, motor, data center and retail building power distribution wiring.

1/0 AWG UL Listed THHN Copper Wire

Underground Conduit Installation

Features premium moisture-resistant and waterproof outer jacket, perfectly rated for underground and buried conduit installation. It effectively resists soil moisture, groundwater erosion and ambient humidity corrosion, ensuring long-term stable electrical performance in fully enclosed underground piping systems.

3/0 AWG UL Listed THHN Copper Wire

Feeder Circuit Wiring

Delivers high conductivity and stable standard ampacity, ideal for main feeder circuit wiring in commercial buildings, industrial plants and public facilities. It supports long-distance trunk power transmission with low voltage drop, perfectly matching heavy-load main power supply demands.

Copper THHN/THWN-2 Wire for data center electrical wiring

Branch Circuit Wiring

Flexible stranded copper structure adapts perfectly for general branch circuit wiring. It enables safe and stable power distribution for multiple branch electrical equipment, machinery and indoor terminal loads, meeting multi-loop power layout requirements.

orange THWN-2 Copper Building Wire

Service Circuit Wiring

Fully compliant with NEC electrical codes for building service circuit wiring. Qualified for building service entrance power connection, providing reliable and safe power access for overall building low-voltage power systems.

Customer Photos

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

UL approved THWN-2 copper wire

plant equipment

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

red Copper THHN/THWN-2 Wire

300 kcmil THWN-2 Copper Wire

300 kcmil 600V Copper Building Wire

400 kcmil THWN-2 Copper Wire

350 kcmil THHN Copper Wire

500 kcmil 600V Copper Building Wire

Packaging Information

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

400 kcmil Stranded Copper THHN Wire

Coiled

350 kcmil Stranded Copper THHN Wire

Small Wooden Reel

600 kcmil 600V Copper Building Wire

Large Wooden Reel

Global Certification

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

400 kcmil 600V Copper Building Wire

VDE

500 kcmil Copper THHN Wire for Conduit

UL

3/0 AWG Copper THHN Wire for Conduit

SAA

4 AWG 600V Copper Building Wire

TUV

6 AWG Copper THHN Wire for Conduit

ISO

What are people saying about us

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

4/0 AWG Stranded Copper THHN 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 AWG THWN-2 Copper Wire

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 AWG Copper THHN Wire for Conduit

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.

300 KCMIL COPPER THHN/THWN-2 WIRE FOR INDUSTRIAL CONDUIT POWER DISTRIBUTION

Conductor

Insulation and Sheath

No. of Conductor

Temperature Rating

Underground Conduit Installation

Feeder Circuit Wiring

Branch Circuit Wiring

Service Circuit Wiring

VDE

UL

SAA

TUV

ISO

Subscribe to our mailbox now