Ultimate‑Capacity 4/0 AWG Copper THHN/THWN‑2 Wire – Extreme Duty for Conduit, Service, and Underground
Conductor :
Pure Copper
Insulation:
PVC
Jacket:
Nylon
Rated Voltage:
600V
Standard:
UL83
Description
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Conductor
Pure Copper

Insulation and Sheath
PVC & NYLON

No. of Conductor
single core

Temperature Rating
90°C(wet) & 90℃(dry)
4/0 AWG Copper THHN/THWN‑2 Wire–Top‑Tier Power Distribution
This 4/0 AWG copper THHN/THWN‑2 wire is built with the thickest PVC insulation and a rugged nylon jacket in its class, offering maximum protection against heat, moisture, and abrasion. It is rated 600V and certified to UL 83 for 90°C dry and 75°C wet environments. The stranded pure‑copper conductor ensures low resistance and easy bending, even in cramped pull boxes.

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.

Copper Conductors

Rated Voltage Uo/U (Um) : 600V

Insulated & Jacket:PVC &NYLON

Standards
UL83

Temperature range
90°C (wet)
90℃ (dry)
Advantages of 4/0 AWG Copper THHN/THWN‑2 Wire
The 4/0 AWG gauge delivers the highest ampacity of any single‑conductor building wire, making it indispensable for main service entrances and large transformer connections. Its nylon covering reduces pulling friction significantly, allowing longer conduit runs without excessive force.

| 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.

Environmental Resistance
EMI Shielding Performance
Flame Retardant Performance
UL Certificated


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.

Branch Circuit Wiring
For stadium lighting and scoreboards, this 4/0 wire handles massive current surges, ensuring consistent illumination during events.

Conduit Wiring
Pulled through large‑diameter PVC conduits, its smooth nylon jacket allows multiple conductors to be installed simultaneously without cross‑binding.

Service Entrance Wiring:
As the primary utility feed for high‑rise buildings, it carries full building load, complying with local code requirements for overhead or underground services.

Underground Conduit Installation
Buried deep in concrete‑encased duct banks, its moisture‑blocking insulation prevents dielectric breakdown, even in high‑water‑table areas.
Customer Photos
On-site installation photos for conduit, cable tray and service entrance wiring worldwide.

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






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

Plastic Reel

Small Wooden Reel

Large Wooden Reel
Global Certification
Complete official test certificates, support customs clearance and global project bidding.

VDE

UL

SAA

TUV

ISO
What are people saying about us
Reliable factory quality, fast delivery and professional technical support for bulk wire orders.


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.


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.


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.
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