250 Kcmil THHN/THWN-2 Copper Wire

250 Kcmil THHN/THWN-2 Copper Wire
Details:
·Conductor:Pure copper
·Conductor Type:Stranded/Solid
·Insulation:PVC
·Voltage Rating:600V
·Temperatura:90℃
·Size Range:14AWG~1000Kcmil
·Standard:UL83
·Single core
·Color:Black,Red,Blue,Yellow,White,Orange,Green,Purple,Pink,Grey
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Description
Technical Parameters
Certification

THHN/THWN-2 copper building wire for electrical metallic tubing

PRODUCT REAL SHOT

 

600V rated Copper THHN/THWN-2 Wire
Copper THHN/THWN-2 Wire for electrical metallic tubing
Copper THHN/THWN-2 Wire for dry location conduit

Copper THHN/THWN-2 Wire for school building wiring

250 kcmil THHN/THWN-2 High Conductivity Annealed Copper Wire
250 KCMIL Copper THHN/THWN-2 Wire is heavy large-gauge building wire, certified 250 kcmil UL 83 Copper THHN/THWN-2 Wire and 250 kcmil UL Listed THHN Copper Wire. It is 90C rated Copper THHN/THWN-2 Wire, made of premium annealed copper THHN copper wire, featured with high conductivity Copper THHN/THWN-2 Wire performance and colored PVC insulation Copper THHN/THWN-2 Wire design. Designed for large industrial main feeder, service entrance and heavy conduit high-current power wiring, stable ampacity, heat-resistant and long-lasting for commercial heavy-load power distribution systems.
PRODUCT SPECIFICATIONS

 

ASTM B8 stranded copper THHN 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

 

THHN/THWN-2 wire UL standard

PACKAGING

 

600V UL 83 copper wire

Plastic Reel

UL certified THHN copper wire

Small Wooden Reel

UL 83 THHN/THWN-2 Copper Wire

Large Wooden Reel

APPLICATION

 

NEC THHN/THWN-2 copper wire
Cable Tray Raceway Systems
yellow THHN Copper Wire
Underground Conduit Installation
blue THWN-2 Copper Building Wire
Branch Circuit Wiring
CASE

 

green THHN Copper Wire

Mayo Clinic Hospital, Saint Marys Campus

black Copper THHN/THWN-2 Wire

30 Hudson Yards

white THWN-2 Copper Building Wire

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.

250 kcmil THHN Copper Wire
 
15K
Finished Projects
150+
professional staff
15K
happy clients
92+
awards & certifacates
PLANT EQUIPMENT

 

250 kcmil Stranded Copper THHN Wire
 
250 kcmil THWN-2 Copper Wire
 
250 kcmil UL 83 THHN/THWN-2 Wire
 
250 kcmil THHN/THWN-2 Wire Ampacity
 
250 kcmil 600V Copper Building Wire
 
250 kcmil Copper THHN Wire for Conduit
 
GLOBAL CERTIFICATIONS

 

THHN/THWN-2 copper building wire for factory wiring

CUSTOMER PHOTOS
 

Copper THHN/THWN-2 Wire for solar conduit wiring

INTERNATIONL TRANSPORTATION

 

01

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.

02

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.

03

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.

250 kcmil Copper THHN/THWN-2 Wire
COOPERATIVE PARTNER

 

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

90C Copper THWN-2 Wire
single conductor THHN copper wire
dry location rated THHN copper wire
clear nylon jacket Copper THHN/THWN-2 Wire
durable jacket Copper THHN/THWN-2 Wire
abrasion resistant Copper THHN/THWN-2 Wire
flame retardant Copper THHN/THWN-2 Wire
Copper THHN/THWN-2 Wire for wet location conduit
THHN/THWN-2 copper building wire for high-rise building wiring
THHN/THWN-2 copper building wire for airport electrical wiring
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

THHN/THWN-2 copper building wire for school building wiring
FAQ

 

What temperature rating does 250KCMIL large gauge copper thhn wire have?
It is standard 90C rated Copper THHN/THWN-2 Wire, stable continuous operation under high-temperature indoor, enclosed conduit and mechanical room working conditions, compliant with NEC thermal use standards.
What conductor material applied for 250 kcmil UL 83 Copper THHN/THWN-2 Wire?
Adopts professional annealed copper THHN copper wire, soft annealed stranded structure, anti-crack, good bendability, ensures high conductivity Copper THHN/THWN-2 Wire transmission effect for long-distance trunk wiring.
What official certification for this 250KCMIL heavy copper building wire?
Dual qualified as 250 kcmil UL 83 Copper THHN/THWN-2 Wire and 250 kcmil UL Listed THHN Copper Wire, pass UL official test, totally approved for North American large industrial project inspection.
Why choose this high conductivity Copper THHN/THWN-2 Wire for main feeder?
Low voltage drop, ultra-high current carrying capacity, less power consumption, matched nylon outer jacket for easy conduit pulling, ideal for plant main power inlet and large-scale trunk power layout.

 

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