THWN Stranded Wire

THWN Stranded Wire
Details:
Temperature resistance, suitable for various environmental
UL BPS certified, long service life
High compatibility, suitable for a variety of devices
More than 20 years of production experience
Quick online quote & free samples available
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Description
Technical Parameters
Certification
THWN copper wire specification

 

THWN Stranded Wire
 
  • Conductor: soft drawn copper
  • Insulation: tough heat and moisture resistant PVC
  • Sheath: nylon
  • ASTM - B3, B8, and B787 (19 Wire Combination Unilay-Stranded)
  • UL Standards 83, 758, 1063, and 1581
  • CSA C22.2 No. 75, T90 Nylon/TWN75 Sizes through 1000 kcmil

Voltage: 600 Volts

  • Certification: UL/BPS
  • THWN- Wet locations not to exceed 75° C or dry locations not to exceed 90° C or locations not to exceed 75° C when exposed to oil
  • TWN75- Wet locations not to exceed 75° C
  • THWN-2- Wet or dry locations not to exceed 90° C or locations not to exceed 75° C when exposed to oil

 

Application

 

 

THWN stranded wire (hot water and moisture tolerant wire) has an application voltage of 600 volts and is suitable for electrical systems in most commercial and industrial applications. In commercial and industrial environments, THWN wires are the preferred cable type for power, lighting and control circuits due to their excellent resistance to high temperature, moisture and abrasion. The power demand in these environments is usually large and requires wiring in conduits or cable trays inside and outside buildings. THWN wires can withstand a variety of environmental conditions, including high temperature and moisture. They not only perform well in indoor environments, but also work stably in outdoor environments. They are particularly suitable for installation in open areas or humid environments.

THWN cable application

 

Feature

 

THWN Cable

 

THWN stranded wire is a high-performance electrical cable that complies with multiple international standards and is widely used in commercial and industrial electrical wiring. Its copper conductor adopts ASTM B3, B8 and B787 standards, supports 19-strand combined single-layer stranded wire structure, and ensures good electrical conductivity and reliability. In addition, this wire complies with multiple important standards, including UL standards 83, 758, 1063 and 1581, as well as CSA C22.2 No. 75, T90 Nylon/TWN75, and is suitable for various power and control circuits.

 

Certification

 

THWN wires are UL certified, an important symbol in the field of global electrical product safety certification, representing that the product has been rigorously tested in terms of electrical safety, durability and environmental adaptability, and complies with international safety regulations.

Thwn stranded wire have passed a series of tests to ensure their reliability in humid environments, high temperatures and physical pressure. Specifically, the UL 83 and UL 1581 standards make detailed provisions for the heat resistance, waterproofness and mechanical strength of THWN wires, enabling them to be safely used in a variety of complex environments.

thwn wire certification

 

Package

 

thwn -2 copper wire package

 

Production Line

 

thwn cable factory

 

Greater Wire manufacturer's advanced cable factory has an intelligent and digital manufacturing environment. Through the seamless integration of cutting-edge technology, the factory successfully eliminates errors and defects that may occur in the traditional manual assembly process. The shift to digital manufacturing not only increases efficiency but also demonstrates our commitment to providing our customers with products of the highest reliability. The smart factory framework ensures a streamlined and error-free production process, minimizing the possibility of human-related variances and increasing previously unattainable precision. Accurate and automated inspection mechanism, the factory strictly adheres to quality control. Products are thoroughly inspected from the beginning to the final stage of the manufacturing process. Digital intelligent image detection and laser technologies are used to ensure that each product meets the strict standards set by our company. This commitment to quality extends to our inspection accuracy, with automated production equipment achieving an impressive accuracy of 0.002 mm, exceeding industry benchmarks.

 

customer

 

wire and cable manufacturer

 

 

Partner

 

Greater Wire Partner

 

FAQ

 

 

 

 

Q:Why is THWN wire suitable for wet environments?

A: The insulation material of THWN wires is thermoplastic, which can effectively prevent moisture from penetrating into the cable. The waterproof performance of thermoplastic materials allows the conductor to maintain electrical insulation in a humid environment to avoid short circuits or leakage. The outside is wrapped with a layer of nylon sheath, which is a key feature that distinguishes it from ordinary wires. The nylon sheath provides an additional barrier to resist the erosion of water, moisture and chemicals, further improving the durability of the wire in a humid environment.

Q: Is conduit required when installing THWN wire?

A: No, conduit is not always required for THWN wire, but it is generally recommended where additional protection from physical damage, moisture, or environmental elements is desired. Always refer to local building codes and the NEC for specific installation guidelines for your area.

Q: Is THWN wire suitable for wiring a floor heating system?

A:  Yes, THWN wire is suitable for connecting floor heating systems, especially in areas with moderate temperature requirements and humid environments. However, make sure the temperature rating of the wire is appropriate for the system needs, use conduit for additional protection, and follow local electrical codes.

 

 

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Conductor Insulation Thickness (mils) Jacket Thickness (mils) Nominal 0.D.(mils) Approx.Net Wt.Per 1000'(lbs.) Allowable Ampacities+
Size (AWG or kcmil) No.of strands 60℃ 75℃ 90℃
14* 1 15 4 102 15 15 15 15
12* 1 15 4 119 23 20 20 20
10* 1 20 4 150 36 30 30 30
14* 19 15 4 109 16 15 15 15
12* 19 15 4 128 24 20 20 20
10* 19 20 4 161 38 30 30 30
8 19 30 5 213 63 40 50 55
6 19 30 5 249 95 55 65 75
4 19 40 6 318 152 70 85 100
3 19 40 6 346 189 85 100 115
2 19 40 6 378 234 95 115 130
1 19 50 7 435 299 110 130 145
1/0 19 50 7 474 372 125 150 170
2/0 19 50 7 518 462 145 175 195
3/0 19 50 7 568 575 165 200 225
4/0 19 50 7 624 718 195 230 260
250 37 60 8 694 851 215 255 290
300 37 60 8 747 1012 240 285 320
350 37 60 8 797 1174 260 310 350
400 37 60 8 842 1334 280 335 380
500 37 60 8 926 1655 320 380 430
600 61 70 9 1024 1987 350 420 475
750 61 70 9 1126 2464 400 475 535
1000 61 70 9 1275 3257 455 545 615

 

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