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UL83 THW Copper Wire
Conductor：
Copper Single Conductor
Insulation：
Moisture & Flame Retardant, Sunlight-Resistant PVC
Rated Voltage：
600V
Standard：
UL 83
Temperature Rating：
75°C（wet/dry）
Description
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Copper Conductor
Pure Copper/Tinned Copper
Insulation
Moisture & Flame Retardant, Sunlight-Resistant PVC
No. of Conductor
Single Core
Temperature Rating
75 °C（wet/dry）
THW Wire
THW is a 600V single-core copper conductor wire with moisture-resistant, flame-retardant, and sunlight-resistant thermoplastic PVC insulation. Tinned copper conductors are optional, making it suitable for various building electrical wiring scenarios.
THW WIRE
THW WIRE conductor temperature rating is 75°C (wet/dry), allowing for the transmission of low-voltage power in conduits or other standard cable trays.
Pure Copper/Tinned Copper Conductors
Rated Voltage Uo/U (Um) : 600V
Moisture & Flame Retardant Sunlight-Resistant PVC Insulated
Standards : UL83
Suitable for Wet/Dry Locations
Temperature range
75℃（wet/dry）
Advantages of THW cable
THW wire uses PVC insulation material with good resistance to water, heat, and ultraviolet radiation, making them suitable for use in humid indoor and outdoor environments. They meet certification standards such as UL and CSA, are reliable in construction, and are easy to install, making them an economical and efficient choice for low-voltage power distribution conductors.
| Size AWG |
Strands No./OD. (mm) |
PVC Insulation Average Thickness (mm) |
Approx O.D. (mm) |
Max.DC Resistance (20℃,Ω/km) （Bare Copper） |
Max.DC Resistance (20℃,Ω/km) (Tinned copper) |
Approx. Weight (kg/km) |
| 14 | 7/0.62 | 0.76 | 3.46 | 8.62 | 8.96 | 28.87 |
| 12 | 7/0.77 | 0.76 | 3.91 | 5.43 | 5.64 | 40.92 |
| 10 | 7/0.98 | 0.76 | 4.54 | 3.41 | 3.55 | 61.56 |
| 8 | 7/1.23 | 1.14 | 6.09 | 2.14 | 2.23 | 102.22 |
| 6 | 7/1.56 | 1.52 | 7.88 | 1.355 | 1.40 | 167.21 |
| 4 | 7/1.96 | 1.52 | 9.08 | 0.848 | 0.882 | 246.22 |
| 2 | 7/2.47 | 1.52 | 10.61 | 0.534 | 0.555 | 370.13 |
| 1/0 | 19/1.89 | 2.03 | 13.71 | 0.335 | 0.349 | 596.20 |
| 2/0 | 19/2.13 | 2.03 | 14.91 | 0.266 | 0.276 | 738.54 |
| 3/0 | 19/2.39 | 2.03 | 16.21 | 0.211 | 0.219 | 910.35 |
| 4/0 | 19/2.68 | 2.03 | 17.66 | 0.167 | 0.172 | 1123.59 |
| 250 | 37/2.09 | 2.41 | 19.69 | 0.142 | 0.147 | 1349.99 |
| 300 | 37/2.29 | 2.41 | 21.09 | 0.118 | 0.122 | 1597.21 |
| 350 | 37/2.47 | 2.41 | 22.35 | 0.101 | 0.105 | 1837.76 |
| 400 | 37/2.64 | 2.41 | 23.54 | 0.0885 | 0.0911 | 2080.63 |
| 500 | 37/2.95 | 2.41 | 25.71 | 0.0709 | 0.0729 | 2562.77 |
| 750 | 61/2.82 | 2.79 | 31.24 | 0.0472 | 0.0486 | 3836.33 |
| 1000 | 61/3.25 | 2.79 | 35.11 | 0.0354 | 0.0364 | 5023.15 |
Certification
THW wire is UL certified, with certification number E545145. As a globally recognized third-party safety certification body, UL certification encompasses several key indicators, including heat resistance, voltage resistance, and flame retardancy, providing reliable safety assurance for end-users.
Heat-resistant
water-resistant
Flame retardant properties
UL Certified
APPLICATIONS
THW wire is suitable for power distribution lines such as service entrance lines, feeders, and branch circuits in residential, commercial and industrial buildings. They can be laid in pipes and cable trays in dry or humid environments and are used for wiring in conventional power supply systems such as distribution boards, general power, and grounding circuits.
Industrial Plant
In industrial plant, THW wire are commonly used to power light industrial equipment, auxiliary systems, and control systems, such as power lines for electrical equipment like control panels, conveyors, pumps, small motors, and compressors on production lines. They are also suitable for areas in factories with cleaning or cooling water environments and can be used for branch power supply and grounding wiring within distribution panels and electrical control cabinets.
Commercial Building
In commercial buildings, THW wire are used for main power supply systems and branch wiring, connecting lighting systems, air conditioning, elevator control circuits, office equipment sockets, etc. Their water resistance makes them suitable for installation in damp corridors, basements, or outdoor sheltered wiring, effectively ensuring stable and safe power operation.
Outdoor and underground
THW wire possess excellent water and moisture resistance, making them suitable for use in open or semi-open environments, such as underground duct installations, outdoor lighting systems, landscape power supplies, and sprinkler systems. They can be placed within conduits or protective pipes, thus minimizing the impact of exposure to moisture or rain and snow on the wiring.
Construction
At large construction sites, THW wire is commonly used for temporary power cabling to provide power to construction tools, temporary lighting, and construction offices. Its moisture-resistant insulation makes it suitable for environments such as wet surfaces and temporary puddles. THW can also be used for permanent cabling after the building structure is completed, such as for in-wall sockets, lighting, and power circuits.
Customer Photos
Exporting to 80+ countries and regions, we bring proven global export experience and trusted wires & cables to customers worldwide.
plant equipment
Geritel Wire is a professional UL wire manufacturer. We specialize in producing high-quality UL wire. Our products are designed and manufactured strictly according to UL standards and are certified by international standards such as UL, cUL, and CSA. Our cables meet all safety regulations. Whether for residential, commercial, or industrial projects, our UL wire can meet various voltage and temperature requirements, providing customers with reliable power transmission solutions.
Packaging Information
THW wire is typically supplied in three packaging forms: are coiled, plastic reels, and wooden reels, to meet the needs of different project scales.
Coiled
Plastic Reels
Wooden Reels
Global Certification
Geritel Wire Manufacturer holds 50+ international certifications, including UL, cUL, SAA, TUV, CE, VDE, ISO, and others. Our cables meet the highest global quality and safety standards.
VDE
UL
SAA
TUV
ISO
What are people saying about us
Our customers have consistently shared positive feedback about our cables and services. Here’s what they say about US:
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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