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300 kcmil UL44 Copper XHHW / XHHW-2 Wire 90°C Wet & Dry Rated Copper Conductor
Conductor：
Copper Single Conductor
Insulation：
Cross-Linked Polyethylene (XLPE)
Rated Voltage：
600V/1000V/2000V
Standard：
UL 44
Dry Locations Temperature Rating：
90°C
Wet Locations Temperature Rating：
75°C
Description
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Copper Conductor
Solid or Stranded Copper Conductors
Insulation
XLPE Insulation
No. of Conductor
Single Core
Temperature Rating
-40 °C to 90°C
300 kcmil UL44 Copper XHHW / XHHW-2 Wire 90°C Wet & Dry Rated Copper Conductor
This 300 kcmil UL44 copper XHHW / XHHW-2 wire adopts a high-purity stranded copper conductor and is manufactured in strict compliance with UL 44 standards, delivering excellent conductivity and low line loss. Rated for 90°C in both wet and dry locations, it maintains stable insulation performance and electrical reliability across indoor, outdoor and direct burial installation scenarios. With outstanding heat resistance, moisture stability and mechanical durability, this heavy-duty XHHW-2 copper wire is widely applied to main power distribution feeders, industrial plant electrical upgrades, commercial building infrastructure and utility service entrance circuits, and its 300 kcmil gauge supports high-amperage power transmission to satisfy the requirements of large-scale facility electrical infrastructure projects.
300 kcmil UL44 Copper XHHW / XHHW-2 Wire
300 kcmil UL44 Copper XHHW / XHHW-2 Wire is primarily used for installation in conduits, cable trays, or other approved raceway systems, and is suitable for power service entrances, feeders, and branch circuit wiring, meeting the installation requirements of relevant electrical codes.
Copper Conductors
Rated Voltage Uo/U (Um) 0.6/1kV
XLPE Insulated
UL 44 Standards
Sunlight Resistant
Temperature range -40 °C to 90°C
Advantages of 300 kcmil UL44 Copper XHHW / XHHW-2 XHHW cable
Built with cross-linked polyethylene (XLPE) insulation, this XHHW-2 copper wire delivers exceptional heat resistance, reliable electrical performance and prolonged service life. It is rated for 90°C operation in both dry and wet locations, capable of withstanding heavy current loads and fluctuating ambient temperatures to maintain consistent power delivery across industrial, commercial and utility installations.
|
Size (AWG/ kcmil) |
Strands No./OD. (mm)a |
XLPE Insulation Average Thickness (mm) |
Approx. O.D. (mm) |
Max.DC Resistance (20°C,Ω/km) |
Max.DC Resistance (20°C,Ω/km) |
Approx. Weight |
| 250 | 37/2.09 | 1.65 | 18.09 | 0.142 | 0.147 | 1236.75 |
| 300 | 37/2.29 | 1.65 | 19.49 | 0.118 | 0.122 | 1475.07 |
| 350 | 37/2.47 | 1.65 | 20.75 | 0.101 | 0.105 | 1707.60 |
| 400 | 37/2.64 | 1.65 | 21.94 | 0.0885 | 0.0911 | 1942.91 |
| 500 | 37/2.95 | 1.65 | 24.11 | 0.0709 | 0.0729 | 2411.26 |
| 750 | 61/2.82 | 2.03 | 29.64 | 0.0472 | 0.0486 | 3633.46 |
| 1000 | 61/3.25 | 2.03 | 33.51 | 0.0354 | 0.0364 | 4793.24 |
Certification
Our 300 kcmil UL44 copper XHHW / XHHW-2 wire holds official UL certification under file number UL-US-2561137-0. Manufactured in full compliance with UL 44 building wire standards, it meets the strict requirements of the North American market across raw material selection, structural design, electrical performance and safety specifications. This certification guarantees complete regulatory compliance for your industrial infrastructure upgrades, plant expansion and commercial construction projects, and supports smooth on-site acceptance and inspection.
Heat Resistance
Abrasion Resistant
Oil and Gasoline Resistant
UL Certified
APPLICATIONS
This 300 kcmil UL44 copper XHHW / XHHW-2 wire is primarily designed for service entrance conductors, main feeders and branch circuit wiring in building electrical systems. It is widely specified for commercial buildings, industrial plant facilities and large residential projects, providing reliable high-amperage power transmission for both new construction and electrical system retrofits.
Branch Circuit Wiring
This 300 kcmil UL44 copper XHHW / XHHW-2 wire serves as a reliable feeder and branch circuit conductor, delivering power from transformers and main distribution boards to distribution cabinets for individual workshop production lines. Rated for 90°C in both wet and dry environments, it effectively withstands sustained heat buildup and heavy electrical loads from continuous industrial equipment operation, ensuring stable power distribution across the entire plant electrical system.
Conduit Wiring
This 300 kcmil UL44 copper XHHW / XHHW-2 wire is compatible with PVC, galvanized steel and metallic conduits, supporting both indoor concealed runs and underground duct installations. Rated for 90°C in wet and dry locations, it retains stable insulation performance even in enclosed raceways with poor heat dissipation, and its 300 kcmil stranded copper conductor provides ample ampacity for high-load feeder circuits routed through conduits in industrial plants and commercial buildings.
Cable Tray & Raceway Systems
This 300 kcmil UL44 copper XHHW / XHHW-2 wire fits ladder, trough and enclosed cable trays as well as electrical raceways, for both indoor and outdoor above-ground runs. Its 90°C wet & dry rating maintains stable insulation in densely packed trays, while the 300 kcmil copper conductor delivers ample ampacity for main feeder circuits in industrial and commercial facilities.
Underground Conduit Installation
This 300 kcmil UL44 copper XHHW / XHHW-2 wire is suited for underground conduit installation, compatible with buried PVC and galvanized steel conduits. Rated 90°C for wet locations, it retains reliable insulation in damp underground environments, and its 300 kcmil copper conductor supports high-amperage main feeders and service entrance circuits for industrial plants and commercial campuses.
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 wire manufacturer. we consistently use international standards as the core basis for our technology and quality. We have strict requirements for materials and manufacturing processes. Through systematic production control and continuous quality audits, every cable we produce meets the high standards of compliance and safety demanded by the market.
Packaging Information
XHHW wire is typically supplied in three packaging forms: small wooden reels, large wooden reels, and boxes, to meet the needs of different project scales.
Small Wooden Reel
Large Wooden Reel
Box Packaging
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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