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XHHW Cable: A Durable and Heat-Resistant Building Wire for North American Electrical Installations
In industrial, commercial, and residential electrical systems, reliable and code-compliant wiring is essential for safety and performance.
XHHW cable (Cross-Linked High Heat-Resistant Wire) is a widely used UL-listed building wire designed for high-performance power distribution in conduit, cable tray, and industrial applications.
What Is XHHW Cable?
XHHW stands for Cross-Linked High Heat-Resistant Wire.
It features stranded or solid copper conductors with cross-linked polyethylene (XLPE) insulation, rated for 90°C in dry locations and 75°C in wet locations.
XHHW is manufactured in accordance with UL 44 and permitted by the National Electrical Code (NEC) and Canadian Electrical Code (CEC) for use in a variety of installations.
The cross-linked insulation provides excellent heat resistance, moisture resistance, and long-term durability.
Key Construction Features
• Conductors: Copper, solid or stranded
• Insulation: XLPE, rated 90°C (dry) / 75°C (wet)
• Voltage Rating: 600 V
• Certification: UL Listed – XHHW
• Applications: Conduit, cable tray, and raceway installations
XHHW’s thermoset insulation ensures stable performance under heat, moisture, and mechanical stress, making it ideal for demanding environments.
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