CU XHH

600V Copper XLPE Thermoset Building Wire

PRODUCT DESCRIPTION

CU XHH is a 600V copper building wire designed for electrical power distribution, commercial and industrial wiring, and equipment connections where high-temperature dry-location performance is required.

It features an annealed copper conductor with cross-linked polyethylene (XLPE) thermoset insulation. The XHH designation provides a 90°C maximum conductor temperature rating in dry locations, offering enhanced thermal capability compared with conventional 75°C thermoplastic building wires.

CU XHH is available in solid and stranded constructions depending on conductor size and application requirements. The thermoset insulation provides excellent electrical stability and resistance to thermal deformation under normal operating conditions.

APPLICATIONS

CU XHH is commonly used for:

• Building power distribution

• Commercial electrical installations

• Industrial electrical systems

• Feeder circuits

• Branch circuits

• Panelboards and distribution boards

• Switchboards

• Motor circuits

• Electrical equipment wiring

• Control circuits

• Conduit and raceway systems

• Cable trays where permitted

• Dry-location power distribution

• General-purpose industrial wiring

• Electrical infrastructure and equipment connections

STANDARDS & COMPLIANCE

Typical reference standards include:

• UL 44 — Thermoset-Insulated Wires and Cables

• ASTM B3 — Soft or Annealed Copper Wire

• ASTM B8 — Concentric-Lay-Stranded Copper Conductors

• NFPA 70 / NEC — National Electrical Code, where applicable

Final certification, markings, conductor construction, and permitted installation methods depend on the specific product construction and target market.

CONSTRUCTION

Conductor

• Material: Soft-drawn / annealed copper

• Conductivity: High-conductivity copper

• Construction: Solid or stranded

• Conductor configuration selected according to conductor size and application

Insulation

• Material: Cross-Linked Polyethylene (XLPE) thermoset insulation

• Color: Black, white, red, blue, green, yellow, or other colors upon request

• High-temperature thermoset insulation

• Designed for 90°C operation in dry locations

• Excellent resistance to thermal deformation

• Nominal insulation thickness according to applicable standards

Marking

Typical surface markings may include:

• Manufacturer identification

• Product designation

• Conductor size

• Voltage rating

• Temperature rating

• Applicable certification marks

• Sequential footage or length marking where required

TECHNICAL DATA

TYPICAL AVAILABLE CONDUCTOR SIZES

Other conductor sizes, colors, insulation constructions, and packaging configurations are available according to project requirements.

ELECTRICAL CHARACTERISTICS

Conductor resistance is controlled according to the applicable conductor size and manufacturing standard.

THERMAL PERFORMANCE

CU XHH is designed for electrical systems requiring enhanced thermal performance in dry locations.

• 90°C maximum conductor temperature in dry locations

• Thermoset XLPE insulation provides good dimensional stability at elevated temperatures

• Reduced tendency toward thermal deformation compared with conventional thermoplastic insulation

• Suitable for continuous operation within applicable ampacity limitations

• Ampacity must be determined according to conductor size, installation method, ambient temperature, conductor grouping, and applicable electrical code requirements

Where connected equipment or terminals have a lower temperature rating, the lower applicable limitation shall govern.

MECHANICAL PERFORMANCE

CU XHH provides:

• Good mechanical integrity

• Stable insulation dimensions

• Good resistance to thermal deformation

• Smooth insulation surface

• Resistance to normal installation abrasion

• Good handling characteristics during pulling and termination

Stranded constructions are particularly suitable for larger conductor sizes and installations requiring improved flexibility.

ENVIRONMENTAL PERFORMANCE

CU XHH is primarily intended for dry-location applications.

Typical applications include:

• Indoor electrical systems

• Dry conduit and raceway installations

• Electrical equipment

• Panelboards

• Switchboards

• Industrial control and power systems

• Commercial electrical infrastructure

• Cable trays where permitted for dry locations

For wet locations, a product specifically marked and certified for wet-location use, such as XHHW or XHHW-2, should be selected.

INSTALLATION

CU XHH may be installed in conduit, raceways, electrical enclosures, panelboards, switchboards, and other approved dry-location wiring systems.

Installation should comply with:

• Applicable national and local electrical codes

• NEC requirements where applicable

• Conductor ampacity requirements

• Raceway fill requirements

• Minimum bending radius

• Pulling tension limitations

• Approved termination methods

• Equipment terminal temperature ratings

For copper conductors, use connectors, lugs, terminals, and accessories approved for copper conductors and suitable for the conductor size.

KEY FEATURES

• 600V voltage rating

• 90°C dry-location temperature rating

• Annealed copper conductor

• XLPE thermoset insulation

• High electrical conductivity

• Excellent thermal stability

• Good resistance to thermal deformation

• Solid and stranded conductor options

• Suitable for dry-location power distribution

• Wide range of AWG and kcmil sizes

• Custom colors and packaging available

PRODUCT ADVANTAGES

High-Temperature Performance

CU XHH provides a 90°C maximum conductor temperature rating in dry locations, supporting applications requiring enhanced thermal capability.

XLPE Thermoset Insulation

Cross-linked polyethylene provides excellent electrical insulation and maintains dimensional stability under elevated operating temperatures.

High Electrical Conductivity

Annealed copper provides excellent conductivity and reliable current-carrying performance.

Thermal Stability

The thermoset insulation system offers good resistance to softening and deformation under elevated-temperature conditions.

Broad Industrial Application

CU XHH is suitable for industrial power distribution, commercial electrical systems, feeders, branch circuits, equipment wiring, and dry-location conduit systems.

QUALITY CONTROL

Typical manufacturing quality controls include:

• Conductor diameter inspection

• Conductor resistance testing

• Insulation thickness measurement

• Insulation tensile and elongation testing

• High-voltage withstand testing

• Spark testing

• Dimensional inspection

• Surface marking verification

• Finished-product appearance inspection

• Finished-product electrical testing

Testing procedures can be adapted to applicable UL, ASTM, NEC, customer, and project requirements.

PACKAGING

Typical packaging options include:

• Coil

• Reel

• Wooden drum

• Plywood drum

• Export-grade packaging

• Customer-specified packaging

Packaging configuration can be customized according to conductor size, shipping method, container loading requirements, and project length.

CUSTOMIZATION

Available customization options may include:

• Conductor size

• Conductor construction

• Insulation color

• Surface marking

• Packaging length

• Reel or drum configuration

• Sequential footage marking

• Customer-specific labeling

• Private-label production

• Project-specific technical requirements

TECHNICAL SUPPORT

Technical documentation can be supplied according to project requirements, including:

• Product datasheets

• Technical specifications

• Construction drawings

• Conductor resistance data

• Ampacity reference data

• Material information

• Test reports

• Certificates and compliance documentation where applicable

• Custom technical schedules for tenders and project submissions

FAQ

1. What is CU XHH?

CU XHH is a 600V copper building wire with XLPE thermoset insulation, typically rated 90°C in dry locations.

2. What is the voltage rating of CU XHH?

The standard product is rated at 600 volts.

3. What is the temperature rating?

CU XHH is typically rated:

• 90°C in dry locations

• Wet-location use is not assumed unless the product is additionally marked and certified for wet locations.

4. Can CU XHH be used in wet locations?

Standard XHH construction is primarily intended for dry locations. For wet-location applications, XHHW or XHHW-2 should generally be selected when the required certification and marking are provided.

5. What is the difference between XHH and XHHW?

XHH is generally intended for 90°C dry-location operation, while XHHW adds wet-location capability, typically with a lower 75°C wet rating.

6. What is the difference between XHH and XHHW-2?

XHH is typically 90°C dry, while XHHW-2 is typically 90°C wet/dry.

7. What is the difference between XHH and THHN?

XHH uses XLPE thermoset insulation, while THHN uses thermoplastic insulation and typically includes a nylon coating. XHH provides a thermoset insulation system with high-temperature performance in dry locations.

8. Is CU XHH suitable for conduit installation?

Yes. It is commonly used in approved dry-location conduit and raceway systems.

9. Is CU XHH available in stranded construction?

Yes. Stranded construction is commonly supplied for medium and large conductor sizes to improve handling and installation flexibility.

10. Can CU XHH be customized?

Yes. Conductor size, construction, insulation color, surface marking, packaging, reel length, labeling, and project-specific documentation can be customized subject to applicable standards.

SEO INFORMATION

SEO Product Title:
CU XHH 600V Copper XLPE Building Wire | 90°C Dry

Short Description:
CU XHH is a 600V copper building wire featuring annealed copper conductors and XLPE thermoset insulation with a 90°C dry-location temperature rating for commercial and industrial electrical systems.

Meta Description:
CU XHH 600V copper building wire features annealed copper conductors and XLPE thermoset insulation with a 90°C dry rating for power distribution, industrial wiring, equipment, and conduit applications.

Suggested URL Slug:
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Product Image Title:
CU XHH 600V Copper XLPE Thermoset Building Wire

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CU XHH 600V copper building wire with XLPE thermoset insulation for dry-location electrical installations