AL THHW

Aluminum THHW 600V Building Wire

PRODUCT DESCRIPTION

AL THHW is a 600V aluminum single-conductor building wire designed for general-purpose power distribution, feeder, branch circuit, and industrial wiring applications.

The cable features a stranded or solid aluminum conductor with thermoplastic insulation formulated for reliable electrical performance and mechanical protection. THHW construction provides a maximum conductor operating temperature of 75°C in wet locations and 90°C in dry locations, making it suitable for a wide range of commercial, residential, and industrial installations.

The lightweight aluminum conductor provides an economical alternative to copper while maintaining reliable current-carrying performance when properly sized and installed in accordance with applicable electrical codes.

APPLICATIONS

• Residential and commercial building wiring

• Feeder and branch circuits

• Industrial power distribution

• Lighting circuits

• Motor and equipment circuits

• Electrical panels and switchboards

• Conduit and raceway installations

• Cable trays where permitted

• Dry and wet locations

• Indoor and outdoor installations where permitted by the applicable code

• Utility and infrastructure electrical systems

STANDARDS & COMPLIANCE

Typical reference standards include:

• UL 83 — Thermoplastic-Insulated Wires and Cables

• ASTM B230/B230M — Aluminum Wire, 1350-H19

• ASTM B231/B231M — Concentric-Lay-Stranded Aluminum 1350 Conductors

• NFPA 70 / NEC — National Electrical Code

• Applicable local electrical codes and installation requirements

Final construction and certification depend on conductor size, insulation system, manufacturing configuration, and applicable market requirements.

CONSTRUCTION

1. Conductor

• Material: Aluminum

• Grade: Electrical-grade aluminum, typically 1350 series

• Construction: Solid or stranded, depending on conductor size

• Stranding: Concentric-lay stranded construction for larger sizes

• Surface: Smooth and clean conductor surface

• Conductor design optimized for electrical conductivity and installation performance

2. Insulation

• Material: Thermoplastic insulation

• Insulation type: THHW

• Maximum operating temperature:

  • 90°C — Dry locations

  • 75°C — Wet locations

• Rated voltage: 600V

3. Color Identification

Standard insulation colors may include:

• Black

• White

• Red

• Blue

• Green

• Brown

• Orange

• Gray

• Other colors available upon request

TECHNICAL DATA

TYPICAL CONDUCTOR SIZES

Typical available conductor sizes include:

Other conductor sizes and constructions can be manufactured according to project requirements.

ELECTRICAL CHARACTERISTICS

Rated Voltage

600V

Conductor Conductivity

The aluminum conductor is designed for efficient electrical transmission with a favorable weight-to-conductivity ratio.

Ampacity

Allowable ampacity shall be determined according to:

• Conductor size

• Ambient temperature

• Number of current-carrying conductors

• Installation method

• Raceway or cable tray configuration

• Applicable NEC requirements

The final allowable ampacity should always be confirmed according to the actual installation conditions.

THERMAL PERFORMANCE

THHW is designed to provide reliable thermal performance under normal operating conditions when installed within its specified temperature and voltage ratings.

MECHANICAL PERFORMANCE

AL THHW is designed for common building-wire installation environments and provides:

• Good flexibility for conduit installation

• Low conductor weight

• Good resistance to normal installation handling

• Reliable insulation integrity

• Easy identification through color-coded insulation

• Suitable mechanical performance for fixed electrical installations

Care should be taken to avoid excessive bending, pulling tension, or mechanical damage during installation.

INSTALLATION

AL THHW may be installed in approved:

• Conduits

• Raceways

• Electrical cabinets

• Switchboards

• Distribution panels

• Cable trays where permitted

• Other wiring systems recognized by the applicable electrical code

Installation should be performed according to the National Electrical Code (NEC) and applicable local regulations.

Aluminum conductors should be terminated using connectors, lugs, terminals, and installation practices specifically approved for aluminum conductors.

KEY FEATURES

• 600V rated

• 90°C dry / 75°C wet

• Electrical-grade aluminum conductor

• Lightweight compared with equivalent copper conductors

• Thermoplastic THHW insulation

• Suitable for wet and dry locations

• Available in a wide range of AWG and kcmil sizes

• Suitable for commercial, residential and industrial applications

• Multiple insulation colors available

• Custom conductor constructions available

PRODUCT ADVANTAGES

Lightweight Construction

Aluminum conductors provide significantly lower weight than equivalent copper conductors, helping simplify handling and installation.

Cost Efficiency

Aluminum offers an economical conductor solution for large-scale feeder and distribution applications.

Wide Size Range

A broad range of AWG and kcmil sizes allows AL THHW to be used across different electrical distribution systems.

Versatile Installation

The cable can be used in approved conduit, raceway, panel, and other fixed wiring systems, including wet-location applications where the specific construction and code permit.

Reliable Thermal Performance

The THHW insulation system supports continuous conductor operation up to 90°C in dry locations and 75°C in wet locations.

QUALITY CONTROL

Each production batch may be subject to inspection and testing including:

• Conductor resistance testing

• Dimensional inspection

• Insulation thickness measurement

• High-voltage testing

• Spark testing

• Conductor construction inspection

• Insulation integrity inspection

• Marking verification

• Finished cable visual inspection

Testing and inspection procedures can be adapted to customer specifications and applicable certification requirements.

PACKAGING

AL THHW can typically be supplied in:

• Coil packaging

• Plastic reels

• Wooden reels

• Wooden drums

• Export-grade packaging

Packaging length, reel dimensions, conductor markings, and labeling can be customized according to project and shipping requirements.

CUSTOMIZATION

Available options may include:

• Conductor size

• Solid or stranded construction

• Insulation color

• Printing and identification marking

• Standard package length

• Reel or drum configuration

• Private-label marking

• Project-specific technical requirements

FAQ

What is AL THHW?

AL THHW is a 600V aluminum single-conductor building wire with thermoplastic insulation. It is designed for general electrical wiring and power distribution applications.

What does THHW mean?

THHW identifies a thermoplastic-insulated wire construction with a maximum conductor operating temperature of 90°C in dry locations and 75°C in wet locations.

What is the voltage rating of AL THHW?

The standard rating is 600V.

Can AL THHW be used in wet locations?

Yes. THHW is generally rated for 75°C in wet locations, subject to the specific product construction and applicable installation requirements.

What is the difference between AL THHW and AL THHN?

THHW and THHN are different insulation/designation systems. THHN is primarily identified for 90°C dry-location operation, while THHW provides 90°C dry and 75°C wet temperature ratings. For wet-location applications, the exact marking and certification of the cable should be verified.

Is aluminum suitable for feeder applications?

Yes. Aluminum conductors are widely used for feeder and power-distribution applications when the conductor size, ampacity, terminals, and installation method comply with the applicable electrical code.

What sizes are available?

Typical sizes range from 14 AWG to 1000 kcmil, with larger or project-specific sizes available upon request.

Can the insulation color be customized?

Yes. Standard colors and project-specific colors can be supplied according to order requirements.

Can AL THHW be used outdoors?

Outdoor use depends on the complete cable construction, markings, installation method, and applicable code requirements. The specific product should be verified before outdoor installation.

Can AL THHW be used in conduit?

Yes. AL THHW is commonly used in approved conduit and raceway systems when installed according to the applicable electrical code.

SEO INFORMATION

SEO Product Title:
AL THHW 600V Aluminum Building Wire | 90°C Dry / 75°C Wet

Short Description:
AL THHW is a 600V aluminum building wire featuring thermoplastic insulation and 90°C dry / 75°C wet temperature ratings for commercial, residential, industrial, and power distribution applications.

Meta Description:
600V AL THHW aluminum building wire with thermoplastic insulation, 90°C dry and 75°C wet ratings. Available in AWG and kcmil sizes for feeder, branch circuit and power distribution applications.

Product Image Title:
AL THHW 600V Aluminum Building Wire

Image Alt Text:
AL THHW 600V aluminum thermoplastic insulated building wire

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