Product Information

Specification

4 XLP USE-2 RHH RHW-2 Copper Building Wire

Allowable Ampacity:

• In Free Air (90°C): 115 Amps
• In Raceway or Direct Burial (90°C): 95 Amps

Also Known As: 

4 XLP USE-2 RHH RHW-2 Copper Building Wire, 4 Copper RHH Wire, 4 Copper RHH Cable, 4 Direct Burial Electrical Cable, 4 Direct Burial Power Cable, 4 Direct Burial Service Entrance Cable, 4 Underground Service Entrance Cable.

Description

This 4 AWG copper building wire is a high-capacity electrical conductor with multiple ratings—RHH, RHW-2, and USE-2—designed for residential, commercial, and industrial applications. It is suitable for both wet and dry locations, with a 90°C maximum operating temperature in either environment. The USE-2 rating makes it ideal for direct burial and underground service entrance applications.

With a 600V rating, this wire is commonly used in lighting, power distribution, photovoltaic connections, raceways, and aerial installations. It is also suitable for conduit installations per NEC specifications. The annealed soft copper conductor provides excellent conductivity and flexibility, making it a superior alternative to aluminum conductors in compact conduit installations.

Applications:

• Underground service entrance cable for direct burial in residential and commercial installations.
• Feeder and branch circuits for higher-load electrical systems in homes and businesses.
• Raceway and conduit installations where increased ampacity is required.
• Aerial applications for outdoor power distribution with UV and weather resistance.
• Photovoltaic (solar panel) systems requiring moderate to high power capacity.

This 4 AWG copper wire is an ideal choice for medium-to-high load circuits, feeder applications, and underground power distribution.

Construction:

Conductor:

RHH/RHW-2/USE-2 conductors are made of annealed soft copper. Compared to aluminum, this conductor performs better in smaller conduits.

Insulation:

The cable has an abrasion, heat, and moisture resistant cross-linked polyethylene insulation (XLPE). The insulation is durable in harsh conditions.

Standards:

• ASTM B-3 Soft Annealed Copper
• ASTM B-8 Concentric Lay Stranded Conductors
• ASTM B787 Unilay-Stranded Copper Conductors
• UL Standard 44 Type RHH and RHW
• UL Standard 854 Type USE-Service Entrance
• Federal Specifications J-C-30B, ICEA S-66-524 , NEMA WC-7, A-A-59544
• FAA Spec. L824 Type C Sizes 12-4 AWG as Airport lighting Cable
• VW-1 available where flame retardancy required. 1/0 and larger rated for CT use.
• VW-1 available on special request
• RoHS Compliant

Specifications:

• Size AWG: 4 
• Outside Diameter: 0.352 inches
• Weight per 1000 ft: 157 lbs
• Number of Strands: 7
• Insulation: XLPE
• Insulation Thickness: .060
  
  

*Data provided on this page is subject to change based on different manufacturers' variances

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