4-4-4-4 Quadruplex Aluminum URD Direct Burial Cable (Tulsa)

“The industry-standard forsecondary three-phase residential, farm, and commercial power distribution. Engineered for reliable 600V delivery, this cable is rated for both direct burial and duct installations, featuring sunlight-resistant XLP insulation for robust, long-term underground performance.”

Why Electricians Choose Tulsa 4-4-4-4 Quadruplex Aluminum URD

The Tulsa 4-4-4-4 URD cable is the versatile solution for secondary underground three-phase power distribution. Specifically designed for applications requiring three phase conductors and a neutral, it provides a stable, high-performance solution for light commercial services, multi-family residential projects, and agricultural power. By utilizing high-conductivity 1350-H19 aluminum and a heavy-duty, sunlight-resistant XLP insulation, it offers superior resistance to environmental degradation, moisture ingress, and thermal stress.

• 600V Reliability: Rated for continuous operation in wet or dry locations at temperatures up to 90C, providing dependable power for 3-phase equipment.

• Sunlight-Resistant XLP: Advanced cross-linked polyethylene insulation prevents premature aging caused by UV exposure at termination points.

• Easy-Identify Neutral: For faster installation and safer maintenance, the neutral conductor features three extruded yellow stripes.

• Direct Burial Ready: Specifically built for the harsh conditions of underground utility distribution; can be installed directly in the earth or within conduit/duct systems.

Technical Specifications: Tulsa 4-4-4-4 URD

ENGINEERING OVERVIEW: 4-4-4-4 Quadruplex URD

• Application: Designed for use in secondary distribution circuitswhere installed in duct or direct burial applications.

• Voltage Rating: 600 Volts.

• UL Listing: UL 854 (Service-Entrance Cable).

• Conductor Material: Concentric stranded 1350-H19 series aluminum.

• Phase Insulation: Black sunlight-resistant XLP (Cross-Linked Polyethylene).

• Neutral Insulation: Black XLP with 3 extruded yellow stripes for easy identification.

• Temperature Rating: 90C (Wet or Dry).

• Cable Outer Diameter: 0.83 inches (21.082 mm)

• Ampacity (Direct Burial): 120 Amps.

• Ampacity (In Duct): 85 Amps.

• Compliance Standards: UL 854; Type USE-2; RUS Accepted; ASTM B-230, B-231, B-609, B-901; ICEA S-105-692.

Common 4-4-4-4 Tulsa Quadruplex Applications

• Three-Phase Service Entrance: The standard feeder for small commercial buildings or multi-family units requiring a 120/208V or 277/480V three-phase secondary service.

• Small Industrial & Workshop Power: Ideal for powering three-phase motors, air compressors, and specialized machinery in detached workshops or agricultural facilities.

• Commercial Site Lighting: A rugged and cost-effective solution for underground power distribution to parking lot light poles and exterior security lighting circuits.

• Agricultural Infrastructure: Frequently used for powering irrigation control systems and small-scale barn equipment where three-phase power is available.

• Direct Burial or Conduit: Extremely versatile and easy to handle; can be installed directly in a trench for residential projects or pulled through conduit for commercial site developments.

Technical Note:All values are nominal and subject to industry tolerances and manufacturer corrections. Specifications are subject to change without notice. It is the buyers responsibility to verify that all materials meet the specific requirements of the project and comply with local electrical codes.

Ampacity: 90C conductor temperature, 20C ambient temperature, RHO 90, 100% load factor. Single and Quadruplex based on 3/C. Neutral wire carries unbalanced load only. Reference NEC article 310.15 for NEC installations.