Best 4/0 Triplex Direct Burial Cables for URD Projects
This guide highlights top 4/0 triplex direct burial cables commonly used in underground residential distribution (URD) and similar applications. Each product emphasizes conductor count, insulation, and overall diameter to help engineers, electricians, and facility planners compare options for durable, buried installations. The selections below focus on aluminum URD triplex configurations, rated for direct burial, and crafted for reliable underground service life.
| Product | Length | Conductor Count | Insulation | OD |
|---|---|---|---|---|
| Nassau Electrical Supply 100′ Sweetbriar Triplex Aluminum Cable URD Direct Burial 4/0-4/0-2/0 | 100 ft | 3 | 80 mils | 1.389 in |
| Nassau Electrical Supply 200′ Sweetbriar Aluminum URD 4/0 4/0 2/0 Cable Wire Direct Burial Triplex | 200 ft | 3 | 80 mils | 1.389 in |
| Nassau Electrical Supply 50′ Sweetbriar Triplex Aluminum Cable URD Direct Burial 4/0-4/0-2/0 | 50 ft | 3 | 80 mils | 1.389 in |
| 300′ 4-4-4 Vassar Aluminum URD Triplex Direct Burial | 300 ft | 3 | Insulation Wall | 60 mils |
| NASSAU ELECTRICAL SUPPLY 250′ Monmouth 4/0 4/0 4/0 Aluminum URD Triplex Cable Direct Burial Wire 600 Volt | 250 ft | 3 | Not specified | Not specified |
Nassau Electrical Supply 100′ Sweetbriar Triplex Aluminum URD Direct Burial
Product: Nassau Electrical Supply 100′ Sweetbriar Triplex Aluminum Cable URD Direct Burial 4/0-4/0-2/0
Brand: Nassau Electrical Supply
Conductor configuration: Three conductors in a triplex layout
Insulation: 80 mils thick; overall diameter 1.389 inches
Notes: Suitable for direct burial URD installations, with aluminum conductors designed for underground service life.
Nassau Electrical Supply 200′ Sweetbriar Aluminum URD 4/0 4/0 2/0 Cable
Product: Nassau Electrical Supply 200′ Sweetbriar Aluminum URD 4/0 4/0 2/0 Cable Wire Direct Burial Triplex
Brand: Nassau Electrical Supply
Conductor configuration: 3 conductors in a triplex arrangement
Insulation: 80 mils; OD about 1.389 inches
Notes: Designed for direct burial URD installations with robust insulation and a compact cross-section for easier trenching and pulling.
Nassau Electrical Supply 50′ Sweetbriar Triplex Aluminum URD Direct Burial Cable
Product: Nassau Electrical Supply 50′ Sweetbriar Triplex Aluminum Cable URD Direct Burial 4/0-4/0-2/0
Brand: Nassau Electrical Supply
Conductor configuration: 3 conductors in triplex layout
Insulation: 80 mils; OD 1.389 inches
Notes: Shorter length option suitable for branch or service drops within URD networks, maintaining burial durability.
300′ 4-4-4 Vassar Aluminum URD Triplex Direct Burial
Product: 300′ 4-4-4 Vassar Aluminum URD Triplex Direct Burial
Brand: Nassau Electrical Supply (Vassar line)
Conductor configuration: 3 conductors; Gauge 4 AWG; OD nominal 60 mils insulation wall
Notes: A longer direct burial option with a defined insulation wall for added protection in underground runs; suitable for URD applications.
NASSAU ELECTRICAL SUPPLY 250′ Monmouth 4/0 4/0 4/0 URD Triplex
Product: NASSAU ELECTRICAL SUPPLY 250′ Monmouth 4/0 4/0 4/0 Aluminum URD Triplex Cable Direct Burial Wire 600 Volt
Brand: Nassau Electrical Supply
Conductor configuration: 3 x 4/0 AWG; neutral 4/0 AWG
Insulation: Not specified; typical URD insulation for direct burial; weight and structural attributes tuned for long underground runs
Notes: Large-diameter, high-capacity URD cable suited for substantial underground feeders; engineers should verify impedance and voltage drop for specific installations.
Nassau Electrical Supply 150′ Monmouth 4/0-4/0-4/0 URD Triplex
Product: Nassau Electrical Supply 150′ Monmouth 4/0-4/0-4/0 Aluminum URD Triplex Cable
Brand: Nassau Electrical Supply
Conductor configuration: Phase 4/0; Neutral 4/0; 3-phase arrangement compatibility
Insulation: 95 mils typical insulation thickness for high-capacity URD runs
Notes: A versatile option for larger URD systems; suitability depends on trenching, burial depth, and voltage requirements.
Nassau Electrical Supply 150′ 350-350-4/0 350 MCM Wesleyan Triplex
Product: Nassau Electrical Supply 150′ 350-350-4/0 350 MCM Wesleyan Triplex Aluminum URD Direct Burial Cable USE
Brand: Nassau Electrical Supply
Conductor configuration: Phase AWG 350; Stranding 37/w; Insulation thickness 95 mils
Notes: Extremely large cross-section option for high-demand URD feeders; verify compatibility with equipment enclosures and trenching constraints.
Nassau Electrical Supply 350-350-4/0 350 MCM Wesleyan Triplex
Product: Nassau Electrical Supply 350-350-4/0 350 MCM Wesleyan Triplex Aluminum URD Direct Burial Cable USE
Brand: Nassau Electrical Supply
Conductor configuration: 350 MCM phase; 37-strand; insulation thickness 95 mils
Notes: High-capacity option for large underground feeders; plan for pull tensions and trench coordination during installation.
Buying Guide
Key considerations when selecting 4/0 triplex direct burial URD cable include conductor material, insulation thickness, outer diameter, and trenching practicality. Aluminum conductors offer cost savings and ease of installation, but verify mechanical strength and voltage ratings for the intended system. Insulation thickness affects burial depth, moisture resistance, and heat dissipation. Diameter affects pull force, conduit compatibility, and trench width. For longer runs, confirm sag, impedance, and voltage drop at the system’s operating voltage. Check local codes and utility specifications for burial depth, jacket material, and marking requirements. Consider spare lengths and supplier reliability to minimize on-site delays.
Additional perspectives include:
- Technical compatibility: Ensure phase and neutral sizing align with the system design, especially for multi-conductor URD configurations.
- Installation practicality: Shorter lengths reduce waste but may require more joints; plan for splices that maintain insulation integrity.
- Environmental factors: Soil moisture, temperature extremes, and abrasion influence century-long performance of buried cables.
- Lifecycle considerations: Availability of spare stock, future expansion, and end-of-life recycling potential.