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Parent SKU : ALURDWB-35K-4/0-1/3
SKU : ALURDWB-35K-4/0-1/3-250
"The primary trunk line for high-capacity utility grids—engineered with tree-retardant XLPE and dual-layer water blocking for maximum reliability in 35kV main feeder circuits."
The 4/0 AWG 35kV URD cable is the industry standard for main primary feeders in underground residential distribution (URD). Designed to carry the bulk load from the substation to local distribution points, this cable is built for high-ampacity performance and extreme environmental durability.
Dual-Layer Water Block Protection: Engineered to eliminate the risk of "water treeing," this cable features a water-blocking compound within the conductor strands and specialized moisture protection in the neutral layer to prevent longitudinal water migration.
Tree-Retardant XLPE (TR-XLPE): Featuring a 345-mil layer of high-dielectric TR-XLPE insulation, this cable provides superior resistance to the electrochemical stressors found in damp underground environments, significantly extending the system's life cycle.
1/3 Concentric Neutral: Utilizing 11 x #14 AWG annealed bare copper wires, the 1/3 neutral configuration offers the necessary grounding and fault-path capacity for heavy main-trunk loads while maintaining cost-efficiency.
High-Strength 1350-H19 Aluminum: The hard-drawn aluminum core is designed to withstand the massive mechanical tension required to pull heavy-gauge 4/0 cable through long primary duct banks.
Main Primary Feeders: The "backbone" of the underground grid, carrying power from the substation to residential subdivisions.
Industrial Main Service: Delivering high-ampacity 35kV power to large manufacturing plants, data centers, and hospitals.
Renewable Energy Trunks: Serving as the main collector cable for utility-scale solar and wind farm infrastructure.
ENGINEERING OVERVIEW: 4/0 AWG MAIN TRUNK DISTRIBUTION The 4/0 AWG 35kV URD cable is an excellent choice for primary distribution requiring maximum current-carrying capacity. With a robust nominal outer diameter of approximately 1.69", this cable is engineered for the rigors of direct burial or duct installation in environments where long-term moisture and soil acidity resistance are non-negotiable.
APPLICATION: Aluminum Conductor MV-105 35kV water-blocked URD cable is primarily used for primary underground power distribution. It is suitable for use in wet or dry locations, installed in underground ducts or via direct burial.
CONDUCTORS: 4/0 AWG Compact or compressed aluminum 1350-H19 in Class B stranding.
CONDUCTOR WATER BLOCK: Interstitial spaces between conductor strands are filled with a water-blocking compound to prevent moisture migration.
INSULATION: TR-XLPE (Tree-Retardant Cross-Linked Polyethylene) in 100% insulation level (345 Mils).
CONCENTRIC NEUTRAL WATER BLOCK: Semi-conducting water-swellable tape over the insulation shield or water-swellable powder between the concentric neutral strands.
CONCENTRIC NEUTRAL: 11 x #14 AWG Annealed bare copper wires (1/3 neutral conductivity).
JACKET: Sunlight resistant XLPE, black with three red stripes for easy high-voltage phase identification.
INDUSTRY STANDARDS & COMPLIANCE:
UL 1072: Listed as Type MV-105
ICEA S-94-649: Concentric Neutral Cables Rated 5 through 46kV
AEIC CS8: Shielded Power Cables Rated 5 through 46kV
Temperature Ratings: 105°C (Normal), 140°C (Emergency), 250°C (Short Circuit)
CABLE MARKING: PRIORITY WIRE AL TR-XLPE 35KV 100% INSUL LEVEL 345 MILS (UL) E364254 TYPE MV-105 XLPE WB SUN RES.
Technical Note: All values are nominal and subject to industry tolerances and manufacturer corrections. Specifications are subject to change without notice. It is the buyer’s responsibility to verify that all materials meet the specific requirements of the project and comply with local electrical codes.
| Wire Size (AWG/MCM) | 4/0 |
| Conductor Material | Aluminum |
| Conductor Type | Stranded |
| Outer Diameter (OD) (in/mm) | 1.69 in. / 42.93 mm |
| Jacket Type | XLPE |
| Conductor Count | 1 |
| Shield | Shielded |
| Insulation Type | TR-XLPE |
| UL Listing Numbers | UL 1072 |
| Voltage Rating | 35kV |
| Direct Burial Rating | Yes |
| Submersible | No |
| Sunlight Resistance Rating | Yes |
| Temperature Rating | 105ºC |
| Standards | ASTM B230 Aluminum 1350–H19 Wire for Electrical Purposes ASTM B231 Concentric-Lay-Stranded Aluminum 1350 Conductors ASTM B400 Compact Round Concentric-Lay-Stranded Aluminum 1350 Conductors ASTM B3 Soft or Annealed Copper Wire UL 1072 Medium-Voltage Power Cables ICEA S-94-649 Concentric Neutral Cables Rated 5 Through 46KV AEIC CS8 Extruded Dielectric, Shielded Power Cables Rated 5 Through 46KV For 105°C continuous, 140°C emergency overload and 250°C short-circuit operation |
| Miscellaneous Information | All values are nominal and subject to correction. |
| Weight per Foot | 1.153 lb |
In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.
You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.
Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).
You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.
Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.
Orders on any items with a material value of $50 or less are non-returnable.
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Physical Specifications
Technical Specifications
Packaging & Dimensions:
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Under standard conditions (90°C conductor, 20°C earth temperature, and 90 RHO soil resistivity), the ampacity for 4/0 AWG Aluminum is approximately 260 Amps when direct buried and 215 Amps when installed in an underground duct.
⚠️ CUSTOMER WARNING: Actual ampacity must be calculated based on your specific project conditions, including soil thermal resistivity (RHO), burial depth, duct bank configuration, and load factor per NEC Article 311. Consult a licensed electrical engineer for final system design.
The approximate outside diameter for this cable is between 1.10 and 1.20 inches. For a single cable, a 2-inch conduit is typical. For a triplex installation (three cables twisted together), a 3-inch or 3.5-inch conduit is recommended. Using a 3.5-inch conduit is often preferred for longer pulls to ensure you stay well within the 40% fill limit, reducing friction and the risk of damaging the cable's outer jacket.
Even in the 4/0 size, stranded aluminum conductors can allow moisture to travel long distances through capillary action. This cable features swellable water-blocking agents that expand when exposed to moisture, creating a physical dam within the conductor. This is a critical defense against "water treeing," a process where moisture migrates into the 35kV insulation and creates microscopic, tree-like fractures that eventually lead to a catastrophic electrical blowout.
The 1/3 Neutral indicates that the copper concentric wires provide a total cross-sectional area equal to one-third of the 4/0 aluminum phase conductor. This is a standard utility configuration for three-phase primary distribution. It provides a reliable return path for fault current and grounding while keeping the cable diameter smaller and the weight lighter than a full-neutral alternative, making it significantly easier to pull and terminate.
To protect the integrity of the 345-mil insulation and the internal semiconductive shields, you must adhere to the following limits:
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