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Parent SKU : ALURDWB-35K-3/0-1/3
SKU : ALURDWB-35K-3/0-1/3-250
"High-capacity primary distribution—engineered with tree-retardant XLPE and advanced dual-layer water blocking for maximum grid reliability in 35kV underground feeder circuits."
The 3/0 35kV URD cable is a high-performance conductor designed for medium-to-large primary underground distribution systems. It offers a significant increase in current-carrying capacity for utility loops that serve high-density residential areas or light industrial complexes.
Dual-Layer Water Block Protection: To combat the primary cause of underground cable failure, this cable features a specialized water-blocking compound in the conductor strands and water-swellable powder in the neutral, sealing the cable against longitudinal moisture migration.
Tree-Retardant XLPE (TR-XLPE): The 345-mil insulation layer is comprised of high-dielectric TR-XLPE. This material is specifically designed to inhibit the formation of "water trees," ensuring the cable remains electrically stable even in saturated or poorly drained soils.
1/3 Concentric Neutral: Featuring 9 x #14 AWG annealed bare copper wires, the 1/3 neutral configuration provides efficient grounding and fault-current return for balanced utility systems while maintaining a manageable cable weight.
Aluminum 1350 Class B Stranding: The hard-drawn aluminum core provides the high tensile strength required for long-distance pulls through industrial conduits and high-friction bends.
Primary Feeder Circuits: Used as a mid-tier feeder to distribute power from substations to local distribution points.
High-Density Residential Loops: Providing primary power to large apartment complexes or multi-family housing developments.
Commercial Industrial Parks: Delivering reliable 35kV service to facilities with higher-than-average power demands.
ENGINEERING OVERVIEW: 3/0 AWG MID-TRUNK DISTRIBUTION The 3/0 AWG 35kV URD cable is optimized for primary distribution applications requiring robust ampacity and long-term environmental resistance. With a nominal outer diameter of approximately 1.63", this cable is engineered for durability in direct burial or duct installations where protection against soil-borne chemicals and moisture is paramount.
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: 3/0 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: 9 x #14 AWG Annealed bare copper wires (1/3 neutral conductivity).
CONCENTRIC NEUTRAL WATER BLOCK:
Semi-conducting water swellable tape over the insulation shield or water-swellable powder between the concentric neutral strands
JACKET: Sunlight resistant XLPE, black with three red stripes.
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) | 3/0 |
| Conductor Material | Aluminum |
| Conductor Type | Stranded |
| Outer Diameter (OD) (in/mm) | 1.63 in. / 41.40 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. Non-stock item available for order |
| Weight per Foot | 1.048 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 3/0 AWG Aluminum is approximately 225 Amps when direct buried and 190 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 1.05 and 1.15 inches. For a single cable, a 2-inch conduit is standard. For a triplex installation (three cables twisted together), a 2.5-inch or 3-inch conduit is recommended. Using a 3-inch pipe is often the safer choice for longer pulls to ensure the fill ratio remains well below the 40% limit, protecting the cable jacket from high pulling tension.
In underground distribution, moisture can enter the cable through accidental punctures or at termination points. This cable utilizes swellable water-blocking agents within the conductor strands that expand upon contact with water. This creates a physical dam that prevents moisture from "wicking" or traveling longitudinally down the conductor. This feature is critical for preventing "water treeing," a process that degrades 35kV insulation and eventually leads to a dielectric blowout.
The 1/3 Neutral means the copper concentric wires provide a total cross-sectional area equal to one-third of the 3/0 aluminum phase conductor. This is the industry-standard design for three-phase primary distribution. It provides a reliable return path for fault current and grounding while keeping the cable profile smaller and more flexible than a full-neutral cable. This makes the 3/0 size particularly easy to handle in standard utility transformers and switchgear.
To protect the high-voltage insulation and the semiconductive shielding layers from mechanical damage, you must adhere to the following limits:
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