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Solid THHN/THWN-2 WireFrom $0.20/ft -
Solid THHN/THWN-2 WireFrom $0.20/ft - Solid THHN/THWN-2 WireFrom $0.20/ft
- Solid THHN/THWN-2 WireFrom $0.20/ft
Parent SKU : ALURDWB-35K-400-1/3
SKU : ALURDWB-35K-400-1/3-250
| Wire Size (AWG/MCM) | 400 MCM |
| Conductor Material | Aluminum |
| Conductor Type | Stranded |
| Outer Diameter (OD) (in/mm) | 1.89 in. / 48.00 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 | 1.624 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 400 MCM Aluminum is approximately 375 Amps when direct buried and 305 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 1.45 and 1.55 inches. For a single cable, a 3-inch conduit is the standard choice. For a triplex installation (three cables twisted together), a 4-inch conduit is recommended. Using a 4-inch pipe ensures you stay within the 40% fill limit and reduces the risk of jacket abrasion during the pull.
Even at 400 MCM, aluminum strands can act like a straw, pulling moisture deep into the cable through capillary action. This cable features swellable water-blocking agents that expand when they come into contact with water. This creates a physical dam that stops moisture from traveling down the length of the conductor, preventing "water treeing" and extending the service life of the 35kV insulation.
The 1/3 Neutral means the copper concentric wires provide a cross-sectional area equal to one-third of the 400 MCM aluminum phase conductor. This is the industry standard for three-phase utility systems where loads are relatively balanced. It provides a reliable grounding path and fault current capacity while keeping the cable lighter and more cost-effective than a full-neutral alternative.
To protect the high-voltage insulation and the semiconductive shields from mechanical damage, you must respect the following limits:
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