From $0.20/ft
128 Products
-
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 : ALURD-15K-250
SKU : ALURD-15K-250-250
"The high-capacity primary feeder standard for heavy utility loads—engineered with 133% TR-XLPE insulation and water-blocked conductors for maximum reliability in large-scale underground distribution."
The 250 MCM aluminum cable is designed for main distribution feeders requiring significantly higher ampacity than standard 4/0 AWG. With its 133% insulation level (220 mils), it provides a rugged safety margin for critical infrastructure and high-load commercial circuits.
Water-Blocked Stranded Conductors: This cable features compressed concentric stranded 1350 series aluminum with interstitial spaces filled with a water-blocking compound. This stops longitudinal moisture migration if the cable's integrity is ever compromised.
133% TR-XLPE Insulation: Naturally high dielectric strength Tree-Retardant XLPE insulation resists the formation of "water trees," significantly extending the service life of underground infrastructure in wet environments.
Full Concentric Neutral: Featuring 16 x #10 AWG solid bare copper wires, this 250 MCM cable provides a 100% neutral capacity, ensuring maximum grounding safety and return current capability for high-ampacity systems.
Durable LLDPE Jacket: The black Linear Low-Density Polyethylene jacket is sunlight, abrasion, and heat resistant, marked with the NESC lightning bolt and sequential footage markings for easy field identification.
Main Utility Feeders: Used as the primary supply "trunk" for large residential developments and industrial parks.
High-Load Commercial Service: Providing 15kV primary power to hospitals, data centers, and large-scale manufacturing facilities.
Substation Exit Feeders: Ideal for routing primary power away from substations into the distribution grid where 250 MCM capacity is required.
ENGINEERING OVERVIEW: 250 MCM 133% PRIMARY
APPLICATION: Primarily used for underground distribution, in direct burial or installed in conduit in wet or dry locations.
VOLTAGE: Rated for 15,000 volts or less.
CONDUCTORS: 250 MCM compressed concentric stranded 1350 series aluminum; stranded conductors are water-blocked.
INSULATION: 220 mils of TR-XLPE (Tree-Retardant Cross-Linked Polyethylene) at 133% insulation level.
CONCENTRIC NEUTRAL: 16 x #10 AWG solid bare copper wires helically applied (Full Neutral).
JACKET: Black LLDPE with three red stripes and NESC lightning bolt.
WEIGHT: Approximately 1,315 lbs/kft.
OVERALL DIAMETER: 1.46 inches.
INDUSTRY STANDARDS & COMPLIANCE:
UL Listed: Type MV-90
Standards: ANSI/ICEA S-94-649, AEIC CS-8, and ASTM B230/B231/B609
RUS ACCEPTED
Temperature Ratings: 90°C Normal, 130°C Emergency, 250°C Short Circuit
Â
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.
Â
| Wire Size (AWG/MCM) | 250 MCM |
| Conductor Material | Aluminum |
| Conductor Type | Stranded |
| Strand Count | 37 |
| Outer Diameter (OD) (in/mm) | 1.46 in. / 37.08 mm |
| Jacket Type | LLDPE |
| Conductor Count | 1 |
| Shield | Shielded |
| Insulation Type | TR-XLPE |
| UL Listing Numbers | UL - MV90 |
| Voltage Rating | 15kV |
| Direct Burial Rating | Yes |
| Sunlight Resistance Rating | Yes |
| Temperature Rating | 90ºC |
| Standards | ASTM B230, B231, B609 ANSI/ICEA S-94-649 UL - MV90 AEIC CS-8 RUS ACCEPTED For 90°C continuous, 130°C emergency and 250°C shortcircuit operation |
| Miscellaneous Information | All values are nominal and subject to correction. |
| Weight per Foot | 1.315 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.
Parent SKU : ALURD-15K-250
SKU : ALURD-15K-250-250
Parent SKU : ALURD-15K-250
SKU : ALURD-15K-250-250
"The high-capacity primary feeder standard for heavy utility loads—engineered with 133% TR-XLPE insulation and water-blocked conductors for maximum reliability in large-scale underground distribution."
The 250 MCM aluminum cable is designed for main distribution feeders requiring significantly higher ampacity than standard 4/0 AWG. With its 133% insulation level (220 mils), it provides a rugged safety margin for critical infrastructure and high-load commercial circuits.
Water-Blocked Stranded Conductors: This cable features compressed concentric stranded 1350 series aluminum with interstitial spaces filled with a water-blocking compound. This stops longitudinal moisture migration if the cable's integrity is ever compromised.
133% TR-XLPE Insulation: Naturally high dielectric strength Tree-Retardant XLPE insulation resists the formation of "water trees," significantly extending the service life of underground infrastructure in wet environments.
Full Concentric Neutral: Featuring 16 x #10 AWG solid bare copper wires, this 250 MCM cable provides a 100% neutral capacity, ensuring maximum grounding safety and return current capability for high-ampacity systems.
Durable LLDPE Jacket: The black Linear Low-Density Polyethylene jacket is sunlight, abrasion, and heat resistant, marked with the NESC lightning bolt and sequential footage markings for easy field identification.
Main Utility Feeders: Used as the primary supply "trunk" for large residential developments and industrial parks.
High-Load Commercial Service: Providing 15kV primary power to hospitals, data centers, and large-scale manufacturing facilities.
Substation Exit Feeders: Ideal for routing primary power away from substations into the distribution grid where 250 MCM capacity is required.
ENGINEERING OVERVIEW: 250 MCM 133% PRIMARY
APPLICATION: Primarily used for underground distribution, in direct burial or installed in conduit in wet or dry locations.
VOLTAGE: Rated for 15,000 volts or less.
CONDUCTORS: 250 MCM compressed concentric stranded 1350 series aluminum; stranded conductors are water-blocked.
INSULATION: 220 mils of TR-XLPE (Tree-Retardant Cross-Linked Polyethylene) at 133% insulation level.
CONCENTRIC NEUTRAL: 16 x #10 AWG solid bare copper wires helically applied (Full Neutral).
JACKET: Black LLDPE with three red stripes and NESC lightning bolt.
WEIGHT: Approximately 1,315 lbs/kft.
OVERALL DIAMETER: 1.46 inches.
INDUSTRY STANDARDS & COMPLIANCE:
UL Listed: Type MV-90
Standards: ANSI/ICEA S-94-649, AEIC CS-8, and ASTM B230/B231/B609
RUS ACCEPTED
Temperature Ratings: 90°C Normal, 130°C Emergency, 250°C Short Circuit
Â
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.
Â
| Wire Size (AWG/MCM) | 250 MCM |
| Conductor Material | Aluminum |
| Conductor Type | Stranded |
| Strand Count | 37 |
| Outer Diameter (OD) (in/mm) | 1.46 in. / 37.08 mm |
| Jacket Type | LLDPE |
| Conductor Count | 1 |
| Shield | Shielded |
| Insulation Type | TR-XLPE |
| UL Listing Numbers | UL - MV90 |
| Voltage Rating | 15kV |
| Direct Burial Rating | Yes |
| Sunlight Resistance Rating | Yes |
| Temperature Rating | 90ºC |
| Standards | ASTM B230, B231, B609 ANSI/ICEA S-94-649 UL - MV90 AEIC CS-8 RUS ACCEPTED For 90°C continuous, 130°C emergency and 250°C shortcircuit operation |
| Miscellaneous Information | All values are nominal and subject to correction. |
| Weight per Foot | 1.315 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.
Get notified when this product is back in stock
Physical Specifications
Technical Specifications
Packaging & Dimensions:
|
||||||||||||||||||||||||||||||||||
The overall jacket diameter for 250 MCM 15kV 133% URD is 1.46 inches. For a single-conductor installation, a 3-inch conduit is standard. For a triplex configuration (three cables), a 5-inch conduit is recommended. Due to the 1.46" OD, a 4-inch conduit would be a very tight pull for a triplex; a 5-inch conduit ensures you stay within the NEC 40% fill limit and prevents cable damage from excessive pulling tension.
Note on Conduit Sizing: These recommendations are based on standard NEC 40% fill guidelines for general informational purposes. Because factors such as pull length, total degrees of bends, and pulling tension vary by project, always consult with a licensed electrical engineer or project lead to verify final conduit specifications and ensure local code compliance.
This 250 MCM cable features 16 x #10 AWG solid bare copper neutral wires. These wires are helically applied and uniformly spaced over the insulation shield to provide 100% (Full) conductivity relative to the 250 MCM aluminum phase conductor, providing maximum grounding performance for high-load primary feeders.
RUS Accepted means this cable meets the technical and durability standards set by the Rural Utilities Service (USDA). This is a critical requirement for contractors working on federally funded rural electrification projects, ensuring the cable is vetted for long-term reliability in utility-grade infrastructure.
For 250 MCM main feeders, 133% insulation (220 mils) provides a critical safety buffer. Larger feeders often carry higher loads and may be subject to longer fault-clearing times; the extra TR-XLPE thickness ensures the system can withstand surge stresses significantly better than standard 100% rated cables.
The minimum bending radius for 250 MCM 15kV URD is approximately 17.5 inches. Per industry standards, the radius is calculated as 12 times the overall diameter of the cable (1.46" x 12). Maintaining this radius is vital during the installation of heavy 250 MCM feeders to protect the core and concentric neutrals from mechanical stress.
(833) 268-8644
Get this thing filled up so you can help Wire America!