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Parent SKU : RST-4URD
SKU : RST-4URD-100
"The industry standard for high-capacity secondary power distribution. Rated for 600V and designed for both direct burial and conduit applications, the Rust Quadruplex features rugged XLP insulation for superior moisture resistance and long-term durability in the most demanding underground environments."
The Rust 250 MCM Quadruplex is engineered for large-scale power distribution where high ampacity and cost-efficiency are critical. This 250 MCM Aluminum cable utilizes high-conductivity 1350-H19 aluminum. Its XLPE (Cross-Linked Polyethylene) insulation provides a massive advantage over standard PVC, offering superior resistance to heat, chemicals, and mechanical stress, ensuring your infrastructure remains stable for decades.
High-Ampacity Power: Designed for major secondary distribution where smaller gauges would suffer from excessive voltage drop or overheating.
Sunlight-Resistant XLPE: Advanced cross-linked polyethylene insulation prevents premature aging caused by UV exposure at termination points.
Easy-Identify Neutral: For faster installation and safer maintenance, the 3/0 AWG neutral conductor features three extruded yellow stripes.
Direct Burial Ready: Specifically built for the harsh conditions of underground utility distribution; can be installed directly in the earth or within conduit systems.
ENGINEERING OVERVIEW: 250 250 250 3/0 Quadruplex URDÂ
Application: Secondary distribution circuits, underground service entrances, and high-amp sub-panels.
Voltage Rating: 600 Volts.
UL Listing: UL 854 (Service-Entrance Cable).
Conductor Material: Concentric stranded 1350-H19 series aluminum.
Phase Insulation: Black sunlight-resistant XLP (Cross-Linked Polyethylene).
Neutral Insulation: Black XLP with 3 extruded yellow stripes for easy identification.
Temperature Rating: 90°C (Wet or Dry).
Phase Conductor Size: 250 MCM (kcmil).
Neutral Conductor Size: 3/0 AWG (Reduced Neutral).
Outside Diameter (OD): 1.81 inches (45.974 mm)
Ampacity (Direct Burial): 320 Amps.
Ampacity (In Duct/Conduit): 250 Amps.
Weight:Â 1.215 lbs/ft
Compliance Standards: UL 854; Type USE-2; ASTM B-231, B-609, B-901.
Multi-Family Residential Main Feeders: The primary choice for running underground power from a utility transformer to the main distribution centers of apartment complexes and condominium buildings.
Commercial Building Service Entrances: Ideal for medium-to-large retail centers, office buildings, and restaurants.
Industrial Sub-Panels: Frequently used as a feeder to provide secondary power to heavy machinery clusters, large air compressor banks, or specialized manufacturing zones within an industrial plant.
Large Agricultural Distribution: The standard for high-capacity farm infrastructure, such as powering large grain dryers, irrigation pumping stations, and climate-controlled livestock facilities.
Data Centers & Server Rooms: Reliable for secondary power distribution in tech facilities where high-load, continuous operation is the baseline.
Community Infrastructure: Perfect for powering shared amenities like community clubhouses, large public pool facilities, and sports field lighting complexes.
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.
Ampacity: 90°C conductor temperature, 20°C ambient temperature, RHO 90, 100% load factor. Single and Quadruplex based on 3/C. Neutral wire carries unbalanced load only. Reference NEC article 310.15 for NEC installations.
Â
| Wire Size (AWG/MCM) | 250 MCM |
| Conductor Material | Aluminum |
| Conductor Type | Stranded |
| Strand Count | 19 |
| Outer Diameter (OD) (in/mm) | 1.81 in. / 45.974 mm |
| Jacket Type | XLPE |
| Conductor Count | 4 |
| Shield | Unshielded |
| Insulation Type | (XLPE) Cross-Linked Polyethylene |
| Voltage Rating | 600 |
| Ampacity Rating | 320 |
| Direct Burial Rating | Yes |
| Submersible | No |
| Flexibility Rating | Low |
| Sunlight Resistance Rating | Yes |
| Temperature Rating | 90ºC |
| Standards | ASTM B-230 Aluminum 1350-H19 Wire for Electrical Purposes ASTM B-231 Concentric-Lay-Stranded Aluminum 1350 Conductors ASTM B-609 Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes ASTM B-901 Compressed Round Stranded Aluminum Conductors Using Single Input Wire Construction ICEA S-105-692 600 Volt Single Layer Thermoset Insulated Utility Underground Distribution Cables Federal Specification A-A-59544A UL 854 Service-Entrance Cables Sunlight Resistant RUS Accepted |
| Miscellaneous Information | All values are nominal and subject to correction. *Not RUS accepted size **Ampacity: 90°C conductor temperature, 20°C ambient temperature, RHO 90, 100% load factor. Single and Quadruplex based on 3/C. Neutral wire carries unbalanced load only. Reference NEC article 310.15 for NEC installations. |
| Primary Applications | Underground Secondary Power Distribution |
| Common Uses |
|
| Weight per Foot | 1.215 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 : RST-4URD
SKU : RST-4URD-100
Parent SKU : RST-4URD
SKU : RST-4URD-100
"The industry standard for high-capacity secondary power distribution. Rated for 600V and designed for both direct burial and conduit applications, the Rust Quadruplex features rugged XLP insulation for superior moisture resistance and long-term durability in the most demanding underground environments."
The Rust 250 MCM Quadruplex is engineered for large-scale power distribution where high ampacity and cost-efficiency are critical. This 250 MCM Aluminum cable utilizes high-conductivity 1350-H19 aluminum. Its XLPE (Cross-Linked Polyethylene) insulation provides a massive advantage over standard PVC, offering superior resistance to heat, chemicals, and mechanical stress, ensuring your infrastructure remains stable for decades.
High-Ampacity Power: Designed for major secondary distribution where smaller gauges would suffer from excessive voltage drop or overheating.
Sunlight-Resistant XLPE: Advanced cross-linked polyethylene insulation prevents premature aging caused by UV exposure at termination points.
Easy-Identify Neutral: For faster installation and safer maintenance, the 3/0 AWG neutral conductor features three extruded yellow stripes.
Direct Burial Ready: Specifically built for the harsh conditions of underground utility distribution; can be installed directly in the earth or within conduit systems.
ENGINEERING OVERVIEW: 250 250 250 3/0 Quadruplex URDÂ
Application: Secondary distribution circuits, underground service entrances, and high-amp sub-panels.
Voltage Rating: 600 Volts.
UL Listing: UL 854 (Service-Entrance Cable).
Conductor Material: Concentric stranded 1350-H19 series aluminum.
Phase Insulation: Black sunlight-resistant XLP (Cross-Linked Polyethylene).
Neutral Insulation: Black XLP with 3 extruded yellow stripes for easy identification.
Temperature Rating: 90°C (Wet or Dry).
Phase Conductor Size: 250 MCM (kcmil).
Neutral Conductor Size: 3/0 AWG (Reduced Neutral).
Outside Diameter (OD): 1.81 inches (45.974 mm)
Ampacity (Direct Burial): 320 Amps.
Ampacity (In Duct/Conduit): 250 Amps.
Weight:Â 1.215 lbs/ft
Compliance Standards: UL 854; Type USE-2; ASTM B-231, B-609, B-901.
Multi-Family Residential Main Feeders: The primary choice for running underground power from a utility transformer to the main distribution centers of apartment complexes and condominium buildings.
Commercial Building Service Entrances: Ideal for medium-to-large retail centers, office buildings, and restaurants.
Industrial Sub-Panels: Frequently used as a feeder to provide secondary power to heavy machinery clusters, large air compressor banks, or specialized manufacturing zones within an industrial plant.
Large Agricultural Distribution: The standard for high-capacity farm infrastructure, such as powering large grain dryers, irrigation pumping stations, and climate-controlled livestock facilities.
Data Centers & Server Rooms: Reliable for secondary power distribution in tech facilities where high-load, continuous operation is the baseline.
Community Infrastructure: Perfect for powering shared amenities like community clubhouses, large public pool facilities, and sports field lighting complexes.
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.
Ampacity: 90°C conductor temperature, 20°C ambient temperature, RHO 90, 100% load factor. Single and Quadruplex based on 3/C. Neutral wire carries unbalanced load only. Reference NEC article 310.15 for NEC installations.
Â
| Wire Size (AWG/MCM) | 250 MCM |
| Conductor Material | Aluminum |
| Conductor Type | Stranded |
| Strand Count | 19 |
| Outer Diameter (OD) (in/mm) | 1.81 in. / 45.974 mm |
| Jacket Type | XLPE |
| Conductor Count | 4 |
| Shield | Unshielded |
| Insulation Type | (XLPE) Cross-Linked Polyethylene |
| Voltage Rating | 600 |
| Ampacity Rating | 320 |
| Direct Burial Rating | Yes |
| Submersible | No |
| Flexibility Rating | Low |
| Sunlight Resistance Rating | Yes |
| Temperature Rating | 90ºC |
| Standards | ASTM B-230 Aluminum 1350-H19 Wire for Electrical Purposes ASTM B-231 Concentric-Lay-Stranded Aluminum 1350 Conductors ASTM B-609 Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes ASTM B-901 Compressed Round Stranded Aluminum Conductors Using Single Input Wire Construction ICEA S-105-692 600 Volt Single Layer Thermoset Insulated Utility Underground Distribution Cables Federal Specification A-A-59544A UL 854 Service-Entrance Cables Sunlight Resistant RUS Accepted |
| Miscellaneous Information | All values are nominal and subject to correction. *Not RUS accepted size **Ampacity: 90°C conductor temperature, 20°C ambient temperature, RHO 90, 100% load factor. Single and Quadruplex based on 3/C. Neutral wire carries unbalanced load only. Reference NEC article 310.15 for NEC installations. |
| Primary Applications | Underground Secondary Power Distribution |
| Common Uses |
|
| Weight per Foot | 1.215 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
Usage & Installation:
Packaging & Dimensions:
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Note: These ratings are based on 90°C conductor temperature and standard ambient conditions. Always consult with a licensed electrical engineer and reference NEC Article 310.15 for project-specific calculations.
URD stands for Underground Residential Distribution. It is a category of electrical cable specifically engineered for direct burial in the earth. Unlike standard indoor wire, URD is built with rugged XLPE (Cross-Linked Polyethylene) insulation that is chemically designed to resist moisture, soil acids, and mechanical pressure without needing a protective outer jacket or conduit.
Yes. 250 MCM Quadruplex is a Type USE-2 cable specifically designed for direct burial. The XLPE insulation is formulated to resist moisture, soil chemicals, and mechanical stress, though conduit is often preferred at this size for added physical protection and ease of future maintenance.
Yes. While designed for underground use, the insulation is UV-rated. This is vital for the portions of the cable that emerge from the ground to enter a meter socket or transformer cabinet.
Absolutely. 250 MCM URD is the industry standard for secondary feeders in apartment complexes and large residential developments. It provides the necessary amperage to feed multiple meter banks from a central utility transformer.
By using a 3/0 neutral instead of a full 250 MCM neutral, the cable becomes slightly smaller, lighter, and more cost-effective. This is ideal for 3-phase systems where the load is relatively balanced, as the neutral only carries the unbalanced portion of the current.
Aluminum URD is the industry standard for underground utility feeds because it is significantly more cost-effective and lighter than copper. At the 250 MCM size, aluminum provides the necessary ampacity for large residential and commercial feeds at a fraction of the cost of copper.
With a nominal OD of 1.81 inches, this cable requires significant space for a safe pull:
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