"Engineered for maximum power capacity and tough underground environments, 350 MCM 3-Conductor Direct Burial Aluminum MC Cable delivers complete feeder protection without the added labor or expense of installing underground conduit.
This heavy-duty cable features three 350 MCM compact-stranded aluminum phase conductors and one #2 AWG aluminum bare ground conductor, protected by an interlocked aluminum armor and covered in a rugged, moisture-proof, UV-resistant PVC outer jacket. Fully approved per NEC Article 330 for direct earth burial, wet locations, and cable tray applications, it is the ultimate cost-effective solution for 250A commercial service distribution, industrial subpanels, and heavy utility power runs."
Key Features & Benefits: 350 MCM-3C Direct Burial Alum MC Cable + Ground
Direct Burial Approved (No Conduit Required): The extruded PVC outer jacket isolates the interlocked aluminum armor from moisture, soil chemicals, and ground rot, allowing you to lay cable directly into open trenches.
High-Capacity 350 MCM Layout: Features three 350 MCM phase conductors and one #2 AWG bare ground—ideal for commercial main service entrances, large industrial subpanels, and heavy-amp machinery feeds.
Compact Stranded AA-8000 Aluminum: Built with lightweight AA-8000 series aluminum alloy that reduces overall cable diameter, making it easier to pull through tight bends without sacrificing ampacity.
Superior Mechanical Armor: The flexible interlocked aluminum armor shields internal wires from soil shifts, sharp rocks, crushed backfill, and physical impacts during installation.
Sunlight & Flame Resistant: Designed to handle direct exposure to sunlight, wet locations, and indoor/outdoor transitions seamlessly.
Technical Specifications: 350 MCM 3 Conductor Direct Burial Alum MC Cable
Conductor Size: 350 MCM (kcmil)
Number of Power Conductors: 3
Conductor Material: AA-8000 Series Compact Stranded Aluminum Alloy
Ground Wire Size: 2AWG Bare Aluminum
Phase Colors: Black, White, Red
Insulation Type: XLPE / XHHW-2
Armor Type: AIA (Aluminum Interlocked Armor)
Protective Outer Jacket: PVC - Black (Sunlight & Moisture Resistant)
Voltage Rating: 600 Volts
Temperature Rating: -40°C to 90°C
Amp Rating (@ 75°C - NEC): 250 Amps
Amp Rating (@ 90°C - NEC): 280 Amps
Insulation Thickness: 0.065 inches
Jacket Thickness: 0.060 inches
Approximate Nominal Outer Diameter: 2.15 inches
Approximate Net Weight: 1,826 lbs per 1,000 ft
Minimum Bending Radius: 15.05 inches (Calculated as 7x Diameter Over Jacket)
Compliance Standards: UL 44, UL 1569 (Type MC), NEMA WC70 / ICEA S-95-658, IEEE 1202, ASTM B800 & B801, NEC 518.4, NEC 520.5, NEC 645.5, and NEC 300.22.
Common 350 MCM-3 Alum MC Cable PVC Jacket Applications
Main Commercial Feeders & Subpanels: Delivering high-capacity power from utility disconnects to 250A–300A commercial distribution boards and industrial subpanels.
Industrial & Utility Facility Power: Routing heavy 3-phase power across manufacturing facilities, chemical plants, wastewater facilities, and industrial job sites.
Underground Distribution: Running direct-buried main feeders between separate commercial buildings, agricultural complexes, and heavy machinery workshops.
Ordering & Fulfillment
Cut to Length: Sold by the foot or in master reels to match your exact trench footprint and minimize scrap.
Fast Processing: Ships directly from closest regional distribution hubs to guarantee minimal transit times and reduced freight costs.
Submittal Assistance: Need cut sheets or manufacturer technical data sheets for engineering approval? Call our sales team directly at 833-268-8644 for immediate jobsite support.
Technical Note: To prevent structural degradation from galvanic corrosion, installers must utilize dual-rated AL7CU or AL9CU mechanical compression lugs or mechanical split-bolts when joining this aluminum cable to copper busbars or breaker terminals. Penetrox or similar antioxidant joint compound must be thoroughly applied to all bare aluminum conductors before final structural torquing. While the PVC jacket isolates the interior armor against direct soil or chemical contact, minimum trench depth profiles must strictly comply with NEC Article 300.5 tables (typically requiring 24 inches of earth cover for direct-buried cables not under concrete paths, or 18 inches beneath standard structural landscapes).
DISCLAIMER: The technical information provided is for general reference only. Large-scale high-voltage feeder systems and underground distribution paths must strictly adhere to the National Electrical Code (NEC), local electrical building enforcement, and relevant safety parameters. Always cross-reference the official product submittal data sheet from the chosen manufacturer prior to finalizing structural configurations or executing structural cuts.