4 AWG Diesel Locomotive Cable, 2000V

4 AWG Diesel Locomotive Cable (DLO) is an extra-flexible 2000V single-conductor industrial power cable engineered for heavy feeder runs, main generator leads, battery interconnects, and high-vibration industrial power distribution. Constructed with finely stranded tinned copper, heavy-duty EPR insulation, and a pressure-extruded Chlorinated Polyethylene (CPE) jacket, it delivers maximum flexibility, vibration resistance, and chemical protection for 140-amp power circuits.

Dual-rated as Type RHH/RHW-2 (600V and 2000V) under UL 44, this cable handles dynamic equipment movement while remaining fully code-compliant for permanent conduits, raceways, and machinery installations.

Key Features & Benefits

• Corrosion-Resistant Tinned Copper: Built with high-strand tinned annealed copper (ASTM B-33/B-172) to prevent conductor oxidation, ensure long-lasting terminations, and provide superior flexibility for tight enclosure bends.

• Premium EPR Insulation: Thermoset Ethylene Propylene Rubber (EPR) insulation delivers excellent dielectric strength, handling continuous 2000V electrical loads without thermal breakdown, cracking, or softening.

• Ultra-Rugged CPE Outer Jacket: Heavy-duty Black Chlorinated Polyethylene (CPE) thermosetting compound provides extreme resistance to oil, grease, petrochemical solvents, ozone, weather, and continuous UV exposure.

• Dual-Rated Compliance: Certified as 2kV DLO for flexible machinery leads and dual-rated as 600V/2000V RHH/RHW-2 under UL 44.

• Sub-Zero Cold Flexibility: Rated for -40°C low-temperature flexibility, preventing jacket cracking or stiffening during dynamic payouts and cold-weather pulls.

• Code-Compliant Industrial Build: Preferred by electrical contractors, utility solar EPCs, and plant engineers requiring dual UL 44 RHH/RHW-2 ratings and MSHA flame compliance.

• Custom Cut-to-Length: Wire America supplies 4 AWG DLO cable cut by the foot with zero cut fees, saving you material waste and jobsite prep time.

Technical Specifications

• Conductor Size: 4 AWG

• Conductor Stranding: 105 Strands of 24 AWG (105/#24)

• Conductor Material: Tinned Annealed Copper

• Insulation Material: Premium Ethylene Propylene Rubber (EPR)

• Jacket Material: Heavy-Duty Black Chlorinated Polyethylene (CPE)

• Voltage Rating: 2000V (DLO) / 600V & 2000V (Type RHH/RHW-2) / 1000V (CSA RW90)

• Ampacity: 140 Amps (Single conductor in free air @ 90°C conductor temp, 30°C ambient per NEC Table 310.17)

• Nominal Outer Diameter: Approx. 0.424" (Range: 0.408" min – 0.461" max)

• Approximate Net Weight: ~188 lbs / 1,000 ft (280 kg/km)

• Temperature Rating: -40°C to +90°C (Continuous Wet or Dry)

• Minimum Bending Radius: 4 x OD (1.70" for Fixed Installation) / 6 x OD (2.54" for Flexible Application)

• Compliance Standards: UL Listed Type RHW-2 (UL 44), c(UL) RW90 EP 1kV, MSHA Approved (P-7K-268080-01), VW-1 Flame Test, AAR RP-586 / RP-588, RoHS Compliant.

Common Applications

• Industrial Motor & Generator Leads: Serving as flexible high-current feeder links on manufacturing motors, conveyor networks, and mobile generator sets.

• Oil and Gas Drilling Rigs: Powering auxiliary pumps, localized control enclosures, and marine drilling platform systems.

• Data Centers & Battery Backup Banks: Connecting intermediate Uninterruptible Power Supply (UPS) networks, commercial energy storage arrays, and high-voltage backup battery setups.

• Telecommunications Power Plants: Providing localized low-voltage drop, high-amperage DC power distribution lines inside central switching hubs.

• Diesel-Electric Locomotive Infrastructure: Supplying auxiliary power links, traction system controls, and transit car grids.

TECHNICAL & CODE COMPLIANCE NOTICE: Product specifications, outer dimensions, stranding layouts, and weight figures are nominal manufacturer estimates based on industry standards and are subject to normal manufacturing tolerances. Ampacity ratings are derived from National Electrical Code (NEC®) Table 310.17 for single conductors in free air at 30°C ambient and 90°C continuous conductor operation. Final cable selection, conduit fill sizing, and installation methods must be verified by a qualified engineer or licensed electrician in accordance with local building regulations and the latest NEC standards.

• Locomotive Cabinet & Auxiliary Connections: Transfers high-voltage current to dynamic braking grids, ventilation blowers, and main control panels from the diesel generator plant.
• Industrial Motor Control Centers: Functions as heavy-duty, high-flexibility jumper wiring inside industrial switchgear, circuit breakers, and sub-panel motor controls (MCC).
• Oil & Gas Rig Power Distribution: Deployed across onshore and offshore drilling platforms to supply 2000V electrical power to top drives, drawworks, high-pressure mud pumps, and heavy-duty distribution panels.
• Data Center UPS & Battery Bank Connections: Serves as high-flexibility, high-ampacity battery jumper and distribution cabling within uninterruptible power supply (UPS) rooms and telecommunications central offices.
• Ship-to-Shore Marine Power Systems: Used extensively by maritime facilities and shipyard contractors as rugged shore-power cables to safely supply large vessels with electricity while docked.
• Mining Machinery Operations & Articulations: Routes raw power to electric shovels, draglines, conveyor networks, and continuous miners operating under high vibration and mechanical stress in open-pit or deep-earth mines.

Who Relies on 4 AWG DLO 2000V?

Target Industries

• Railroad & Transit Engineering Infrastructure: Selected by regional rail authorities and locomotive maintenance yards for complete rolling stock overhauls and equipment retrofits.
• Industrial Manufacturing & Automated Assembly: Integrated into heavy fabrication facilities, steel mills, and automotive assembly plants requiring resilient, flexible power feeds.
• Petrochemical & Marine Energy Production: Heavily utilized by marine contractors and oilfield service companies operating in aggressive, high-vibration, and corrosive environments.
• Enterprise Cloud & Infrastructure Technology: Implemented across massive data center campuses to link emergency generator backups and high-capacity battery storage banks.

Core Professionals & Buyers

• Industrial & Rig Electricians: Field technicians who choose 4 AWG Diesel Locomotive Cable (DLO) for its exceptionally fine Class I tinned copper stranding (105/24 configuration), which allows a thick power cable to maneuver tight layout bends with ease.
• Data Center Facility Infrastructure Engineers: Managers who specify DLO because its premium Ethylene Propylene Rubber (EPR) insulation provides superior 2000V dielectric protection and heat resistance.
• Industrial Project Estimators & Procurement Officers: Buyers who track long-term maintenance cycles and rely on the rugged Chlorinated Polyethylene (CPE) jacket to resist oils, acids, solvents, and ozone without cracking.
• Safety & Mine Inspectors (MSHA/UL): Regulatory field officers who verify Dual-Rated RHH/RHW-2 attributes and MSHA flame-retardant listings for safe deployment in hazardous locations and open cable trays.

⚠️ The applications listed below are for informational and educational purposes only. Electrical code requirements vary significantly by region. Always consult a licensed electrician and your local building authority to verify compliance with the National Electrical Code (NEC®) for your specific project before purchasing or installing cable.

General Shipping Information

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 Shipping

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).

Returns

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.