Aluminum Generator Cable, 2/0-3C w/ Ground + 18/9C, 135 Amps, 26kW-28kW, 600V

2/0 AWG 3-Conductor Aluminum Generator Cable with Ground and 18 AWG 9-Conductor Control Bundle is a specialized, all-in-one power and intelligence composite cable engineered for standby home generators and light commercial backup systems. Designed to streamline complex multi-conduit runs into a single pulling operation, this dual-rated line is optimized to support 26kW to 28kW generator units, supplying up to 135 Amps of continuous emergency load capacity under a maximum 600V operating threshold.

This heavy-duty hybrid asset combines raw electrical power distribution with low-voltage system logic inside a rugged, sunlight-resistant, direct-burial polyvinyl chloride (PVC) outer jacket. The power core features three robust 2/0 AWG compact-stranded aluminum conductors accompanied by an insulated aluminum ground. Nestled alongside this main power run is a built-in 18 AWG 9-conductor control cable wiring harness, providing the necessary paths for automated utility sensing, battery charging, and generator command intelligence without requiring a separate layout pipe.

ELECTRICAL AMPACITY & GENERATOR RUN RATINGS

Engineered to match the high-demand continuous loads of automated emergency standby equipment, this composite cable features distinct power limits based on insulation parameters and structural cooling boundaries:

• Maximum Current Capacity (75°C Terminations): 135 AMPS

  This rating complies with National Electrical Code (NEC) Article 310 parameters for Type THHN/THWN-2 aluminum conductors terminated into standard 75°C equipment lugs.

• Power Output Handling Range: 26 kW to 28 kW

  Optimized explicitly for single-phase 240V residential generator applications, providing safe mechanical and thermal headroom during cold starts and sudden utility transfer load spikes.

Key Features

• All-In-One Unified Design: Combines heavy aluminum power conductors and a multi-conductor copper control bundle within a single outer jacket, slashing trench labor, minimizing conduit jam scenarios, and eliminating multiple pipe runs.

• Compact-Stranded AA-8000 Aluminum Alloy: Power conductors are extruded using advanced AA-8000 series aluminum alloy, providing excellent flexibility, reduced cable weight, and highly reliable connections at standard equipment lugs.

• Integrated 18/9C Copper Control Core: Features a dedicated 9-conductor, 18 AWG copper signaling bundle that provides smooth transmission for automated automatic transfer switch (ATS) communication, smart digital monitoring, oil pressure sensors, and float chargers.

• Dual-Rated THHN / THWN-2 Elements: Internal power lines are insulated with tough polyvinyl chloride (PVC) and topped with a slick nylon armor skin, rated for dry environments up to 90°C and wet subterranean environments up to 75°C.

• Direct-Burial Outer Armor Jacket: Protected by an industrial-grade, sunlight-resistant, moisture-impervious PVC outer shield. This jacket allows the cable to be run inside standard PVC conduit, heavy metal raceways, or laid directly into open underground trenches where code permits.

Common Applications

• Automated Standby Generator Connections: Linking 26kW through 28kW residential and light industrial generators safely to their respective Automatic Transfer Switches (ATS).

• Whole-House Backup Infrastructure: Running high-amperage backup links for estate homes, rural agricultural facilities, and critical municipal pump sites.

• Multi-Zone ATS Communication Paths: Providing the unified power feed and remote-start signaling circuit between isolated generator docks and internal building sub-panels.

Cable Component Architecture (Cross-Section)

1. Main Power Elements: 3 independent 2/0 AWG compact-stranded aluminum conductors.

2. Equipment Ground: 1 insulated matching aluminum ground wire.

3. Control Bundle: 9 independent 18 AWG solid or stranded copper control lines enclosed in an inner protective binder wrap.

4. Outer Jacket: Rugged, moisture-proof, UV-resistant Black PVC outer skin.

Technical Specifications

• Power Conductor Size: 2/0 AWG

• Number of Power Conductors: 3 (Typically designated Black, Red, White for Single-Phase 120/240V systems)

• Power Conductor Material: AA-8000 Series Aluminum Alloy

• Ground Conductor Size: Fully sized aluminum ground

• Control Bundle Configuration: 18 AWG / 9-Conductor (Copper)

• Voltage Rating: 600 Volts Maximum

• Continuous Current Capacity: 135 Amps (Based on 75°C termination limits)

• Insulation Type: PVC with Nylon Skin (THHN / THWN-2)

• Jacket Type: Polyvinyl Chloride (PVC) - Sunlight Resistant, Direct Burial Rated

• Compliance Standards: UL Listed, NEC Article 310, NEC Article 445 (Generators), RoHS Compliant

Technical Note: To prevent localized oxidation and terminal failures over time, all aluminum-to-copper transitions or connections at the generator terminal blocks must be coated with a certified anti-oxidant joint compound (such as Noalox or Penetrox). Tighten all mechanical terminal lugs strictly to the manufacturer's specified inch-pounds of torque using a calibrated torque wrench.

CABLE TYPE: 2/0-3C Aluminum Power with Ground + 18 AWG 9-Conductor Copper Control Composite Generator Cable (600V Rated)

DISCLAIMER: The technical information provided is for general reference only. Emergency standby generator systems and automatic utility transfer switches must strictly adhere to NFPA 70 (National Electrical Code), local utility company parameters, and the specific manufacturer’s wiring schematics. Always cross-reference the official engineering data sheet and local structural code books prior to pulling cable lengths or finalizing backup power hookups.

⚠️ 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.

Common 2/0-3C w/ Ground + 18/9C Generator Cable Use Cases

• Standby Generator Power Integration: Functions as the primary all-in-one feeder cable connecting large residential or commercial standby generators (rated 26kW to 28kW) straight to automatic transfer switches (ATS).
• Smart Control & Power Consolidation: Houses both the heavy-duty 2/0 AWG power conductors and an integrated 18 AWG 9-conductor control bundle within a single jacket, eliminating the need to run separate control wires for battery charging, sensors, and utility sensing signals.
• Whole-House Backup Infrastructure: Supplies up to 135 Amps of continuous 600V power to manage total household loads, including multiple central HVAC units, electric water heaters, and heavy appliances during utility grid outages.
• Trenching and Conduit Installation: Engineered to be pulled efficiently through Schedule 40 or Schedule 80 PVC conduit networks from an outdoor generator pad into a basement or garage electrical room.
• Commercial Standby Systems: Deployed in light commercial properties, medical clinics, and agricultural facilities to maintain continuous operation of critical infrastructure, cooling systems, and security panels.

Who Relies on 2/0-3C w/ Ground + 18/9C Generator Cable?

Target Industries

• Residential & Commercial Standby Power: Used extensively by specialized generator installation companies handling premium, high-kilowatt whole-home backup systems.
• Electrical Contracting & Construction: Integrated into new high-end home builds and light commercial properties designed with built-in auxiliary emergency power grids.
• Property Management & Facilities: Implemented during facility upgrades to ensure automatic, seamless transition to emergency backup power without signal latency between the generator and the smart transfer switch.

Core Professionals & Buyers

• Certified Generator Installers & Electricians: Field crews who specify this composite cable because it cuts installation time in half by allowing power and control circuits to be trenched and pulled in a single run.
• Electrical Project Estimators: Procurement specialists tracking installation overhead who leverage lightweight aluminum power conductors to significantly reduce material shipping and labor costs compared to heavy copper equivalents.
• Home Builders & Developers: Decision-makers who require code-compliant, dual-purpose cable solutions that pass local electrical inspections on the first inspection without wiring mix-ups.
• Electrical Inspectors: Regulatory professionals who verify compliance with 600V insulation safety requirements and correct ampacity ratings for continuous generator duty cycles.

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.