“The professional standard for 150-amp feeders and main service entrancesengineered with dual-rated THHN/THWN-2 insulation and a friction-reducing nylon jacket for maximum reliability in 600V applications.”

Why Electricians Choose 1/0 AWG THHN/THWN-2 Copper

The 1/0 AWG copper building wire is a high-amperage conductor designed for demanding electrical environments. It is the primary choice for 150-amp residential services, commercial HVAC chillers, and industrial power distribution. The stranded construction is non-negotiable at this size, providing the flexibility required to navigate the large radius bends of 2-inch conduits and land securely in heavy-duty mechanical lugs.

• Dual Rated (THHN/THWN-2): Engineered for dry locations up to 90C (THHN) and wet locations (THWN-2), providing maximum versatility for indoor and outdoor conduits.

• Tough PVC/Nylon Jacket: The high-heat and moisture-resistant PVC insulation is protected by a tough, friction-reducing Nylon outer sheath, making for easier pulls through tight bends.

• High-Conductivity Copper: Manufactured with soft-annealed stranded copper to provide maximum flexibility and superior electrical conductivity for branch circuits and feeders.

• Oil & Gasoline Resistant: The specialized jacket is designed to resist chemical degradation, making it ideal for industrial environments and service station wiring.

Common 1/0 THHN/THWN-2 Applications

• 150-Amp Sub-Panels: The definitive choice for 150A feeders in large residential estates and commercial buildings.

• Commercial Main Services: Used in parallel sets for high-amperage commercial service entrances.

• Data Center Power: Providing high-conductivity feeders for server rack power distribution units (PDUs).

• Industrial Weld Stations: Ideal for high-duty cycle industrial welding equipment.

• Large EV Charging Hubs: Powering multi-car Level 2 charging banks or DC fast-charging stations.

Technical Specifications

ENGINEERING OVERVIEW: 1/0 AWG STR 600V

• APPLICATION: Main service entrance conductors, large feeders, and industrial power distribution.

• VOLTAGE: Rated for 600 Volts.

• CONDUCTORS: Stranded soft-annealed copper.

• INSULATION: Heat and moisture-resistant PVC (Polyvinyl Chloride).

• JACKET: Tough, abrasion-resistant Nylon.

• TEMPERATURE: 90C Dry (THHN), 90C Wet (THWN-2).

• Ampacity: 150 amps at 75C | 170 amps at 90C

Technical Note: All values are nominal and subject to industry tolerances and manufacturer corrections. Specifications are subject to change without notice. It is the buyers responsibility to verify that all materials meet the specific requirements of the project and comply with local electrical codes.