Southwire 3/0BK-STR Single Building Wire, 3/0Blk-Str, THHN 225Amp

Southwire 3/0BK-STR Black Single Building Wire, 3/0Blk-Str, THHN 225Amp

The 20507001 Southwire 3/0BK‑STR Black Single Building Wire, THHN 225Amp is a high‑capacity building wire engineered for dependable electrical performance in residential, commercial, and industrial installations. With its THHN insulation and 225 amp rating, this black 3/0 AWG wire delivers strong conductivity and long‑lasting reliability for power distribution needs.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 20507001
• Brand: Southwire
• Product Type: Single Building Wire
• Size: 3/0 AWG
• Color: Black for easy identification and circuit designation
• Insulation: THHN (Thermoplastic High Heat‑Resistant Nylon) — suitable for dry and wet locations
• Ampacity: 225 amps (based on typical THHN/C insulation ratings)
• Voltage Rating: Typically 600 V for general building wiring
• Conductor: Stranded copper for flexibility and efficient current flow
• Application: Designed for use in conduit, cable trays, and general wiring systems

Ideal For

• Power distribution circuits requiring a high‑ampacity conductor
• Residential, commercial, and industrial wiring that demands durable, long‑lasting THHN wire
• Feeder or branch circuits in buildings with 3/0 AWG requirements
• Professional electricians and contractors needing reliable wiring for panel feeds
• Projects requiring black‑insulated wire for specific circuit identification or color coding

This robust 3/0 THHN wire gives you power capacity and versatility, whether you’re wiring a new structure or upgrading an existing system.