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SOUTHWIRE Building Wire: Copper, 400 kcmil, 1 Conductors, Stranded, Black, 1,000 ft Lg - Copper THHN/THWN-2 Building Wires
SOUTHWIRECopper THHN/THWN-2 Building Wires

SOUTHWIRE Building Wire: Copper, 400 kcmil, 1 Conductors, Stranded, Black, 1,000 ft Lg

The SOUTHWIRE Building Wire: Copper is a 400 kcmil, 1-conductor, stranded THHN/THWN-2 building wire in black, supplied in 1,000 ft lengths. It is rated for 600 V and carries the manufacturer part number 20512001.

SKU 3G-OTH-50462

Brand
SOUTHWIRE
Item
Building Wire: Copper, 400 kcmil, 1 Conductors, Stranded, Black, 1,000 ft Lg
Category
Copper THHN/THWN-2 Building Wires
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Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

SOUTHWIRE
Manufacturer Part Number
20512001
Type
400 kcmil, Stranded, Black, THHN/THWN-2
Lg
1,000 ft
Voltage
600 V
Conductors
1

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SOUTHWIRE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SOUTHWIRE Building Wire: Copper is a 400 kcmil, 1-conductor, stranded THHN/THWN-2 building wire in black, supplied in 1,000 ft lengths. It is rated for 600 V and carries the manufacturer part number 20512001.

Frequently Asked Questions

What is SOUTHWIRE 400 kcmil THHN/THWN-2 building wire used for?

This SOUTHWIRE 400 kcmil copper building wire is used for general-purpose power distribution in commercial and industrial facilities. It is suitable for conduit, raceway, and cable tray installations where a 600 V rating and THHN/THWN-2 insulation are required.

What are the specifications of SOUTHWIRE 20512001 building wire?

The SOUTHWIRE 20512001 is a 400 kcmil, 1-conductor, stranded copper building wire with THHN/THWN-2 insulation. It is rated for 600 V, comes in black, and is supplied in 1,000 ft lengths. The manufacturer part number is 20512001.

Where to buy SOUTHWIRE building wire in worldwide?

3G Electric supplies SOUTHWIRE building wire worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on the 20512001 400 kcmil THHN/THWN-2 wire.

How to select the right gauge for THHN/THWN-2 building wire?

Select the gauge based on the circuit's ampacity and voltage drop requirements. For a 400 kcmil conductor like this SOUTHWIRE wire, it is typically used for high-current feeders in 600 V systems. Always consult local electrical codes and a qualified engineer for proper sizing.

Used in

Common applications for SOUTHWIRE
Commercial construction — Southwire THHN/THWN-2 building wire (750 kcmil) for feeder circuits in conduit systems
Industrial maintenance — Southwire 8 AWG THHN/THWN-2 for motor branch circuits in wet locations
Outdoor job sites — Southwire 50 ft extension cord (12/3 SJTW, L5-20P) for powering 20 A equipment
Fixture wiring — Southwire 18 AWG TFFN wire for control panels and lighting fixtures in dry environments
Temporary power distribution — Southwire 25 ft extension cord (14/3 SJTW) for portable tools on construction sites
Workshop lighting — Southwire AL60CSW LED work light for high-bay illumination in maintenance bays

SOUTHWIRE Products

3G Electric supplies SOUTHWIRE copper thhn/thwn-2 building wires. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Building Wire: Copper, 500 kcmil, 1 Conductors, Stranded, Black, 1,000 ft Lg, THHN/THWN-2 (MPN 20513801)
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Building Wire: Copper, 4/0 AWG, 1 Conductors, Stranded, Black, 1,000 ft Lg, THHN/THWN-2 (MPN 20508801)
Building Wire: Copper, 2 AWG, 1 Conductors, Stranded, Black, 1,000 ft Lg, THHN/THWN-2 (MPN 20502102)
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Building Wire: Copper, 2 AWG, 1 Conductors, Stranded, Black, 1,000 ft Lg, THHN/THWN-2 (MPN 20502102)

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