EXW Singapore — collect or forward from our Singapore office.

3G Electric
SOUTHWIRE 400 kcmil Stranded THHN/THWN-2 Building Wire, Black, 1,000 ft, 600 V - Copper THHN/THWN-2 Building Wires
SOUTHWIRECopper THHN/THWN-2 Building Wires

SOUTHWIRE 400 kcmil Stranded THHN/THWN-2 Building Wire, Black, 1,000 ft, 600 V

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
400 kcmil Stranded THHN/THWN-2 Building Wire, Black, 1,000 ft, 600 V
Part Number
20512001
Category
Copper THHN/THWN-2 Building Wires
Available to Order
Also known as:20512001SOUTHWIRE
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

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

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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
Industrial plant grounding — Southwire bare copper grounding wire, 4 AWG solid, 200 ft spool, for low-impedance earth connections.
Commercial branch-circuit wiring — Southwire XHHW/XHHW-2 building wire, 12 AWG stranded, 500 ft, for power distribution in conduit.
Temporary power distribution — Southwire inline GFCI cord, 30 A 240 V, L6-30P/L6-30R, for portable equipment protection.
Outdoor landscape lighting — Southwire landscape lighting wire, 14 AWG two-conductor, 500 ft, direct burial to fixtures.
Control panel bonding — Southwire bare copper wire, 10 AWG solid, 800 ft spool, for equipment grounding and bonding.
Feeder installation in cable tray — Southwire XHHW/XHHW-2 building wire, 10 AWG stranded, 500 ft, brown jacket, 600 V.
Not sure this is the right part? Photo-identify it→

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from SOUTHWIRE

View all SOUTHWIRE parts →
Single-conductor stranded copper building wire with THHN/THWN-2 insulation, rated 600 V. Suitable for general-purpose power distribution, lighting, and control circuits in conduit, raceway, or cable tray installations
SOUTHWIRE
Single-conductor stranded copper building wire with THHN/THWN-2 insulation, rated 600 V. Suitable for general-purpose power distribution, lighting, and control circuits in conduit, raceway, or cable tray installations
6 AWG stranded copper building wire with THHN/THWN-2 insulation, rated 600 V. Single conductor, orange jacket, supplied in 1000 ft length. Suitable for general-purpose wiring in conduit, raceway, and cable tray installations
SOUTHWIRE
6 AWG stranded copper building wire with THHN/THWN-2 insulation, rated 600 V. Single conductor, orange jacket, supplied in 1000 ft length. Suitable for general-purpose wiring in conduit, raceway, and cable tray installations
Single-conductor stranded copper building wire, 4 AWG, rated 600 V with THHN/THWN-2 insulation. Suitable for general-purpose wiring in conduit or raceway installations in commercial and industrial buildings. Blue color, 1000 ft length
SOUTHWIRE
Single-conductor stranded copper building wire, 4 AWG, rated 600 V with THHN/THWN-2 insulation. Suitable for general-purpose wiring in conduit or raceway installations in commercial and industrial buildings. Blue color, 1000 ft length
3 AWG stranded copper building wire with one conductor, rated 600 V. White THHN/THWN-2 insulation for dry and wet locations. Suitable for general-purpose power distribution, lighting, and control circuits in conduit, raceways, or cable trays
SOUTHWIRE
3 AWG stranded copper building wire with one conductor, rated 600 V. White THHN/THWN-2 insulation for dry and wet locations. Suitable for general-purpose power distribution, lighting, and control circuits in conduit, raceways, or cable trays
Single-conductor stranded copper building wire with THHN/THWN-2 insulation, rated 600 V. Suitable for general-purpose wiring in conduit or raceway systems in dry and wet locations. White color, 2 AWG, 1000 ft length
SOUTHWIRE
Single-conductor stranded copper building wire with THHN/THWN-2 insulation, rated 600 V. Suitable for general-purpose wiring in conduit or raceway systems in dry and wet locations. White color, 2 AWG, 1000 ft length
4 AWG stranded copper building wire rated for 600 V. THHN/THWN-2 construction suitable for dry and wet locations. Orange jacket, 1,000 ft length. Used for power distribution, lighting, and control circuits in conduit, raceway, or cable tray installations
SOUTHWIRE
4 AWG stranded copper building wire rated for 600 V. THHN/THWN-2 construction suitable for dry and wet locations. Orange jacket, 1,000 ft length. Used for power distribution, lighting, and control circuits in conduit, raceway, or cable tray installations

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first