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Home Electrical Rough Electrical Electrical Wire SJ Cord 20308-66-03 SERVICE CORD SJTW 12/3 250FT

20308-66-03 SERVICE CORD SJTW 12/3 250FT

PART 735493
SUPPLIER COLEMAN CABLE CORDS
SUPPLIER PART # 203086603
RANK B
SHELF PACK 1
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About this item

20308‑66‑03 Service Cord – SJTW 12/3, 250 ft

The 20308‑66‑03 Service Cord (SJTW 12/3, 250 ft) is a heavy‑duty, flexible power cable designed for demanding indoor and outdoor service applications. Built with three 12‑gauge conductors and a robust SJTW thermoplastic jacket, this cord is engineered to deliver dependable power while withstanding everyday wear, moisture exposure, and varying environmental conditions commonly encountered on jobsites, workshops, and temporary installations.

Supplied on a 250‑foot continuous spool, this service cord offers the length and versatility required for large projects, custom cord assemblies, and multi‑run installations. The flexible jacket allows for easy handling, coiling, and routing, even in cooler temperatures, while maintaining durability and resistance to abrasion.

Designed to meet contractor and industrial expectations, the 20308‑66‑03 service cord is a reliable solution for building extension cords, powering equipment, and supporting temporary electrical setups where performance and durability are essential.

Key Features

  • Heavy‑duty SJTW construction for indoor and outdoor service use
  • 12‑gauge conductors designed for reliable power delivery
  • Three‑conductor (12/3) configuration supports grounded applications
  • Flexible thermoplastic jacket for easier handling and routing
  • Resistant to abrasion, moisture, and everyday jobsite wear
  • Supplied on a 250‑foot continuous spool for large or multiple projects
  • Well suited for custom cord assemblies and extension cord fabrication

Specifications

  • Product Number: 20308‑66‑03
  • Product Type: Service cord
  • Cord Type: SJTW
  • Wire Gauge: 12 AWG
  • Number of Conductors: 3 (12/3)
  • Cord Length: 250 feet
  • Jacket Material: Thermoplastic
  • Flexibility Rating: Suitable for repeated handling and coiling
  • Intended Use: Indoor and outdoor service applications

Manufacturer‑Recommended Applications

The 20308‑66‑03 SJTW service cord is designed for a wide range of power and service uses, including:

  • Fabrication of heavy‑duty extension cords
  • Temporary power distribution setups
  • Powering tools and equipment in workshops and garages
  • Jobsite and maintenance applications
  • Replacement or upgrade of existing service cords
  • Indoor and outdoor electrical service needs

Durability & Performance

This service cord is engineered to balance strength and flexibility, making it reliable for frequent handling and demanding use environments. The SJTW jacket helps protect internal conductors from moisture and surface damage while maintaining the flexibility needed for efficient installation and storage.

Installation & Handling

The 250‑foot spool format allows for smooth payout and precise length cuts, helping reduce waste and streamline installations. The cord is easy to coil and store when not in use, supporting cleaner and more organized worksites. Installation and use should follow applicable electrical codes and manufacturer recommendations.

Ideal For

  • Contractors and electricians
  • Maintenance and facilities teams
  • Workshops and garages
  • Jobsite and temporary power applications
  • Custom cord and extension cord fabrication

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Color Orange
Brand Coleman
Amperage 20A
Conductor Material Copper
Conductor Size 12 AWG
Conductor Type SJTW
Country of Origin Code United States of America
Insulation Material Terrapene
Jacket Material PVC
Length 250'
Manufacturer Description 250' 12/3 SJTW WIRE
Number of Conductors 3
Package Quantity 1
Type SJTW
UL Listed Yes
Voltage 300V
Wire Length 250'
Wire Size (AWG) 12 AWG
Wire Type SJTW
UPC Code 029892217938
Shelf Pack 1
Minimum Order Qty 1
Supplier Name Coleman Cable Cords
Supplier Short Name Coleman Ca
Supplier Address 1 PO Box 933091
Supplier City Atlanta
Supplier State GA
Supplier Zip 31193-3091
Country US
Supplier Email scollins@salesgroupsouth.com
Supplier Url www.colemancable.com
Buyer Name Michael Heck
Supplier Phone (800) 323- 9355
Supplier Fax (847) 689-9433
Return Policy Return to Wallace
Product Lines Electrical Cords
Rep Name Sam Collins
Rep Address Maria Robinson @ Sales Group
Rep Phone (888) 603-6858
Rep Cell (205) 349-9131
Rep Fax (800) 690-7996
Rep Email scollins@salesgroupsouth.com
Rep Agency Sales Group South