Meet the Southwire 18/3 SJOW 300 V 250 ft. L Service Cord—the long, reliable solution for on‑the‑job power where you need it most. Designed to fringe the line between temporary power and proven durability, this cord brings steadiness to the most demanding work sites with a practical spool packaging that eases handling and setup.
Key advantages that set it apart
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Spool packaging for on‑site practicality—pull exactly the length you need and minimize waste and tangles. The spool format keeps the cord organized between jobs and reduces wasteful leftovers.
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18/3 SJOW with rubber insulation—flexible, abrasion‑resistant, and capable of withstanding rough handling on the job. The rubber insulation is built to endure the rigors of real work environments.
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Un grounded 3‑conductor design—suitable for tools and equipment that don’t require a ground conductor, offering the right balance of length, flexibility, and performance for specific temporary power needs.
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300 V rating and 10 A maximum amperage—supports common power tools and lighting setups, delivering up to 3,000 W when paired with an appropriate power source.
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Long reach—250 ft length—provides expansive coverage across job sites, enabling safer placement of generators, power distribution, and equipment without excessive reel changes.
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UL Listed for assured safety and compliance, giving you confidence when deploying this cord on professional projects.
Specifications at a glance
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Conductor arrangement: 18/3 SJOW
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Insulation material: Rubber
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Voltage rating: 300 V
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Maximum amperage: 10 A
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Maximum wattage: 3,000 W
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Length: 250 ft
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Grounding: Un grounded (no ground conductor)
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Packaging: Spool
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Listings: UL Listed
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Minimum operating temperature: -4 (as specified)
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Country/brand: Southwire
Ideal use cases
This service cord is purpose-built for temporary power needs where a long reach and reliable performance matter. Use it to:
- Power portable tools and lighting on construction sites, workshops, and rental setups
- Provide flexible power routing for events, staging, and outdoor work areas where longer extension is beneficial
- Extend generator output to distant equipment without compromising cord robustness or safety
Practical considerations and tips
- Since this is an un grounded cord, avoid connecting equipment that requires a grounding path to operate safely.
- Store on the spool between jobs to preserve the rubber insulation’s integrity and prevent kinking or cracking.
- Inspect the cord before use for any cuts, nicks, or wear—replace if the insulation is damaged to maintain performance and safety.
- Match your load to the cord’s 10 A maximum to prevent overheating and ensure efficient operation of connected devices.
Choose the Southwire 18/3 SJOW 300 V 250 ft. L Service Cord for a purpose-built, long‑reach power solution that combines practical on‑site handling with the durability professionals rely on. While it’s designed for temporary power needs, its UL listing and rugged rubber construction provide confidence when you’re powering tools, lights, or other equipment during long workdays.
