5 Key Differences Between SOOW and SJTW Extension Cords

SJTW is for light-duty temporary use Standard orange or yellow cords found at hardware stores. Fine for power tools, yard equipment, or Christmas lights.

SOOW is for heavy-duty industrial use Rubber jacket resists oil, chemicals, and physical abuse. Common on construction sites and in garages.

The “T” in SJTW means thermoplastic insulation Cheaper material that gets stiff and cracks in cold weather. Not meant for permanent outdoor exposure.

The “O” in SOOW means oil-resistant rubber jacket Stays flexible in freezing temperatures and withstands dragging, stepping on, and long-term outdoor use.

Wire gauge matters more than the letters Lower AWG number means thicker wire and more power capacity. Choose gauge first, then decide between SJTW or SOOW based on expected abuse.