4 Things to Know About SJOOW Extension Cords

SJOOW is the best jacket for extension cords used outdoors, in shops, or anywhere they’ll see abuse. For light indoor use, you probably don’t need it.

The letters tell you everything: S means service grade, J means junior (lighter duty), O means oil-resistant, and W means weather-resistant. So SJOOW is both oil- and weather-resistant.

SJOOW stays flexible in the cold, shrugs off oil and gas, and doesn’t crack after a few seasons in the sun. SJTW gets stiff, cracks faster, and degrades if dragged through motor oil.

For contractor jobs, garages, or dragging over concrete and sharp edges, SJOOW is worth the extra money. For Christmas lights or a living room lamp, SJTW is fine.