Extension Cord Gauge: 16 vs 14 vs 12 AWG Explained
Learn how 16, 14, and 12 AWG extension cords differ, and why amp draw, cord length, ratings, and intended use all matter.
Guides to extension cords, cord gauge, surge protectors, power strips, generator cords, and basic electrical buying decisions for home and garage use.

Learn how 16, 14, and 12 AWG extension cords differ, and why amp draw, cord length, ratings, and intended use all matter.

Those letters printed down an extension cord are not random. Here is what S, SJ, T, O, OO, and W mean, how to identify outdoor-use cords, and why gauge alone does not tell you where a cord belongs.