25ga

25ga, short for 25-gauge, is a designation used in gauge systems to describe material thickness or diameter, most commonly encountered in sheet metal and electrical wiring. The exact meaning of 25ga depends on the context and the material standard being used, and there is no single universal value.

In sheet metal work, 25 gauge refers to a very thin sheet. The thickness associated with 25 gauge varies by metal type (such as steel, stainless steel, or aluminum) and by the gauge standard in use. Because different industries and countries use slightly different gauge charts, the same gauge number can correspond to different actual thicknesses. In practice, technicians consult the specific gauge chart for the material and standard being specified to determine the exact thickness.

In electrical and electronics contexts, 25ga usually denotes AWG 25, a small-diameter copper conductor used for signal wiring, prototyping, and delicate electronics. It has a relatively high resistance per unit length and limited current-carrying capacity compared with thicker wires, making it suitable for low-power and fine-detail work rather than power distribution. Insulation types vary and may include PVC, enamel-coated, or silicone-coated variants depending on application.

Because gauge values are material- and standard-dependent, it is important to reference the appropriate chart or datasheet for precise thicknesses or diameters when specifying 25ga in a project.