18gauge

18 gauge refers to a measurement of wire thickness. In the American Wire Gauge (AWG) system, a smaller gauge number indicates a thicker wire. Therefore, 18 gauge wire is relatively thin compared to lower gauge wires.

This specific gauge is commonly used in a variety of applications. Electrical wiring for appliances, low-voltage lighting systems, and speaker wire often utilize 18 gauge. Its balance of conductivity and flexibility makes it suitable for these purposes. It is also frequently found in crafting and jewelry making, particularly for jump rings and wire wrapping. In automotive applications, it can be used for accessory wiring.

The diameter of 18 gauge solid copper wire is approximately 0.0403 inches or 1.024 millimeters. The current carrying capacity, or ampacity, of 18 gauge wire varies depending on the insulation type and installation environment, but it is generally rated for a few amps, making it unsuitable for high-power applications. Its widespread availability and moderate electrical properties contribute to its popularity in numerous DIY and professional projects.