20-gauge wire is a type of electrical wire that is commonly used in various applications, including electronics and home wiring. The "gauge" refers to the thickness of the wire, with a lower number indicating a thicker wire. A 20-gauge wire has a diameter of approximately 0.032 inches (0.812 mm), making it relatively thin compared to other gauges. This wire is often used for low-voltage applications, such as in hobby electronics and lighting fixtures. It is flexible and easy to work with, making it suitable for projects that require intricate wiring. However, it is important to consider the wire's current-carrying capacity to ensure safety and efficiency.