Also known as an 18 American Wire Gauge (AWG) size wire cord, an 18awg 2-prong power cord consists of two conductors each with a diameter of 18 AWG. It is commonly used for light to medium duty applications like radios, laptops and small appliances. In other words, the 18AWG rating means that it can safely carry certain amounts of electricity without melting which makes it perfect for devices that don’t consume much energy.