What does mean of 16 AWG S?

The term "16 AWG S" refers to a specific type of electrical wire. "16 AWG" stands for 16-gauge wire, which indicates its diameter and current-carrying capacity; it is commonly used for low to moderate power applications. The "S" typically signifies that the wire is stranded, meaning it is made up of multiple smaller strands of wire twisted together, which provides greater flexibility compared to solid wire of the same gauge.