In every electrical system, wires play a vital role, and it is important to know the appropriate wiring type for every task. There are several, such as THHN (Thermoplastic High Heat-resistant Nylon-coated), which works well in dry spaces, and NM-B (Non-Metallic Sheathed Cable) that is used in homes. There are also UF (Underground Feeder) wires that can be used in moisture-laden outdoor environments. Each type has its features that are helpful depending on the application and the environment so it is very important to get the right wire for the specific purpose.