What Is The Difference Between Thhn And THWN Wire?
What Is The Difference Between Thhn And THWN Wire? THHN stands for Thermoplastic High Heat-resistant Nylon-coated. THWN wire is the same, but the “W” stands for water-resistant. … THWN has a maximum temperature of 90°C in dry and wet locations, whereas THHN wire can only be used in temperatures as high as 75°C in wet