what does thwn stand for?

“THWN” stands for “Thermoplastic Heat and Water-resistant Nylon coated.” This type of wire is commonly used in building wiring. THWN wire is distinguished by thermoplastic insulation, engineered to offer exceptional heat resistance, an indispensable feature in modern electrical installations. The outer layer, a meticulously crafted nylon coating, affords the wire enhanced protection against water intrusion and a wide range of environmental challenges. Ideal for both interior and exterior applications, THWN wire is a staple in conduit systems and various electrical setups, primarily where resilience to moisture and elevated temperatures are of paramount importance. Its versatile applications, from residential to commercial projects, underscore its significance in ensuring safe and efficient electrical infrastructures.”