BOLT THHN, commonly known in the electrical industry, refers to a specific type of electrical wire. This wire, typically made of copper or aluminum, is designed for use in commercial and residential applications. Synonyms for BOLT THHN can include THHN wire, building wire, solid wire, and single conductor wire. These terms are often used interchangeably, as they all describe the same electrical wire with a high heat-resistant nylon coating. BOLT THHN wires are known for their durability, flexibility, and ability to handle high temperatures. They are commonly used in a variety of electrical applications, such as wiring buildings, electrical panels, and machinery.