8544.11.00 - Of copper

This HTS category, 8544.11.00, specifically pertains to winding wire made of copper. Winding wire is a specialized type of insulated electrical conductor designed for use in electromagnetic coils, such as those found in transformers, motors, generators, and solenoids. Its primary function is to facilitate the creation of magnetic fields when electrical current passes through it. The copper material is a key identifier for this subcategory, distinguishing it from other types of winding wire.

Within the broader category of insulated winding wire, 8544.11.00.00 differentiates itself from its sibling, 8544.19.00.00 ("Other"), by its explicit designation as being made of copper. While both fall under winding wire, this specific code targets copper as the conductor material. This distinction is crucial for accurate tariff application, as different conductor materials can have varying import duties and trade regulations.

The subcategories within 8544.11.00 further refine the classification based on the wire's gauge, which is a measure of its diameter. This granular breakdown allows for more precise categorization according to the physical dimensions of the copper winding wire. The subdivisions based on AWG (American Wire Gauge) standards, such as 8544.11.00.20 (33 AWG and finer), 8544.11.00.30 (22 AWG and finer but larger than 33 AWG), and 8544.11.00.50 (Other), are essential for identifying specific types of copper winding wire used in diverse electrical applications, from microelectronics to heavy industrial machinery.