8544.60.40.00 - Of copper

This classification covers insulated electrical conductors, specifically wires and cables, designed for use with voltages exceeding 1,000 volts. The crucial defining characteristic here is the material: these conductors must be made of copper. This category is distinct from other insulated conductors exceeding 1,000V by its composition, specifically excluding those made from other metals or composite materials.

The category is a terminal node within the HTS, meaning it represents the most specific level of detail for this particular type of insulated copper conductor. Therefore, there are no further subcategories to introduce. Classification within this code relies on confirming that the product is an insulated electrical conductor intended for high-voltage applications and that it is constructed primarily from copper.

To ensure correct classification, users should verify that the voltage rating of the insulated conductor exceeds 1,000 volts and that the conductive element is indeed copper. If the conductor were made of aluminum or other metals, or if the voltage rating were 1,000 volts or less, it would be classified under a different HTS code. This specificity ensures accurate tariff assessment for high-voltage copper electrical systems.