Chapter 7408 — Customs Tariff Headings

6.5mm Refined Copper Grounding Wire

A straight refined copper wire with a 6.5mm cross-section, used for grounding systems in building electrical installations. It falls under tariff item 7408.11.10 because it is made of refined copper, has a maximum cross-sectional dimension exceeding 6mm but not exceeding 9.5mm, and is in the form of wire as defined in Chapter 74.

6.8mm Refined Copper Transformer Wire

A refined copper wire with a 6.8mm cross-section, used for winding transformer cores in power equipment manufacturing. It is classified under tariff item 7408.11.10 because it is bare refined copper wire with a maximum cross-sectional dimension exceeding 6mm but not exceeding 9.5mm, meeting the Chapter 74 definition of wire.

7.2mm Refined Copper Stator Wire

A refined copper wire with a 7.2mm cross-section, used for electric motor stators in industrial machinery. It is classified under tariff item 7408.11.10 because it is bare refined copper wire with a maximum cross-sectional dimension exceeding 6mm but not exceeding 9.5mm, meeting the Chapter 74 definition of wire.

7.8mm Refined Copper Welding Wire

A refined copper wire with a 7.8mm diameter, used as filler material in welding copper components in industrial fabrication. It is classified under tariff item 7408.11.10 because it is made of refined copper, has a maximum cross-sectional dimension exceeding 6mm but not exceeding 9.5mm, and is in the form of wire as defined in Chapter 74.

7mm Diameter Refined Copper Electrical Wire

A straight length of refined copper wire with a maximum cross-sectional dimension of 7mm, used primarily for electrical conduction in power distribution applications. It falls under tariff item 7408.11.10 because it is made of refined copper, has a maximum cross-sectional dimension exceeding 6mm but not exceeding 9.5mm, and is in the form of wire as defined in Chapter 74.

8.5mm Refined Copper Busbar Wire

A rectangular-profile refined copper wire measuring 8.5mm maximum cross-section, commonly used as busbar material in electrical panels and switchgear. It is classified under tariff item 7408.11.10 because it is made of refined copper, has a maximum cross-sectional dimension exceeding 6mm but not exceeding 9.5mm, and meets the Chapter 74 definition of wire (including rectangular cross-sections with rounded corners).

8mm Refined Copper Marine Grade Wire

An 8mm refined copper wire engineered for corrosion resistance in marine electrical systems and shipbuilding. It is classified under tariff item 7408.11.10 because it is made of refined copper, has a maximum cross-sectional dimension exceeding 6mm but not exceeding 9.5mm, and is in the form of wire as defined in Chapter 74.

9.2mm Refined Copper Straight Annealed Wire

Annealed refined copper wire at 9.2mm maximum cross-section, with a soft temper for easy forming in manufacturing. It is classified under tariff item 7408.11.10 because it is made of refined copper, has a maximum cross-sectional dimension exceeding 6mm but not exceeding 9.5mm, and is in the form of wire as defined in Chapter 74.

9.4mm Refined Copper Heavy Gauge Wire

Heavy gauge 9.4mm refined copper wire for structural reinforcement and heavy electrical feeds. It is classified under tariff item 7408.11.10 because it is made of refined copper, has a maximum cross-sectional dimension exceeding 6mm but not exceeding 9.5mm, and is in the form of wire as defined in Chapter 74.

9mm Oxygen-Free Refined Copper Wire

High-purity oxygen-free refined copper wire with a 9mm maximum cross-section, used in specialty electronics and RF applications for superior conductivity. It is classified under tariff item 7408.11.10 because it is made of refined copper, has a maximum cross-sectional dimension exceeding 6mm but not exceeding 9.5mm, and is in the form of wire as defined in Chapter 74.

10 mm Diameter Electrolytic Tough Pitch Copper Wire

Electrolytic tough pitch (ETP) copper wire with a 10.2 mm cross-sectional dimension, commonly used in transformer windings and heavy electrical connections. This wire is made of refined copper and its maximum cross-sectional dimension exceeds 9.5 mm but does not exceed 12.7 mm, placing it under tariff item 7408.11.20.

11.5 mm Deoxidized Non-Arsenical Copper Wire

Deoxidized high phosphorus (DHP) copper wire, UNS C12200, with an 11.5 mm diameter, used for plumbing and HVAC ground straps. This wire is made of refined copper (phosphorus content is within allowable limits) and its maximum cross-sectional dimension exceeds 9.5 mm but does not exceed 12.7 mm, placing it under tariff item 7408.11.20.

12 AWG Refined Copper Bus Wire

A straight length of refined copper wire with a 10 mm diameter cross-section, used primarily in electrical bus bar applications for power distribution. This wire is made of refined copper and its maximum cross-sectional dimension exceeds 9.5 mm but does not exceed 12.7 mm, placing it under tariff item 7408.11.20.

C11000 Electrolytic Copper Rod-Wire

C11000 ETP copper continuously cast rod-wire hybrid with a 10.5 mm diameter, used for resistance welding electrodes. This product is in wire form (drawn) and made of refined copper, with a maximum cross-sectional dimension exceeding 9.5 mm but not exceeding 12.7 mm, placing it under tariff item 7408.11.20.

Data Center Power Shelf Copper Wire

11.2 mm diameter refined copper wire for 48VDC power shelves in hyperscale data centers. This wire is made of refined copper and its maximum cross-sectional dimension exceeds 9.5 mm but does not exceed 12.7 mm, placing it under tariff item 7408.11.20.

Heavy Gauge C10100 Refined Copper Wire

C10100 grade refined copper wire with an 11 mm cross-section, featuring 99.99% purity for audio equipment grounding and high-end electrical feeds. This wire is made of refined copper and its maximum cross-sectional dimension exceeds 9.5 mm but does not exceed 12.7 mm, placing it under tariff item 7408.11.20.

Industrial 3/8-Inch Refined Copper Ground Wire

Industrial 3/8-inch refined copper ground wire, measuring 9.525 mm in diameter, is used for electrical grounding systems in commercial buildings. It is made of refined copper and has a maximum cross-sectional dimension exceeding 9.5 mm but not exceeding 12.7 mm, which places it under tariff item 7408.11.20.

Industrial Robot Arm Flex Copper Wire

10.1 mm extra-flexible refined copper wire for multi-axis industrial robot power cables. This wire is made of refined copper and its maximum cross-sectional dimension exceeds 9.5 mm but does not exceed 12.7 mm, placing it under tariff item 7408.11.20.

Phosphorized Refined Copper Welding Wire

12.7 mm diameter phosphorized refined copper wire used for gas-shielded welding applications in marine and plumbing industries. This wire is made of refined copper (phosphorus content is within allowable limits) and its maximum cross-sectional dimension exceeds 9.5 mm but does not exceed 12.7 mm, placing it under tariff item 7408.11.20.

Telecom Backbone 10.8 mm Copper Wire

10.8 mm refined copper wire for telecom equipment power feeds and antenna grounding planes. This wire is made of refined copper and its maximum cross-sectional dimension exceeds 9.5 mm but does not exceed 12.7 mm, placing it under tariff item 7408.11.20.

15 mm Oxygen-Free Copper Round Wire

Oxygen-free high-conductivity (OFHC) copper wire with a 15 mm diameter, used in high-purity applications such as RF equipment and vacuum systems. It is made of refined copper and its maximum cross-sectional dimension exceeds 12.7 mm, placing it under this tariff item.

EV Battery Pack Copper Transition Wire

14 mm refined copper wire segments for electric vehicle battery pack high-current bus transitions. It is made of refined copper and its maximum cross-sectional dimension exceeds 12.7 mm, placing it under this tariff item.

High-Purity Annealed Copper Bus Bar Wire

Annealed refined copper wire 12 mm diameter for fabricating flexible bus bars in switchgear manufacturing. It is made of refined copper and its maximum cross-sectional dimension exceeds 12.7 mm, placing it under this tariff item.

Marine Grade Phosphor Bronze Substitute Copper Wire

13 mm deoxidized refined copper wire serving as phosphor bronze alternative for marine hardware connectors. It is made of refined copper and its maximum cross-sectional dimension exceeds 12.7 mm, placing it under this tariff item.

Renewable Energy Inverter Copper Feed Wire

12.5 mm refined copper wire for string inverter DC bus feeds in utility-scale solar farms. It is made of refined copper and its maximum cross-sectional dimension exceeds 12.7 mm, placing it under this tariff item.

0.2mm Ultra-Fine Refined Copper Wire

Ultra-fine refined copper wire with a diameter of 0.2 mm, drawn to extreme precision for use in microelectronics. It is uncoated and not alloyed, meeting the definition of refined copper wire under tariff item 7408.19.00.

0.3mm Bare Refined Copper Fine Wire

Ultra-fine bare refined copper wire, 0.3 mm diameter, dead-soft temper for jewelry making and arts/crafts. It is uncoated and not alloyed, meeting the definition of refined copper wire under tariff item 7408.19.00.

0.3mm High-Conductivity Copper Wire

Ultra-fine 0.3mm refined copper wire with IACS 101% conductivity for precision instruments. Tariff item 7408.19.00 applies to refined copper wire not exceeding 3mm, and the high conductivity is due to the purity of the copper.

0.3mm Refined Copper Magnet Wire Base

Ultra-fine 0.3 mm refined copper wire, uncoated and drawn to uniform cross-section, intended as a base for subsequent magnet wire insulation. It is not yet insulated, so it falls under refined copper wire of heading 7408.

0.4mm Refined Copper RF Coil Wire

Refined copper wire of 0.4 mm diameter, uncoated and drawn for RF coil manufacturing. It is not alloyed and meets the definition of refined copper wire, making it classifiable under tariff item 7408.19.00.

0.5mm Refined Copper Magnet Wire

Enamel-insulated refined copper magnet wire with a 0.5mm diameter, used in electric motors and transformers. This wire is classified under tariff item 7408.19.00 as it is refined copper wire with a maximum cross-sectional dimension of 3mm or less, and the insulation does not change its classification as wire of Chapter 74.

0.5mm Refined Copper Wire

Thin refined copper wire with a diameter of 0.5 mm, uncoated and suitable for electrical applications. It is not alloyed and meets the definition of refined copper wire, classifiable under tariff item 7408.19.00.

0.6mm High-Conductivity Copper Wire

High-conductivity refined copper wire with 99.99% purity and a 0.6mm diameter, used in medical device sensors. The superior purity reduces electrical resistance, making it suitable for biomedical applications, and it is classified under tariff item 7408.19.00 as refined copper wire not exceeding 3mm in cross-section.

0.6mm Refined Copper Enameled Wire Base

0.6 mm refined copper wire, bare and uncoated, intended as a base for enameled applications in solenoids. It is not alloyed and meets the definition of refined copper wire, classifiable under tariff item 7408.19.00.

0.8mm Electrolytic Tough Pitch Copper Wire

ETP-grade refined copper wire at 0.8mm, produced via electrolytic refining for superior conductivity in cables. It falls under tariff item 7408.19.00 as non-alloy refined copper wire with a circular cross-section not exceeding 3mm, and it is not coated.

0.8mm Enamelled Refined Copper Wire

Fine 0.8mm refined copper wire with a solderable enamel coating, used for solenoids and relays. The wire is classified under tariff item 7408.19.00 as refined copper wire not exceeding 3mm, and the enamel coating does not remove it from Chapter 74 as it remains a wire product.

0.8mm Refined Copper Bus Wire

0.8 mm refined copper wire, uncoated and drawn for use in bus bars for power distribution. It is not alloyed and meets the definition of refined copper wire, classifiable under tariff item 7408.19.00.

1.0mm Bare Refined Copper Wire

Bare refined copper wire measuring 1.0 mm in diameter, used in transformers and motors. It is uncoated and not alloyed, meeting the definition of refined copper wire under tariff item 7408.19.00.

1.0mm Pure Copper Winding Wire

Unalloyed refined copper wire with a 1mm diameter, coated with thin polyurethane insulation for transformer windings. It falls under tariff item 7408.19.00 as refined copper wire not exceeding 3mm, distinguished from alloy wires by its high copper purity.

1.2mm Bare Copper Wire

Uninsulated refined copper wire with a 1.2mm diameter, ideal for transformer windings and bus bar applications. Classified under tariff item 7408.19.00 for refined copper wire not exceeding 3mm, excluding alloys and coated varieties.

1.2mm Phosphorized Refined Copper Wire

Refined copper wire with a trace phosphor deoxidizer, 1.2mm diameter, used for plumbing fittings. It still classifies under tariff item 7408.19.00 as refined copper wire, as the phosphor content is below the threshold that would make it a copper alloy under Chapter 74 notes.

1.2mm Refined Copper Hard Drawn Wire

1.2 mm hard drawn refined copper wire for overhead conductors, uncoated and not alloyed. It meets the definition of refined copper wire and is classifiable under tariff item 7408.19.00.

1.5mm Annealed Refined Copper Wire

Soft-annealed refined copper wire at 1.5mm for easy forming in automotive harnesses. It is classed in tariff item 7408.19.00 as bare refined copper wire with a circular cross-section not exceeding 3mm, and annealing enhances ductility without changing classification.

1.5mm Pure Refined Copper Wire

1.5 mm diameter pure refined copper wire, soft annealed for easy bending, used in jewelry making and crafts. It is uncoated and not alloyed, meeting the definition of refined copper wire under tariff item 7408.19.00.

1.8mm Oxygen-Free Copper Wire

High-purity oxygen-free refined copper wire, 1.8mm gauge, for audio equipment and RF applications. Tariff item 7408.19.00 covers refined copper wire not exceeding 3mm, and oxygen-free copper meets the purity standard of at least 99.95%.

2.0mm Annealed Refined Copper Wire

Soft-annealed refined copper wire, 2.0mm thick, for automotive harnesses and welding. Tariff item 7408.19.00 applies to refined copper wire with a maximum dimension not exceeding 3mm, and the annealing process does not change its classification as wire.

2.5mm Electrolytic Tough Pitch Copper Wire

Electrolytic tough pitch (ETP) refined copper wire with a 2.5mm diameter, bare or lightly coated, for busbar connections and grounding. Tariff item 7408.19.00 applies to refined copper wire with a cross-section not exceeding 3mm, and ETP copper is a standard refined copper grade.

2.5mm Refined Copper Electrical Wire

2.5 mm refined copper electrical wire, uncoated and oxygen-free, for custom harnessing. It is not alloyed and meets the definition of refined copper wire, classifiable under tariff item 7408.19.00.

2.9mm Refined Copper Bus Wire

Rectangular refined copper bus wire with a maximum dimension of 2.9mm, for circuit boards. It fits tariff item 7408.19.00 as refined copper wire not exceeding 3mm, and the flat profile optimizes space in electronics.

2mm Oxygen-Free Copper Wire

High-purity oxygen-free refined copper wire with a 2mm diameter, for audio cables and RF applications minimizing signal loss. Tariff item 7408.19.00 applies to refined, bare copper wire not exceeding 3mm, excluding alloys per subheading notes.

2mm Refined Copper Winding Wire

Refined copper wire at 2 mm diameter, uncoated and precision-drawn for motor windings and inductors. It is not alloyed and meets the definition of refined copper wire, classifiable under tariff item 7408.19.00.

3mm Refined Copper Annealed Wire

3 mm annealed refined copper wire for binding and structural use, uncoated and not alloyed. It meets the definition of refined copper wire and is classifiable under tariff item 7408.19.00.

4mm Refined Copper Tie Wire

4 mm refined copper tie wire for construction reinforcement, uncoated and not alloyed. It meets the definition of refined copper wire and is classifiable under tariff item 7408.19.00.

5mm Refined Copper Fence Wire

5 mm refined copper fence wire for durable animal enclosures, uncoated and not alloyed. It meets the definition of refined copper wire and is classifiable under tariff item 7408.19.00.

AWG 18 Refined Copper Magnet Wire Base

Bare refined copper wire equivalent to AWG 18 (about 1mm), used as base material before enamel coating in motors. Tariff item 7408.19.00 covers this uncoated refined copper wire not exceeding 3mm, and it excludes any alloying elements.