Copper Conductors: Copper is a metal with good electrical conductivity and is commonly used as a wire material for transformers. Pure copper conductors have excellent conductivity and low resistance for most toroidal transformer applications.

Aluminum conductors: Aluminum conductors are lighter and less costly than copper conductors, and are therefore commonly used in the manufacture of conductors for some large transformers. However, aluminum's conductivity is slightly lower than copper's, so it requires a larger cross-section to carry the same amount of current. 3.

Copper-aluminum composite wire: Copper-aluminum composite wire combines the advantages of both copper and aluminum. Its internal by the aluminum wire to provide lightweight, external by the copper cover layer to provide better conductive properties. This type of wire is often used in some high-power toroidal transformers to balance cost and performance considerations.

 Copper Tape Conductors: Copper tape conductors are also common in some high power toroidal transformers. Copper tape conductors have a larger cross-sectional area, providing lower resistance and better conductivity for applications carrying high currents.


The following factors also need to be considered when selecting conductors:

- Current Load and Power Requirements: Based on the design of the transformer and the rated load current, select the appropriate cross sectional area of the conductor to ensure that the conductor is capable of carrying the required current.

- Space constraints: Consider the space constraints within the transformer and the size of the conductor to ensure that the conductor can be properly installed and connected.

- Environmental Requirements: Select conductors with proper insulation and durability based on the application environment of the transformer. The use of insulating coatings, insulating sleeves, or insulation may be considered to provide additional electrical insulation protection.

Specific conductor selection should be based on transformer specifications, design requirements, application environment and relevant standards. It is recommended to consult a professional electrical engineer or refer to the relevant standards and manufacturer's technical guidelines to ensure that the appropriate conductor materials and specifications are selected.