The standard conductor material for low-voltage cable is _____.

The standard conductor material for low-voltage cable is annealed copper. This choice is correct because annealed copper offers excellent conductivity, which is critical for efficient power transmission in low-voltage applications. Its malleability and ductility allow it to be easily formed into wires, making it highly versatile for various types of installations. Annealed copper also has good resistance to corrosion, which is essential for ensuring the longevity and reliability of cabling systems.

While aluminum is used in specific applications due to its lighter weight and lower cost, it does not conduct electricity as effectively as copper and may require larger diameters to carry the same amount of current. Tinned copper is sometimes utilized for specific purposes, especially in environments where corrosion resistance is critical, but it is not the standard material for general low-voltage cabling. Steel is generally not used for conductor materials in low-voltage applications since it has significantly lower conductivity compared to copper and is primarily used for structural support in cable trays or conduits rather than as a conductor.