What is the minimum size of a Service Drop wire?

The minimum size of a Service Drop wire is designed to ensure safety, reliability, and efficient power delivery to residential premises. A diameter of 15 mm is commonly accepted as the minimum standard for Service Drop wires, as it provides the necessary mechanical strength to withstand environmental stresses such as wind, ice, and physical wear. It also accommodates the electrical load typically carried by these wires, ensuring that they can transmit power without overheating or degrading over time.

Larger diameters found in the other options may offer benefits such as reduced resistance, improved durability, or enhanced ability to carry heavier loads, but they represent sizes that exceed the minimum requirement and are typically used in specific or high-demand applications. Understanding the specifications for Service Drop wires is critical for ensuring compliance with electrical codes and standards used within the utility sector.