Which type of grounding device is typically made from galvanized iron or steel and has a pointed end?

The grounding rod is typically made from galvanized iron or steel and features a pointed end, which aids in driving it into the ground effectively. This design allows the grounding rod to penetrate the soil and establish a low-resistance path to the earth, essential for safely dissipating electrical currents. The use of galvanized materials ensures the rod is resistant to corrosion, enhancing its durability and longevity in the ground.

In contrast, other types of grounding devices serve different purposes. The ground plate is a flat conductor buried in the ground; it does not have a pointed end and is typically used in specific grounding applications. The ground loop refers to a system of wires or conductors that can create a loop in the ground but isn't a physical metal device. Similarly, the ground mat is a network of wires laid out on the surface of the ground, often used for large installations but does not resemble a rod with a pointed tip. Hence, the characteristics of the grounding rod make it uniquely suited for its role in radio wave propagation and electrical safety.