Why should grounding electrodes be installed underground?

Grounding electrodes are installed underground primarily to avoid physical damage. When grounding electrodes are buried, they are protected from mechanical impacts, environmental factors, and other forms of potential damage that might occur if they were installed above ground. This ensures that the grounding system remains functional and effective over time, which is crucial for safety and the proper operation of electrical systems.

While aesthetics can be a consideration in some installation contexts, it's not a primary reason for underground installation. Improving conductivity is also relevant, as soil can provide better conductivity than air, but the main concern remains the protection from physical damage. Reducing space usage does not directly relate to the effectiveness or the necessity of grounding electrode placement underground. Ultimately, the key consideration is ensuring the grounding system's integrity and reliability by placing it out of harm's way.