What factor can improve the effectiveness of a ground system?

The effectiveness of a ground system is significantly influenced by soil conditions, particularly moisture levels. Moist soil conditions enhance the conductivity of the soil, which is essential for ensuring that grounding systems operate effectively. When the soil is wet, it allows for better electrical connections between the grounding system and the earth, reducing resistance and improving the ability to safely dissipate fault currents.

In contrast, low soil conductivity, insulated cables, and distance from electrical panels can impede the effectiveness of grounding systems. Low soil conductivity increases resistance, making it harder for the ground system to function properly. Insulated cables do not contribute to grounding effectiveness because they prevent electrical flow to the ground. Distance from electrical panels can also reduce the effectiveness of the ground system by increasing the resistance in the ground circuit, as proper grounding relies on proximity to the electrical source for effective current dissipation.