A good product to cover a substation ground grid is what?

Covering a substation ground grid effectively is crucial for ensuring safety and system reliability. Crushed stone is the most suitable material for this purpose for several reasons.

Firstly, crushed stone provides excellent drainage. Good drainage is essential in substation environments to prevent waterlogging, which could impact electrical grounding systems. It also helps maintain the integrity of the ground grid, ensuring that it remains effective in fault current situations.

Additionally, crushed stone is durable and resistant to erosion, which is important in maintaining a reliable grounding system over time. Unlike organic materials or softer soils, crushed stone does not decompose or compress under load, which can compromise the ground grid's effectiveness.

Lastly, using crushed stone can provide a stable and firm surface for maintenance access while still allowing for the necessary electrical conductivity when properly installed. These factors make crushed stone the best choice among the options presented for covering a substation ground grid.