What is the specified method for improving grounding effectiveness in a wet environment?

Using multiple ground rods is the specified method for improving grounding effectiveness in a wet environment. In such environments, soil conductivity can significantly enhance the performance of grounding systems. When employing multiple ground rods, each rod can provide additional pathways for fault currents to dissipate into the ground, taking advantage of the lower resistance that moisture-laden soil typically offers.

This technique also reduces the chances of the grounding system becoming ineffective due to localized dry conditions or soil interference. By spreading the ground rods apart, you can ensure that the grounding system has a more extensive reach and can effectively manage electrical faults or surges, which is crucial for safety and equipment protection.

Increasing the size of conductors or connecting to water pipes may enhance conductivity in some aspects, but they do not address the overall grounding effectiveness in a wet environment as effectively as multiple ground rods do. Installing ground plates can also be useful, but it is not a standard method specifically tailored for wet conditions compared to the technique of using multiple rods.