What is the preferred grounding method for utility service?

The preferred grounding method for utility service is the ground rod system. This method is widely utilized because it effectively helps to dissipate electrical energy into the earth, which is essential for ensuring safety and providing a low-resistance path for fault currents. Ground rods are typically driven into the ground at a specific depth to establish good conductivity with the soil, which is crucial for minimizing the risk of electrical shock and ensuring that electrical systems operate safely and efficiently.

Regularly, the installation of a ground rod involves the use of copper or galvanized steel rods, which are durable and resist corrosion over time. This method is also generally compliant with regulatory standards and is recognized for its practicality in a variety of soil conditions.

In contrast, while the other grounding methods may have specific applications or benefits in certain scenarios, they are not as universally preferred for utility service grounding. For example, the metal plate system requires significant surface area to function efficiently, while the wire mesh grounding system may be more complex to install and not suited for all types of utility needs. The concrete block system is less common and typically not required by electrical codes when grounding utility services. This makes the ground rod system the most reliable and effective choice for grounding utility services.