What is typically used as a supplemental method for grounding to reduce resistance?

Ground rings are typically used as a supplemental method for grounding to reduce resistance due to their ability to provide a larger surface area in contact with the earth. This increased surface area helps to enhance the connection to the ground, which can effectively lower the resistance encountered in the grounding system.

When a ground ring is installed, it is usually placed in a circular or rectangular configuration around a structure or a specific area, buried at a certain depth. This configuration ensures that the grounding system has multiple paths for electrical current to safely dissipate into the ground. The effectiveness of ground rings in minimizing resistance is crucial for ensuring the safety and effectiveness of electrical systems, as lower resistance improves the overall performance of grounding systems.

Other methods such as bonding jumpers, grounding plates, and ground rods also serve important roles in grounding and bonding, but they may not provide the same level of surface area contact with the earth as ground rings do, making them less effective as a supplemental method for reducing resistance specifically.