What Maintenance Is Required for Grounding Systems?

Inspecting and Cleaning Grounding Connections

Inspect grounding connections at least twice a year, or more often if you live in an area with high humidity or salt exposure. Use a multimeter to check for resistance, and tighten any loose connections. Clean any corrosion or dirt from connections using a wire brush and a mixture of baking soda and water. Check for any signs of damage, such as cracks or breaks in the grounding system.

Bonding and Grounding Connections

Ensure that all equipment and components are properly bonded to the grounding system. This includes generators, transfer switches, and other electrical equipment. Use a minimum of 6 AWG copper wire for bonding connections, and make sure connections are made to clean, rust-free surfaces. For grounding connections, use a minimum of 10 AWG copper wire, and ensure connections are made to a solid, unbroken grounding rod that extends at least 8 feet into the earth.

Testing Grounding Systems

Test your grounding system annually to ensure it’s functioning properly. Use a ground fault circuit interrupter (GFCI) tester to check for ground faults, and a multimeter to check for resistance. Check the voltage drop across the grounding system to ensure it’s within the manufacturer’s specifications. Keep records of your testing and maintenance to ensure compliance with safety codes and regulations.