What is an important factor to monitor after significant weather events concerning grounding systems?

Monitoring continuity and resistance testing of grounding systems after significant weather events is essential because these tests ensure that the grounding systems are functioning correctly and providing effective fault protection. Weather events such as heavy rains, storms, or flooding can disrupt the integrity of grounding systems, potentially leading to increased resistance or broken connections.

A properly functioning grounding system must maintain low resistance to allow fault currents to safely dissipate into the ground, preventing electric shock hazards and protecting electrical equipment from damage. By conducting continuity testing, technicians can confirm that there are no broken or corroded connections. Meanwhile, resistance testing evaluates if the grounding electrode system still meets required resistance levels, typically below 25 ohms, to ensure safety standards are being upheld.

Monitoring grounding systems after severe weather is crucial, as compromised systems may not adequately protect against electrical faults, exposing individuals and equipment to significant risks.