What information is included on the markings for certified static and power grounds?

• A. Date tested and test results in ohms
• B. Only the date tested
• C. Only resistance value
• D. No marking required

Answer: (A)

Markings on certified static and power grounds are there to show both when the item was last tested and what the measured resistance is, in ohms. This combination lets you quickly verify that the grounding path still meets the required low resistance and that the test is current enough to be valid. The date tested provides traceability and maintenance timing, while the resistance value confirms the actual health of the ground path. Without both pieces of information, you wouldn’t know if the ground is still within spec or if it’s time for re-testing, and without markings at all there’s no at-a-glance way to confirm compliance.