Ground testing is used to measure the performance of the circuit and check if it meets requirements. Routine testing should be performed to ensure that your ground system is performing as it was designed.
Megger recently published an article “Getting Down to Ground” that stated approximately 80% of electrical issues are grounding related.
Transworld Electric offers grounding system testing according to the ANSI/NETA MTS-2015 Standard section 7.13 part A thru D.
• Three-point fall-of-potential test on main grounding grid
• Two-point “point-to-point” resistance test from the main ground to all frame, equipment, and neutral bonding points.
• Using a micro-ohm meter to verify the resistance of any mechanical connections
• Using a clamp-on ground resistance meter to test bonding points and the main grounding system
• Three-point fall-of-potential test on the main grounding grid to make sure it meets all ANSI/NETA MTS-2015 standards.
• Two-point ground resistance tests on all equipment ground bonds and electrical neutral bonding points met ANSI/NETA MTS-2015 standard