Royherd27 said:Can the point to point test, (to determine the resistance between the main grounding system and all the major electrical frames, system neutral, etc) be made with an ordinary multimeter or does it need a special ground test tool?
The NETA value of 0.5 ohm is widely accepted?
The purpose of a grounding test is to ensure that electrical equipment and systems are properly connected to the ground, which is essential for safety and proper functioning.
An ordinary multimeter can measure voltage, resistance, and continuity, but it may not have the specific features and accuracy required for a thorough grounding test. A special tool, such as a ground resistance tester or a clamp meter, is designed specifically for grounding tests and provides more precise and detailed results.
A grounding test should be performed whenever new electrical equipment is installed, after any modifications or repairs, and on a regular basis as part of routine maintenance. It is also recommended to perform a grounding test after any incidents or disturbances that may have affected the electrical system.
Not performing a grounding test can lead to safety hazards, such as electrical shocks, fires, and equipment damage. It can also result in improper functioning of electrical systems, which can lead to downtime, loss of productivity, and expensive repairs.
While a basic grounding test can be performed by anyone with the proper equipment and knowledge, it is recommended to have a trained professional conduct more complex and thorough grounding tests. This ensures accuracy and compliance with safety standards and regulations.