Grounding Definitions: Keep your definitions straight and stay safe
Basic grounding and bonding concepts and related performance provisions are contained in the National Electrical Code, as they are essential for safe electrical systems. While the concepts are fairly straightforward, many people find them complex and challenging. Having definitions for concepts such as ground, grounding and bonding, and knowing how and why these circuit elements work will clarify these misunderstandings and help Code users master electrical grounding and bonding.
1. Which of the following best defines the term “ground”?
Correct Answer: The earth
2. ______ means connected to establish electrical continuity and conductivity.
Correct Answer: Bonded (bonding)
3. Which of the following NEC terms is best defined as connected (connecting) to ground or to a conductive body that extends the ground connection?
Correct Answer: Grounded (grounding)
4. When a conductive object, equipment or electrical system (source) is connected to ground, it is not always connected to the earth.
Correct Answer: False
5. Which of the following characteristics are necessary for an effective ground-fault current path?
Correct Answer: All of the above
6. Which of the following terms is best defined as “not connected to ground or to a conductive body that extends the ground connection”?
Correct Answer: Ungrounded
7. Electrical systems are grounded (connected to the earth) in a manner that will accomplish which of the following?
Correct Answer: All of the above
8. The earth is part of the electrical grounding circuit.
Correct Answer: True
9. The earth can be depended on to function as an effective ground-fault current path.
Correct Answer: False
10. A grounded electrical system always includes a conductor that is intentionally connected to ground.
Correct Answer: True
Score: