Question 5049 of 731 · Texas Journeyman Electrician Exam
A service raceway enters an enclosure through a knockout with concentric rings left in place. Which bonding method alone is NOT acceptable?
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 5049
- A: A standard locknut only
Explanation
Service raceways must be bonded by threaded connections, threadless couplings made tight, bonding jumpers, or other listed devices. Bonding jumpers are required around impaired connections such as concentric or eccentric knockouts, and a standard locknut alone is not sufficient. See 250.92(B).
More questions: Grounding and Bonding
- 5050The intersystem bonding termination must be able to connect at least how many intersystem bonding conductors?
- 5051Where is the intersystem bonding termination required?
- 5052A service has 3/0 AWG copper ungrounded conductors. What is the minimum copper bonding jumper for the interior metal water piping?
- 5053Metal gas piping that is likely to become energized may be bonded by
- 5054For a separately derived system, where is the system bonding jumper installed under the general rule?
- 5055A transformer supplies 250 kcmil copper secondary conductors. What is the minimum copper GEC for this separately derived system?