Question 5059 of 844 · Washington 01 Journey Level Electrician Exam
Which of these AC systems is required to be grounded?
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 5059
- C: 120/240 V, single-phase, 3-wire
Explanation
Systems where the maximum voltage to ground on the ungrounded conductors does not exceed 150 V, such as 120/240 V single-phase, must be grounded. The other systems are permitted or required to be ungrounded. See 250.20.
More questions: Grounding and Bonding
- 5060High-impedance grounded neutral systems are permitted for 3-phase AC systems of 480 V to 1000 V where
- 5061Which of the following shall NOT be used to connect EGCs or bonding jumpers to enclosures?
- 5062An equipment bonding jumper on the load side of an OCPD is sized according to
- 5063A supply-side bonding jumper on the line side of the service disconnect is sized from
- 5064In NEC 2020 and NEC 2023, grounding requirements specific to systems over 1000 V are located in
- 5001At a building or structure, which of the permitted grounding electrodes must be bonded together to form the grounding electrode system?