Question 2019 of 844 · Washington 01 Journey Level Electrician Exam
Which types of surge protective device satisfy the dwelling unit service surge protection rule?
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 2019
- C: Type 1 or Type 2
Explanation
The SPD required by 230.67 must be Type 1 or Type 2. Type 3 devices are point-of-use and Type 4 is a component assembly. See 230.67.
More questions: Services and Service Equipment
- 2020Service-entrance cable run on the outside of a building must be supported within 12 in. of the service head and at intervals not exceeding what distance?
- 2021A commercial service supplies 120 A of continuous load and 40 A of noncontinuous load. What is the minimum ampacity of the service-entrance conductors?
- 2022Under the 2020 and later editions, how must two to six service disconnects for one service be arranged?
- 2023A service supplies a small commercial building, not a dwelling, with more than two branch circuits. What is the minimum service disconnect rating?
- 2024What is the minimum rating of the service disconnecting means for a one-family dwelling?
- 2025Using the 83 percent rule of the 2020 and 2023 NEC, what minimum aluminum XHHW conductor at 75 degrees C is needed for a 200 A, 120/240 volt one-family dwelling service?