Question 8072 of 749 · Maryland Journeyperson Electrician Exam
Oil-insulated transformers installed indoors are generally required to be installed in what?
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 8072
- A: A transformer vault
Explanation
Section 450.26 generally requires oil-insulated transformers installed indoors to be in a vault, with limited exceptions. Oil is flammable, so the vault confines a fire.
More questions: Motors, HVAC, Generators and Transformers
- 8074Secondary conductors leave a transformer and do not exceed 10 ft in length. What may they terminate in without protection at the secondary terminals?
- 8075Capacitors rated 1000 volts or less must discharge their residual voltage to what level within what time after disconnection?
- 8076What is the minimum ampacity of conductors supplying a capacitor?
- 8078Why are capacitors installed in motor circuits in industrial plants?
- 8001Branch-circuit conductors supplying a single continuous-duty motor must have an ampacity of at least what percentage of the motor full-load current?
- 8002A continuous-duty motor has a table full-load current of 28 A. What is the minimum ampacity of its branch-circuit conductors?