Question 8072 of 844 · Washington 01 Journey Level Electrician Exam
Oil-insulated transformers installed indoors are generally required to be installed in what?
Exactly one answer is correct.
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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.
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