Question 9019 of 749 · Maryland Journeyperson Electrician Exam
What is the basic design principle of explosionproof equipment?
Exactly one answer is correct.
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Correct answer to question 9019
- B: It withstands an internal explosion and prevents ignition of the surrounding atmosphere
Explanation
Explosionproof equipment is built to contain an explosion of a gas or vapor inside the enclosure and to cool escaping gases so the surrounding atmosphere is not ignited. Low-energy design describes intrinsic safety, and positive pressure describes purged and pressurized equipment.
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