Question 7069 of 749 · Maryland Journeyperson Electrician Exam
Under the 2020 and 2023 NEC, which equipment must receive a field-applied arc flash warning marking?
Exactly one answer is correct.
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Correct answer to question 7069
- B: Panelboards and similar equipment in other than dwelling units likely to need servicing while energized
Explanation
Section 110.16(A) requires switchboards, switchgear, enclosed panelboards, industrial control panels, meter socket enclosures and motor control centers in other than dwelling units to be marked to warn of arc flash hazards where examination or maintenance while energized is likely. The marking must be clearly visible before work begins.
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