Practice Test Geeks(E2) E2 Commercial Electrical Inspector Practice Test
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Safety Standards and Practices Flashcards

7 cards from real E2 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Safety Standards and Practices flashcards as text

  1. A commercial inspector observes a temporary power panel on a construction site with no GFCI protection on 125V, 15A receptacles. OSHA 29 CFR 1926.404(b)(1) requires GFCI protection or which alternative?

    Answer: An assured equipment grounding conductor program (AEGCP)

    OSHA 1926.404(b)(1) requires either GFCI protection or an assured equipment grounding conductor program for receptacles on construction sites.

  2. When testing for absence of voltage before establishing an electrically safe work condition, NFPA 70E requires the test instrument to be verified as functional:

    Answer: Both before and after the absence-of-voltage test

    NFPA 70E 120.5(7) requires verifying the test instrument on a known voltage source both before and after testing to confirm instrument reliability.

  3. A commercial building has a 2,000A, 480Y/277V service. NEC 230.95 requires ground fault protection set at no more than:

    Answer: 1,200A with a maximum time delay of 1 second for ground faults at 3,000A or more

    NEC 230.95(A) requires GFPE to be set to open at currents not exceeding 1,200A with a maximum time delay of 1 second at 3,000A or more ground fault current.

  4. An inspector reviewing maintenance records finds that a commercial facility has never tested its GFPE on the service switchboard. NFPA 70B recommends performance testing of GFPE at what interval?

    Answer: Annually

    NFPA 70B recommends annual testing of ground fault protection equipment to ensure proper operation and prevent undetected failures.

  5. Under NEC 110.26(C), the required dedicated electrical space above a panelboard extends from the floor to:

    Answer: The structural ceiling or 25 feet above the equipment, whichever is lower

    NEC 110.26(E) requires a dedicated equipment space extending from the floor to the structural ceiling or 25 feet, whichever is lower, for electrical equipment.

  6. A contractor proposes using extension cords as permanent wiring in a commercial office to supply workstation receptacles. An E2 inspector should cite which NEC section?

    Answer: NEC 400.12, which prohibits flexible cords and cables as a substitute for fixed wiring

    NEC 400.12 explicitly prohibits flexible cords and cables from being used as a substitute for fixed wiring of structures.

  7. During an E2 inspection, an inspector finds that a 480V motor control center (MCC) has been relocated 18 inches closer to a wall, reducing the rear working space. The original installation required rear access. This violates:

    Answer: NEC 110.26(A)(2) which requires 30 inches of working space when rear access to live parts is needed

    NEC 110.26(A)(2) requires the same working space at the rear of equipment where rear access is necessary to work on live or energized parts.