Practice Test Geeks(E2) E2 Commercial Electrical Inspector Practice Test
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NEC Compliance 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 NEC Compliance flashcards as text

  1. Under NEC Article 230, what is the maximum number of service disconnects permitted for a single commercial occupancy?

    Answer: 6

    NEC 230.71 allows a maximum of six service disconnects for a single commercial occupancy grouped in one location.

  2. NEC 210.19(A) requires that branch circuit conductors have an ampacity of at least what percentage of the continuous load they serve?

    Answer: 125%

    Conductors must be sized at 125% of the continuous load to account for heat buildup under sustained operation.

  3. According to NEC 450.13, a dry-type transformer rated 112.5 kVA or less must have a minimum clearance of how many inches from combustible material?

    Answer: 12 inches

    NEC 450.13(A) requires at least 12 inches of separation between a dry-type transformer and combustible material unless the transformer is separated by a fire-resistant, heat-insulating barrier.

  4. NEC 700.12 requires emergency system sources to supply full load within how many seconds of normal power failure?

    Answer: 10 seconds

    Emergency systems must restore power within 10 seconds of normal source failure per NEC 700.12.

  5. Under NEC 404.2(C), a switch controlling a lighting outlet in a bathroom of a commercial occupancy must be located where?

    Answer: Inside the bathroom, away from the tub or shower

    NEC 404.2(C) permits switches inside bathrooms if they are not within reach of a tub or shower.

  6. NEC 517.13 requires that patient care areas in healthcare facilities have what special grounding provision for receptacles and fixed equipment?

    Answer: An insulated equipment grounding conductor in addition to the metallic raceway path

    NEC 517.13 mandates a redundant grounding path: both the metal raceway and an insulated EGC must be present to ensure continuity in patient care areas.

  7. According to NEC 225.30, a commercial building may have a maximum of how many feeder or branch circuit supplies from outside the building?

    Answer: One

    NEC 225.30 limits outside feeder or branch circuit supplies to one per building or structure, with specific listed exceptions.