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. NEC 410.116(B) requires fixtures installed in fire-rated ceilings to be marked with which designation?

    Answer: IC-rated

    Recessed luminaires installed in fire-rated assemblies must be IC-rated (Insulation Contact rated) and marked for installation in fire-rated ceilings.

  2. Under NEC 600.5, a sign or outline lighting system rated at 1200VA or less requires a branch circuit of at least what ampere rating?

    Answer: 20 amperes

    NEC 600.5(A) requires each commercial occupancy sign to be supplied by a dedicated branch circuit rated at least 20 amperes.

  3. Per NEC 358.20, what is the minimum trade size for Electrical Metallic Tubing (EMT) permitted in commercial wiring?

    Answer: 1/2 inch

    NEC 358.20 specifies that EMT is available in trade sizes 1/2 inch through 4 inches, making 1/2 inch the minimum permitted size.

  4. NEC 240.4(D) prohibits the use of overcurrent devices rated above 15 amperes to protect conductors of what size in commercial applications (copper)?

    Answer: 14 AWG

    NEC 240.4(D) specifies that 14 AWG copper conductors must not be protected by overcurrent devices rated more than 15 amperes.

  5. According to NEC 215.2(A)(1), the minimum ampacity for feeder conductors must be the greater of the computed load or what percentage of continuous loads plus 100% of noncontinuous loads?

    Answer: 125%

    Feeder conductors must be sized at 125% of the continuous load plus 100% of noncontinuous loads per NEC 215.2(A)(1).

  6. NEC 344.10 lists where Rigid Metal Conduit (RMC) is permitted. Which environment is specifically where RMC is permitted but IMC generally is NOT without additional protection?

    Answer: Concrete encasement in direct contact with the earth

    RMC's heavier wall provides corrosion resistance that makes it suitable for concrete encasement and direct burial without extra protection in most conditions.

  7. Under NEC 800.113, communications cables installed in commercial buildings in spaces used for environmental air handling must be:

    Answer: Plenum-rated (CMP)

    NEC 800.113 requires plenum-rated (CMP) cables in air-handling spaces because these cables produce minimal smoke and toxic fumes if involved in a fire.