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Codes, Standards & Safety Flashcards

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

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  1. Under the NEC, how far may any point along a countertop wall line be from a receptacle outlet?

    Answer: 24 inches

    NEC 210.52(C)(1) requires receptacles so no point along the countertop wall line is more than 24 inches from one.

  2. What minimum number of 20-amp small-appliance branch circuits does the NEC require to serve kitchen countertop receptacles?

    Answer: Two

    NEC 210.11(C)(1) requires at least two 20-amp small-appliance branch circuits for the kitchen.

  3. Which protection is required for receptacles serving kitchen countertop surfaces?

    Answer: GFCI protection

    NEC 210.8(A) requires GFCI protection for kitchen countertop receptacles because of water exposure.

  4. How high above the countertop may a receptacle be placed and still count as a required countertop receptacle under the NEC?

    Answer: 20 inches

    NEC 210.52(C) limits countertop receptacles to no more than 20 inches above the countertop.

  5. What type of 15- and 20-amp receptacles does the NEC require in new dwelling-unit kitchens?

    Answer: Tamper-resistant

    NEC 406.12 requires tamper-resistant receptacles in dwelling units to protect children.

  6. A countertop space of what minimum width requires a receptacle outlet under the NEC?

    Answer: 12 inches

    Each countertop wall space 12 inches or wider must have a receptacle.

  7. Besides GFCI, what additional protection does the current NEC generally require for kitchen branch circuits in dwellings?

    Answer: AFCI protection

    NEC 210.12 requires AFCI protection for kitchen branch circuits in dwelling units.

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Sources & references

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  1. nkba.org — Eligibility, fees, renewal, retake fee, test dates, exam information · verified Oct 2026