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NEC Code General Requirements Flashcards

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Read the first 7 NEC Code General Requirements flashcards as text

  1. NEC 110.14(C) addresses temperature limitations of conductors at terminations. For conductors with 75°C rated insulation connected to a 60°C rated terminal, what temperature rating governs the ampacity?

    Answer: 60°C, since the lower-rated component governs

    NEC 110.14(C) requires that the ampacity be determined based on the lowest temperature rating of any connected component—in this case, the 60°C terminal.

  2. According to NEC 110.11, conductors and equipment must be protected against what environmental conditions if the use is not approved for that condition?

    Answer: Deteriorating agents such as chemicals, moisture, and corrosive environments

    NEC 110.11 requires that conductors and equipment not suitable for deteriorating agents (chemicals, moisture, corrosives) be protected when exposed to such conditions.

  3. What does NEC 110.26(A)(1) Condition 2 specify for working space depth when there are exposed live parts on one side and grounded parts on the other?

    Answer: 3.5 feet

    NEC 110.26(A)(1) Condition 2 requires 3.5 feet of working space depth when live parts are on one side and grounded parts are on the other.

  4. Under NEC 110.26(D), what must be provided to ensure illumination for all working spaces about electrical equipment?

    Answer: Illumination for all working spaces about service equipment, switchboards, switchgear, panelboards, or motor control centers

    NEC 110.26(D) requires that illumination be provided for all working spaces about service equipment, switchboards, switchgear, panelboards, or motor control centers.

  5. NEC 110.15 requires that single-phase, 3-wire systems have the high-leg conductor identified. What color must be used for this identification?

    Answer: Orange

    NEC 110.15 requires the high leg of a 3-phase, 4-wire delta system to be identified with orange color.

  6. According to NEC 110.18, electrical equipment parts that are to be connected by wiring shall be capable of what?

    Answer: Accepting terminations of the conductors used

    NEC 110.18 requires that electrical equipment parts designed for field connection shall be capable of accepting the type and size of conductors used.

  7. What does NEC 110.26(A)(1) Condition 3 specify for working space depth when there are exposed live parts on both sides of the working space?

    Answer: 5 feet

    NEC 110.26(A)(1) Condition 3 requires 4 feet of working space depth when live parts are exposed on both sides of the working space.