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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. According to NEC Article 110, what is the minimum working space depth required in front of electrical equipment rated 0-150 volts to ground where there are exposed live parts on one side and no live or grounded parts on the other?

    Answer: 3 feet

    NEC 110.26(A)(1) Condition 1 requires a minimum working space depth of 3 feet for equipment rated 0-150 volts to ground.

  2. Under NEC 110.12, electrical equipment must be installed in a neat and workmanlike manner. Which of the following would be a violation of this requirement?

    Answer: Leaving excess wire bundled loosely inside a panel

    NEC 110.12 requires workmanlike installation; bundled excess wire stuffed loosely in a panel is not considered neat or professional.

  3. What does NEC 110.3(B) require regarding the installation of listed or labeled equipment?

    Answer: Equipment must be installed and used in accordance with any instructions included in the listing or labeling

    NEC 110.3(B) states that listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling.

  4. NEC 110.26(A)(3) specifies the minimum headroom for working spaces about electrical equipment. What is the minimum headroom required?

    Answer: 6 feet

    NEC 110.26(A)(3) requires a minimum headroom of 6 feet, or the height of the equipment, whichever is greater.

  5. According to NEC 110.14, when conductors of different metals are connected in a device, what must the device be suitable for?

    Answer: Use with each metal connected

    NEC 110.14 requires that connectors and terminals for conductors of different metals be identified for use with each metal to prevent galvanic corrosion.

  6. What is the purpose of the 'interrupting rating' requirement found in NEC 110.9?

    Answer: To ensure protective devices can safely interrupt the maximum available fault current

    NEC 110.9 requires that overcurrent protective devices have an interrupting rating sufficient for the nominal circuit voltage and current that is available at the line terminals.

  7. NEC 110.22 requires that each disconnecting means be legibly marked. Which of the following is NOT required by this section?

    Answer: The manufacturer's name on the disconnect

    NEC 110.22 requires identification of purpose but does not require the manufacturer's name to be marked on the disconnecting means.