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Special Occupancies and Equipment Flashcards

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  1. NEC 700.4 requires emergency systems to be tested at intervals not exceeding:

    Answer: 30 days

    NEC 700.4(B) requires emergency systems to be tested at least every 30 days to ensure reliable operation during life-safety emergencies.

  2. Under NEC 690.31(B), PV source and output circuit conductors must be identified at:

    Answer: All points of termination, connection, and splices

    NEC 690.31(B) requires DC PV conductors to be identified at all termination, connection, and splice points to prevent dangerous errors during installation and maintenance.

  3. Per NEC 625.41, EV charging equipment (EVSE) must be rated at not less than what percentage of the maximum load?

    Answer: 125%

    NEC 625.41 requires EVSE to be rated at not less than 125% of the maximum load because EV charging is treated as a continuous load.

  4. NEC 695.3 requires fire pump motors to be supplied from:

    Answer: A reliable power source such as a dedicated service or tap ahead of the main disconnect

    NEC 695.3 requires fire pumps to be powered from a reliable source, typically a dedicated service or a connection ahead of other protective devices, ensuring operation even if building power is shut off.

  5. NEC 694.66 requires utility-interactive wind electric systems to include:

    Answer: Anti-islanding protection to prevent energizing the grid during a utility outage

    NEC 694.66 requires anti-islanding protection so that utility-interactive wind systems automatically disconnect from the grid during a utility outage, protecting utility workers.

  6. NEC Article 708 Critical Operations Power Systems (COPS) apply to facilities that:

    Answer: Protect national security, emergency communications, or continuity of government

    NEC Article 708 applies to facilities designated as critical operations power systems where loss of power could disrupt national security, public safety communications, or government continuity.

  7. How do Legally Required Standby Systems under NEC Article 701 differ from Emergency Systems under Article 700?

    Answer: They are required by law for specific occupancies but serve loads less critical than Article 700 life-safety loads

    NEC Article 701 covers standby systems mandated by governmental authority for specific occupancies, but serving loads such as heating and industrial processes rather than direct life-safety loads covered by Article 700.