Emergency & Standby Systems Flashcards
7 cards from real CEI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Emergency & Standby Systems flashcards as text
Which authority is responsible for classifying which loads belong on an emergency system versus a legally required standby system?
Answer: The authority having jurisdiction (AHJ)
NEC 700.3 assigns the AHJ responsibility for approving emergency system classification and accepting tests of the installation.
Emergency systems must have a means to test the system while still connected to normal power. This is accomplished by:
Answer: A transfer test switch that simulates loss of normal power
NEC 700.3(C) requires a transfer test switch to allow testing of the emergency system without interrupting normal power.
According to NEC 700.12(F), a generator used as the emergency source must be equipped with a means to prevent its use for which of the following without AHJ approval?
Answer: Serving optional loads before emergency loads are energized
NEC 700.12(F) requires that emergency generators not be used to serve optional standby loads unless permitted by the AHJ, ensuring emergency loads have priority.
In a healthcare facility, critical branch and equipment branch circuits are typically served by:
Answer: Separate transfer switches from the essential electrical system
NFPA 99 and NEC 517.30 require the critical branch and equipment branch of a healthcare essential electrical system to be served by separate transfer switches.
A remote annunciator for an emergency generator is required to indicate at minimum which condition?
Answer: Generator running and loss of normal power
NFPA 110 and NEC 700.6 require remote annunciators to indicate at minimum that the generator is running and that normal power has been lost.
What does NEC 700.10(D) say about emergency wiring that passes through a non-fire-rated space?
Answer: It must be protected by a listed electrical circuit protective system or installed in fire-rated construction
NEC 700.10(D) requires emergency feeders in non-fire-rated assemblies to be protected by a listed electrical circuit protective system providing at least 2-hour fire resistance.
Which NEC article covers health care essential electrical systems (EES)?
Answer: Article 517
NEC Article 517 covers health care facilities, including the essential electrical system requirements for hospitals, nursing homes, and other healthcare occupancies.