CME Electrical Codes & Standards 3

Question 1

What NEC article covers the installation requirements for generators?

Accepted Answer

Article 445

Answer

NEC Article 445 specifically addresses generators, including their overcurrent protection and conductor sizing.

Question 2

Per NEC 700.12, an emergency system's alternate power source must be capable of supplying power within how many seconds of normal power failure?

Accepted Answer

10 seconds

Answer

NEC 700.12 requires emergency systems to restore power within 10 seconds of normal supply failure.

Question 3

Under NEC Article 517, what type of grounding system is required for patient care areas in healthcare facilities?

Accepted Answer

Equipment grounding with isolated power systems in wet locations

Answer

NEC 517.20 requires isolated power systems (IPS) in wet procedure locations within patient care areas to prevent electrical hazards.

Question 4

What is the minimum burial depth for direct-buried 120V residential branch circuit wiring using UF cable under a residential driveway?

Accepted Answer

24 inches

Answer

NEC Table 300.5 requires direct-buried UF cable under driveways used for residential vehicle traffic to be buried at least 24 inches.

Question 5

Which code body publishes NFPA 72, the National Fire Alarm and Signaling Code?

Accepted Answer

NFPA (National Fire Protection Association)

Answer

NFPA 72 is published by the National Fire Protection Association and governs fire alarm system design and installation.

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