Journeyman Electrician Exam (NEC)Special Occupancies, Equipment, and ConditionsEasy
A newly constructed health care facility is installing luminaires in a patient care area where medical personnel interact directly with the patient. What type of branch circuit overcurrent protection is generally required for these luminaires, according to NEC?
- AIdentified as being suitable for the purpose
- BStandard thermal-magnetic circuit breakers
- CInverse time circuit breakers with adjustable trip settings
- DFuses with a time-delay characteristic
Show answer & explanationAnswer & explanation
Correct answer: A. Identified as being suitable for the purpose
NEC 517.16 requires that branch-circuit overcurrent devices serving patient care areas be identified as being suitable for the purpose. This ensures the reliability and safety of the electrical system in critical medical environments.
Why the other options are wrong
- B. Standard thermal-magnetic circuit breakers may not meet the specific identification requirements for patient care areas.
- C. While inverse time breakers are common, the key is their identification for the specific application, not just adjustable settings.
- D. Fuses can be used, but like circuit breakers, they must be identified as suitable for the specific application in patient care areas.
Healthcare Patient Area OCPD
Overcurrent protective devices (OCPDs) for branch circuits serving patient care areas in healthcare facilities must be specifically identified as suitable for this critical application.
- Applies to patient care areas (e.g., operating rooms, patient rooms).
- Ensures enhanced safety and reliability.
- NEC 517.16 is the governing article.
Memory trick: Healthcare OCPDs: Always IDENTIFIED, never just generalized.