NYC ELECTRICIAN (NYC HEALTH +
HOSPITALS) FINAL EXAM QUESTIONS
AND VERIFIED ANSWERS
1. According to NYC Electrical Code and NFPA 99, which branch of the Essential Electrical
System (EES) provides power to task illumination and selected receptacles for patient care in
a Category 1 space?
A. Critical Branch
B. Life Safety Branch
C. Equipment Branch
D. Normal Branch
Answer: A
Conceptual Explanation: The Critical Branch is designed to supply power to task
illumination, fixed equipment, and selected receptacles related to patient care.
2. What is the minimum number of branch circuits required for each patient bed location in a
Category 1 (Critical Care) space per NEC 517.18(B)?
A. Two circuits, one from the normal branch and one from the critical branch
B. One circuit from the normal branch
C. Two circuits, both from the critical branch
,D. Three circuits from any branch
Answer: A
Conceptual Explanation: NEC 517.18(B) requires at least two branch circuits: one or
more from the critical branch and one or more from the normal system.
3. In NYC Health + Hospitals facilities, redundant grounding for patient care areas requires an
insulated copper equipment grounding conductor to be installed in which type of raceway?
A. Metallic raceway or cable armor that qualifies as a grounding conductor
B. Non-metallic tubing (ENT)
C. Flexible Metal Conduit (FMC) only
D. Schedule 40 PVC
Answer: A
Conceptual Explanation: NEC 517.13 requires both the metallic raceway (acting as an
equipment grounding conductor) and a separate insulated copper grounding conductor
(redundant grounding).
4. A Line Isolation Monitor (LIM) in an Isolated Power System (IPS) is required to alarm when
the total hazard current reaches what threshold?
A. 2 mA
B. 5 mA
C. 10 mA
, D. 20 mA
Answer: B
Conceptual Explanation: Per NFPA 99, a LIM must trigger an audible and visual alarm
when the total hazard current (THC) exceeds 5 milliamperes.
5. Which of the following wiring methods is NOT permitted for the Life Safety Branch in a
hospital under the NYC Electrical Code?
A. Type NM (Romex) cable
B. Electrical Metallic Tubing (EMT)
C. Rigid Metal Conduit (RMC)
D. Mineral-Insulated, Metal-Sheathed Cable (Type MI)
Answer: A
Conceptual Explanation: Type NM cable is prohibited in hospital construction for
essential electrical systems and most other areas due to durability and grounding
requirements.
6. What is the maximum time allowed for the Emergency Generator to start and pick up the
Life Safety and Critical branches upon loss of normal power?
A. 30 seconds
B. 60 seconds
C. 5 seconds
HOSPITALS) FINAL EXAM QUESTIONS
AND VERIFIED ANSWERS
1. According to NYC Electrical Code and NFPA 99, which branch of the Essential Electrical
System (EES) provides power to task illumination and selected receptacles for patient care in
a Category 1 space?
A. Critical Branch
B. Life Safety Branch
C. Equipment Branch
D. Normal Branch
Answer: A
Conceptual Explanation: The Critical Branch is designed to supply power to task
illumination, fixed equipment, and selected receptacles related to patient care.
2. What is the minimum number of branch circuits required for each patient bed location in a
Category 1 (Critical Care) space per NEC 517.18(B)?
A. Two circuits, one from the normal branch and one from the critical branch
B. One circuit from the normal branch
C. Two circuits, both from the critical branch
,D. Three circuits from any branch
Answer: A
Conceptual Explanation: NEC 517.18(B) requires at least two branch circuits: one or
more from the critical branch and one or more from the normal system.
3. In NYC Health + Hospitals facilities, redundant grounding for patient care areas requires an
insulated copper equipment grounding conductor to be installed in which type of raceway?
A. Metallic raceway or cable armor that qualifies as a grounding conductor
B. Non-metallic tubing (ENT)
C. Flexible Metal Conduit (FMC) only
D. Schedule 40 PVC
Answer: A
Conceptual Explanation: NEC 517.13 requires both the metallic raceway (acting as an
equipment grounding conductor) and a separate insulated copper grounding conductor
(redundant grounding).
4. A Line Isolation Monitor (LIM) in an Isolated Power System (IPS) is required to alarm when
the total hazard current reaches what threshold?
A. 2 mA
B. 5 mA
C. 10 mA
, D. 20 mA
Answer: B
Conceptual Explanation: Per NFPA 99, a LIM must trigger an audible and visual alarm
when the total hazard current (THC) exceeds 5 milliamperes.
5. Which of the following wiring methods is NOT permitted for the Life Safety Branch in a
hospital under the NYC Electrical Code?
A. Type NM (Romex) cable
B. Electrical Metallic Tubing (EMT)
C. Rigid Metal Conduit (RMC)
D. Mineral-Insulated, Metal-Sheathed Cable (Type MI)
Answer: A
Conceptual Explanation: Type NM cable is prohibited in hospital construction for
essential electrical systems and most other areas due to durability and grounding
requirements.
6. What is the maximum time allowed for the Emergency Generator to start and pick up the
Life Safety and Critical branches upon loss of normal power?
A. 30 seconds
B. 60 seconds
C. 5 seconds
