NYC ELECTRICIAN (NYC HEALTH +
HOSPITALS) FINAL EXAM STUDY
GUIDE QUESTIONS AND VERIFIED
ANSWERS
1. According to NEC 517.31, what is the maximum time allowed for the Life Safety and Critical
branches of the Essential Electrical System to be automatically restored after power failure?
A. 5 seconds
B. 15 seconds
C. 10 seconds
D. 30 seconds
Answer: C
Conceptual Explanation: NEC 517.31(G) requires that the Life Safety and Critical
branches be restored to operation within 10 seconds of power loss.
2. The Line Isolation Monitor (LIM) in an Isolated Power System (IPS) is designed to alarm
when the total hazard current reaches what threshold?
A. 5 mA
B. 10 mA
C. 2 mA
,D. 20 mA
Answer: A
Conceptual Explanation: The LIM must be calibrated to alarm when the total hazard
current (THC) exceeds 5 mA.
3. In a Patient Care Vicinity, what are the specific horizontal and vertical dimensions defined
by NEC 517.2?
A. 3 feet horizontally and 6 feet vertically
B. 6 feet horizontally and 7.5 feet vertically
C. 5 feet horizontally and 8 feet vertically
D. 8 feet horizontally and 9 feet vertically
Answer: B
Conceptual Explanation: The Patient Care Vicinity is defined as a space within 6 feet of
the bed/table and extending 7.5 feet above the floor.
4. What is the primary requirement for grounding receptacles in patient care areas to satisfy
‘redundant grounding’ rules?
A. A single insulated copper ground wire in PVC conduit
B. An insulated copper ground wire and a metallic raceway system or cable armor qualified
as an EGC
C. Two separate green ground wires inside a liquid-tight flexible conduit
, D. A bare copper wire wrapped around the outside of the conduit
Answer: B
Conceptual Explanation: NEC 517.13 requires two independent grounding paths: the
metallic raceway/cable armor and an insulated copper equipment grounding conductor.
5. Which branch of the Essential Electrical System (EES) provides power for task illumination
and receptacles in the Nurse Station?
A. Equipment Branch
B. Life Safety Branch
C. Normal Branch
D. Critical Branch
Answer: D
Conceptual Explanation: Receptacles and task lighting in nurse stations are categorized
under the Critical Branch.
6. NYC Electrical Code requires which wiring method for feeders supplying emergency
systems in high-rise healthcare facilities?
A. Type NM Cable
B. Standard Electrical Metallic Tubing (EMT) without protection
C. Rigid Metal Conduit (RMC) or IMC encased in 2 inches of concrete
D. Flexible Metallic Conduit (FMC) in lengths over 10 feet
HOSPITALS) FINAL EXAM STUDY
GUIDE QUESTIONS AND VERIFIED
ANSWERS
1. According to NEC 517.31, what is the maximum time allowed for the Life Safety and Critical
branches of the Essential Electrical System to be automatically restored after power failure?
A. 5 seconds
B. 15 seconds
C. 10 seconds
D. 30 seconds
Answer: C
Conceptual Explanation: NEC 517.31(G) requires that the Life Safety and Critical
branches be restored to operation within 10 seconds of power loss.
2. The Line Isolation Monitor (LIM) in an Isolated Power System (IPS) is designed to alarm
when the total hazard current reaches what threshold?
A. 5 mA
B. 10 mA
C. 2 mA
,D. 20 mA
Answer: A
Conceptual Explanation: The LIM must be calibrated to alarm when the total hazard
current (THC) exceeds 5 mA.
3. In a Patient Care Vicinity, what are the specific horizontal and vertical dimensions defined
by NEC 517.2?
A. 3 feet horizontally and 6 feet vertically
B. 6 feet horizontally and 7.5 feet vertically
C. 5 feet horizontally and 8 feet vertically
D. 8 feet horizontally and 9 feet vertically
Answer: B
Conceptual Explanation: The Patient Care Vicinity is defined as a space within 6 feet of
the bed/table and extending 7.5 feet above the floor.
4. What is the primary requirement for grounding receptacles in patient care areas to satisfy
‘redundant grounding’ rules?
A. A single insulated copper ground wire in PVC conduit
B. An insulated copper ground wire and a metallic raceway system or cable armor qualified
as an EGC
C. Two separate green ground wires inside a liquid-tight flexible conduit
, D. A bare copper wire wrapped around the outside of the conduit
Answer: B
Conceptual Explanation: NEC 517.13 requires two independent grounding paths: the
metallic raceway/cable armor and an insulated copper equipment grounding conductor.
5. Which branch of the Essential Electrical System (EES) provides power for task illumination
and receptacles in the Nurse Station?
A. Equipment Branch
B. Life Safety Branch
C. Normal Branch
D. Critical Branch
Answer: D
Conceptual Explanation: Receptacles and task lighting in nurse stations are categorized
under the Critical Branch.
6. NYC Electrical Code requires which wiring method for feeders supplying emergency
systems in high-rise healthcare facilities?
A. Type NM Cable
B. Standard Electrical Metallic Tubing (EMT) without protection
C. Rigid Metal Conduit (RMC) or IMC encased in 2 inches of concrete
D. Flexible Metallic Conduit (FMC) in lengths over 10 feet
