Journeyman Electrician’s Exam Journeyman Electrician's Low Voltage Systems 2

Question 1

NEC Article 760 covers the installation of wiring and equipment for which type of system?

Accepted Answer

Fire alarm systems

Answer

Emergency and standby power systems

Answer

Security and burglar alarm systems

Answer

Nurse call and intercom systems

Question 2

What does the cable designation 'FPLP' indicate on a fire alarm cable?

Accepted Answer

Fire Power Limited Plenum

Answer

Fire Protective Limited Power

Answer

Fireproof Power Line Protected

Answer

Fire-Rated Power Loop Protected

Question 3

Non-power-limited fire alarm (NPLFA) circuits must be installed using wiring methods that comply with:

Accepted Answer

NEC Article 300 and applicable ampacity tables for power wiring

Answer

NEC Article 725 Class 2 installation methods

Answer

Only listed NPLFA cable installed exposed on surfaces

Answer

PVC conduit exclusively for all building types

Question 4

Per NEC 760.49, what is the minimum conductor size for non-power-limited fire alarm (NPLFA) circuit conductors?

Accepted Answer

18 AWG copper

Answer

22 AWG copper

Answer

14 AWG copper

Answer

12 AWG copper

Question 5

Per NEC Article 760, what equipment requirement applies to all fire alarm system wiring and devices?

Accepted Answer

Equipment and wiring must be listed for fire alarm service

Answer

Must be installed only by licensed fire alarm contractors

Answer

All wiring must be enclosed in metal raceways throughout the building

Answer

Only a dedicated fire alarm transformer may supply power to the system

Question 6

When power-limited fire alarm (PLFA) cables are installed in an air-handling plenum space, which cable type is required?

Accepted Answer

FPLP

Answer

FPL

Answer

FPLR

Answer

Any listed fire alarm cable is permitted in plenum spaces

Question 7

Power-limited fire alarm (PLFA) circuit cables are permitted to be installed exposed on the surface of walls and ceilings provided they are:

Accepted Answer

Not subject to physical damage

Answer

Enclosed in a listed raceway at all times

Answer

No more than 10 feet in exposed length

Answer

Separated from power conductors by at least 6 inches at all points