FA5 Flashcards
Which article of the NEC covers burglary system wiring?
a. Article 725 b. Article 727
c. Article 760 d. none of the above
a. Article 725
Non-power-limited circuits operate with voltages up to ____.
a. 150 V b. 300 V
c. 600 V d. 750V
c. 600 V
Tables ____ provide limitations for power-limited circuits.
a. 10A and 10B b. 11A and 11B
c. 12A and 12B d. 13A and 13B
c. 12A and 12B
Generally speaking, power-limited fire alarm circuits operate at?.
Select one:
a. less than 50 VA
b. more than 50 A
c. less than 100 VA
d. more than 100 VA
c. less than 100 VA
Power-limited wiring requirements are found in Part ___ of Article 760.
a. I b. II
c. III d. IV
c. III
Power-limited equipment is determined to meet the limitations of ______________.
a. NFPA 72 b. the installer
c. the manufacturer d. the testing laboratory
d. the testing laboratory
Underground power-limited copper fire alarm circuits that extend outside the building must comply with ____.
a. Parts II, III and IV of Article 800 and Part I of Article 300
b. Parts II, III and IV of Article 300 or Part I of Article 800
c. Parts II, III and IV of Article 800 or Part I of Article 225
d. Parts II, III and IV of Article 300 or Part I of Article 225
a. Parts II, III and IV of Article 800 and Part I of Article 300
Are fire alarm cables permitted to be laid directly on top of suspended ceiling tiles? explain
No - they cannot be damaged or lay in the way of normal building use.
The inside of a conduit installed under a concrete slab at grade level is considered a ___ location.
a. corrosive b. damp
c. dry d. wet
d. wet
What cable type is suitable for two hours of direct attack by fire?
Circuit integrity (CI) cable and mineral integrity (MI)
Fire alarm circuit survivability is required for ____
a. complete evacuation
b. partial evacuation or relocation
c. both of the above
d. neither of the above
b. partial evacuation or relocation
Circuit integrity (CI) cable can be spliced between the controls and the zone it serves. True or False
False
Power-limited circuits may be wired using ____.
a. Chapter 3 wiring methods
b. non-power-limited wiring methods
c. power-limited wiring methods
d. all of the above
d. all of the above
Assuming that there are no approved separations between conductors, which of the following conductors are permitted in the same cable or raceway as power-limited circuit conductors?
a. Class 1 b. Class 2
c. non-power-limited d. none of the above
B. Class 2
Type NPLFR cable is permitted to be wired exposed in a plenum space. Explain
No - it’s a riser and not allowed by code. You can ues it as NPLF requirements.
Failure to remove conduit burrs usually results in ____
ground fault
The proper non-power-limited cable for riser use is __
a. FPLP b. FPLR
c. NPLFP d. NPLFR
d. NPLFR
Describe the conditions under which abandoned fire alarm cables are permitted to remain in a building. Why?
If they are tagged for future use - it’s the code
Non-power-limited circuits may be wired using what methods?
Cables below 7’ must be protected.
Exposed cables must be supported - no more than 18”
Pass through floor or wall must be protected by raceway.
Cable type NPLF, NPLFR, and NPLFP
Where non-power-limited wiring is installed exposed, it must be mechanically protected within ___ of the finished floor.
a. 3’ b. 5’
c. 7’ d. 9’
c. 7’
Fire alarm circuit conductor above a suspended ceiling may use the same support wires that support the ceiling grid. True or False
False
Fire alarm cables are permitted to be strapped to other conduit. True or False
False
The location of unit resistances for copper wire is found in ___ of the NEC.
a. Table 3 b. Table 5
c. Table 8 d. Table 12A
a. Table 8
An 18 AWG uncoated solid copper has a unit resistance of ____ per 1,000 feet.
a. 25.5 Ω b. 7.77 Ω
c. 26.5 Ω d. 8.08 Ω
b. 7.77 Ω
A circuit that is 1,500 feet from the control unit to the last device will have a loop resistance of ___ when an 18 AWG uncoated solid copper is used.
a. 11.625 Ω b. 23.310 Ω
c. 38.25 Ω d. 76.53 Ω
b. 23.310 Ω
What is the length of a 16 AWG solid coated copper conductor having a resistance of 23.5 ohms?
a. 4,626’ b. 4,442’
c. 8,884’ d. 9,252’
a. 4,626’
Firestopping materials are always listed. True or False
false
A firestopping classification having a minimum F rating of ___ must be used on a two-hour rated firewall to resist the passage of flames.
a. 90 b. 100
c. 110 d. 120
d. 120
NEC ___ requires electrical penetrations to be firestopped.
a. 320.21 b. 300.21
c. 321.20 d. 321.21
b. 300.21
A firestopping material that expands when heated is referred to as _____.
a. classified b. dynamic
c. intumescent d. static
d. intumescent
A cable tray is considered as a ____ penetration.
a. dynamic b. restricted
c. static d. T-rated
a. dynamic
Which of the following documents can assist in determining if an assembly is two-hour rated?
a. Architectural floor plans
b. National Electrical Code
c. UL Fire Resistance Directory
d. UL 1971
UL Fire Resistance Directory
The inside of a raceway that is in direct contact with the Earth is a?location.
Select one:
a. Damp
b. Dry
c. Hazardous
d. Wet
D. Wet
Where run vertically, Annex A ofNFPA 72recommends a separation of one foot for the outgoing and return conductors of?circuits.
Select one:
a. Class A, B
b. Class A, C
c. Class A, X
d. Class B, X
c. Class A, X
