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Practice questions for this set
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Secondary power supplies for an emergency voice/alarm communication fire
alarm system shall be capable of operating for minimum of ___ of standby
followed by ___ of alarm.
Choose matching definition
1 1 hrs & 30 mins 2 48 hrs & 10 mins
2
3 6 hrs & 5 mins 4 24 hrs & 15 mins
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Terms in this set (148)
,When testing a water level rises or falls over 3 inches
supervisory switch serving a
pressure tank a signal shall
indicate if the water level
_____________from the
required level
(NFPA 72, Table 14.4.3.2 17
(j) (4)
If combination the visible appliance
audible/visible appliances
are installed the location of
the installed appliance shall
be determined by the
requirements of _______.
(Nfpa 72 18.4.8.1)
What is the maximum 26
number of 12 gauge THHN
wires that can be installed in
1" EMT?
(Nec Annex C tables)
150 ohms
Two resistors are connected
in parallel. R1 =
300 Ohms, R2 = 300
Ohms. What is their
equivalent resistance?
, A Room is 200' long and 150' 12
wide and the 8' high ceiling
is smooth and flat. A spot
type heat detector has been
selected that is listed for a
50' maximum spacing
between detectors.
According to NFPA 72 how
many detectors will be
needed to protect this
room? x =
According to NFPA 72 the Two detectors or more on each initiating device circuit
minimum number of
restorable fixed temperature
spot type heat detectors
that must be tested during
each annual test is?
(NFPA 72 14.4.4.5.1)
According to NFPA 72 how 6
many spot type heat
detectors are required for a
space that is 80' long and 55
floor wide with a smooth 10'
ceiling? the detector is listed
for a
maximum space between
detectors of 30'
What color code White (NFPA 72, Table 17.6.2.1)
requirement for a spot type
heat detector rated at 200 ゚
F