Low Voltage Journeyman) Complete Study
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What is the minimum 1 1/4 inches(NEC 300.4 A 1)
clearance to the edge of a
wood stud for a wire hole?
What is the minimum 1/4 inch
separation between a
class 1 fire alarm circuit
conductor and a class 2 or
class 3 circuit?
A basic alarm system will 2
have __ power sources.
,What is the minimum 2 Feet
required clearance between
a receiving antenna and 250
volt line not insulated?
The minimum clearance 2 Feet (NEC 810.13)
for an antenna to other
conductors is?
How far away must 2 inches
communications cables be
from electric, light, or power
conductors
what is the maximum blink 2 (NFPA 72 18.5.2.1)
rate on a strobe light per
second?
On a voice alarm system 2 (NFPA 72 24.4.1.2.1)
what is the minimum
number of cycles it has to
report an evacuation
procedure?
What is the minimum 3 1/2 feet or 42 inches
required height for a
propriety manual pull fire
alarm?
An overhead feeder must 3 Feet (NEC 225.19 B)
have a clearance of __ from
chimneys, radio, and
television antennas.
3 hours
The NEC classifies Continuous
Load as equipment running
at a maximum load of __
____?
, A continuous load is a load 3 hours or more
where the maximum current
is expected to continue for a
certain length of time. This
amount of time is?
The minimum head room 6.5 feet
of working space above
service equipment,
switchboards, panel
boards, or motor control
centers shall be at least:
What is the minimum 6 feet
required separation between
communication cables and
lighting conductors?
What is the minimum 6 feet
separation required between
coaxial cable in a CATV
system and lighting
conductors
On a radio antenna receiving 6 feet
station what is the minimum
clearance between lead-in
conductors and conductors
forming a part of a lightning
protection system?
8 Feet (NEC 250.5.2.5)
What is the minimum length
of a grounding rod in an
application of less than 50
volts?