8/30/2021
Commercial Wiring Ch. 11-15 Flashcards | Quizlet
Commercial Wiring Ch. 11-15
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Commercial Wiring Ch. 11-15
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Terms in this set (65)
The owner is responsible to
provide power to these areas:
(HIE)
1. Heat for the common areas of the building.
2. Illumination for public areas such as hallways,
stairways, & public toilet rooms
3. Elevator
The lighting circuits that are
1. Continuous operation
considered to be the owner's
2. Automatic Control
responsibility can be divided
3. Manual control
into six groups according to
4. Photocell control
the method used to control the
5. Exit signs in a portion of the building
circuit. What are those groups?
6. Timed control
(CAMPET)
The lighting circuits that are
control the circuit
considered to be the owner's
responsibility can be divided
into six groups according to
the method used to __________.
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The luminaires installed
the11-15
Commercial
WiringforCh.
Commercial Wiring Ch. 11-15 Flashcards | Quizlet
continuous
Study
stairway to the second floor
and hallways are in
continuous/non-continuous
operation when the building is
occupied.
Why are the luminaires that are
Because those spaces have no windows
installed for the stairway to the
second floor and hallways in
continuous use when the
building is occupied?
The sump pump is an example
an automatic control system.
of equipment that is operated
by a _________ control system.
The photocell control device
light-sensitive cell; amplifier; relay
consists of a ________ cell and an
_____ that increases the signal
until it is sufficient to operate a
______ that controls the light.
What kind of feature is
An astronomic feature
extremely desirable in a
lighting control?
An astronomic feature
sunset; sunrise
provides _______ ON and ______
OFF that change automatically,
day by day, as the _____ and
_______ times change every day.
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Commercial Wiring Ch. 11-15 Flashcards | Quizlet
The pump motorWiring
of a sump
Commercial
Ch. 11-15
manual motor starter; float switch
Study
pump is protected by a
___________ ________ ___________, and is
controlled by a __________ __________.
What kind of high-efficiency
a "machine-room-less" elevator.
elevator is indicated in the
specifications?
In a "machine-room-less"
elevator shaft; elevator; wall
elevator, all the elevator lifting
mechanism is located in the
______________, and it is either on
the _______ or on the ________.
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The building's occupants will
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heating thermostat
each have a ________ located
within their particular area.
The circuit to the boiler's
optional standby power panel; so that the water will
circulating pump will be
continue to circulate if the utility power fails.
supplied from the _________ panel.
Why is it supplied from this
location?
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_____________ are to Wiring
be run from
Commercial
Ch. 11-15
Commercial Wiring Ch. 11-15 Flashcards | Quizlet
Separate feeders
Study
the main service equipment to
each of the areas of the
Commercial building.
In the Commercial Building,
panelboard; the area to be served
each feeder will terminate in a
___________, which generally will
be installed in __________.
In general, panelboards are
main feed busbars; vertically
constructed so the ______ _______
busbars run
vertically/horizontally for
nearly the height of the
panelboard.
When using a 3-phase supply,
six; three phases
the incremental number is ____.
this allows for a pole for each
of the _____ _______ on both sides
of the panelboard.
The feeder overcurrent
ampacity; conductor
protection is sized for the
_________ of the feeder____________.
The ________ gives the load/area
directory; nonelectrical
in a wording that would be
clear for ________ people to
decipher and identify the
circuit number for luminaires,
receptacles, appliances, or
equipment.
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Commercial Wiring Ch. 11-15 Flashcards | Quizlet
The reason for identifying
the 11-15
Commercial
Wiring Ch.
safety
Study
system voltages and phases is
for _________.
Most large commercial
480Y/277 volts & 208Y/120 volts
buildings use two voltages:
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brown, orange, yellow; gray
system are generally ____, _____,
and _____ for the ungrounded
conductors, and _____ for the
grounded conductor.
Do not confuse the term
room
working space with ____.
For system voltages of 0 to 150
3 feet
volts to ground, the minimum
depth of working space is _____.
All working spaces must allow
90 degree
for the opening of equipment
doors and hinged panels to at
least a ______ position.
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Working space height
is Ch. 11-15
Commercial
Wiring
6.5 feet
Study
required to not be less than
_______.
Access to and egress from
room itself
refer to the actual working
space requirements about
electrical equipment and not
to _______.
Dry-type transformers are
lighter in weight
widely used because they are
___________ than comparably rated
liquid-filled transformers.
The service point is defined in
Art. 100 as
the point of connection between the facilities and
the serving utility and the premises wiring. *Look at
the informational note, too.
The service point can be described as the point of
The informational note for the
demarcation between where the serving utility ends
service point definition in Art.
and the premises wiring begins. The serving utility
100 states
generally specifies the location of the service point
based on their conditions of service.
NEC 230.71 permits not more
six
than _____ disconnects to serve
as the building service
disconnecting means.
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Commercial Wiring Ch. 11-15 Flashcards | Quizlet
Commercial Wiring Ch. 11-15
A ground fault occurs
Study
ungrounded "hot"; grounded; grounded
when__________ conductor comes
into contact with a ________
surface or _____ equipment.
The lower the impedance, the
Higher
____ the current flow.
NEC 250.64C states that
spliced
grounding electrode
conductor generally are not
permitted to be _______
GFCI protection can be
circuit breakers; receptacles
attained using GFCI ______ or
GFCI _________.
NEC 110.16 has a requirement
qualified persons; serious hazard of arc flash events.
for placing a notice on certain
equipment to warn ______________
of ____________.
What kind of lighting is used in
high-efficiency energy-saving fluorescent lighting
the Commercial building?
and LED lighting; incandescent lamps
Very few _____ are used.
A lumen is the amount of light
time; area; distance; candela
received in a unit of _______ on a
unit ________ at a unit ___________
from the point source of one
_________.
CRI stands for
Color Rendering Index
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Commercial Wiring Ch. 11-15
What is CRI?
What is the light-producing
The ability of the lamp to portray objects as
Study
normally as possible.
a tungsten wire called the filament
element in an incandescent
lamp?
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Lamps are usually selected
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wattage
according to their _____ rating.
Describe what 65PAR38/FL
65-watt parabolic reflector flood, 38/8 inch
means
(4.75) diameter
The inside of the glass tube of
phosphor (a fluorescing material)
a fluorescent lamp is coated
with _________________.
Inside the tube of a fluorescent
evacuated; inert; mercury
lamp, the air is _________ and an
________ gas plus a small quantity
of ______ is released into the
tube.
The instant-start lamps require
single-pin bases
_____________.
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Commercial Wiring Ch. 11-15 Flashcards | Quizlet
The instant-startWiring
lamps areCh. 11-15
Commercial
slimline lamps
Study
generally called ____________.
The ballast limits the current
uncorrected; 40; 60; 5; unity; capacitor
through the lamp by providing
a coil with high reactance in
series with the lamp. An
inductive circuit of this type has
an _______ power factor of ____%
to ____%. However the power
factor can be corrected to
within ____% of ____ by the
addition of a ________.
What are LED's?
What could LED lighting be
Light Emitting Diodes
solid-state lighting
referred to as?
Beginning in the _______ edition
2008; luminaire
of the NEC, the term ________ is
used exclusively rather than
lighting fixture or some
variation of that term.
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Previous editionsWiring
of the NEC
Commercial
Ch. 11-15
Commercial Wiring Ch. 11-15 Flashcards | Quizlet
fixture
Study
used the term luminaire
followed by the term _________
(lighting fixture) in parenthesis
The installation of luminaires,
410
lighting outlets, and supports is
covered in Article _____.
Article 410 sets forth the basic
rough-in
requirements for the
installation (of luminaires,
lighting outlets, and supports,)
commonly referred to as the
___________.
According to NEC 410.36 B, the
bolts, screws, rivets
luminaires have to be securely
fastened to the ceiling
members using _____, _____, or
_____.
Type IC luminaires are
thermal insulation
permitted to be installed in
direct contact with ________________.
All recessed incandescent
factory-installed thermal protection
luminaires must be equipped
with ____________. NEC 410.115 C.
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NEC 410.115 C exceptions
are : 11-15
Commercial
Wiring Ch.
Commercial Wiring Ch. 11-15 Flashcards | Quizlet
concrete; temperatures; thermal
Study
All recessed incandescent
luminaires must be equipped
with factory-installed thermal
protection.
1. The only exceptions to the
rule in 410.115 C are:
if the luminaire is identified for
use and installed in ______________,
2. If the construction and
design of the luminaires are
designed such that ____________
would be no greater than if the
luminaires had __________
protection.
What two types of conductors
THWN-2 and THHN
have an insulation temperature
rating of 90 degrees celsius
and generally meet the
temperature requirement for
connecting luminaires?
For fluorescent and HID
volt-ampere; ballast
luminaires, the
_____________allowance is based on
the rating of the ___________.
NEC 410.16 addresses the
clothes closets
special requirements for
installing in _.
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Often a feeder serves
twoCh.
or 11-15
Commercial
Wiring
Commercial Wiring Ch. 11-15 Flashcards | Quizlet
Study
panelboards, junction box, wireway, panelboard
more panelboards, in which
case either a ______ or ____ is
installed or the feeder
connects to the first
panelboard and then is
extended to others.
The reason that 210.5(C)
system voltage(s); phases
requires that _______ and ______ be
identified, is safety.
Access to and egress from
working space
refer to the __________
requirements about electrical
equipment, not to the room
itself.
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