Commercial Wiring Ch. 11-15 Exam Questions and Answers Latest Update 2025-2026
The owner is responsible to provide power to these areas: (HIE) - Answers 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 considered to be the owner's responsibility can be divided into six
groups according to the method used to control the circuit. What are those groups? (CAMPET) -
Answers 1. Continuous operation
2. Automatic Control
3. Manual control
4. Photocell control
5. Exit signs in a portion of the building
6. Timed control
The lighting circuits that are considered to be the owner's responsibility can be divided into six
groups according to the method used to __________. - Answers control the circuit
The luminaires installed for the stairway to the second floor and hallways are in
*continuous/non-continuous* operation when the building is occupied. - Answers continuous
Why are the luminaires that are installed for the stairway to the second floor and hallways in
continuous use when the building is occupied? - Answers Because those spaces have no
windows
The sump pump is an example of equipment that is operated by a _________ control system. -
Answers an automatic control system.
The photocell control device consists of a ________ cell and an _____ that increases the signal
until it is sufficient to operate a ______ that controls the light. - Answers light-sensitive cell;
amplifier; relay
What kind of feature is extremely desirable in a lighting control? - Answers An astronomic
feature
An astronomic feature provides _______ ON and ______ OFF that change automatically, day by
day, as the _____ and _______ times change every day. - Answers sunset; sunrise
, The pump motor of a sump pump is protected by a ___________ ________ ___________, and is
controlled by a __________ __________. - Answers manual motor starter; float switch
What kind of high-efficiency elevator is indicated in the specifications? - Answers a "machine-
room-less" elevator.
In a "machine-room-less" elevator, all the elevator lifting mechanism is located in the
______________, and it is either on the _______ or on the ________. - Answers elevator shaft;
elevator; wall
The building's occupants will each have a ________ located within their particular area. - Answers
heating thermostat
The circuit to the boiler's circulating pump will be supplied from the _________ panel.
Why is it supplied from this location? - Answers optional standby power panel; so that the water
will continue to circulate if the utility power fails.
_____________ are to be run from the main service equipment to each of the areas of the
Commercial building. - Answers Separate feeders
In the Commercial Building, each feeder will terminate in a ___________, which generally will be
installed in __________. - Answers panelboard; the area to be served
In general, panelboards are constructed so the ______ _______ busbars run
*vertically/horizontally* for nearly the height of the panelboard. - Answers main feed busbars;
vertically
When using a 3-phase supply, the incremental number is ____. this allows for a pole for each of
the _____ _______ on both sides of the panelboard. - Answers six; three phases
The feeder overcurrent protection is sized for the _________ of the feeder____________. - Answers
ampacity; conductor
The ________ gives the load/area in a wording that would be clear for ________ people to decipher
and identify the circuit number for luminaires, receptacles, appliances, or equipment. - Answers
directory; nonelectrical
The reason for identifying the system voltages and phases is for _________. - Answers safety
Most large commercial buildings use two voltages: - Answers 480Y/277 volts & 208Y/120 volts
Conductors for 480Y/277-volt system are generally ____, _____, and _____ for the ungrounded
conductors, and _____ for the grounded conductor. - Answers brown, orange, yellow; gray
Do not confuse the term working space with ____. - Answers room
The owner is responsible to provide power to these areas: (HIE) - Answers 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 considered to be the owner's responsibility can be divided into six
groups according to the method used to control the circuit. What are those groups? (CAMPET) -
Answers 1. Continuous operation
2. Automatic Control
3. Manual control
4. Photocell control
5. Exit signs in a portion of the building
6. Timed control
The lighting circuits that are considered to be the owner's responsibility can be divided into six
groups according to the method used to __________. - Answers control the circuit
The luminaires installed for the stairway to the second floor and hallways are in
*continuous/non-continuous* operation when the building is occupied. - Answers continuous
Why are the luminaires that are installed for the stairway to the second floor and hallways in
continuous use when the building is occupied? - Answers Because those spaces have no
windows
The sump pump is an example of equipment that is operated by a _________ control system. -
Answers an automatic control system.
The photocell control device consists of a ________ cell and an _____ that increases the signal
until it is sufficient to operate a ______ that controls the light. - Answers light-sensitive cell;
amplifier; relay
What kind of feature is extremely desirable in a lighting control? - Answers An astronomic
feature
An astronomic feature provides _______ ON and ______ OFF that change automatically, day by
day, as the _____ and _______ times change every day. - Answers sunset; sunrise
, The pump motor of a sump pump is protected by a ___________ ________ ___________, and is
controlled by a __________ __________. - Answers manual motor starter; float switch
What kind of high-efficiency elevator is indicated in the specifications? - Answers a "machine-
room-less" elevator.
In a "machine-room-less" elevator, all the elevator lifting mechanism is located in the
______________, and it is either on the _______ or on the ________. - Answers elevator shaft;
elevator; wall
The building's occupants will each have a ________ located within their particular area. - Answers
heating thermostat
The circuit to the boiler's circulating pump will be supplied from the _________ panel.
Why is it supplied from this location? - Answers optional standby power panel; so that the water
will continue to circulate if the utility power fails.
_____________ are to be run from the main service equipment to each of the areas of the
Commercial building. - Answers Separate feeders
In the Commercial Building, each feeder will terminate in a ___________, which generally will be
installed in __________. - Answers panelboard; the area to be served
In general, panelboards are constructed so the ______ _______ busbars run
*vertically/horizontally* for nearly the height of the panelboard. - Answers main feed busbars;
vertically
When using a 3-phase supply, the incremental number is ____. this allows for a pole for each of
the _____ _______ on both sides of the panelboard. - Answers six; three phases
The feeder overcurrent protection is sized for the _________ of the feeder____________. - Answers
ampacity; conductor
The ________ gives the load/area in a wording that would be clear for ________ people to decipher
and identify the circuit number for luminaires, receptacles, appliances, or equipment. - Answers
directory; nonelectrical
The reason for identifying the system voltages and phases is for _________. - Answers safety
Most large commercial buildings use two voltages: - Answers 480Y/277 volts & 208Y/120 volts
Conductors for 480Y/277-volt system are generally ____, _____, and _____ for the ungrounded
conductors, and _____ for the grounded conductor. - Answers brown, orange, yellow; gray
Do not confuse the term working space with ____. - Answers room
