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COMMERCIAL WIRING CH. 11-15 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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COMMERCIAL WIRING CH. 11-15 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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COMMERCIAL WIRING CH. 11-15QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
The owner is responsible to provide power to these areas: (HIE) - ANSWER 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) - ANSWER 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 __________. - ANSWER 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. - ANSWER 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? - ANSWER Because those spaces have no windows
The sump pump is an example of equipment that is operated by a _________ control system. - ANSWER
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. - ANSWER light-sensitive cell; amplifier; relay
What kind of feature is extremely desirable in a lighting control? - ANSWER An astronomic feature
An astronomic feature provides _______ ON and ______ OFF that change automatically, day by day, as
the _____ and _______ times change every day. - ANSWER sunset; sunrise
The pump motor of a sump pump is protected by a ___________ ________ ___________, and is
controlled by a __________ __________. - ANSWER manual motor starter; float switch
What kind of high-efficiency elevator is indicated in the specifications? - ANSWER 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 ________. - ANSWER elevator shaft; elevator; wall
The building's occupants will each have a ________ located within their particular area. - ANSWER
heating thermostat
The circuit to the boiler's circulating pump will be supplied from the _________ panel.
Why is it supplied from this location? - ANSWER 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. - ANSWER Separate feeders
In the Commercial Building, each feeder will terminate in a ___________, which generally will be
installed in __________. - ANSWER panelboard; the area to be served
In general, panelboards are constructed so the ______ _______ busbars run *vertically/horizontally* for
nearly the height of the panelboard. - ANSWER main feed busbars; vertically
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