Solution and Answer Guide Electrical Wiring
Commercial 18th Edition by Phil Simmons, Ray C.
Mullin, Mark Ode.
The purpose of the NEC is the practical safeguarding of __ from hazards
arising from the use of electricity. - ANSWER-Peoples and buildings
Annex H in the NEC - ANSWER-Is to used for information on unless
specifically adopted by the local AHJ
A continuous load is any load that expected to operate for - ANSWER-3
hours or more.
To assist in the proper application of the NEC a term that appears in
more than one article is defined in - ANSWER-Article 100
A door chime is an example of a device - ANSWER-False
Which of the following statements is true for an individual branch circuit
that is run in a conduit with other circuits? - ANSWER-It can charge a
neutral with another circuit
The exact code reference that requires electrical equipment to be
securely fastened to the surface on which it is mounted is - ANSWER-
110.13(A)
The NEC permits the attachment cord and plug that is attached to an air
compressor to be used as the disconnecting means. How does section
100.22 require that this disconnecting means be identified? - ANSWER-
It's purpose is obvious and not required to be marked.
,B-phase on a 120/240 volt 3-ph, 4-wire system is called the ___ leg. -
ANSWER-High stinger wild.
Section __ in the NEC specifies that all 120-volt receptacles in the
kitchen of a cafeteria are to be gfci protected - ANSWER-210.8(B)(2)
How many 20-amp kitchen countertop Receptacle - ANSWER-0
In NEC article 500.8, equipment marked for use in a class 1 locations
and has a marked temperature classification of T3B is suitable for use in
environments with a maximum surface temperature of - ANSWER-329F
Protection against __ is addressed by the requirements in the NEC -
ANSWER-Fault currents effects, Thermal, Electric shock.
Which of the following installations Are covered by the NEC? -
ANSWER-None of the above
Is the conduit between the lighting peoples covered by the NEC? The
street lightning and conduit were installed in the utility easement as
shown in the drawing a the right and is under the control of CenterPoint
energy.(utility company) - ANSWER-No.
Chapter 8 in the nec covers ___ and is independent of the other nec
chapters. Provisions in other chapters do not apply unless directly
referenced in chapter 8 - ANSWER-Communication systems
The authority having jurisdiction has the responsibility - ANSWER-For
enforcing the NEC, For approving equipment installations, also for
granting special permission
Annex ___ in the NEC contains examples of load calculations for
dwellings - ANSWER-D
,How long does something need to run to be a continuous load -
ANSWER-3 hours
___ equipment is constructed so that water will not enter it. - ANSWER-
Watertight
A 1900 (4_square or 4x4 square) box with a cover that is installed above
a drywall ceiling is considered - ANSWER-Not accessible
A fluorescent luminaire is an example of a device - ANSWER-False
The illuminated marquee sign for a theatre would be considered to be a
___ load - ANSWER-Continuous
If a motor and the disconnecting means ( safety switch) are located in
the same room and 60 feet apart, these___ considered to be within sight
(of each other) per the NEC - ANSWER-Are not
Which of the following conductor materials are recognized by the NEC -
ANSWER-Aluminum, copper, copper-clad aluminum (all of these)
Improper electrical terminations lead to increased - ANSWER-Circuit
resistance, also voltage dropped across the terminations
Some wire nuts are listed for direct burial underground - ANSWER-
True
Per section 110.26(A)(1) in the NEC, where the wall opposite a panel
board is a metal door condition ___ applies to the clearance
requirements - ANSWER-2
The neutral of an electrical system is always carrying the unbalanced
current of that system - ANSWER-True
, The NEC permits the insulation for an ungrounded conductor to be
___in color. - ANSWER-Anything that isn't green white or gray
All 120- volt kitchen receptacles in the kitchen of a school cafeteria are
required by the NEC to be GFCI protected - ANSWER-True
Refer to NEC 500.8 generally, equipment for use in hazardous locations
shall be marked to show the environment for which it has been
evaluated. Equipment that is not marked to indicate a division or is
marked as division 1 is ____ - ANSWER-Suitable for both divisions 1
and 2
The class and material group classification where combustible metal
dusts such as magnesium are present is - ANSWER-Class 2, Group E
In a hazardous location, class 1 is a location that - ANSWER-A contains
flammable gases
In a hazardous locations, class 3 is a location that - ANSWER-Contains
ignitable fibers or flyings
A location in which easily ignitable fires are manufactured is a -
ANSWER-Class 3, division 1
A location in which ignitable flammable, flammable liquidproduced
vapors - ANSWER-Class 1
Is the amount of electricity required at a given time - ANSWER-
Demand
For the calculations required in article 220, the total area of an
occupancy is determined from the __ dimensions of the building or
structure - ANSWER-Outside
Commercial 18th Edition by Phil Simmons, Ray C.
Mullin, Mark Ode.
The purpose of the NEC is the practical safeguarding of __ from hazards
arising from the use of electricity. - ANSWER-Peoples and buildings
Annex H in the NEC - ANSWER-Is to used for information on unless
specifically adopted by the local AHJ
A continuous load is any load that expected to operate for - ANSWER-3
hours or more.
To assist in the proper application of the NEC a term that appears in
more than one article is defined in - ANSWER-Article 100
A door chime is an example of a device - ANSWER-False
Which of the following statements is true for an individual branch circuit
that is run in a conduit with other circuits? - ANSWER-It can charge a
neutral with another circuit
The exact code reference that requires electrical equipment to be
securely fastened to the surface on which it is mounted is - ANSWER-
110.13(A)
The NEC permits the attachment cord and plug that is attached to an air
compressor to be used as the disconnecting means. How does section
100.22 require that this disconnecting means be identified? - ANSWER-
It's purpose is obvious and not required to be marked.
,B-phase on a 120/240 volt 3-ph, 4-wire system is called the ___ leg. -
ANSWER-High stinger wild.
Section __ in the NEC specifies that all 120-volt receptacles in the
kitchen of a cafeteria are to be gfci protected - ANSWER-210.8(B)(2)
How many 20-amp kitchen countertop Receptacle - ANSWER-0
In NEC article 500.8, equipment marked for use in a class 1 locations
and has a marked temperature classification of T3B is suitable for use in
environments with a maximum surface temperature of - ANSWER-329F
Protection against __ is addressed by the requirements in the NEC -
ANSWER-Fault currents effects, Thermal, Electric shock.
Which of the following installations Are covered by the NEC? -
ANSWER-None of the above
Is the conduit between the lighting peoples covered by the NEC? The
street lightning and conduit were installed in the utility easement as
shown in the drawing a the right and is under the control of CenterPoint
energy.(utility company) - ANSWER-No.
Chapter 8 in the nec covers ___ and is independent of the other nec
chapters. Provisions in other chapters do not apply unless directly
referenced in chapter 8 - ANSWER-Communication systems
The authority having jurisdiction has the responsibility - ANSWER-For
enforcing the NEC, For approving equipment installations, also for
granting special permission
Annex ___ in the NEC contains examples of load calculations for
dwellings - ANSWER-D
,How long does something need to run to be a continuous load -
ANSWER-3 hours
___ equipment is constructed so that water will not enter it. - ANSWER-
Watertight
A 1900 (4_square or 4x4 square) box with a cover that is installed above
a drywall ceiling is considered - ANSWER-Not accessible
A fluorescent luminaire is an example of a device - ANSWER-False
The illuminated marquee sign for a theatre would be considered to be a
___ load - ANSWER-Continuous
If a motor and the disconnecting means ( safety switch) are located in
the same room and 60 feet apart, these___ considered to be within sight
(of each other) per the NEC - ANSWER-Are not
Which of the following conductor materials are recognized by the NEC -
ANSWER-Aluminum, copper, copper-clad aluminum (all of these)
Improper electrical terminations lead to increased - ANSWER-Circuit
resistance, also voltage dropped across the terminations
Some wire nuts are listed for direct burial underground - ANSWER-
True
Per section 110.26(A)(1) in the NEC, where the wall opposite a panel
board is a metal door condition ___ applies to the clearance
requirements - ANSWER-2
The neutral of an electrical system is always carrying the unbalanced
current of that system - ANSWER-True
, The NEC permits the insulation for an ungrounded conductor to be
___in color. - ANSWER-Anything that isn't green white or gray
All 120- volt kitchen receptacles in the kitchen of a school cafeteria are
required by the NEC to be GFCI protected - ANSWER-True
Refer to NEC 500.8 generally, equipment for use in hazardous locations
shall be marked to show the environment for which it has been
evaluated. Equipment that is not marked to indicate a division or is
marked as division 1 is ____ - ANSWER-Suitable for both divisions 1
and 2
The class and material group classification where combustible metal
dusts such as magnesium are present is - ANSWER-Class 2, Group E
In a hazardous location, class 1 is a location that - ANSWER-A contains
flammable gases
In a hazardous locations, class 3 is a location that - ANSWER-Contains
ignitable fibers or flyings
A location in which easily ignitable fires are manufactured is a -
ANSWER-Class 3, division 1
A location in which ignitable flammable, flammable liquidproduced
vapors - ANSWER-Class 1
Is the amount of electricity required at a given time - ANSWER-
Demand
For the calculations required in article 220, the total area of an
occupancy is determined from the __ dimensions of the building or
structure - ANSWER-Outside
