NYC Master Electrical Exam Questions
And Answers
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LA
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,neutral point - The common point on a wye-connection in a polyphase system or midpoint on a
single phase, 3-wire system, or midpoint of a single phase portion of a 3-phase delta system, or
a midpoint of a 3-wire, direct current system
In the NEC the words ___________indicate a mandatory requirement - Shall or shall not
A
On a four wire Delta connected system with a midpoint of one phase winding is grounded, only
the conductor or bus bar having a higher phase voltage the ground shall be durably and
permanently marked by an outer finish that is _______ in color or by other effective means.
R
Such Identification shall be placed at each point on the system where connection is made if the
grounded conductor is also present. - Orange
The required working space for access to live parts operating at 300 V to ground, where there
U
are exposed live parts on one side and grounded parts on the other side is ____________. - 3
feet 6 inches
LA
The dimensions of working space for access to live parts operating at 300 V, nominal to ground,
where there are expose live parts on both sides of the workspace is________________. - 4 feet
110.26 A1- Dead front assemblies working space - 30" for non-electrical parts
36" for electrical parts
C
The working space in front of the electrical equipment shall not be less than _______wide, or of
the width of the equipment, whichever is greater. - 30"
Large equipment - 1200 A or greater and over 6 feet wide
O
Large equipment means of egress - Two means of egress 24" wide by 6.5 feet tall unless the
following condutions are met
D
1) unobstructed egress
2) Double the workspace
Headroom shall not be less than _______. - 6.5 feet or the height of the equipment
Live parts of electrical equipment operating at ______volts or more she'll be guarded against
accidental contact or approved enclosures or by any of the following means - 50 volts
4) by elevation of 8 feet or more above the floor or other working surface
,A fence shall not be less than ______feet in height - 8 feet
One entrance to enclosures for electrical installations as described in 110.31 not less than
_______wide and _________high shall be provided to give access to the working space around
the electrical equipment - 30 inches and 6.5 feet
Network compartments shall have at least ________means of access. Each door she'll have an
access that leads to a legal exit. - Two
Where rear access is required to work on deenergized parts on the back of enclosed equipment
a minimum working space of __________horizontally shall be provided - 30 inches
A
All non-current carrying metal parts of electrical equipment and all metal raceways and cable
shall be solidly grounded and bonded to all metal pipes in rails at the portal and the intervals not
R
exceeding _____________throughout the tunnel. - 1000 feet
Manhole workspace for cabling-A clear workspace not less than _______wide shall be provided
were cables are located on both sides and not less than _______were cables are only on one
U
side. - 3 feet
2-1/2 feet
LA
Access to manhole dimensions. Rectangular access openings shall not be less than _______.
Round access openings in a manhole shall be not less than ______inches in diameter - 26" x
22"
26"
Manhole openings for personnel shall be located where they are not directly above electrical
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equipment or conductors in the enclosure. Where this is not practiceable either a ________or a
_______shall be provided. - Protective barrier of fixed ladder
And insulated grounded conductor of _____or smaller shall be identified by a continuous white
O
or gray outer finish or by three continuous white stripes on other than green insulation along its
entire length. - 6 awg
D
Manhole covers shall be over ______pounds or otherwise designated to require the use of tools
to open. - 100 pounds
The grounded conductors of other systems shall have a different outer covering conforming to
200.6A or 200.6B or by an outer covering of ______or _______with a readily distinguishable
colored stripe other than green running along the insulation - White or gray
Where conductors of different systems are installed in the same race way, one system she'll
have a neutral having an outer covering of white or natural gray and each other system having a
, neutral shall have an another covering of - White with colored Stripe other than green or
distinguish by other suitable approved means
For screw shell devices with attach leads the conductor attached to the screw shell shall have a
_______or ________finish. - White or gray
In addition to the number of branch circuits required by other parts of the section _______or
more 20 A small appliance branch circuits shall be provided for all receptacle outlets specified
by 210.52B. - Two
An individual branch circuit shall be provided for each _________receptacle required by 210.52
A
I. - Air-Conditioning
Branch circuits required in a dwelling unit. - 1) small appliance branch circuit
R
2) laundry branch circuit
3) bathroom branch circuits
4) Air-Conditioning (NYC AMEND)
U
The maximum voltage drop on branch circuit conductors is _________percent. - 3%
Overall 5%
LA
The maximum voltage drop on feeder circuits is ________. - 2%
Overall 5%
Dwelling unit circuits running through another dwelling unit in common areas. What percentage
of change will require it to be brought up to current code? - 50%
C
Receptacle outlets in floors shall not be counted as part of the required number of receptacle
outlets unless located within _________of the wall. - 18"
Outlets may be installed in a dwelling unit for specific appliance such as laundry equipment.
O
What is the maximum distance allowed between this outlet and the appliance? - 6 feet
A receptacle connected to one of the dwelling unit small appliance branch circuits can be used
D
to supply a(n) __________in any of the rooms specified in 210.52B1. - Electric clock
How many receptacles are required within the perimeter of a balcony, deck or porch with a
usable area of less than 20 ft.² - 1
The number of receptacle outlets for guest rooms in hotels and motels shall not be less than
required for a dwelling unit. These receptacles can be located to be convenient for permanent
furniture layout but at least _________receptacle outlets shall be readily accessible. - 2
And Answers
A
R
U
LA
C
O
D
,neutral point - The common point on a wye-connection in a polyphase system or midpoint on a
single phase, 3-wire system, or midpoint of a single phase portion of a 3-phase delta system, or
a midpoint of a 3-wire, direct current system
In the NEC the words ___________indicate a mandatory requirement - Shall or shall not
A
On a four wire Delta connected system with a midpoint of one phase winding is grounded, only
the conductor or bus bar having a higher phase voltage the ground shall be durably and
permanently marked by an outer finish that is _______ in color or by other effective means.
R
Such Identification shall be placed at each point on the system where connection is made if the
grounded conductor is also present. - Orange
The required working space for access to live parts operating at 300 V to ground, where there
U
are exposed live parts on one side and grounded parts on the other side is ____________. - 3
feet 6 inches
LA
The dimensions of working space for access to live parts operating at 300 V, nominal to ground,
where there are expose live parts on both sides of the workspace is________________. - 4 feet
110.26 A1- Dead front assemblies working space - 30" for non-electrical parts
36" for electrical parts
C
The working space in front of the electrical equipment shall not be less than _______wide, or of
the width of the equipment, whichever is greater. - 30"
Large equipment - 1200 A or greater and over 6 feet wide
O
Large equipment means of egress - Two means of egress 24" wide by 6.5 feet tall unless the
following condutions are met
D
1) unobstructed egress
2) Double the workspace
Headroom shall not be less than _______. - 6.5 feet or the height of the equipment
Live parts of electrical equipment operating at ______volts or more she'll be guarded against
accidental contact or approved enclosures or by any of the following means - 50 volts
4) by elevation of 8 feet or more above the floor or other working surface
,A fence shall not be less than ______feet in height - 8 feet
One entrance to enclosures for electrical installations as described in 110.31 not less than
_______wide and _________high shall be provided to give access to the working space around
the electrical equipment - 30 inches and 6.5 feet
Network compartments shall have at least ________means of access. Each door she'll have an
access that leads to a legal exit. - Two
Where rear access is required to work on deenergized parts on the back of enclosed equipment
a minimum working space of __________horizontally shall be provided - 30 inches
A
All non-current carrying metal parts of electrical equipment and all metal raceways and cable
shall be solidly grounded and bonded to all metal pipes in rails at the portal and the intervals not
R
exceeding _____________throughout the tunnel. - 1000 feet
Manhole workspace for cabling-A clear workspace not less than _______wide shall be provided
were cables are located on both sides and not less than _______were cables are only on one
U
side. - 3 feet
2-1/2 feet
LA
Access to manhole dimensions. Rectangular access openings shall not be less than _______.
Round access openings in a manhole shall be not less than ______inches in diameter - 26" x
22"
26"
Manhole openings for personnel shall be located where they are not directly above electrical
C
equipment or conductors in the enclosure. Where this is not practiceable either a ________or a
_______shall be provided. - Protective barrier of fixed ladder
And insulated grounded conductor of _____or smaller shall be identified by a continuous white
O
or gray outer finish or by three continuous white stripes on other than green insulation along its
entire length. - 6 awg
D
Manhole covers shall be over ______pounds or otherwise designated to require the use of tools
to open. - 100 pounds
The grounded conductors of other systems shall have a different outer covering conforming to
200.6A or 200.6B or by an outer covering of ______or _______with a readily distinguishable
colored stripe other than green running along the insulation - White or gray
Where conductors of different systems are installed in the same race way, one system she'll
have a neutral having an outer covering of white or natural gray and each other system having a
, neutral shall have an another covering of - White with colored Stripe other than green or
distinguish by other suitable approved means
For screw shell devices with attach leads the conductor attached to the screw shell shall have a
_______or ________finish. - White or gray
In addition to the number of branch circuits required by other parts of the section _______or
more 20 A small appliance branch circuits shall be provided for all receptacle outlets specified
by 210.52B. - Two
An individual branch circuit shall be provided for each _________receptacle required by 210.52
A
I. - Air-Conditioning
Branch circuits required in a dwelling unit. - 1) small appliance branch circuit
R
2) laundry branch circuit
3) bathroom branch circuits
4) Air-Conditioning (NYC AMEND)
U
The maximum voltage drop on branch circuit conductors is _________percent. - 3%
Overall 5%
LA
The maximum voltage drop on feeder circuits is ________. - 2%
Overall 5%
Dwelling unit circuits running through another dwelling unit in common areas. What percentage
of change will require it to be brought up to current code? - 50%
C
Receptacle outlets in floors shall not be counted as part of the required number of receptacle
outlets unless located within _________of the wall. - 18"
Outlets may be installed in a dwelling unit for specific appliance such as laundry equipment.
O
What is the maximum distance allowed between this outlet and the appliance? - 6 feet
A receptacle connected to one of the dwelling unit small appliance branch circuits can be used
D
to supply a(n) __________in any of the rooms specified in 210.52B1. - Electric clock
How many receptacles are required within the perimeter of a balcony, deck or porch with a
usable area of less than 20 ft.² - 1
The number of receptacle outlets for guest rooms in hotels and motels shall not be less than
required for a dwelling unit. These receptacles can be located to be convenient for permanent
furniture layout but at least _________receptacle outlets shall be readily accessible. - 2
