NCCER STUDY GUIDE
"A Group" - Correct Answer Represents the most hazardous location
1 kilowatt (kw) is the suffix for - Correct Answer 1,000 watts
15 amperes is the maximum standard over current device rating used to? - Correct Answer Protect instrument circuits
in a panel board
4/0 to 14 AWG is the most common conductors used for? - Correct Answer Light and power installations
87 1/2 is the minimum percentage rated voltage that a storage battery should? - Correct Answer Supply the
emergency load
A 90° angle pull box should be? - Correct Answer Six times the biggest conduit
A battery source consist of two or more cells and - Correct Answer Convert chemical energy into electrical energy
A bonding jumper is required for equipment installed in ________ location? - Correct Answer Class I
A bus bar is not a type of? - Correct Answer Service disconnect
A conductor has three or less - Correct Answer Valence electrons
A continuous load is? - Correct Answer Load where the maximum current is expected to continue for three hours or
more
A fuse should be rated higher than the highest rated component in a? - Correct Answer Panelboard to be protected
A magnetic field is generated around the coils when? - Correct Answer AC flows through a transformer coil
A pole equipped with both N.C and N.O contacts is designated as a? - Correct Answer Double throw pole
A pull box for a straight pull must be? - Correct Answer 8x the trade size of conduit
A pull box for conduit entering at right angles must be - Correct Answer 6x the trade size of conduit
A relay designated as a 3PDT-SB relay has? - Correct Answer N.O & 3 N.C contacts
A relay is an electromechanical component used as a - Correct Answer Switching device
A resistor is a component that normally - Correct Answer Opposes current flow in a DC circuit
A run of conduit must not have more than - Correct Answer 4 quarter bends between fittings and outlets (180
degrees)
A schematic is a drawing in which - Correct Answer Symbols are used to represent the components in a system
A Series circuit has only one route of - Correct Answer Current flow
A straight pull box should be? - Correct Answer Eight times the biggest conduit
A wood joist cannot be? - Correct Answer Drilled and less approved by the manufacture
AC Voltage Tag Colors Class 0 - Correct Answer Red tag 1,000 volts
AC Voltage Tag Colors Class 00 - Correct Answer Beige tag 500 volts
, AC Voltage Tag Colors Class 1 - Correct Answer White tag 7,500 volts
AC Voltage Tag Colors Class 2 - Correct Answer Yellow tag 17,000 volts
AC Voltage Tag Colors Class 3 - Correct Answer Green tag 26,500 volts
AC Voltage Tag Colors Class 4 - Correct Answer Orange tag 36,000 volts
All 15/20-amp Receptacle outlets installed in bathroom of dwelling units should always? - Correct Answer Require
ground fault circuit interceptor
All conductors of a circuit must be installed in the same raceway to? - Correct Answer Minimize induction heating
Alternating current changes directions at? - Correct Answer 60Hz
Aluminum conduit should not be? - Correct Answer Buried in soil or concrete containing calcium chloride
Aluminum should not be used as? - Correct Answer Grounding electrodes
An acceptable method of identifying grounded conductors larger than NO. 6 AWG is by? - Correct Answer Tagging or
making them white
An electrical circuit at minimum contains a - Correct Answer Source, load, and switch
An electrical circuit is a complete path for - Correct Answer Current flow
An open circuit occurs in a wiring system when? - Correct Answer A conductor is broken or separated
Asbestos banned in 1978, you need to assume any building constructed before 1980 has - Correct Answer Asbestos
in it
Because the wall thickness of IMC is less than that of rigid conduit it is? - Correct Answer Often referred to as a thin
wall conduit
Cellular ductways our designed to? - Correct Answer Extend conductors across a floor without embedding it into the
floor
Circuit breakers must be used if a grounded conductor is attached to the - Correct Answer Disconnect switch
Clamp-on amp meter is used to - Correct Answer Measure electrical current
Class 1 locations are hazardous because? - Correct Answer Volatile flammable gases, vapors, or liquids are handled
( divisions 1 & 2 )
Class 2 locations are hazardous because? - Correct Answer The presence of combustible dust
Class 3 locations are hazardous because? - Correct Answer The presence of easily ignitable fibers or other flying
material
Class 40 is not? - Correct Answer A Nema rated class for the trip time of an overload relay
Class one, division two is the classification and division of all? - Correct Answer Floor level areas up to a height of 18
ft in an airport hangar
Compensator controllers starts the motor at? - Correct Answer Reduced voltage through an auto transformer
Compound DC motor has one set of field coils that are? - Correct Answer Connected in parallel with the Armature
and another set connected in series
Conduit offset multipliers at 10° - Correct Answer 5.8
"A Group" - Correct Answer Represents the most hazardous location
1 kilowatt (kw) is the suffix for - Correct Answer 1,000 watts
15 amperes is the maximum standard over current device rating used to? - Correct Answer Protect instrument circuits
in a panel board
4/0 to 14 AWG is the most common conductors used for? - Correct Answer Light and power installations
87 1/2 is the minimum percentage rated voltage that a storage battery should? - Correct Answer Supply the
emergency load
A 90° angle pull box should be? - Correct Answer Six times the biggest conduit
A battery source consist of two or more cells and - Correct Answer Convert chemical energy into electrical energy
A bonding jumper is required for equipment installed in ________ location? - Correct Answer Class I
A bus bar is not a type of? - Correct Answer Service disconnect
A conductor has three or less - Correct Answer Valence electrons
A continuous load is? - Correct Answer Load where the maximum current is expected to continue for three hours or
more
A fuse should be rated higher than the highest rated component in a? - Correct Answer Panelboard to be protected
A magnetic field is generated around the coils when? - Correct Answer AC flows through a transformer coil
A pole equipped with both N.C and N.O contacts is designated as a? - Correct Answer Double throw pole
A pull box for a straight pull must be? - Correct Answer 8x the trade size of conduit
A pull box for conduit entering at right angles must be - Correct Answer 6x the trade size of conduit
A relay designated as a 3PDT-SB relay has? - Correct Answer N.O & 3 N.C contacts
A relay is an electromechanical component used as a - Correct Answer Switching device
A resistor is a component that normally - Correct Answer Opposes current flow in a DC circuit
A run of conduit must not have more than - Correct Answer 4 quarter bends between fittings and outlets (180
degrees)
A schematic is a drawing in which - Correct Answer Symbols are used to represent the components in a system
A Series circuit has only one route of - Correct Answer Current flow
A straight pull box should be? - Correct Answer Eight times the biggest conduit
A wood joist cannot be? - Correct Answer Drilled and less approved by the manufacture
AC Voltage Tag Colors Class 0 - Correct Answer Red tag 1,000 volts
AC Voltage Tag Colors Class 00 - Correct Answer Beige tag 500 volts
, AC Voltage Tag Colors Class 1 - Correct Answer White tag 7,500 volts
AC Voltage Tag Colors Class 2 - Correct Answer Yellow tag 17,000 volts
AC Voltage Tag Colors Class 3 - Correct Answer Green tag 26,500 volts
AC Voltage Tag Colors Class 4 - Correct Answer Orange tag 36,000 volts
All 15/20-amp Receptacle outlets installed in bathroom of dwelling units should always? - Correct Answer Require
ground fault circuit interceptor
All conductors of a circuit must be installed in the same raceway to? - Correct Answer Minimize induction heating
Alternating current changes directions at? - Correct Answer 60Hz
Aluminum conduit should not be? - Correct Answer Buried in soil or concrete containing calcium chloride
Aluminum should not be used as? - Correct Answer Grounding electrodes
An acceptable method of identifying grounded conductors larger than NO. 6 AWG is by? - Correct Answer Tagging or
making them white
An electrical circuit at minimum contains a - Correct Answer Source, load, and switch
An electrical circuit is a complete path for - Correct Answer Current flow
An open circuit occurs in a wiring system when? - Correct Answer A conductor is broken or separated
Asbestos banned in 1978, you need to assume any building constructed before 1980 has - Correct Answer Asbestos
in it
Because the wall thickness of IMC is less than that of rigid conduit it is? - Correct Answer Often referred to as a thin
wall conduit
Cellular ductways our designed to? - Correct Answer Extend conductors across a floor without embedding it into the
floor
Circuit breakers must be used if a grounded conductor is attached to the - Correct Answer Disconnect switch
Clamp-on amp meter is used to - Correct Answer Measure electrical current
Class 1 locations are hazardous because? - Correct Answer Volatile flammable gases, vapors, or liquids are handled
( divisions 1 & 2 )
Class 2 locations are hazardous because? - Correct Answer The presence of combustible dust
Class 3 locations are hazardous because? - Correct Answer The presence of easily ignitable fibers or other flying
material
Class 40 is not? - Correct Answer A Nema rated class for the trip time of an overload relay
Class one, division two is the classification and division of all? - Correct Answer Floor level areas up to a height of 18
ft in an airport hangar
Compensator controllers starts the motor at? - Correct Answer Reduced voltage through an auto transformer
Compound DC motor has one set of field coils that are? - Correct Answer Connected in parallel with the Armature
and another set connected in series
Conduit offset multipliers at 10° - Correct Answer 5.8
