NATIONAL ELECTRIC CODE EXAM 2025
LATEST QUESTIONS AND DETAILED
CORRECT ANSWERS (VERIFIED
ANSWERS) | ALREADY GRADED A+
Where rock bottom in encountered at an angle up to 45
degrees when driving a rod or pipe electrode, the
electrode shall be permitted to be buried in a trench __
deep.
a) 30 in
b) 6ft
c) 8ft
d) 10 ft Correct Answer 30 in.
The bonding jumper used to bond the metal water piping
system shall be sized in accordance with __ except as
permitted in 250.104(A)(2) and 250.104(A)(3).
a) table 250.102(C)(1)
b) table 250.122
c) table 310.16
d) table 310.15(6) Correct Answer Table 250.102(C)(1)
All conductors of the circuit shall be __, unless otherwise
specifically permitted in the code.
a) bonded
b) grounded
c) the same size
,d) in the same raceway or cable or be in close proximity in
the same trench Correct Answer In the same raceway or
cable or be in close proximity in the same trench
Power supply conductors and class 1 circuit conductors
can occupy the same cable, enclosure, or raceway without
a barrier __.
a) only where the equipment powered is functionally
associated
b) where the circuits involved are not a mixture of ac and
dc
c) under no circumstances
d) only where the equipment is essential for life safety
Correct Answer Only where the equipment powered is
functionally associated
In accordance with article 690, "dc-to-dc __ circuit" is the
dc circuit conductors connected to the output of a dc
combiner for dc-to-dc converter source circuits.
a) converter output
d) converter control
c) inverter output
d) inverter control Correct Answer Converter output
In PV systems, where a sign,e over current device is used
to protect a set of two or more parallel connected module
circuits, the amps city of each of the module
interconnection conductors shall not be less than the sum
of the rating of the single over current device plus __
percent of the short circuit current from the other parallel
connected modules.
,a) 100
b) 115
c) 125
d) 150 Correct Answer 125
__ drainage openings not smaller than 1/8 in. and not
larger than 1/4 in. in diameter shall be permitted to be
installed in the field in boxes or conduit bodies listed for
use in damp or wet locations.
a) listed
b) approved
c) labeled
d) identified Correct Answer Approved
In class 1 locations, attachment plugs shall be of the type
providing for __ a permitted flexible cord and shall be
identified for the location.
a) sealing compound around
b) quick connection to
c) connection to the equipment grounding conductors of
d) interlocking Correct Answer Connection to the
equipment grounding conductors of
The ampacity adjustment factors if 319.15(C)(1) shall not
apply to conductors installed in surface metal raceways
where the __ .
a) cross sectional area exceeds at 4 sq. in
b) current carrying conductors do not exceed 30 in number
c) total cross sectional area of all conductors does not
exceed 20 percent of the interior cross sectional area of
the raceway
, d) all of these Correct Answer All of these
The requirement to run all paralleled circuit conductors
within the same __ applies separately to each portion of
the paralleled installation.
a) raceway or auxiliary gutter
b) cable team or trench
c) cable or cord
d) all of these Correct Answer All of these
Class 1, class 2, and class 3 circuits installed __ on the
surface of ceilings and walls shall be supported by the
building structure in such a manner that the cable will not
be darmaged by normal building use.
a) exposed
b) concealed
c) hidden
d) in raceways Correct Answer Exposed
Paint, plaster, cleaners, abrasive, corrosive residues, or
other contaminants may result in an undetermined
alterations of optical fiber cable __.
a) usefulness
b) voltage
c) properties
d) reliability Correct Answer Properties
Large scale PV systems that do not provide arc-fault
protection shall include details of fire mitigation plans to
address __ faults in the documentation required in 690.6.
a) dc arc
LATEST QUESTIONS AND DETAILED
CORRECT ANSWERS (VERIFIED
ANSWERS) | ALREADY GRADED A+
Where rock bottom in encountered at an angle up to 45
degrees when driving a rod or pipe electrode, the
electrode shall be permitted to be buried in a trench __
deep.
a) 30 in
b) 6ft
c) 8ft
d) 10 ft Correct Answer 30 in.
The bonding jumper used to bond the metal water piping
system shall be sized in accordance with __ except as
permitted in 250.104(A)(2) and 250.104(A)(3).
a) table 250.102(C)(1)
b) table 250.122
c) table 310.16
d) table 310.15(6) Correct Answer Table 250.102(C)(1)
All conductors of the circuit shall be __, unless otherwise
specifically permitted in the code.
a) bonded
b) grounded
c) the same size
,d) in the same raceway or cable or be in close proximity in
the same trench Correct Answer In the same raceway or
cable or be in close proximity in the same trench
Power supply conductors and class 1 circuit conductors
can occupy the same cable, enclosure, or raceway without
a barrier __.
a) only where the equipment powered is functionally
associated
b) where the circuits involved are not a mixture of ac and
dc
c) under no circumstances
d) only where the equipment is essential for life safety
Correct Answer Only where the equipment powered is
functionally associated
In accordance with article 690, "dc-to-dc __ circuit" is the
dc circuit conductors connected to the output of a dc
combiner for dc-to-dc converter source circuits.
a) converter output
d) converter control
c) inverter output
d) inverter control Correct Answer Converter output
In PV systems, where a sign,e over current device is used
to protect a set of two or more parallel connected module
circuits, the amps city of each of the module
interconnection conductors shall not be less than the sum
of the rating of the single over current device plus __
percent of the short circuit current from the other parallel
connected modules.
,a) 100
b) 115
c) 125
d) 150 Correct Answer 125
__ drainage openings not smaller than 1/8 in. and not
larger than 1/4 in. in diameter shall be permitted to be
installed in the field in boxes or conduit bodies listed for
use in damp or wet locations.
a) listed
b) approved
c) labeled
d) identified Correct Answer Approved
In class 1 locations, attachment plugs shall be of the type
providing for __ a permitted flexible cord and shall be
identified for the location.
a) sealing compound around
b) quick connection to
c) connection to the equipment grounding conductors of
d) interlocking Correct Answer Connection to the
equipment grounding conductors of
The ampacity adjustment factors if 319.15(C)(1) shall not
apply to conductors installed in surface metal raceways
where the __ .
a) cross sectional area exceeds at 4 sq. in
b) current carrying conductors do not exceed 30 in number
c) total cross sectional area of all conductors does not
exceed 20 percent of the interior cross sectional area of
the raceway
, d) all of these Correct Answer All of these
The requirement to run all paralleled circuit conductors
within the same __ applies separately to each portion of
the paralleled installation.
a) raceway or auxiliary gutter
b) cable team or trench
c) cable or cord
d) all of these Correct Answer All of these
Class 1, class 2, and class 3 circuits installed __ on the
surface of ceilings and walls shall be supported by the
building structure in such a manner that the cable will not
be darmaged by normal building use.
a) exposed
b) concealed
c) hidden
d) in raceways Correct Answer Exposed
Paint, plaster, cleaners, abrasive, corrosive residues, or
other contaminants may result in an undetermined
alterations of optical fiber cable __.
a) usefulness
b) voltage
c) properties
d) reliability Correct Answer Properties
Large scale PV systems that do not provide arc-fault
protection shall include details of fire mitigation plans to
address __ faults in the documentation required in 690.6.
a) dc arc
