C 10 Electrical Exam Part V & VI & VII
Exam Solved Questions With Revised
Correct
Detailed Answers
Brand New Version !!
1. Which of the following is an acceptable marking method for the grounding
conductor on a grounding-type receptacle?
A) A white-colored round-headed terminal.
B) A tag with 1/4-inch high letters.
C) An orange dot.
D) A green-colored hexagonal headed or shaped terminal screw or nut. -
ANSWER d)
NEC Section Section 406.9(B) permits Answer D as one of the several approved
methods of identifying a grounding-type receptacle.
2. What type fixture wires are required when the wires are mounted on chains
supporting a lighting fixture?
A)Solid conductors only.
B)Stranded conductors only.
C)Either solid or stranded.
D)Compressed aluminum conductors only. - ANSWER B
,NEC Section 410.28(E) requires stranded conductors to be used for wiring on
fixture chains and on other movable or flexible parts.
3. Flexible cords used to connect cord-connected showcase lighting must be of
what type?
A)Light-duty type.
B)Extra hard-service type.
C)Hard-service type.
D)None of the above. - ANSWER C
NEC Section 410.29(A) requires flexible cords used to connect showcase lighting
to be of the hard-service type.
4. Normally, lighting fixtures must not be used as a raceway for circuit conductors
execept when _____.
A)the fixtures are designed for end-to-end assembly to form a continuous
raceway or fixtures connected together by recognized wiring methods shall be
permitted to carry through conductors of a two-wire or multiwire branch circuit
supplying the fixture
B)the fixtures are listed as a raceway
C)one additional two-wire branch circuit separately supplying one or more of the
connected fixtures described in Answer B shall be permitted to be carried through
the fixture
D)All the above. - ANSWER D
NEC Section 410.32 allows all three conditions in Answers A, B, and C.
5. Branch circuit conductors installed within 3 inches of an electric-discharge
fixture ballast must have insulation with a tempeture rating no lower than _____.
,A)90 degrees C (194 degrees F)
B)30 degrees C (86 degrees F)
C)150 degrees C (302 degrees F)
D)40 degrees C (104 degrees F) - ANSWER The Correct Answer Is A
NEC Section 410.33 requires such conductors to be rated for a tempeture not
lower than 90 degrees C which includes such types as RHH, THW, THHN, FEPB, SA,
and XHHW insulations.
6. Electric-discharge lighting fixtures must be plainly marked with their electrical
rating. This marking must include the voltage, frequency, and _____.
A)wattage
B)current rating
C)resistance
D)All the above. - ANSWER The Correct Answer Is B
NEC Sections 410.35(A) and (B) require the voltage and frequency to be listed
along with the current rating of the unit, including the ballast, transformer, or
autotransformer.
7. What type of lining must be provided in wiring compartments of all non-
metallic lighting fixtures?
A)Glass
B)Plastic
C)Porcelain
D)Metal - ANSWER The Correct Answer Is D
NEC Section 410.37 requires all non-metallic lighting fixtures not made entirely of
non-combustible material to have their wiring compartments lined with metal.
, 8. Which of the following types of lampholders are approved for installation in
wet or damp locations?
A)Weatherproof
B)Mogul-base type
C)Intermediate base type with explosion-proof fittings.
D)Candelabra type - ANSWER The Correct Answer Is A
NEC Section 410.49 requires fixtures to be of the weatherproof type when
installed in wet or damp locations.
9. Isolated ground receptacles shall be identified by _____.
A)an orange triangle
B)a green dot
C)a permanent seal
D)standard lugs - ANSWER The Correct Answer Is A
NEC Section 406.2(D) requires such receptacles to have an orange triangle located
on the face of the receptacle.
10. What is the maximum incandescent lamp wattage that may be used on
medium base lampholders?
A)100 watts
B)200 watts
C)300 watts
D)400 watts - ANSWER The Correct Answer Is C
Incandescent lamps for general use on lighting branch circuits that are equipped
with medium base lampholders must not exceed 300 watts. NEC Section 410.53.
Exam Solved Questions With Revised
Correct
Detailed Answers
Brand New Version !!
1. Which of the following is an acceptable marking method for the grounding
conductor on a grounding-type receptacle?
A) A white-colored round-headed terminal.
B) A tag with 1/4-inch high letters.
C) An orange dot.
D) A green-colored hexagonal headed or shaped terminal screw or nut. -
ANSWER d)
NEC Section Section 406.9(B) permits Answer D as one of the several approved
methods of identifying a grounding-type receptacle.
2. What type fixture wires are required when the wires are mounted on chains
supporting a lighting fixture?
A)Solid conductors only.
B)Stranded conductors only.
C)Either solid or stranded.
D)Compressed aluminum conductors only. - ANSWER B
,NEC Section 410.28(E) requires stranded conductors to be used for wiring on
fixture chains and on other movable or flexible parts.
3. Flexible cords used to connect cord-connected showcase lighting must be of
what type?
A)Light-duty type.
B)Extra hard-service type.
C)Hard-service type.
D)None of the above. - ANSWER C
NEC Section 410.29(A) requires flexible cords used to connect showcase lighting
to be of the hard-service type.
4. Normally, lighting fixtures must not be used as a raceway for circuit conductors
execept when _____.
A)the fixtures are designed for end-to-end assembly to form a continuous
raceway or fixtures connected together by recognized wiring methods shall be
permitted to carry through conductors of a two-wire or multiwire branch circuit
supplying the fixture
B)the fixtures are listed as a raceway
C)one additional two-wire branch circuit separately supplying one or more of the
connected fixtures described in Answer B shall be permitted to be carried through
the fixture
D)All the above. - ANSWER D
NEC Section 410.32 allows all three conditions in Answers A, B, and C.
5. Branch circuit conductors installed within 3 inches of an electric-discharge
fixture ballast must have insulation with a tempeture rating no lower than _____.
,A)90 degrees C (194 degrees F)
B)30 degrees C (86 degrees F)
C)150 degrees C (302 degrees F)
D)40 degrees C (104 degrees F) - ANSWER The Correct Answer Is A
NEC Section 410.33 requires such conductors to be rated for a tempeture not
lower than 90 degrees C which includes such types as RHH, THW, THHN, FEPB, SA,
and XHHW insulations.
6. Electric-discharge lighting fixtures must be plainly marked with their electrical
rating. This marking must include the voltage, frequency, and _____.
A)wattage
B)current rating
C)resistance
D)All the above. - ANSWER The Correct Answer Is B
NEC Sections 410.35(A) and (B) require the voltage and frequency to be listed
along with the current rating of the unit, including the ballast, transformer, or
autotransformer.
7. What type of lining must be provided in wiring compartments of all non-
metallic lighting fixtures?
A)Glass
B)Plastic
C)Porcelain
D)Metal - ANSWER The Correct Answer Is D
NEC Section 410.37 requires all non-metallic lighting fixtures not made entirely of
non-combustible material to have their wiring compartments lined with metal.
, 8. Which of the following types of lampholders are approved for installation in
wet or damp locations?
A)Weatherproof
B)Mogul-base type
C)Intermediate base type with explosion-proof fittings.
D)Candelabra type - ANSWER The Correct Answer Is A
NEC Section 410.49 requires fixtures to be of the weatherproof type when
installed in wet or damp locations.
9. Isolated ground receptacles shall be identified by _____.
A)an orange triangle
B)a green dot
C)a permanent seal
D)standard lugs - ANSWER The Correct Answer Is A
NEC Section 406.2(D) requires such receptacles to have an orange triangle located
on the face of the receptacle.
10. What is the maximum incandescent lamp wattage that may be used on
medium base lampholders?
A)100 watts
B)200 watts
C)300 watts
D)400 watts - ANSWER The Correct Answer Is C
Incandescent lamps for general use on lighting branch circuits that are equipped
with medium base lampholders must not exceed 300 watts. NEC Section 410.53.
