IRC Electrical Test with COMPLETE SOLUTION
Conductors in NM cable assemblies shall be rated at ___°C. Correct Answer: 90°C
Watch out here, it also reads the 90°C rating shall be permitted to be used for ampacity
correction and adjustment purposes provided that the final corrected or adjusted ampacity does
not exceed that for a 60°C rated conductor.
E3705.4.4 Conductors of type NM cable.
Insulated conductors and cables exposed to direct rays of sun shall be listed and labeled ____
_____. Correct Answer: Sunlight resistant
E3802.3.3 Locations exposed to direct sunlight.
Where raceways are installed in wet locations above grade, the interior of such raceways shall be
considered to be a ____ location. Correct Answer: Wet
Insulated conductors and cables installed in raceways in wet locations above grade shall be listed
for use in wet locations.
E3802.7 Raceways in wet locations above grade.
Underground service laterals that are not encased in concrete and that are buried 18 inches or
more below grade shall have their location identified by a ___ ____. Correct Answer: Warning
ribbon
That is placed in the trench at least 12 inches above the underground installation.
E3803.2 Warning ribbon.
Receptacles shall be installed so that no point along the floor in any wall space is more than ____
feet, measured horizontally, from an outlet in that space. Correct Answer: 6 ft.
The 6/12 rule. 6' from any door opening and ever 12' after that measured along the wall.
E3901.2.1 Spacing.
Kitchen counter top receptacles shall be installed so that no point along the wall line is more than
____ inches from a receptacle. Correct Answer: 24 in.
The 2/4 rule. 2 feet from any opening and every 4 feet after that.
E3901.4.1 Wall counter space.
, At least one receptacle outlet in bathrooms is required to be within ____ inches of each lavatory
basin. Correct Answer: 36 in.
E3901.6 Bathroom.
There shall be a wall switch at each floor to control stairway lighting where the stairway has
____ or more risers. Correct Answer: 6
E3903.3 Additional locations.
Nonmetallic boxes shall be used only with cable wiring methods with entirely nonmetallic-
sheaths, flexible cords and nonmetallic raceways. Correct Answer: True
Think plastic boxes. Read the 2 exceptions in this section. Review Tables E3904.6(1) through
E3904.6(10)
E3905.3 Nonmetallic boxes.
In calculating box fill each No. 12 AWG conductor shall require ___ cubic inches free space
within the box. Correct Answer: 2.25 cu. in.
Review Table E3905.13.1 and Table E3905.13.2.1
E3905.12.2.1 Volume Allowance Required Per Conductor.
Unused Openings in cabinets and panel boards shall be effectively ____ to afford protection
equivalent to that of the wall of the cabinet. Correct Answer: Closed
This means you can not have any open knockouts.
E3906.4 Unused openings.
The ____ shall not be considered as an effective ground-fault current path. Correct Answer:
Earth
E3908.5 Earth as a ground-fault current path.
Switches shall not be more than ____ feet, ____ inches above the floor or working platform,
when the switch is in its highest position. Correct Answer: 6 ft., 7 in.
Also applies to circuit breakers used as switches.
E4001.6 Access.
Receptacles installed on 15- and 20- ampere-rated branch circuits shall be of the ____ type.
Correct Answer: Grounding
Conductors in NM cable assemblies shall be rated at ___°C. Correct Answer: 90°C
Watch out here, it also reads the 90°C rating shall be permitted to be used for ampacity
correction and adjustment purposes provided that the final corrected or adjusted ampacity does
not exceed that for a 60°C rated conductor.
E3705.4.4 Conductors of type NM cable.
Insulated conductors and cables exposed to direct rays of sun shall be listed and labeled ____
_____. Correct Answer: Sunlight resistant
E3802.3.3 Locations exposed to direct sunlight.
Where raceways are installed in wet locations above grade, the interior of such raceways shall be
considered to be a ____ location. Correct Answer: Wet
Insulated conductors and cables installed in raceways in wet locations above grade shall be listed
for use in wet locations.
E3802.7 Raceways in wet locations above grade.
Underground service laterals that are not encased in concrete and that are buried 18 inches or
more below grade shall have their location identified by a ___ ____. Correct Answer: Warning
ribbon
That is placed in the trench at least 12 inches above the underground installation.
E3803.2 Warning ribbon.
Receptacles shall be installed so that no point along the floor in any wall space is more than ____
feet, measured horizontally, from an outlet in that space. Correct Answer: 6 ft.
The 6/12 rule. 6' from any door opening and ever 12' after that measured along the wall.
E3901.2.1 Spacing.
Kitchen counter top receptacles shall be installed so that no point along the wall line is more than
____ inches from a receptacle. Correct Answer: 24 in.
The 2/4 rule. 2 feet from any opening and every 4 feet after that.
E3901.4.1 Wall counter space.
, At least one receptacle outlet in bathrooms is required to be within ____ inches of each lavatory
basin. Correct Answer: 36 in.
E3901.6 Bathroom.
There shall be a wall switch at each floor to control stairway lighting where the stairway has
____ or more risers. Correct Answer: 6
E3903.3 Additional locations.
Nonmetallic boxes shall be used only with cable wiring methods with entirely nonmetallic-
sheaths, flexible cords and nonmetallic raceways. Correct Answer: True
Think plastic boxes. Read the 2 exceptions in this section. Review Tables E3904.6(1) through
E3904.6(10)
E3905.3 Nonmetallic boxes.
In calculating box fill each No. 12 AWG conductor shall require ___ cubic inches free space
within the box. Correct Answer: 2.25 cu. in.
Review Table E3905.13.1 and Table E3905.13.2.1
E3905.12.2.1 Volume Allowance Required Per Conductor.
Unused Openings in cabinets and panel boards shall be effectively ____ to afford protection
equivalent to that of the wall of the cabinet. Correct Answer: Closed
This means you can not have any open knockouts.
E3906.4 Unused openings.
The ____ shall not be considered as an effective ground-fault current path. Correct Answer:
Earth
E3908.5 Earth as a ground-fault current path.
Switches shall not be more than ____ feet, ____ inches above the floor or working platform,
when the switch is in its highest position. Correct Answer: 6 ft., 7 in.
Also applies to circuit breakers used as switches.
E4001.6 Access.
Receptacles installed on 15- and 20- ampere-rated branch circuits shall be of the ____ type.
Correct Answer: Grounding
