Electrical Inspector/ Electrical {National Electrical Code}
Competency Study Guide
Comprehensive Resource To Help You Ace 2026-2027
Exams Includes Frequently Tested Questions With
ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. Cords that supply swimming pool equipment shall have a copper equipment
grounding conductor not smaller than No. ______________ AWG. -
Correct Answer: 12 AWG.
2. Receptacles shall be installed so that no point along the floor line in any
wall space is more than _________ feet, measured horizontally, from an
outlet in that space. - Correct Answer: 6 Feet.
This is the rule 6/12 rule: 6 feet from any door opening and every 12 feet
after that, measure along the wall.
3. Receptacles installed on 15- and 20-ampere-rated branch circuits shall be of
the ___________ type. - Correct Answer: grounding.
4. In clothes closets, surface-mounted incandescent luminaires shall have
_________ inches minimum clearance from the nearest point of storage
space. - Correct Answer: 12 inches.
, This is measured horizontally and changes to 6 inches for surface
mounted/recessed fluorescent and recessed incandescent fixtures.
5. Conductors in NM cable assemblies shall be rated at _________ Celsius. -
Correct Answer: 90 degrees Celsius.
The 90 degree Celsius rating shall be permitted to be used for ampacity
correction and adjustment purpose provided that the final corrected or
adjusted ampacity does not exceed that for a 60 degree Celsius rated
conductor.
6. In calculating box fill, each No. 12 AWG conductor shall require
______________ cubic inches free space within the box. - Correct
Answer: 2.25 cubic inches.
7. Except for Type IC luminaires, thermal insulation shall not be installed
above a recessed luminaire or within _______________ inches of the
recessed luminaire's enclosure. - Correct Answer: 3 inches.
Exception for Type IC luminaires.
8. Branch circuit ratings for space-heating and water-heating appliances shall
be considered ____________ loads. - Correct Answer: continuous.
9. A minimum of ____________ 20-ampere-rated branch circuits shall be
provided to serve all wall and floor receptacle outlets located in the kitchen,
pantry, breakfast area, dining area or similar area of a dwelling. -
Correct Answer: Two.
,10.A minimum of one ____________-ampere-rated branch circuit shall be
provided for receptacles located in the laundry area and shall serve only
receptacle outlets in the laundry area. - Correct Answer: 20 ampere.
11.Receptacles for appliances like the washer shall be located within 6 feet of
the appliance location. See Section E3901.5
12.Bonding shall be provided where necessary to ensure electrical
______________. - Correct Answer: continuity
and the capacity to conduct safely any fault current likely to be imposed.
13.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 feet
7 inches
Also applies to circuit breakers used as switches.
14.the rating of any one cord-and-plug- connected utilization equipment shall
not exceed ________ percent of the branch-circuit ampere rating. -
Correct Answer: 80 percent.
15.All mechanical elements used to terminate a grounding electrode
conductor or bonding jumper to the grounding electrodes shall be
__________________. - Correct Answer: accessible.
When not buried or concrete encased.
, 16.Interior metal water piping located more than _________ feet from the
point of entrance to the building shall not be used as part of the grounding
electrode system. - Correct Answer: 5 feet.
17.Electrical panelboards and overcurrent devices shall not be located in
_______________________________. - Correct Answer: clothes
closets, bathrooms or over the steps of a stairway.
18.Overhead service-drop conductors shall have a vertical clearance of not less
than __________ feet above the roof surface. - Correct Answer: 8 feet.
Review all of the exceptions in this section.
19.Electrical services within the scope of the IRC are limited to ____________-
volt, 0-to _______________ - ampere, single-phase systems. - Correct
Answer: 120/240
400
20.Recessed incandescent fixtures shall have _____________ protection. -
Correct Answer: Thermal.
Know the two exceptions in this section.
21.A minimum of ___________ ___________ branch circuit shall be provided
to supply the bathroom receptacle outlet(s). Such circuits shall have no
other outlets. - Correct Answer: one 20-amp
Read the exception in this section for supplying each bathroom with its own
20-ampere circuit.
Competency Study Guide
Comprehensive Resource To Help You Ace 2026-2027
Exams Includes Frequently Tested Questions With
ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. Cords that supply swimming pool equipment shall have a copper equipment
grounding conductor not smaller than No. ______________ AWG. -
Correct Answer: 12 AWG.
2. Receptacles shall be installed so that no point along the floor line in any
wall space is more than _________ feet, measured horizontally, from an
outlet in that space. - Correct Answer: 6 Feet.
This is the rule 6/12 rule: 6 feet from any door opening and every 12 feet
after that, measure along the wall.
3. Receptacles installed on 15- and 20-ampere-rated branch circuits shall be of
the ___________ type. - Correct Answer: grounding.
4. In clothes closets, surface-mounted incandescent luminaires shall have
_________ inches minimum clearance from the nearest point of storage
space. - Correct Answer: 12 inches.
, This is measured horizontally and changes to 6 inches for surface
mounted/recessed fluorescent and recessed incandescent fixtures.
5. Conductors in NM cable assemblies shall be rated at _________ Celsius. -
Correct Answer: 90 degrees Celsius.
The 90 degree Celsius rating shall be permitted to be used for ampacity
correction and adjustment purpose provided that the final corrected or
adjusted ampacity does not exceed that for a 60 degree Celsius rated
conductor.
6. In calculating box fill, each No. 12 AWG conductor shall require
______________ cubic inches free space within the box. - Correct
Answer: 2.25 cubic inches.
7. Except for Type IC luminaires, thermal insulation shall not be installed
above a recessed luminaire or within _______________ inches of the
recessed luminaire's enclosure. - Correct Answer: 3 inches.
Exception for Type IC luminaires.
8. Branch circuit ratings for space-heating and water-heating appliances shall
be considered ____________ loads. - Correct Answer: continuous.
9. A minimum of ____________ 20-ampere-rated branch circuits shall be
provided to serve all wall and floor receptacle outlets located in the kitchen,
pantry, breakfast area, dining area or similar area of a dwelling. -
Correct Answer: Two.
,10.A minimum of one ____________-ampere-rated branch circuit shall be
provided for receptacles located in the laundry area and shall serve only
receptacle outlets in the laundry area. - Correct Answer: 20 ampere.
11.Receptacles for appliances like the washer shall be located within 6 feet of
the appliance location. See Section E3901.5
12.Bonding shall be provided where necessary to ensure electrical
______________. - Correct Answer: continuity
and the capacity to conduct safely any fault current likely to be imposed.
13.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 feet
7 inches
Also applies to circuit breakers used as switches.
14.the rating of any one cord-and-plug- connected utilization equipment shall
not exceed ________ percent of the branch-circuit ampere rating. -
Correct Answer: 80 percent.
15.All mechanical elements used to terminate a grounding electrode
conductor or bonding jumper to the grounding electrodes shall be
__________________. - Correct Answer: accessible.
When not buried or concrete encased.
, 16.Interior metal water piping located more than _________ feet from the
point of entrance to the building shall not be used as part of the grounding
electrode system. - Correct Answer: 5 feet.
17.Electrical panelboards and overcurrent devices shall not be located in
_______________________________. - Correct Answer: clothes
closets, bathrooms or over the steps of a stairway.
18.Overhead service-drop conductors shall have a vertical clearance of not less
than __________ feet above the roof surface. - Correct Answer: 8 feet.
Review all of the exceptions in this section.
19.Electrical services within the scope of the IRC are limited to ____________-
volt, 0-to _______________ - ampere, single-phase systems. - Correct
Answer: 120/240
400
20.Recessed incandescent fixtures shall have _____________ protection. -
Correct Answer: Thermal.
Know the two exceptions in this section.
21.A minimum of ___________ ___________ branch circuit shall be provided
to supply the bathroom receptacle outlet(s). Such circuits shall have no
other outlets. - Correct Answer: one 20-amp
Read the exception in this section for supplying each bathroom with its own
20-ampere circuit.
