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. The resistance of the human body remains the same, regardless of
conditions. - Correct Answer: False
2. Copper is not a conductor of electricity, because only materials that are
magnetic can conduct electricity. - Correct Answer: False
3. The NEC gives minimum safety standards for electrical work and is not
intended to be a "how to" manual. - Correct Answer: True
4. If a 120 volt branch circuit is feeding a load that has 20ohms of resistance,
the amount of current flowing on the circuit will be 7 amps. - Correct
Answer: False
5. A current of 0.12amps is enough to give an electrician a shock that is
sufficient to cause breathing to stop. - Correct Answer: True
6. Many employers around the country require workers to have the OSHA 10
or OSHA 30 card before they are hired. - Correct Answer: True
,7. Schedule 40 rigid polyvinyl chloride conduit (PVC) has a smaller inside
diameter than schedule 80 rigid nonmetallic pvc conduit. - Correct
Answer: False
8. On a duplex receptacle, the silver screw is used to terminate the white
grounded conductor. - Correct Answer: True
9. On a GFCI receptacle, the incoming power is connected to the line
terminals. - Correct Answer: True
10.Manufacturers of nonmetallic sheathed cable are now color-coding their
cables, which allows for ready identification of the cable size. - Correct
Answer: True
11.The unit of measure for electrical current flow is the ____. - Correct
Answer: Ampere
12.The force that causes electrons to move from atom to atom in a conductor
is called ____. - Correct Answer: Voltage
13.The NEC is published by the ____. - Correct Answer: Nation Fire
Protection Association (NFPA)
,14.Grounding and bonding is covered in Article ____ of the NEC. - Correct
Answer: 250
15.The ____ wire of an electrical circuit is connected to the non-current
carrying metal parts of electrical equipment. - Correct Answer: Bare and
white
16.Worksite lock-out/tag-out procedures are established by ____. - Correct
Answer: The company you work for
17.Fall protection must be used whenever workers are on a walking or work
surface that is ____ feet or higher and has protected sides. - Correct
Answer: 6
18.When placing a straight or extension ladder against a wall, the bottom of
the ladder should be placed approximately ____ of the vertical height from
the wall. - Correct Answer: 1/4
19.A straight or extension ladder should extend at least _____ above the top
support when placed against a structure that is not as tall as the ladder. -
Correct Answer: 36"
20.Scaffold planks must be secured and must extend over the end supports at
least ____ inches but not more than ___ inches. - Correct Answer: 6, 12
, 21.Fires that occur with flammable liquids, such as gasoline, oil, grease, paints,
and thinners are Class ____ fires. - Correct Answer: B
22.A low resistance path, which results in a high value of current that flows
around, rather than through, a circuit is called a _____ circuit. - Correct
Answer: Short
23.The NEC requires Type NM cable to be supported no more than ____ inches
from single-gang nonmetallic device boxes. - Correct Answer: 8
24.When nonmetallic device boxes that are 2 gang or more are used, the
installed type NM cable must be supported no more than _____ inches
from the box. - Correct Answer: 12
25.The ____ circuit conductor is used as the grounded conductor and returns
current from the load back to the source. - Correct Answer: White
26.Type ____ cable is used for underground service entrance installations. -
Correct Answer: USE
27.A switch that is used on 240V circuits to control a load from one location is
called a ____ switch. - Correct Answer: Double pole
28.A GFCI circuit breaker is easily recognized by the "push to test" button and
the ____. - Correct Answer: Yellow body
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. The resistance of the human body remains the same, regardless of
conditions. - Correct Answer: False
2. Copper is not a conductor of electricity, because only materials that are
magnetic can conduct electricity. - Correct Answer: False
3. The NEC gives minimum safety standards for electrical work and is not
intended to be a "how to" manual. - Correct Answer: True
4. If a 120 volt branch circuit is feeding a load that has 20ohms of resistance,
the amount of current flowing on the circuit will be 7 amps. - Correct
Answer: False
5. A current of 0.12amps is enough to give an electrician a shock that is
sufficient to cause breathing to stop. - Correct Answer: True
6. Many employers around the country require workers to have the OSHA 10
or OSHA 30 card before they are hired. - Correct Answer: True
,7. Schedule 40 rigid polyvinyl chloride conduit (PVC) has a smaller inside
diameter than schedule 80 rigid nonmetallic pvc conduit. - Correct
Answer: False
8. On a duplex receptacle, the silver screw is used to terminate the white
grounded conductor. - Correct Answer: True
9. On a GFCI receptacle, the incoming power is connected to the line
terminals. - Correct Answer: True
10.Manufacturers of nonmetallic sheathed cable are now color-coding their
cables, which allows for ready identification of the cable size. - Correct
Answer: True
11.The unit of measure for electrical current flow is the ____. - Correct
Answer: Ampere
12.The force that causes electrons to move from atom to atom in a conductor
is called ____. - Correct Answer: Voltage
13.The NEC is published by the ____. - Correct Answer: Nation Fire
Protection Association (NFPA)
,14.Grounding and bonding is covered in Article ____ of the NEC. - Correct
Answer: 250
15.The ____ wire of an electrical circuit is connected to the non-current
carrying metal parts of electrical equipment. - Correct Answer: Bare and
white
16.Worksite lock-out/tag-out procedures are established by ____. - Correct
Answer: The company you work for
17.Fall protection must be used whenever workers are on a walking or work
surface that is ____ feet or higher and has protected sides. - Correct
Answer: 6
18.When placing a straight or extension ladder against a wall, the bottom of
the ladder should be placed approximately ____ of the vertical height from
the wall. - Correct Answer: 1/4
19.A straight or extension ladder should extend at least _____ above the top
support when placed against a structure that is not as tall as the ladder. -
Correct Answer: 36"
20.Scaffold planks must be secured and must extend over the end supports at
least ____ inches but not more than ___ inches. - Correct Answer: 6, 12
, 21.Fires that occur with flammable liquids, such as gasoline, oil, grease, paints,
and thinners are Class ____ fires. - Correct Answer: B
22.A low resistance path, which results in a high value of current that flows
around, rather than through, a circuit is called a _____ circuit. - Correct
Answer: Short
23.The NEC requires Type NM cable to be supported no more than ____ inches
from single-gang nonmetallic device boxes. - Correct Answer: 8
24.When nonmetallic device boxes that are 2 gang or more are used, the
installed type NM cable must be supported no more than _____ inches
from the box. - Correct Answer: 12
25.The ____ circuit conductor is used as the grounded conductor and returns
current from the load back to the source. - Correct Answer: White
26.Type ____ cable is used for underground service entrance installations. -
Correct Answer: USE
27.A switch that is used on 240V circuits to control a load from one location is
called a ____ switch. - Correct Answer: Double pole
28.A GFCI circuit breaker is easily recognized by the "push to test" button and
the ____. - Correct Answer: Yellow body
