24 Hour, Electrical Systems Quiz

Question 1

All electrical materials, components, devices, luminaries (fixtures) & equipment shall be _____ for the application, shall bear the label of an approved _____.

a. approved/company
b. permitted/manufacturer
c. listed/agency
d. in-compliance/Engineer

Answer 1

a. approved/company
[IRC E3403.3]

or c. listed/agency
(Electrical materials, components, devices, fixtures & equipment shall be LISTED for the application, shall bear the label of an approved AGENCY & shall be installed, & used, or both, in accordance with the manufacturer’s installation instructions.)

Question 2

Direct buried conductors & cables emerging from the ground shall be protected by enclosures or raceways extending to a minimum height of ____ above finished grade.

a. 7’
b. 8’
c. 10’
d. 12’

Answer 2

b. 8’

[IRC E3803.3]

Question 3

A metal underground water pipe used as part of the grounding electrode system shall be in direct contact with the earth for a minimum of _____.

a. 8’
b. 10’
c. 15’
d. 20’

Answer 3

b. 10’

[IRC E3608.1.1]

Question 4

Workspace in front of an electrical panel board shall be a minimum of _____ in width, but no less than the width of the panel board.

a. 30’’
b. 36’’
c. 42’’
d. 48’’

Answer 4

a. 30’’

[IRC E3405.2]

Question 5

The dedicated space above a panel board shall be a minimum of ____ high or to the structural ceiling, whichever is lower.

a. 4’
b. 5’
c. 6’
d. 6.5’

Answer 5

c. 6’

[IRC E3405.3]

Question 6

Panelboards & overcurrent protection devices are prohibited in ______ .

a. Clothes closets
b. Sleeping rooms
c. Garages
d. Storage rooms

Answer 6

a. Clothes closets
[IRC E3405.4]
(clothes closets, bathrooms, over steps of stairways)

Question 7

Bonding is?

a. Another word for grounding.
b. Joining two electrical connectors together.
c. The act of putting an “anti-oxidant” on 2 dissimilar metals.
d. Refers to “pig-tailing” aluminum wires.

Answer 7

b. Joining two electrical connectors together.

[CSRE, Book #3, pg. 160]

Question 8

Reverse polarity means?

a. The BLACK wire is HOT & the WHITE wire is NEUTRAL
b. The WHITE wire is HOT & the BLACK wire is NEUTRAL
c. The GROUND wire is OPEN
d. The NEUTRAL wire is OPEN

Answer 8

b. The WHITE wire is HOT & the BLACK wire is NEUTRAL

[CSRE, Book #3, pg. 166]

Question 9

An OPEN wire means?

a. NOT connected
b. REVERSE Polarity
c. The outlet is NOT grounded
d. The wire is POLARIZED

Answer 9

a. NOT connected

Question 10

The minimum size of conductors for feeders & branch circuits shall be ____ (AWG) copper.

a. No. 14
b. No. 12
c. No. 10
d. No. 22

Answer 10

a. No. 14
[IRC E3406.3]
[IRC TABLE E3702.13]
(The minimum size of conductors for feeders and branch circuits shall be 14 AWG copper & 12 AWG aluminum)

Question 11

Insulated grounded conductors of sizes No. 6 (AWG) & smaller may be identified by all BUT which one of the following methods?

a. Continuous WHITE outer finish.
b. Continuous NATURAL GRAY outer finish.
c. Continuous BLACK outer finish.
d. 3 Continuous WHITE stripes (on other than GREEN insulation)

Answer 11

c. Continuous BLACK outer finish.

[IRC E3407.1]

Question 12

What is the minimum permitted size of a grounded service conductor serving a maximum load of 150 amps?

a. No. 1 (AWG) AL
b. No. 1 (AWG) CU
c. No. 1/0 (AWG) AL
d. No. 1/0 (AWG) CU

Answer 12

b. No. 1 (AWG) CU

[IRC TABLE E3603.1]

Question 13

The rating of any one cord-&-plug-connected utilization equipment shall be a maximum of ____ the branch-circuit ampere rating.

a. 80%
b. 100%
c. 110%
d. 125%

Answer 13

a. 80%

[IRC E3702.3]

Question 14

A minimum of _____ branch circuit shall be provided for receptacles located in the laundry room & a minimum of _____ branch circuit(s) shall be provided to supply bathroom receptacle outlet(s).

a. 1-15 amp rated/1-15 amp rated
b. 1-20 amp rated/1-20 amp rated
c. 1-15 amp rated/2-15 amp rated
d. 1-20 amp rated/2-20 amp rated

Answer 14

b. 1-20 amp rated/1-20 amp rated

[IRC E3703.3 & E3703.4]

Question 15

What is the maximum over current protection device rating permitted for No. 12 (AWG) CU conductors?

a. 15 amps
b. 20 amps
c. 25 amps
d. 30 amps

Answer 15

b. 20 amps

[IRC TABLE E3705.5.3]

Question 16

Houses are generally wired in ____ ?

a. Parallel
b. Series
c. Current
d. Red

Answer 16

a. Parallel

[CSRE, Book #3, pg. 154]

Question 17

What would 4 wires mean?

a. 3-phase electricity
b. 120V service
c. There is no neutral wire
d. The house has a large pool or spa

Answer 17

a. 3-phase electricity

Question 18

Gas Piping, “Black Pipe”, can be used as a ground (TRUE/FALSE)

Answer 18

FALSE
[IRC E3608.6]
(A metal underground gas piping system shall not be used as a grounding electrode.)

Question 19

How far can a GFCI be located from a tub or shower?

a. 3’
b. 2’
c. 1’
d. NO MINIMUM

Answer 19

d. NO MINIMUM

Question 20

At a kitchen counter, countertop receptacle outlets shall be installed with a maximum horizontal distance of ____ from any point along the wall line to an outlet.

a. 12’’
b. 18’’
c. 24’’
d. 36’’

Answer 20

c. 24’’

[IRC E3901.4.1]

Question 21

Receptacle outlets shall be installed so that all points along the floor line in any wall space are a maximum of _____ from an outlet in that space when measured horizontally.

a. 4’
b. 6’
c. 8’
d. 12’

Answer 21

b. 6’

[IRC E3901.2.1]

Question 22

Where installed in a storage closet, a recessed fluorescent luminaire shall be located so as to in the wall provide a minimum clearance of _____ between the fixture & the nearest point of a storage space.

a. 3’’
b. 6’’
c. 8’’
d. 12’’

Answer 22

b. 6’’

[IRC E4003.12(4)]

Question 23

Hanging-luminaires, lighting track & pendants, shall be located a minimum of _____ horizontally & ____ vertically from the top of a bathtub rim or shower stall threshold.

a. 2’, 7’
b. 2’, 8’
c. 3’, 7’
d. 3’, 8’

Answer 23

d. 3’, 8’

[IRC E4003.11]

Question 24

A luminaire that weighs a minimum ____ or exceeds____ in any dimension shall not be supported by the screw shell of a lamp holder.

a. 6 lbs, 14’’
b. 6 lbs, 16’’
c. 12 lbs, 14’’
d. 12 lbs, 16’’

Answer 24

b. 6 lbs, 16’’

[IRC E4004.4]

Question 25

All 125V receptacles located a maximum of ____ from the inside walls of a swimming pool shall be protected by a GFCI.

a. 10’
b. 15’
c. 20’
d. 30’

Answer 25

c. 20’

[IRC E4203.1.3]

Question 26

Where underground wiring is installed within 5’ of the inside walls of a swimming pool, minimum burial depth of ____ is required for intermediate metal conduit.

a. 6’’
b. 12’’
c. 18’’
d. 30’’

Answer 26

a. 6’’

[IRC TABLE E4203.7]

Question 27

Underground wiring within 5’ of an outdoor swimming pool is allowed for supplying pools, spa or hot tub equipment if the installation is made using _____ .

a. rigid metal conduit
b. intermediate metal conduit
c. a nonmetallic raceway system
d. ALL OF THE ABOVE

Answer 27

d. ALL OF THE ABOVE

[IRC E4203.7]

Question 28

[SCENARIO #1]
The main service fuses have been installed with the labels facing backward, to read their rating. No other markings are visible. You should ______

a. turn off the house power & remove a fuse to check its rating.
b. measure the diameter of the fuse to determine its rating.
c. report the main service fuse rating was not determinable
d. carefully insert your inspection mirror until the label is visible, then read the rating from the label.

Answer 28

c. report the main service fuse rating was not determinable

Question 29

[SCENARIO #2]
From the point where the ground & the neutral wires connect, there are 2 paths to ground. What are they?

a. Through the NEUTRAL wire or through the GROUNDING ELECTRODE CONDUCTOR to water pipes or ground.
b. Through the NEUTRAL wire or through the GROUNDING ELECTRODE CONDUCTOR to water or ground rods.
c. Through the HOT wire or through the GROUNDING ELECTRODE CONDUCTOR to water pipes or ground rods.
d. Through the NEUTRAL wire or through the GROUNDING ELECTRODE CONDUCTOR to water pipes or ground rods.

Answer 29

d. Through the NEUTRAL wire or through the GROUNDING ELECTRODE CONDUCTOR to water pipes or ground rods.

Question 30

[SCENARIO #3]
Describe how you would test a GFI receptacle during an inspection.

a. Use a conventional circuit tester & look at the test button on the receptacle.
b. Use a conventional circuit & operate the test button on the receptacle.
c. Use a conventional circuit tester & operate the test button on the receptacle.
d. Use a conventional circuit tester & ask the seller to push the test button on the receptacle. (wrong)

Answer 30

????

Question 31

The service disconnecting means shall consist of not more than ___ switches or circuit breakers mounted in a single enclosure or in a group of separate enclosures.

a. 3
b. 4
c. 6
d. 9

Answer 31

c. 6

[IRC E3601.7]

Question 32

Service disconnecting means shall not be installed in _____.

a. garages
b. kitchens
c. outside
d. bathrooms

Answer 32

d. bathrooms

[IRC E3601.6.2]

Question 33

SOP: Minimum Inspection Requirements for Electrical Systems

a. §535.228
b. §535.229
c. §535.230
d. §535.231

Answer 33

b. §535.229

SOP: Minimum Inspection Requirements for Electrical Systems

Question 34

[TEST QUESTION]
Which of the following continuous colors is permitted for ungrounded conductors?

a. Gray
b. White
c. Green
d. Red

Answer 34

d. Red

[IRC E3407.3]

Question 35

[TEST QUESTION]
Where more than one made electrode is used in a grounding electrode system each electrode shall be located a minimum of ____ from any other electrode of another grounding system.

a. 5’
b. 6’
c. 10’
d. 20’

Answer 35

b. 6’

[IRC E3608.3]

Question 36

[TEST QUESTION]
Which of the following wiring methods allows a maximum of 4, 90-degree bends between junction boxes?

a. Type ENT
b. Type IMC
c. Type RMC
d. Type EMT
e. ALL OF THE ABOVE

Answer 36

e. ALL OF THE ABOVE

[IRC E3802.1]

Question 37

[TEST QUESTION]
A convenience receptacle outlet shall be installed for the servicing of heating, A/C & refrigeration equipment located in an attic & crawl spaces. The receptacle shall be accessible & located on the ____ & within ____ of the heating, A/C & refrigeration equipment. Do NOT consider EXCEPTIONS.

a. equipment wall/10’
b. equipment support/15’
c. control panel/20’
d. same level/25’

Answer 37

d. same level/25’

[IRC E3901.12]

Question 38

[TEST QUESTION]
Where metallic plugs or plates are used with nonmetallic enclosures they shall be recessed a minimum of ___ from the outer surface of the enclosure.

a. 1/8’’
b. 1/4’’
c. 3/8’’
d. 1/2’’

Answer 38

b. 1/4’’

[IRC E3906.4]

Question 39

[TEST QUESTION]
In order to be used as a part of the grounding electrode system, interior metal water pipes shall be located a maximum of _____ from the entrance to the building.

a. 3’
b. 5’
c. 6’
d. 10’

Answer 39

b. 5’

[IRC E3608.1.1.1]

Question 40

[TEST QUESTION]
All of the following are good insulators EXCEPT:

a. Gold
b. Air
c. Ceramics
d. Glass

Answer 40

a. Gold

Best answer

Question 41

[TEST QUESTION]
The size of a fuse should be:

a. Larger than the rating of the wire.
b. The same as or smaller than the rating of the wire
c. The same as the panel rating
d. Based on the total load of the circuit.

Answer 41

b. The same as or smaller than the rating of the wire

[CSRE Book-3, pg 153]

Question 42

[TEST QUESTION]
A loose connection is:

a. NOT Dangerous
b. Routine
c. Similar to a damaged wire
d. Overload

Answer 42

c. Similar to a damaged wire

[CSRE Book-3, pg 154]

Question 43

[TEST QUESTION]
A ground fault is:

a. A short circuit
b. A ground wire
c. Electrical pressure
d. Electrical resistance

Answer 43

a. A short circuit

[CSRE Book-3, pg 153]

Question 44

[TEST QUESTION]
Electrical non-metallic tubing is an allowable wiring method in all BUT which one of the following applications?

a. Feeders
b. Branch circuits
c. Embedded in masonry
d. Direct burial

Answer 44

d. Direct burial

[IRC TABLE E3801.4]

Question 45

[TEST QUESTION]
Where non-metallic sheathed cable is used, the cable assembly including the sheath shall extend into the box a minimum of ____ through a non-metallic sheathed cable knockout opening.

a. 1/4’’
b. 3/8’’
c. 1/2’’
d. 3/4’’

Answer 45

a. 1/4’’

[IRC E3905.3.1]

Question 46

[TEST QUESTION]
In a wall constructed of wood or other combustible material, outlet boxes shall be installed so that the front edge of the box is set back a maximum of ____ from the finished surface.

a. 0.0 (box must be flush or project)
b. 1/8’’
c. 1/4’’
d. 3/8’’

Answer 46

a. 0.0 (box must be flush or project)

[IRC E3906.5]

Question 47

[TEST QUESTION]
All switches shall be installed so that the center of the grip of the operating handle, in its highest position, shall be located a maximum of ____ above the floor or working platform.

a. 6’
b. 6’ 6’’
c. 6’ 7’’
d. 6’ 9’’

Answer 47

c. 6’ 7’’

[IRC E4001.6]

Question 48

[TEST QUESTION]
What is the required receptacle rating for a 20 amp branch circuit supplying 2 or more receptacles or outlets?

a. 15 amps
b. 20 amps
c. 30 amps
d. 15 or 20 amps

Answer 48

d. 15 or 20 amps

[IRC E4002.1.2]

Question 49

[TEST QUESTION]
Ceiling suspended paddle fans weighing a maximum of ____ are permitted to be supported by outlet boxes identified for such use.

a. 18 lbs
b. 25 lbs
c. 32 lbs
d. 35 lbs

Answer 49

d. 35 lbs

[IRC E3905.8]

Question 50

[TEST QUESTION]
Underground service conductors not encased in concrete & buried 18’’ or more below grade shall have their location identified by a warning ribbon placed a minimum of ____ above the underground installation.

a. 4’’
b. 6’’
c. 8’’
d. 12’’

Answer 50

d. 12’’

[IRC E3803.2]

Question 51

[TEST QUESTION]
Lighting track shall be located a minimum of ____ above the finished floor unless protected from physical damage or the track operates at less than 30V rms open circuit voltage.

a. 5’, 0’’
b. 6’, 0’’
c. 6’, 4’’
d. 6’, 8’’

Answer 51

a. 5’, 0’’

[IRC E4005.4(8)]