Master Electrician's Exam Prep Guide
Exams #10-12(100% Correct)
At carnivals and fairs, service equipment shall not be installed in a location that is accessible to
unqualified persons, UNLESS the equipment ____.
A. has a voltage to ground of not more than 125 volts
B. is provided with GFCI protection
C. is lockable
D. is installed at a height of more than 6 feet - ANSWERC. is lockable
pg. 463
Where the NEC specifies that one equipment shall be "within sight from" or "within sight of" another
equipment, the specified equipment is to be visible and NOT more than ____ from the other.
A. 50 feet
B. 100 feet
C. 125 feet
D. 200 feet - ANSWERA. 50 feet
pg. 37
As a general rule, where a cable is installed parallel to framing members, the cable shall be installed
so that the nearest edge of the cable is NOT less than ____ from the nearest edge of the framing
member.
A. 3/4 in.
B. 1 in.
C. 1 1/4 in.
D. 1 1/2 in. - ANSWERC. 1 1/4 in.
pg. 141
Generally, how many grounded conductors are permitted to be terminated under an individual
terminal within a switchboard or panelboard where the equipment operates at less than 1,000 volts?
,A. four
B. three
C. two
D. one - ANSWERD. one
pg. 274
The service equipment provided for a mobile home shall be located in sight from and NOT more than
____ from the exterior wall of the mobile home it serves.
A. 50 feet
B. 30 feet
C. 75 feet
D. 100 feet - ANSWERB. 30 feet
pg. 479
What is the MAX. number of size 1/0 AWG THH/THWN copper current-carrying conductors allowed
by the NEC at any cross-sectional area of a 4in. x 4 in. metallic wireway?
A. 17
B. 18
C. 19
D. 20 - ANSWERA. 17
pg. 229, 701
Where electrical boxes are installed in a wall having a combustible finish and located above a kitchen
wall countertop they shall be installed ____.
A. recessed 1/4 in.
B. recessed a min. of 1/2 in.
C. projected out not less than 1/4 in. from the finish surface
D. flush or projected from the finish surface - ANSWERD. flush or projected from the finish surface
pg. 185
A single phase, 125-volt, 15- or 20- ampere receptacle outlet shall be installed at each residential
kitchen, breakfast room, or dining room wall countertop and work surface that is at LEAST ____ or
wider.
, A. 12 inches
B. 24 inches
C. 36 inches
D. 20 inches - ANSWERA. 12 inches
pg. 69
A one-family dwelling unit is to have the following fastened in place appliances installed:
1,200 VA dishwasher
4,000 VA water heater
1,150 VA garbage disposer
700 VA attic fan
1,920 VA garage door opener
Direct buried cables installed under an open field vacant property must have a MIN. cover depth of
____ when the applied voltage is not more than 600 volts.
A. 24 inches
B. 18 inches
C. 12 inches
D. 30 inches - ANSWERA. 24 inches
pg. 143
Shore power for boats docked in marinas and boatyards shall be provided by single receptacles that
are of the locking- and grounding-type, mounted at least 12 inches above the deck surface, and rated
NOT less than ____.
A. 50 amperes
B. 40 amperes
C. 30 amperes
D. 20 amperes - ANSWERC. 30 amperes
pg. 502
For electrical systems over 1000 volts, where pulls of conductors in junction boxes are being made,
the length of the box shall NOT be less than ____ the outside diameter of the largest shielded or
lead-covered conductor or cable entering the box.
A. 8 times
Exams #10-12(100% Correct)
At carnivals and fairs, service equipment shall not be installed in a location that is accessible to
unqualified persons, UNLESS the equipment ____.
A. has a voltage to ground of not more than 125 volts
B. is provided with GFCI protection
C. is lockable
D. is installed at a height of more than 6 feet - ANSWERC. is lockable
pg. 463
Where the NEC specifies that one equipment shall be "within sight from" or "within sight of" another
equipment, the specified equipment is to be visible and NOT more than ____ from the other.
A. 50 feet
B. 100 feet
C. 125 feet
D. 200 feet - ANSWERA. 50 feet
pg. 37
As a general rule, where a cable is installed parallel to framing members, the cable shall be installed
so that the nearest edge of the cable is NOT less than ____ from the nearest edge of the framing
member.
A. 3/4 in.
B. 1 in.
C. 1 1/4 in.
D. 1 1/2 in. - ANSWERC. 1 1/4 in.
pg. 141
Generally, how many grounded conductors are permitted to be terminated under an individual
terminal within a switchboard or panelboard where the equipment operates at less than 1,000 volts?
,A. four
B. three
C. two
D. one - ANSWERD. one
pg. 274
The service equipment provided for a mobile home shall be located in sight from and NOT more than
____ from the exterior wall of the mobile home it serves.
A. 50 feet
B. 30 feet
C. 75 feet
D. 100 feet - ANSWERB. 30 feet
pg. 479
What is the MAX. number of size 1/0 AWG THH/THWN copper current-carrying conductors allowed
by the NEC at any cross-sectional area of a 4in. x 4 in. metallic wireway?
A. 17
B. 18
C. 19
D. 20 - ANSWERA. 17
pg. 229, 701
Where electrical boxes are installed in a wall having a combustible finish and located above a kitchen
wall countertop they shall be installed ____.
A. recessed 1/4 in.
B. recessed a min. of 1/2 in.
C. projected out not less than 1/4 in. from the finish surface
D. flush or projected from the finish surface - ANSWERD. flush or projected from the finish surface
pg. 185
A single phase, 125-volt, 15- or 20- ampere receptacle outlet shall be installed at each residential
kitchen, breakfast room, or dining room wall countertop and work surface that is at LEAST ____ or
wider.
, A. 12 inches
B. 24 inches
C. 36 inches
D. 20 inches - ANSWERA. 12 inches
pg. 69
A one-family dwelling unit is to have the following fastened in place appliances installed:
1,200 VA dishwasher
4,000 VA water heater
1,150 VA garbage disposer
700 VA attic fan
1,920 VA garage door opener
Direct buried cables installed under an open field vacant property must have a MIN. cover depth of
____ when the applied voltage is not more than 600 volts.
A. 24 inches
B. 18 inches
C. 12 inches
D. 30 inches - ANSWERA. 24 inches
pg. 143
Shore power for boats docked in marinas and boatyards shall be provided by single receptacles that
are of the locking- and grounding-type, mounted at least 12 inches above the deck surface, and rated
NOT less than ____.
A. 50 amperes
B. 40 amperes
C. 30 amperes
D. 20 amperes - ANSWERC. 30 amperes
pg. 502
For electrical systems over 1000 volts, where pulls of conductors in junction boxes are being made,
the length of the box shall NOT be less than ____ the outside diameter of the largest shielded or
lead-covered conductor or cable entering the box.
A. 8 times
