Ohio Master Electrician Exam With
Actual Questions & Verified
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Verified For Guaranteed Pass Graded
A+/2026 /Latest Update/Instant
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1. Which type of wiring method is generally permitted for concealed work
in residential dwellings?
A. FMC (Flexible Metal Conduit)
B. MC (Metal-Clad Cable)
C. NM (Nonmetallic Sheathed Cable)
D. RMC (Rigid Metal Conduit)
C. NM (Nonmetallic Sheathed Cable)
NM cable is widely used in residential concealed wiring because it is easy to
install and allowed by code for interior, dry locations.
2. What is the minimum height above finished grade for service-entrance
conductors over a driveway?
A. 10 feet
B. 12 feet
C. 14 feet
D. 18 feet
C. 14 feet
The NEC requires a minimum of 14 feet clearance for service-entrance
conductors over residential driveways to prevent physical damage.
, 3. Ground-fault circuit interrupters (GFCIs) are required for which locations
in a dwelling?
A. Bedrooms
B. Bathrooms
C. Attics
D. Living rooms
B. Bathrooms
Bathrooms are considered wet locations, requiring GFCI protection to prevent
electrical shock.
4. What is the maximum voltage drop recommended for branch circuits to
ensure efficient operation?
A. 1%
B. 3%
C. 5%
D. 10%
B. 3%
The NEC recommends a maximum voltage drop of 3% for branch circuits to
ensure proper operation of connected equipment.
5. Which conductor color is typically used for grounding in a residential
installation?
A. Black
B. Red
C. White
D. Green
D. Green
Green or bare copper is reserved for grounding conductors according to NEC
standards.
6. In a panelboard, what device provides protection against overcurrent?
A. Transformer
B. Circuit breaker
C. Conduit
D. Switch
, B. Circuit breaker
Circuit breakers automatically interrupt current flow when an overload or
short circuit occurs, protecting conductors and equipment.
7. What is the minimum burial depth for rigid PVC conduit in a residential
area under a driveway?
A. 12 inches
B. 18 inches
C. 24 inches
D. 30 inches
C. 24 inches
Rigid PVC conduit must be buried at least 24 inches deep under residential
driveways to prevent physical damage.
8. Which type of wiring method is suitable for damp or wet locations?
A. NM cable
B. UF cable
C. MC cable
D. BX cable
B. UF cable
Underground Feeder (UF) cable is rated for wet or damp locations and can be
used underground or in concrete.
9. The primary purpose of an equipment grounding conductor is to:
A. Reduce voltage drop
B. Provide a current path for normal operation
C. Carry fault current to trip the overcurrent device
D. Limit the power consumption
C. Carry fault current to trip the overcurrent device
Grounding conductors carry fault currents safely to allow breakers or fuses to
operate and prevent shock hazards.
10.For a 120/240V single-phase service, which configuration is correct?
A. One hot, one neutral, one ground
B. Two hots, one neutral, one ground
Actual Questions & Verified
Answers,Plus Rationales/Expert
Verified For Guaranteed Pass Graded
A+/2026 /Latest Update/Instant
Download Pdf
1. Which type of wiring method is generally permitted for concealed work
in residential dwellings?
A. FMC (Flexible Metal Conduit)
B. MC (Metal-Clad Cable)
C. NM (Nonmetallic Sheathed Cable)
D. RMC (Rigid Metal Conduit)
C. NM (Nonmetallic Sheathed Cable)
NM cable is widely used in residential concealed wiring because it is easy to
install and allowed by code for interior, dry locations.
2. What is the minimum height above finished grade for service-entrance
conductors over a driveway?
A. 10 feet
B. 12 feet
C. 14 feet
D. 18 feet
C. 14 feet
The NEC requires a minimum of 14 feet clearance for service-entrance
conductors over residential driveways to prevent physical damage.
, 3. Ground-fault circuit interrupters (GFCIs) are required for which locations
in a dwelling?
A. Bedrooms
B. Bathrooms
C. Attics
D. Living rooms
B. Bathrooms
Bathrooms are considered wet locations, requiring GFCI protection to prevent
electrical shock.
4. What is the maximum voltage drop recommended for branch circuits to
ensure efficient operation?
A. 1%
B. 3%
C. 5%
D. 10%
B. 3%
The NEC recommends a maximum voltage drop of 3% for branch circuits to
ensure proper operation of connected equipment.
5. Which conductor color is typically used for grounding in a residential
installation?
A. Black
B. Red
C. White
D. Green
D. Green
Green or bare copper is reserved for grounding conductors according to NEC
standards.
6. In a panelboard, what device provides protection against overcurrent?
A. Transformer
B. Circuit breaker
C. Conduit
D. Switch
, B. Circuit breaker
Circuit breakers automatically interrupt current flow when an overload or
short circuit occurs, protecting conductors and equipment.
7. What is the minimum burial depth for rigid PVC conduit in a residential
area under a driveway?
A. 12 inches
B. 18 inches
C. 24 inches
D. 30 inches
C. 24 inches
Rigid PVC conduit must be buried at least 24 inches deep under residential
driveways to prevent physical damage.
8. Which type of wiring method is suitable for damp or wet locations?
A. NM cable
B. UF cable
C. MC cable
D. BX cable
B. UF cable
Underground Feeder (UF) cable is rated for wet or damp locations and can be
used underground or in concrete.
9. The primary purpose of an equipment grounding conductor is to:
A. Reduce voltage drop
B. Provide a current path for normal operation
C. Carry fault current to trip the overcurrent device
D. Limit the power consumption
C. Carry fault current to trip the overcurrent device
Grounding conductors carry fault currents safely to allow breakers or fuses to
operate and prevent shock hazards.
10.For a 120/240V single-phase service, which configuration is correct?
A. One hot, one neutral, one ground
B. Two hots, one neutral, one ground
