Maryland Journeyperson Electrician
Exam Practice Questions And Correct
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1. Which National Electrical Code (NEC) article primarily covers the
general requirements for branch circuits in residential and commercial
installations?
A. Article 110
B. Article 210
C. Article 250
D. Article 300
B. Article 210
Article 210 governs branch circuits, including receptacle spacing, required
outlets, branch-circuit ratings, and GFCI/AFCI protection requirements
commonly tested on journeyperson electrician examinations.
2. A continuous load is defined by the NEC as a load where the maximum
current is expected to continue for at least:
,A. 30 minutes
B. 1 hour
C. 3 hours
D. 8 hours
C. 3 hours
The NEC defines a continuous load as one where the maximum current is
expected to continue for 3 hours or more, which directly impacts conductor
and overcurrent device sizing calculations.
3. What is the minimum working clearance depth required in front of
120/240-volt electrical equipment under Condition 2 according to NEC
Table 110.26(A)(1)?
A. 2 feet
B. 2.5 feet
C. 3 feet
D. 4 feet
C. 3 feet
Condition 2 applies when grounded surfaces exist on one side and exposed
live parts on the other. For systems up to 150 volts to ground, the required
working clearance depth is 3 feet.
4. Which conductor color is generally permitted for grounding
conductors?
A. White
B. Gray
C. Green
D. Orange
C. Green
,The NEC identifies green or green with yellow stripes as acceptable
equipment grounding conductor identification colors. White and gray are
reserved for grounded conductors.
5. What is the ampacity of a 12 AWG copper conductor with THHN
insulation rated at 90°C before adjustment or correction factors are
applied?
A. 20 amperes
B. 25 amperes
C. 30 amperes
D. 35 amperes
C. 30 amperes
According to NEC Table 310.16, 12 AWG copper THHN conductors in the
90°C column have an ampacity of 30 amperes prior to any required
derating.
6. What type of receptacle is required in bathrooms of dwelling units?
A. Standard duplex receptacle only
B. AFCI-protected receptacle only
C. Tamper-resistant receptacle only
D. GFCI-protected receptacle
D. GFCI-protected receptacle
Bathroom receptacles in dwelling units are required to have GFCI
protection to reduce shock hazards in wet or damp environments.
7. When conductors are installed in parallel, each conductor must
generally be at least:
A. 1 AWG
B. 1/0 AWG
, C. 2/0 AWG
D. 4/0 AWG
B. 1/0 AWG
The NEC generally permits conductors to be run in parallel only when they
are 1/0 AWG or larger, ensuring equal current sharing between conductors.
8. Which NEC article covers grounding and bonding requirements?
A. Article 110
B. Article 220
C. Article 250
D. Article 430
C. Article 250
Article 250 contains comprehensive rules for grounding and bonding
electrical systems, equipment, and enclosures to ensure safe fault-current
paths.
9. What is the minimum cover requirement for rigid metal conduit
installed under a residential driveway?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
C. 18 inches
NEC Table 300.5 establishes minimum burial depths, and rigid metal
conduit under residential driveways generally requires at least 18 inches of
cover.
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which National Electrical Code (NEC) article primarily covers the
general requirements for branch circuits in residential and commercial
installations?
A. Article 110
B. Article 210
C. Article 250
D. Article 300
B. Article 210
Article 210 governs branch circuits, including receptacle spacing, required
outlets, branch-circuit ratings, and GFCI/AFCI protection requirements
commonly tested on journeyperson electrician examinations.
2. A continuous load is defined by the NEC as a load where the maximum
current is expected to continue for at least:
,A. 30 minutes
B. 1 hour
C. 3 hours
D. 8 hours
C. 3 hours
The NEC defines a continuous load as one where the maximum current is
expected to continue for 3 hours or more, which directly impacts conductor
and overcurrent device sizing calculations.
3. What is the minimum working clearance depth required in front of
120/240-volt electrical equipment under Condition 2 according to NEC
Table 110.26(A)(1)?
A. 2 feet
B. 2.5 feet
C. 3 feet
D. 4 feet
C. 3 feet
Condition 2 applies when grounded surfaces exist on one side and exposed
live parts on the other. For systems up to 150 volts to ground, the required
working clearance depth is 3 feet.
4. Which conductor color is generally permitted for grounding
conductors?
A. White
B. Gray
C. Green
D. Orange
C. Green
,The NEC identifies green or green with yellow stripes as acceptable
equipment grounding conductor identification colors. White and gray are
reserved for grounded conductors.
5. What is the ampacity of a 12 AWG copper conductor with THHN
insulation rated at 90°C before adjustment or correction factors are
applied?
A. 20 amperes
B. 25 amperes
C. 30 amperes
D. 35 amperes
C. 30 amperes
According to NEC Table 310.16, 12 AWG copper THHN conductors in the
90°C column have an ampacity of 30 amperes prior to any required
derating.
6. What type of receptacle is required in bathrooms of dwelling units?
A. Standard duplex receptacle only
B. AFCI-protected receptacle only
C. Tamper-resistant receptacle only
D. GFCI-protected receptacle
D. GFCI-protected receptacle
Bathroom receptacles in dwelling units are required to have GFCI
protection to reduce shock hazards in wet or damp environments.
7. When conductors are installed in parallel, each conductor must
generally be at least:
A. 1 AWG
B. 1/0 AWG
, C. 2/0 AWG
D. 4/0 AWG
B. 1/0 AWG
The NEC generally permits conductors to be run in parallel only when they
are 1/0 AWG or larger, ensuring equal current sharing between conductors.
8. Which NEC article covers grounding and bonding requirements?
A. Article 110
B. Article 220
C. Article 250
D. Article 430
C. Article 250
Article 250 contains comprehensive rules for grounding and bonding
electrical systems, equipment, and enclosures to ensure safe fault-current
paths.
9. What is the minimum cover requirement for rigid metal conduit
installed under a residential driveway?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
C. 18 inches
NEC Table 300.5 establishes minimum burial depths, and rigid metal
conduit under residential driveways generally requires at least 18 inches of
cover.
