MASTER ELECTRICIAN PRACTICE EXAM
Question Answers) Plus Rationales 2026 Q&A
|Instant Download Pdf And Correct Answers
(Verified
1. What is the minimum size copper equipment grounding conductor
required for a 200-amp residential service?
A. 4 AWG
B. 6 AWG
C. 8 AWG
D. 2 AWG
Rationale: NEC tables require a 6 AWG copper grounding electrode
conductor for a 200-amp service.
2. What is the maximum number of 90° bends allowed in a single run
of EMT between pull points?
A. 360°
B. 360° total
C. 270°
D. 180°
Rationale: Only 360° total bend is allowed to facilitate conductor
pulling.
,3. Underground feeders must be buried at least how deep when using
rigid metal conduit?
A. 6 in.
B. 12 in.
C. 6 in.
D. 24 in.
Rationale: Rigid metal conduit permits the shallowest burial depth at
6 inches.
4. What is the standard voltage drop recommendation for branch
circuits?
A. 10%
B. 3%
C. 5%
D. 2%
Rationale: The recommended maximum branch-circuit voltage drop is
3% for good performance.
5. Which of the following requires GFCI protection?
A. Bedroom receptacle
B. Living room receptacle
C. Garage receptacle
D. Hallway lighting
Rationale: Garages must have GFCI protection for all 125-V, 15- and
20-A receptacles.
, 6. What is the minimum size copper conductor allowed for a 15-amp
branch circuit?
A. 16 AWG
B. 14 AWG
C. 12 AWG
D. 10 AWG
Rationale: A 15-amp circuit requires 14 AWG copper minimum.
7. What is the maximum allowed load on a 20-amp branch circuit?
A. 24 A
B. 16 A continuous
C. 20 A continuous
D. 18 A
Rationale: Continuous loads must be at 125% of rating; thus 20 A × 0.8
= 16 A max.
8. Which conductor must always be re-identified if used as a grounded
conductor?
A. Black
B. Red
C. Blue
D. White or gray if repurposed from another color
Rationale: Grounded (neutral) conductors must be white/gray or re-
identified as such.
Question Answers) Plus Rationales 2026 Q&A
|Instant Download Pdf And Correct Answers
(Verified
1. What is the minimum size copper equipment grounding conductor
required for a 200-amp residential service?
A. 4 AWG
B. 6 AWG
C. 8 AWG
D. 2 AWG
Rationale: NEC tables require a 6 AWG copper grounding electrode
conductor for a 200-amp service.
2. What is the maximum number of 90° bends allowed in a single run
of EMT between pull points?
A. 360°
B. 360° total
C. 270°
D. 180°
Rationale: Only 360° total bend is allowed to facilitate conductor
pulling.
,3. Underground feeders must be buried at least how deep when using
rigid metal conduit?
A. 6 in.
B. 12 in.
C. 6 in.
D. 24 in.
Rationale: Rigid metal conduit permits the shallowest burial depth at
6 inches.
4. What is the standard voltage drop recommendation for branch
circuits?
A. 10%
B. 3%
C. 5%
D. 2%
Rationale: The recommended maximum branch-circuit voltage drop is
3% for good performance.
5. Which of the following requires GFCI protection?
A. Bedroom receptacle
B. Living room receptacle
C. Garage receptacle
D. Hallway lighting
Rationale: Garages must have GFCI protection for all 125-V, 15- and
20-A receptacles.
, 6. What is the minimum size copper conductor allowed for a 15-amp
branch circuit?
A. 16 AWG
B. 14 AWG
C. 12 AWG
D. 10 AWG
Rationale: A 15-amp circuit requires 14 AWG copper minimum.
7. What is the maximum allowed load on a 20-amp branch circuit?
A. 24 A
B. 16 A continuous
C. 20 A continuous
D. 18 A
Rationale: Continuous loads must be at 125% of rating; thus 20 A × 0.8
= 16 A max.
8. Which conductor must always be re-identified if used as a grounded
conductor?
A. Black
B. Red
C. Blue
D. White or gray if repurposed from another color
Rationale: Grounded (neutral) conductors must be white/gray or re-
identified as such.
