MAINE MASTER ELECTRICIAN EXAM NEWEST 2026
UPDATE 100 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW VERSION!!
1. Which of the following is the primary purpose of a grounding conductor?
A. To carry normal load current
B. To protect against electric shock
C. To regulate voltage
D. To increase current capacity
Answer: B The grounding conductor provides a low-resistance path to earth
to protect against electric shock.
2. What is the maximum allowable voltage drop for feeders and branch
circuits according to the NEC?
A. 1%
B. 3%
C. 5%
D. 10%
Answer: B A voltage drop of 3% or less is recommended for feeders and
branch circuits to maintain efficiency and performance.
3. Which type of conduit is typically used outdoors for direct burial?
A. EMT
B. FMC
C. PVC
D. IMC
Answer: C PVC conduit is resistant to moisture and corrosion, making it
suitable for direct burial.
4. A GFCI receptacle is required in which location?
A. Living room
, B. Bathroom
C. Bedroom
D. Closet
Answer: B Bathrooms are wet locations, and the NEC requires GFCI
protection to prevent shock.
5. Which device automatically opens a circuit when current exceeds a
predetermined value?
A. Fuse
B. Circuit breaker
C. Transformer
D. Switch
Answer: B Circuit breakers trip automatically to prevent overheating and
potential fire hazards.
6. What is the purpose of a bonding jumper?
A. To increase voltage
B. To provide a path to ground between metal parts
C. To regulate current
D. To act as a main conductor
Answer: B Bonding jumpers ensure all metal parts are electrically connected
to prevent shock hazards.
7. In a 3-phase, 4-wire system, what is the voltage between any two phases?
A. Phase voltage
B. Line voltage
C. Neutral voltage
D. Ground voltage
Answer: B Line voltage is measured between any two phases in a 3-phase
system.
8. Which wire color is typically used for grounding conductors?
A. Black
B. Red
C. White
, D. Green or bare
Answer: D Green or bare copper is standard for grounding conductors.
9. What is the NEC minimum working space requirement in front of an
electrical panel?
A. 24 inches
B. 30 inches
C. 36 inches
D. 48 inches
Answer: C The NEC requires a minimum of 36 inches of clear working space
in front of electrical equipment.
10.Which overcurrent protection device is fastest in response to short-circuits?
A. Fuse
B. Circuit breaker
C. GFCI
D. AFCI
Answer: A Fuses react faster to short-circuit conditions than most circuit
breakers.
11.A transformer is rated at 480V primary and 120V secondary. What is its
turns ratio?
A. 2:1
B. 4:1
C. 5:1
D. 10:1
Answer: C Turns ratio = Primary voltage ÷ Secondary voltage = 480 ÷ 120 =
4:1.
(Correction: actually 480 ÷ 120 = 4, so answer should be B, let's fix)
Answer: B Turns ratio = 480 ÷ 120 = 4:1, meaning the primary has 4 times more
turns than the secondary.
12.What type of fire extinguisher is required for electrical fires?
A. Class A
UPDATE 100 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW VERSION!!
1. Which of the following is the primary purpose of a grounding conductor?
A. To carry normal load current
B. To protect against electric shock
C. To regulate voltage
D. To increase current capacity
Answer: B The grounding conductor provides a low-resistance path to earth
to protect against electric shock.
2. What is the maximum allowable voltage drop for feeders and branch
circuits according to the NEC?
A. 1%
B. 3%
C. 5%
D. 10%
Answer: B A voltage drop of 3% or less is recommended for feeders and
branch circuits to maintain efficiency and performance.
3. Which type of conduit is typically used outdoors for direct burial?
A. EMT
B. FMC
C. PVC
D. IMC
Answer: C PVC conduit is resistant to moisture and corrosion, making it
suitable for direct burial.
4. A GFCI receptacle is required in which location?
A. Living room
, B. Bathroom
C. Bedroom
D. Closet
Answer: B Bathrooms are wet locations, and the NEC requires GFCI
protection to prevent shock.
5. Which device automatically opens a circuit when current exceeds a
predetermined value?
A. Fuse
B. Circuit breaker
C. Transformer
D. Switch
Answer: B Circuit breakers trip automatically to prevent overheating and
potential fire hazards.
6. What is the purpose of a bonding jumper?
A. To increase voltage
B. To provide a path to ground between metal parts
C. To regulate current
D. To act as a main conductor
Answer: B Bonding jumpers ensure all metal parts are electrically connected
to prevent shock hazards.
7. In a 3-phase, 4-wire system, what is the voltage between any two phases?
A. Phase voltage
B. Line voltage
C. Neutral voltage
D. Ground voltage
Answer: B Line voltage is measured between any two phases in a 3-phase
system.
8. Which wire color is typically used for grounding conductors?
A. Black
B. Red
C. White
, D. Green or bare
Answer: D Green or bare copper is standard for grounding conductors.
9. What is the NEC minimum working space requirement in front of an
electrical panel?
A. 24 inches
B. 30 inches
C. 36 inches
D. 48 inches
Answer: C The NEC requires a minimum of 36 inches of clear working space
in front of electrical equipment.
10.Which overcurrent protection device is fastest in response to short-circuits?
A. Fuse
B. Circuit breaker
C. GFCI
D. AFCI
Answer: A Fuses react faster to short-circuit conditions than most circuit
breakers.
11.A transformer is rated at 480V primary and 120V secondary. What is its
turns ratio?
A. 2:1
B. 4:1
C. 5:1
D. 10:1
Answer: C Turns ratio = Primary voltage ÷ Secondary voltage = 480 ÷ 120 =
4:1.
(Correction: actually 480 ÷ 120 = 4, so answer should be B, let's fix)
Answer: B Turns ratio = 480 ÷ 120 = 4:1, meaning the primary has 4 times more
turns than the secondary.
12.What type of fire extinguisher is required for electrical fires?
A. Class A
