Master Electrician Exam Review question and
answers 2026 2027
1. branch circuit: That portion of a wiring system extending beyond the final overcurrent device is called
the:
2. Calculated load: The final sum of the computed loads, based on the minimum code requirements, is
the
3. Resistance: As compared to #10, a #8 wire of the same Iength has less:
4. 0.001 inch: One circular mil is the area of a circle whose diameter is:
5. 1,000,000 cm: A round bus-bar one inch in diameter, has a circular mil area of:
6. four times as great: A copper wire with twice the diameter of another wire has a current carrying
capacity:
7. 10.4: The specific resistance of copper wire @ 20° C in ohms per circular mil ft. is
8. permit current to flow: Conductance of an electric circuit is that property that will:
9. 1O ohms: The equivalent value of 0.1 mho is
10. directly proportional to its length: The resistance of copper wire is:
11. Feeder: The portion of a wiring system between a point of distribution and the branch circuit
overcurrent
device is
12. locking: GFCI protection at a carnival is not required for equipment at circuit if the receptacle is of
the
____________type
13. not less than 1 1/4 in. from: Where cables or nonmetallic raceways are installed through bored.holes
in joists, rafters, or wood members;holes shall be bored so that the edge of the hole is the nearest edge
-of the wood
member.
14. located on a balcony accessible only to qualified persons
located in a room only accessible to
qualified persons
elevated 8 ft or more above floor or other working surface: To guard live parts over 50V
, but less than 600V, equipment is permitted to be
15. 12Ft: Overhead feeder conductors shall have a minimum __________ vertical clearance over
residential
property and driveways, as well as those commercial areas not subject to truck traffic, where the
voltage is limited to
300 volts-to-ground.
16. 36 inches: Where rear access is required to work on de-energized parts on the back of enclosed
equipment,
a minimum working space of horizontally shall be provided.
17. 50': What is the maximum run length of a 18AWG fixture wire that is tapped on to a 20 amp branch
circuit?
18. power supply failure: When the service disconnecting means is a power-operated switch or circuit
breaker, it shall be able to be opened by hand in the event of a
19. 2 in of concrete: Conductors are considered outside a buildings when they are buried under not less
than
20. 8: In straight pull, the length of the box shall not be less than. ____times the trade size of the largest
raceway.
Master Electrician Exam Review
21. 18": At least one receptacle outlet shall be installed within of the top of a show window for each 12
linear feet
measured horizontally across its length
22. 1000A: Ground-fault protection of equipment shall be provided fro solidly grounded wye electrical
services of
more than 150 volts-to-ground, but not exceeding 600V phase-to..phase for each service disconnecting
means rated
23. 18": Receptacle outlets in floors shall not be counted as part of the required
number of receptacle outlets unless located within ______ of the wall
24. 50V: Exposed live parts of motors and controllers operating at or more between terminals shall be
guarded
against accidental contact by enclosure or by location
answers 2026 2027
1. branch circuit: That portion of a wiring system extending beyond the final overcurrent device is called
the:
2. Calculated load: The final sum of the computed loads, based on the minimum code requirements, is
the
3. Resistance: As compared to #10, a #8 wire of the same Iength has less:
4. 0.001 inch: One circular mil is the area of a circle whose diameter is:
5. 1,000,000 cm: A round bus-bar one inch in diameter, has a circular mil area of:
6. four times as great: A copper wire with twice the diameter of another wire has a current carrying
capacity:
7. 10.4: The specific resistance of copper wire @ 20° C in ohms per circular mil ft. is
8. permit current to flow: Conductance of an electric circuit is that property that will:
9. 1O ohms: The equivalent value of 0.1 mho is
10. directly proportional to its length: The resistance of copper wire is:
11. Feeder: The portion of a wiring system between a point of distribution and the branch circuit
overcurrent
device is
12. locking: GFCI protection at a carnival is not required for equipment at circuit if the receptacle is of
the
____________type
13. not less than 1 1/4 in. from: Where cables or nonmetallic raceways are installed through bored.holes
in joists, rafters, or wood members;holes shall be bored so that the edge of the hole is the nearest edge
-of the wood
member.
14. located on a balcony accessible only to qualified persons
located in a room only accessible to
qualified persons
elevated 8 ft or more above floor or other working surface: To guard live parts over 50V
, but less than 600V, equipment is permitted to be
15. 12Ft: Overhead feeder conductors shall have a minimum __________ vertical clearance over
residential
property and driveways, as well as those commercial areas not subject to truck traffic, where the
voltage is limited to
300 volts-to-ground.
16. 36 inches: Where rear access is required to work on de-energized parts on the back of enclosed
equipment,
a minimum working space of horizontally shall be provided.
17. 50': What is the maximum run length of a 18AWG fixture wire that is tapped on to a 20 amp branch
circuit?
18. power supply failure: When the service disconnecting means is a power-operated switch or circuit
breaker, it shall be able to be opened by hand in the event of a
19. 2 in of concrete: Conductors are considered outside a buildings when they are buried under not less
than
20. 8: In straight pull, the length of the box shall not be less than. ____times the trade size of the largest
raceway.
Master Electrician Exam Review
21. 18": At least one receptacle outlet shall be installed within of the top of a show window for each 12
linear feet
measured horizontally across its length
22. 1000A: Ground-fault protection of equipment shall be provided fro solidly grounded wye electrical
services of
more than 150 volts-to-ground, but not exceeding 600V phase-to..phase for each service disconnecting
means rated
23. 18": Receptacle outlets in floors shall not be counted as part of the required
number of receptacle outlets unless located within ______ of the wall
24. 50V: Exposed live parts of motors and controllers operating at or more between terminals shall be
guarded
against accidental contact by enclosure or by location
