NYC MASTER ELECTRICIAN EXAM | Verified Q&A | Latest
Update | Graded A+
1. What is the minimum insulation temperature rating required for branch circuit
conductors near a ballast?
100°C (212°F)
75°C (167°F)
90°C (194°F)
60°C (140°F)
2. What is the maximum over-current protection in Amps for panel boards with
snap switches rated at 30 Amps or less?
50 Amps
30 Amps
40 Amps
20 Amps
3. Dwelling units circuits running through another dwelling unit in common
areas. What percentage of change will require it to be brought up to the
current code.
75%
100%
50%
25%
,4. Describe the conditions under which a knife switch can be used as an
isolating switch.
A knife switch must always be opened under load to isolate the circuit.
A knife switch can be opened under load if it is rated for high
amperage.
A knife switch can be used as an isolating switch at any amperage
rating.
A knife switch can be used as an isolating switch only when it is not
opened under load.
5. If a panel board equipped with snap switches rated at 30 Amps is connected
to a circuit drawing 35 Amps, what would be the expected outcome
regarding safety and compliance?
The circuit would operate normally without any issues.
The circuit would likely trip the over-current protection to prevent
damage.
The panel board would catch fire due to excessive current.
The snap switches would automatically increase their rating.
6. Any switchboard which is not fully enclosed requires a space of ____ feet or
more between it and any combustible ceiling.
3.5 feet
3 feet
4 feet
2 feet
,7. Track lighting in residential insulation must not be installed ___ _.
in damp or wet locations
concealed
through walls or partitions
All of the above
8. According to NEC Section 547.10(B), what type of conductor should be used
to bond equipotential planes to the grounding system?
Bare or insulated solid copper conductor no smaller than No. 8
AWG
Copper conductor no smaller than No. 6 AWG
Insulated flexible copper conductor no smaller than No. 8 AWG
Aluminum conductor no smaller than No. 10 AWG
9. How many 4-way switches are required to control a light from five locations?
4
2
5
3
1
10. What is the minimum AWG size for a copper conductor used to connect the
equipotential plane in an agricultural building to the electrical grounding
system?
8 AWG
, 6 AWG
10 AWG
12 AWG
11. Unless specifically defined by the code, overcurrent protection shall not
exceed ____ amps for a 12 AWG copper conductor.
25
20
15
30
12. Service conductors must be located at least how many feet from sides of
doors, porches, decks, stairs, and operable windows?
3'
2'
6'
13. What terms in the NEC signify that a requirement is mandatory?
Shall
Can
Should
May
14. Describe the importance of grounding for electrical outlets in residential
settings.
Grounding is only necessary for outdoor electrical installations.
Update | Graded A+
1. What is the minimum insulation temperature rating required for branch circuit
conductors near a ballast?
100°C (212°F)
75°C (167°F)
90°C (194°F)
60°C (140°F)
2. What is the maximum over-current protection in Amps for panel boards with
snap switches rated at 30 Amps or less?
50 Amps
30 Amps
40 Amps
20 Amps
3. Dwelling units circuits running through another dwelling unit in common
areas. What percentage of change will require it to be brought up to the
current code.
75%
100%
50%
25%
,4. Describe the conditions under which a knife switch can be used as an
isolating switch.
A knife switch must always be opened under load to isolate the circuit.
A knife switch can be opened under load if it is rated for high
amperage.
A knife switch can be used as an isolating switch at any amperage
rating.
A knife switch can be used as an isolating switch only when it is not
opened under load.
5. If a panel board equipped with snap switches rated at 30 Amps is connected
to a circuit drawing 35 Amps, what would be the expected outcome
regarding safety and compliance?
The circuit would operate normally without any issues.
The circuit would likely trip the over-current protection to prevent
damage.
The panel board would catch fire due to excessive current.
The snap switches would automatically increase their rating.
6. Any switchboard which is not fully enclosed requires a space of ____ feet or
more between it and any combustible ceiling.
3.5 feet
3 feet
4 feet
2 feet
,7. Track lighting in residential insulation must not be installed ___ _.
in damp or wet locations
concealed
through walls or partitions
All of the above
8. According to NEC Section 547.10(B), what type of conductor should be used
to bond equipotential planes to the grounding system?
Bare or insulated solid copper conductor no smaller than No. 8
AWG
Copper conductor no smaller than No. 6 AWG
Insulated flexible copper conductor no smaller than No. 8 AWG
Aluminum conductor no smaller than No. 10 AWG
9. How many 4-way switches are required to control a light from five locations?
4
2
5
3
1
10. What is the minimum AWG size for a copper conductor used to connect the
equipotential plane in an agricultural building to the electrical grounding
system?
8 AWG
, 6 AWG
10 AWG
12 AWG
11. Unless specifically defined by the code, overcurrent protection shall not
exceed ____ amps for a 12 AWG copper conductor.
25
20
15
30
12. Service conductors must be located at least how many feet from sides of
doors, porches, decks, stairs, and operable windows?
3'
2'
6'
13. What terms in the NEC signify that a requirement is mandatory?
Shall
Can
Should
May
14. Describe the importance of grounding for electrical outlets in residential
settings.
Grounding is only necessary for outdoor electrical installations.
