NYC Master Electrician Exam Department
of Buildings Licensing Test (Latest Update
) Questions & Answers {Grade
A} 100% Correct
The walls and roofs of transformer vaults shall be constructed of materials that have
adequate structural strength for the conditions with a minimum fire-resistance rating
of ______ hours?
A) 2
B) 3
C) 4
D) 6 - correct answer B) 3
Article 450.42
,Unit equipment for emergency systems shall be on the same circuit that serves the
normal lighting in the area and connected ______ any local switches?
A) with
B) ahead of
C) after
D) downstream of - correct answer B) ahead of
Article 700.12 (B)
On a heavy starting duty wound rotor motor, the secondary resistor leads shall have
current capacity of at least?
A) 35%
B) 45%
,C) 85%
D) 110% - correct answer B) 45%
Article 430.23
Based on a current density of 1000 amps per sq inch, a copper bus bar measuring 3/16"
X 1 1/2" would carry a current of?
A) 1000 amps
B) 560 amps
C) 320 amps
D) 280 amps - correct answer D) 280 amps
CC= W X TH X 1000
, 3/16" X 1 1/2 "
.187 X 1.5 X 1000= 280.5
The maximum number of #10 current carrying conductors in a 1 1/4 inch EMT, for
general use is?
A) 32
B) 28
C) 25
D) 35 - correct answer B) 28
Annex C table 1
Dry type transformers installed outdoors must have a?
of Buildings Licensing Test (Latest Update
) Questions & Answers {Grade
A} 100% Correct
The walls and roofs of transformer vaults shall be constructed of materials that have
adequate structural strength for the conditions with a minimum fire-resistance rating
of ______ hours?
A) 2
B) 3
C) 4
D) 6 - correct answer B) 3
Article 450.42
,Unit equipment for emergency systems shall be on the same circuit that serves the
normal lighting in the area and connected ______ any local switches?
A) with
B) ahead of
C) after
D) downstream of - correct answer B) ahead of
Article 700.12 (B)
On a heavy starting duty wound rotor motor, the secondary resistor leads shall have
current capacity of at least?
A) 35%
B) 45%
,C) 85%
D) 110% - correct answer B) 45%
Article 430.23
Based on a current density of 1000 amps per sq inch, a copper bus bar measuring 3/16"
X 1 1/2" would carry a current of?
A) 1000 amps
B) 560 amps
C) 320 amps
D) 280 amps - correct answer D) 280 amps
CC= W X TH X 1000
, 3/16" X 1 1/2 "
.187 X 1.5 X 1000= 280.5
The maximum number of #10 current carrying conductors in a 1 1/4 inch EMT, for
general use is?
A) 32
B) 28
C) 25
D) 35 - correct answer B) 28
Annex C table 1
Dry type transformers installed outdoors must have a?
