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IEC 4TH YEAR ACTUAL EXAM WITH VERIFIED QUESTIONS AND CORRECT ANSWERS || GUARANTEED PASS | ALREADY GRADED A + | LATEST VERSION 2024/2025 $22.49
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IEC 4TH YEAR ACTUAL EXAM WITH VERIFIED QUESTIONS AND CORRECT ANSWERS || GUARANTEED PASS | ALREADY GRADED A + | LATEST VERSION 2024/2025
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Course
IEC 4TH YEAR
Institution
IEC 4TH YEAR
IEC 4TH YEAR ACTUAL EXAM WITH VERIFIED
QUESTIONS AND CORRECT ANSWERS ||
GUARANTEED PASS | ALREADY GRADED A + |
LATEST VERSION 2024/2025
What is the demand load for eighty receptacles located in a 15,000-square-foot
office building?
Select one:
a. 15,000
b. 12,200
c. ...
IEC 4TH YEAR ACTUAL EXAM WITH VERIFIED
QUESTIONS AND CORRECT ANSWERS ||
GUARANTEED PASS | ALREADY GRADED A + |
LATEST VERSION 2024/2025
What is the demand load for eighty receptacles located in a 15,000-square-foot
office building?
Select one:
a. 15,000
b. 12,200
c. 180
d. 14,400 - ANSWER-a. 15,000
For a fire alarm system, an SLC ___ allowed to be T-Tapped.
Select one:
a. is
b. is not - ANSWER-a. is
A ___ is an example of a fire alarm system initiating device.
Select one:
a. bell
b. heat detector - ANSWER-b. heat detector
,Determine the minimum size THW copper branch-circuit conductors the NEC®
requires to feed a 3-phase, continuous duty motor that draws 70 amps per phase.
Assume terminations are rated at 75ºC.
Select one:
a. 4 AWG
b. 2 AWG
c. 3 AWG
d. 1 AWG - ANSWER-c. 3 AWG
A feeder supplying two continuous duty, induction type, Design B, 208-volt, three-
phase motors (one 10 hp and one 71/2 hp) shall have a minimum ampacity of ___
amperes.
Select one:
a. 62.7
b. 55
c. 68.75
d. 38.5 - ANSWER-a. 62.7
An attachment plug and receptacle may be permitted to serve as a motor controller
if the motor is portable and has a maximum rating of ___ hp.
Select one:
a. 1/3
b. 1/4
c. 2
d. 1/2
e. 1/8 - ANSWER-a. 1/3
,Where motors are provided with terminal housings, the housings shall be ___ and
of substantial construction. I. nonmetallic II. metal
Select one:
a. I only
b. II only
c. either I or II
d. neither I nor II - ANSWER-b. II only
Branch-circuit conductors that supply a single motor used in a continuous duty
application shall have an ampacity of not less than ___ of the motor's full-load
current rating as determined by 430.6(A)(1).
Select one:
a. 190%
b. 150%
c. 50%
d. 58%
e. 125% - ANSWER-e. 125%
What is the full load current of a 30 hp, 230-volt, 3-phase, synchronous motor with
a 90% power factor?
Select one:
a. 76.23 amps
b. 86.62 amps
c. 63 amps
d. 69.3 amps - ANSWER-d. 69.3 amps
, Determine the minimum size THWN copper feeder conductors required by the
NEC® to supply the following 480-volt, continuous duty, 3-phase, induction-type,
design B motors* 1 - 40 hp * 1 - 50 hp * 1 - 60 hp
Select one:
a. 3/0 AWG
b. 4/0 AWG
c. 250 kcmil
d. 2/0 AWG - ANSWER-b. 4/0 AWG
What size THHN copper transformer secondary conductors will be required to feed
a 3-phase, 30 hp, 480-volt motor load? The secondary conductors terminate at a
fusible disconnect with 70-amp fuses. The - transformer primary is supplied by a
12,470-volt circuit protected with 10-amp fuses.
Select one:
a. 3
b. 10
c. 6
d. 4
e. 8 - ANSWER-d. 4
A 50 hp 230-volt, 3-phase squirrel cage motor has a full-load current of ___ amps.
Select one:
a. 143
b. 802
c. 130
d. 114
e. 179 - ANSWER-c. 130
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