YEAR 3 IEC FINAL REVIEW EXAM QUESTIONS AND ANSWERS GRADED A+ 2026

YEAR 3 IEC FINAL REVIEW EXAM
QUESTIONS AND ANSWERS GRADED A+
2026




___ is a type of overload relay used in a motor start.


a. Melting allow
b. Bimetallic
c. Magnetic

d. All of these - ANS All of these


A melting allow overload in a magnetic motor starter ____.
Select one:
a. actuates when excessive motor circuit current is present and opens only the affected motor
circuit power contacts on the starter
b. must be replaced after it operates
c. can be reset immediately after it operates
d. actuates when excessive motor circuit current is present and opens the control circuit to de-
energize the coil
e. actuates when excessive control circuit current is present and opens the control circuit to de-
energize the coil - ANS actuates when excessive motor circuit current is present and opens
the control circuit to de-energize the coil



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,A 240-volt, 3Φ motor would require a starter with a minimum of ___ power pole(s) to open the
circuit.


Select one:
a. 3
b. 1

c. 2 - ANS 3


Refer to Figure 321.13 Symbol S is a ___.


Select one:
a. circuit interrupter (or breaker)
b. disconnect (or safety switch)
c. circuit breaker with thermal OLs
d. circuit breaker with magnetic OLs

e. circuit breaker with thermal and magnetic OLs - ANS disconnect (or safety switch)


Inherent motor protection devices are built into the motor and are reset ___.


Select one:
a. manually

b. automatically - ANS automatically


Inherent motor protection devices are built into the ___ and are reset automatically.


Select one:
a. motor

b. starter - ANS motor

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2

,When light strings are utilized on a construction site, empty sockets or sockets with shattered
lamps should be replaced ___ after being reported.


Select one:
a. before the next work shift
b. immediately
c. within 72 hours

d. within 24 hours - ANS immediately


The OSHA regulations set the minimum lighting level for different areas on constructions sites.
These levels are dependant upon the task being performed in the area. For example, ___ foot
candles are required in an area used for offices than the number that would be required for
storage.


Select one:
a. more

b. less - ANS more


Where construction work is in progress, OSHA requires areas, aisles, stairs , ramps, runways,
corridors, offices, shops, and storage areas to be lighted.


Select one:
a. True

b. False - ANS True


Free-standing temporary light stands ___ permitted to be used on construction sites.


Select one:

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, a. are not

b. are - ANS are


Temporary electric splices are to be insulted and inaccessible. When these splices are more than
___ feet above the floor, they are considered to be inaccessible.


Select one:
a. 16
b. 8
c. 12
d. 10

e. 6 1/2 - ANS 8


During the period of construction, ___ foot candles are required in electrical equipment rooms.


Select one:
a. 3
b. 30
c. 5
d. 10

e. 12 - ANS 10


To provide convenience receptacles and lighting for temporary construction sites, a minimum of
__ circuits are required.


Select one:
a. two
b. one

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