Exam (elaborations)

IEC YEAR 1 Final Exam Study Questions With Correct Answers 2024 Latest Update

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IEC YEAR 1 Final Exam Study Questions With Correct Answers 2024 Latest Update/IEC YEAR 1 Final Exam Study Questions With Correct Answers 2024 Latest Update/IEC YEAR 1 Final Exam Study Questions With Correct Answers 2024 Latest Update

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iec year 1 final exam

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Course Nursing

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IEC YEAR 1 Final Exam Study Questions With Correct
Answers 2024 Latest Update
IEC YEAR 1 Final Exam Study Questions With Correct
Answers 2024 Latest Update

What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads?
a.
The load of higher resistance would overheat and probably be damaged.
b.
The load of lesser resistance would overheat and probably be damaged.
c.
No effect until one load is turned off or opens.
d.
No effect.

a.
The load of higher resistance would overheat and probably be damaged.

Circuits 7 and 9 share a neutral. This is a multiwire branch circuit. If Ckt. 7 is drawing 13 amps and Ckt. 9
is drawing 16 amps, how much current is flowing in the neutral?

a.3
b.13
c.29
d.16

3 Amps

Brainpower

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The Code reference that specifies the type of disconnecting means (circuit breaker for example) that can
be used on a multiwire branch circuit that feeds devices mounted on the same yoke [a stack switch or a
duplex receptacle for example] is ___.Note: Select N/A (not applicable) if there is not an NEC®
requirement.

a.Article 100
b.240.15(B)(1)
c.404.8(A)
d.N/A

b. 240.15(B)(1)

Voltmeters are connected in ___ with the load when used to measure voltage across a load in a circuit.

Parallel

,IEC YEAR 1 Final Exam Study Questions With Correct
Answers 2024 Latest Update
The neutral has been removed from the neutral bar in the circuit shown in Figure 128.407. Lamp 3 is
connected in ___ with Lamps 1 and 2.

Series
(3 wire parallel circuits turn to series when the neutral is disconnected from the neutral bar)

What is the minimum number of receptacles required in an unfinished basement?

a.2
b.4
c.1
d.0

c. 1

The overall diameter (including insulation) of a 250 kcmil THHN/THWN copper conductor is ___ inches?

a..082
b..397
c..765
d..711
e..575

d. 711

NEC Chapter 9 Table 5 pg 701

What part of the NEC® is a reference for calculating conduit fill where all conductors are the same size?

a.Article 100
b.Table 310.15(B)(16)
c.Annex C
d.Table 314.16(A)

c. Annex C

What is the minimum trade size Schedule 80 PVC required to contain four 8 AWG THHN/THWN copper
conductors?

a.1
b.3/4
c.11/4
d.11/2
e.none of these

b. 3/4

NEC Annex C

, IEC YEAR 1 Final Exam Study Questions With Correct
Answers 2024 Latest Update
Eleven #12, five #10, and six #6 THHN/THWN conductors will be installed in a run of EMT. The smallest
trade size EMT you can use is ___.

a.11/2
b.21/2
c.11/4
d.2
e.1

c. 11/4

NEC Chapter 9 Tables 4 and 5

A short length of EMT is run between two panels. The ampacity values for the conductors in this EMT
need not be derated, as long as the length of the EMT does not exceed ___.

a.12 inches
b.18 inches
c.24 inches

c. 24 inches

An extension ladder should extend ___ feet above the top of the building and be secured.

a.four
b.three
c.two
d.one

b. three

___ can be described as the point of demarcation between where the serving utility ends and the
premises wiring begins.

a.Service point
b.Attachment
c.Mast service
d.Lateral

a. Service point

Which term best describes a service lateral?

a.underground feed
b.overhead drop
c.service ground
d.service entrance

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