IEC year 2 final review Questions and Correct Answers Latest Update, Graded A+
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IEC
Institution
IEC
efer to the information shown in Figure 234.151. When the tap for Motor 3
terminates in a safety switch, the maximum permitted size for DETD fuses in this
switch would be _____ A.
o :## 15
Refer to the information shown in Figure 234.151. When the tap for Motor 1
terminates in a breaker enc...
IEC year 2 final review Questions
and Correct Answers Latest Update,
Graded A+
Refer to the information shown in Figure 234.151. When the tap for Motor 3
terminates in a safety switch, the maximum permitted size for DETD fuses in this
switch would be _____ A.
o :## 15
Refer to the information shown in Figure 234.151. When the tap for Motor 1
terminates in a breaker enclosure, the maximum permitted size for an ITCB in this
enclosure would be ____ A.
o :## 70
Refer to the information shown in Figure 234.151. When th etap for Motor 3
terminates in a breaker enclosure, the maximum permitted size for an ITCB in this
enclose would be ____ A.
o :## none of these
Voltage Drop Scenario #3
The distance between the panel and a load is 150 feet. The circuit to the load
consists of two 12 AWG solid copper coated conductors that are connected to a 1-
Master01: DO NOT COPY AND PASTE!! August 22, 2024 Latest Update
,2|Page : 2024 | Grade A+
pole breaker in a 277/480-volt, 3Ø, 4-wire panel and the neutral bar. The load
draws 9.8 amps.
Refer to Voltage Drop Scenario #3. If the voltage drop is to be limited to 2.2%, this
is ___ volts.
o :## 6.09
Refer to Figure 221.404. The voltage applied to Heating Element B is ___ volts.
o :## 138.6
Refer to the nameplate and heater selection table, shown above in Figure 230.122.
For a correctly sized starter, the heater catalog number for the heaters is ___.
This motor is supplied power from a 120/240-volt, 3-phase, 4-wire panelboard.
o :## B32
Refer to the nameplate shown in Figure 230.122. The branch circuit for the motor
is supplied from a 240/120-volt, 3Ø, 4-wire panelboard. What is the minimum size
(3 wire + ground) SO cord that could be used as a flexible connection for the
motor?
o :## 8
Refer to the nameplate shown in Figure 230.122. This motor should draw ___ amps
at rated voltage when connected to Circuit 4-6-8 that is fed from a 3-pole breaker
in a 120/240-volt, 3Ø, 4-wire panelboard.
Master01: DO NOT COPY AND PASTE!! August 22, 2024 Latest Update
, 3|Page : 2024 | Grade A+
o :## 18.6
Two lighting circuits are supplied from a multiwire branch circuit that originates in
a 120/240 volt, 1Ø, 3-wire panelboard. Two, 20 Amp, 1-pole breakers are installed
in spaces 22 & 24 for the multiwire circuit. Circuit 22 has 2600 watts of lights
connected to it, and Circuit 24 has 2100 watts of lights connected to it. Which of
the following should happen to Circuit 22?
o :## An overload will occur and the breaker will trip.
Refer to Figure 221.402. If Ammeter 2 indicates 38.5 amps, the generator is
delivering ___ kW of power.
o :## 16.0
The service disconnecting means for a 3-phase service is permitted to consist of
___.
o :## any of the above
Nontime-delay fuses are to be installed in a safety switch adjacent to a motor. See
Figure 230.225. Fuses with a rating not exceeding ___ A are permitted.
o :## 100
The classification of a location, where ignitable concentrations of flammable
liquid-produced vapors or combustible liquid-produced vapors exist under normal
operating conditions, is ___.
Master01: DO NOT COPY AND PASTE!! August 22, 2024 Latest Update
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