IEC 2ND SEMESTER MIDTERM REVIEW
EXAM QUESTIONS AND ANSWERS 100%
PASS 2026/2027
A 3-gang switch box is to be constructed using metal device (switch) boxes. The box assembly
will contain two three-ways and one dimmer switch. External connectors will be used on the AC
cables entering the box. The AC does NOT contain a ground. Three 14-3 cables plus one 14-2
enter the box assembly. The shallowest boxes you can use are ___" deep. - ANS a.2
b.31/2
c.23/4
d.21/2
e.21/4
d
Electronic dimmers can be connected to an energized circuit if ___. - ANS a.the switch leg is
connected first
b.the ungrounded conductor is connected first
c.either a or b
d.neither a nor b
d
@2026 ALLRIGHTS RESERVED 1
,Figure 116.305 A 12-volt trolling motor on a boat is powered by two 12-volt batteries. Refer to
Figure 116.305. Which connection diagram shows the batteries correctly connected to the
trolling motor? - ANS a.I only
b.II only
c.either I or II
d.neither I nor II
a
Figure 119.103 Refer to Figure 119.103 for the plan view of a bedroom in a new house. A
receptacle must be installed no farther than ___ feet from the left edge of wall space . -
ANS a.2
b.6
c.4
d.12
b
Figure 119.565 Refer to Figure 119.565. All lamps are type mr 16 and are rated at 50 watts when
operated at 12 volts AC. An MR 16 is a type of low voltage lamp. The power used by each lamp
is ___ watts. - ANS a.600
b.12
c.200
d.16
e.50
@2026 ALLRIGHTS RESERVED 2
, e
If ___, electronic dimmers can be connected to an energized circuit.I. the switch leg is
connected before connecting the ungrounded conductorII. the ungrounded conductor is
connected before connecting the switch leg
a.II only - ANS a.II only
b.I only
c.neither I nor II
d.either I or II
c
One, two, or three circuit lighting track is available. - ANS a.True
b.False
a
Track lighting ___ be installed in wet or damp locations, where subject to physical damage, or in
concealed locations. - ANS a.can
b.cannot
b
Two 12-volt batteries would be connected in ___ to deliver the correct voltage to a 12-volt load.
- ANS a.series
b.parallel
@2026 ALLRIGHTS RESERVED 3
EXAM QUESTIONS AND ANSWERS 100%
PASS 2026/2027
A 3-gang switch box is to be constructed using metal device (switch) boxes. The box assembly
will contain two three-ways and one dimmer switch. External connectors will be used on the AC
cables entering the box. The AC does NOT contain a ground. Three 14-3 cables plus one 14-2
enter the box assembly. The shallowest boxes you can use are ___" deep. - ANS a.2
b.31/2
c.23/4
d.21/2
e.21/4
d
Electronic dimmers can be connected to an energized circuit if ___. - ANS a.the switch leg is
connected first
b.the ungrounded conductor is connected first
c.either a or b
d.neither a nor b
d
@2026 ALLRIGHTS RESERVED 1
,Figure 116.305 A 12-volt trolling motor on a boat is powered by two 12-volt batteries. Refer to
Figure 116.305. Which connection diagram shows the batteries correctly connected to the
trolling motor? - ANS a.I only
b.II only
c.either I or II
d.neither I nor II
a
Figure 119.103 Refer to Figure 119.103 for the plan view of a bedroom in a new house. A
receptacle must be installed no farther than ___ feet from the left edge of wall space . -
ANS a.2
b.6
c.4
d.12
b
Figure 119.565 Refer to Figure 119.565. All lamps are type mr 16 and are rated at 50 watts when
operated at 12 volts AC. An MR 16 is a type of low voltage lamp. The power used by each lamp
is ___ watts. - ANS a.600
b.12
c.200
d.16
e.50
@2026 ALLRIGHTS RESERVED 2
, e
If ___, electronic dimmers can be connected to an energized circuit.I. the switch leg is
connected before connecting the ungrounded conductorII. the ungrounded conductor is
connected before connecting the switch leg
a.II only - ANS a.II only
b.I only
c.neither I nor II
d.either I or II
c
One, two, or three circuit lighting track is available. - ANS a.True
b.False
a
Track lighting ___ be installed in wet or damp locations, where subject to physical damage, or in
concealed locations. - ANS a.can
b.cannot
b
Two 12-volt batteries would be connected in ___ to deliver the correct voltage to a 12-volt load.
- ANS a.series
b.parallel
@2026 ALLRIGHTS RESERVED 3
