IEC First Year Exam Study Pack 2027
– Latest Questions with Well-Verified
Answers | Guaranteed A+ Pass
What is the result if the neutral wire becomes open on a
multiwire circuit having unequal loads? - ANS✔✔---The
load of higher resistance would overheat and probably
be damaged.
Refer to the panel schedule shown in Figure 128.231. If
the neutral is removed from the neutral bar, volts
will be applied to the TV. - ANS✔✔---150
A 12/3 cable is installed from a 120/240-V, 1Ø panel and
feeds a split-wired duplex receptacle. One "hot" is
connected to a 20A breaker in panel space 1. The
second "hot" is connected to a 20A breaker in space 3. A
16-amp load is connected to the upper receptacle and a
14-amp load is connected to the lower
messages.downloaded_
, receptacle. Which of the following will happen if the
neutral is removed from the receptacle? - ANS✔✔---
Because a higher voltage will be applied, 120-volt
equipment could be destroyed.
Refer to Figure 129.106. With the equipment energized
and the power used by the element connected at T3 & T4
is 0.3kW, the power used by the equipment (all 4
elements) .-
ANS✔✔---is 1.2 kW
- ANS✔✔---
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 .-
ANS✔✔-
--24 in.
An extension ladder should extend feet above the top
of the building and be secured. - ANS✔✔---3ft.
What is the monthly energy cost to operate a 250-watt
high-pressure sodium lamp? Electricity costs $0.15 per
kW-hr and the lamp will be ON for 8 hours per day. There
are 30 days in a billing month. - ANS✔✔---$9.00
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 .
- ANS✔✔---240.15(B)(1)
can be described as the point of demarcation
between where the serving utility ends and the premises
messages.downloaded_
– Latest Questions with Well-Verified
Answers | Guaranteed A+ Pass
What is the result if the neutral wire becomes open on a
multiwire circuit having unequal loads? - ANS✔✔---The
load of higher resistance would overheat and probably
be damaged.
Refer to the panel schedule shown in Figure 128.231. If
the neutral is removed from the neutral bar, volts
will be applied to the TV. - ANS✔✔---150
A 12/3 cable is installed from a 120/240-V, 1Ø panel and
feeds a split-wired duplex receptacle. One "hot" is
connected to a 20A breaker in panel space 1. The
second "hot" is connected to a 20A breaker in space 3. A
16-amp load is connected to the upper receptacle and a
14-amp load is connected to the lower
messages.downloaded_
, receptacle. Which of the following will happen if the
neutral is removed from the receptacle? - ANS✔✔---
Because a higher voltage will be applied, 120-volt
equipment could be destroyed.
Refer to Figure 129.106. With the equipment energized
and the power used by the element connected at T3 & T4
is 0.3kW, the power used by the equipment (all 4
elements) .-
ANS✔✔---is 1.2 kW
- ANS✔✔---
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 .-
ANS✔✔-
--24 in.
An extension ladder should extend feet above the top
of the building and be secured. - ANS✔✔---3ft.
What is the monthly energy cost to operate a 250-watt
high-pressure sodium lamp? Electricity costs $0.15 per
kW-hr and the lamp will be ON for 8 hours per day. There
are 30 days in a billing month. - ANS✔✔---$9.00
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 .
- ANS✔✔---240.15(B)(1)
can be described as the point of demarcation
between where the serving utility ends and the premises
messages.downloaded_
