IEC FIRST YEAR EXAM 2025/2026 QUESTIONS WITH
SOLUTIONS GRADED A+
✔✔terminations of RG-6 cable are made using __ connectors (jacks) - ✔✔F (connector)
only
✔✔Home automation controllers that utilize radio frequency (RF) ___ - ✔✔can send
signals through walls
✔✔A disconnecting means (or means of disconnect) for a swimming pool circulation
pump must be installed ___ - ✔✔at least 5' from the inside of the pool, readily
accessible, so that it is visible from the pump
✔✔When receptacles that provide power for water pump motors or other loads directly
related to the circulation and sanitation system are located 6' and 10' from inside walls
of the pool, these receptacles are required to meet which of the following conditions? -
✔✔They are of the grounding type, they have GFCI protection
✔✔what is the minimum number of 125-volt, 15- or 20-ampere convenience receptacles
that the NEC requires to be installed near a permanently installed pool locates in you
neighbors backyard - ✔✔one
✔✔a 20-amp, 120-volt duplex convenience receptacle near a pool shall be located so
that it is ___ feet or more from the inside edge of the swimming pool - ✔✔6'
✔✔Generally, safety switches and wall switches must be located at least ___ from the
inside edge of the swimming pool - ✔✔5'
✔✔When calculating residential service load, ___ is allowed for each branch circuit
serving laundry receptacles - ✔✔1,500 volt-amperes
✔✔the minimum size service disconnect for a single-family dwelling with a computed
load of kVA is ___ amperes - ✔✔60
✔✔For a 125-amp, 120/240-V, 3W residential service, ____ AWG copper THHN/THWN
conductors are the smallest permitted for the underground conductors - ✔✔2
✔✔for purposes of calculating a residential service, the general-purpose lighting load is
calculated at ___ per sq. ft. of area - ✔✔3 volt-amperes
✔✔plug fuses can be used on which of the following voltage systems? - ✔✔120/208-
volt, 1-ph, 3-wire
120/208-volt, 3ø, 4-wire
, (anything under 150- volts)
✔✔the NEC has limitations on where OCPDs, such as panelboard installations, can be
installed due to the presence of combustible materials. these are specified at ___ -
✔✔none
✔✔A breaker panel is permitted to be located ___ - ✔✔in an electrical room in a school
in a bathroom in a restaurant
✔✔the disconnect switch is fused with plug fuses and supplied from a 2-pole breaker in
space 8-10 in the 277/480-volt, 3ø, 4-wire panel. Is a code violation - ✔✔Yes
✔✔Usually, load centers are not available with "bolt-on" circuit breakers - ✔✔true
✔✔when determining the minimum size of a grounding electrode conductor, table __ is
used - ✔✔250.66
✔✔if connected to a metal water piping system, the grounding electrode conductor shall
be connected at some point within the first ___ of where it enters the building - ✔✔5'
✔✔an equipment grounding conductor (EGC) is the conductor that is ___ - ✔✔installed
with the branch circuit conductors in a conduit or cable run
✔✔the grounding blade on an attachment plug is ___ than the current-carrying
conductor blades. This is to ensure that the grounding connection is made before the
current-carrying conductor connections and breaks its connection after the current-
carrying conductor connections (first to make last to break) - ✔✔longer
✔✔the initial cost of metal halide luminaires is ___ than that of quartz - ✔✔greater
✔✔the conductors at point III in figure 130.101 are ___. the service point is located at
the meter - ✔✔service-lateral conductors
✔✔refer to figure 130.104. circuit 13 is connected to the ___ busbar - ✔✔AØ
✔✔in amps how much current will flow in the circuit conductor connected to terminal 13
on the 1-pole breaker - ✔✔52.7
✔✔how many kw does a 100-ampere residential service draw when fully loaded -
✔✔24kw
✔✔which term best describes a service lateral - ✔✔underground feed
SOLUTIONS GRADED A+
✔✔terminations of RG-6 cable are made using __ connectors (jacks) - ✔✔F (connector)
only
✔✔Home automation controllers that utilize radio frequency (RF) ___ - ✔✔can send
signals through walls
✔✔A disconnecting means (or means of disconnect) for a swimming pool circulation
pump must be installed ___ - ✔✔at least 5' from the inside of the pool, readily
accessible, so that it is visible from the pump
✔✔When receptacles that provide power for water pump motors or other loads directly
related to the circulation and sanitation system are located 6' and 10' from inside walls
of the pool, these receptacles are required to meet which of the following conditions? -
✔✔They are of the grounding type, they have GFCI protection
✔✔what is the minimum number of 125-volt, 15- or 20-ampere convenience receptacles
that the NEC requires to be installed near a permanently installed pool locates in you
neighbors backyard - ✔✔one
✔✔a 20-amp, 120-volt duplex convenience receptacle near a pool shall be located so
that it is ___ feet or more from the inside edge of the swimming pool - ✔✔6'
✔✔Generally, safety switches and wall switches must be located at least ___ from the
inside edge of the swimming pool - ✔✔5'
✔✔When calculating residential service load, ___ is allowed for each branch circuit
serving laundry receptacles - ✔✔1,500 volt-amperes
✔✔the minimum size service disconnect for a single-family dwelling with a computed
load of kVA is ___ amperes - ✔✔60
✔✔For a 125-amp, 120/240-V, 3W residential service, ____ AWG copper THHN/THWN
conductors are the smallest permitted for the underground conductors - ✔✔2
✔✔for purposes of calculating a residential service, the general-purpose lighting load is
calculated at ___ per sq. ft. of area - ✔✔3 volt-amperes
✔✔plug fuses can be used on which of the following voltage systems? - ✔✔120/208-
volt, 1-ph, 3-wire
120/208-volt, 3ø, 4-wire
, (anything under 150- volts)
✔✔the NEC has limitations on where OCPDs, such as panelboard installations, can be
installed due to the presence of combustible materials. these are specified at ___ -
✔✔none
✔✔A breaker panel is permitted to be located ___ - ✔✔in an electrical room in a school
in a bathroom in a restaurant
✔✔the disconnect switch is fused with plug fuses and supplied from a 2-pole breaker in
space 8-10 in the 277/480-volt, 3ø, 4-wire panel. Is a code violation - ✔✔Yes
✔✔Usually, load centers are not available with "bolt-on" circuit breakers - ✔✔true
✔✔when determining the minimum size of a grounding electrode conductor, table __ is
used - ✔✔250.66
✔✔if connected to a metal water piping system, the grounding electrode conductor shall
be connected at some point within the first ___ of where it enters the building - ✔✔5'
✔✔an equipment grounding conductor (EGC) is the conductor that is ___ - ✔✔installed
with the branch circuit conductors in a conduit or cable run
✔✔the grounding blade on an attachment plug is ___ than the current-carrying
conductor blades. This is to ensure that the grounding connection is made before the
current-carrying conductor connections and breaks its connection after the current-
carrying conductor connections (first to make last to break) - ✔✔longer
✔✔the initial cost of metal halide luminaires is ___ than that of quartz - ✔✔greater
✔✔the conductors at point III in figure 130.101 are ___. the service point is located at
the meter - ✔✔service-lateral conductors
✔✔refer to figure 130.104. circuit 13 is connected to the ___ busbar - ✔✔AØ
✔✔in amps how much current will flow in the circuit conductor connected to terminal 13
on the 1-pole breaker - ✔✔52.7
✔✔how many kw does a 100-ampere residential service draw when fully loaded -
✔✔24kw
✔✔which term best describes a service lateral - ✔✔underground feed
