IEC First Year Exam 2025 Study
Questions with All Correct
Answers
When calculating the size of the required service, you should consult household electric
clothes dryer demand factors given in Table ___. - Answer-220.54
The Standard for Electrical Safety in the Workplace requires that all electrical equipment
operating at over ___ volts to ground be de-energized and locked out before anyone is
permitted to work on or near the equipment. - Answer-50
Without exceptions, all metal parts of an indoor spa or hot tub must be bonded. -
Answer-true
Article ___ of the NEC ® is the article that gives requirements for swimming pool
installations. - Answer-680
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? The pool is
located in your neighbor's backyard. - Answer-one
While installing Cat 5 cable, pulling too hard can damage the ___. - Answer-jacket,
conductor, insulation
When a portable generator provides power for frame-mounted receptacles only, the
NEC ® ___ require the frame to be connected to a grounding electrode. - Answer-does
not
Transfer switches use a ___ to prevent the feedback of electricity between the
generator power and the normal utility power. - Answer-mechanical interlock
It is permitted to run normal power conductors and optional standby power conductors
in the same raceway or enclosure. - Answer-true
when installing and audio/video/data cables, the cables run should ___ - Answer-not be
kinked, be secured with rounded or depth stop staples, be bounded loosely with other
cables
, terminations of RG-6 cable are made using __ connectors (jacks) - Answer-F
(connector) only
Home automation controllers that utilize radio frequency (RF) ___ - Answer-can send
signals through walls
A disconnecting means (or means of disconnect) for a swimming pool circulation pump
must be installed ___ - Answer-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? -
Answer-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 - Answer-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 - Answer-6'
Generally, safety switches and wall switches must be located at least ___ from the
inside edge of the swimming pool - Answer-5'
When calculating residential service load, ___ is allowed for each branch circuit serving
laundry receptacles - Answer-1,500 volt-amperes
the minimum size service disconnect for a single-family dwelling with a computed load
of kVA is ___ amperes - Answer-60
For a 125-amp, 120/240-V, 3W residential service, ____ AWG copper THHN/THWN
conductors are the smallest permitted for the underground conductors - Answer-2
for purposes of calculating a residential service, the general-purpose lighting load is
calculated at ___ per sq. ft. of area - Answer-3 volt-amperes
plug fuses can be used on which of the following voltage systems? - Answer-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 ___ -
Answer-none
Questions with All Correct
Answers
When calculating the size of the required service, you should consult household electric
clothes dryer demand factors given in Table ___. - Answer-220.54
The Standard for Electrical Safety in the Workplace requires that all electrical equipment
operating at over ___ volts to ground be de-energized and locked out before anyone is
permitted to work on or near the equipment. - Answer-50
Without exceptions, all metal parts of an indoor spa or hot tub must be bonded. -
Answer-true
Article ___ of the NEC ® is the article that gives requirements for swimming pool
installations. - Answer-680
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? The pool is
located in your neighbor's backyard. - Answer-one
While installing Cat 5 cable, pulling too hard can damage the ___. - Answer-jacket,
conductor, insulation
When a portable generator provides power for frame-mounted receptacles only, the
NEC ® ___ require the frame to be connected to a grounding electrode. - Answer-does
not
Transfer switches use a ___ to prevent the feedback of electricity between the
generator power and the normal utility power. - Answer-mechanical interlock
It is permitted to run normal power conductors and optional standby power conductors
in the same raceway or enclosure. - Answer-true
when installing and audio/video/data cables, the cables run should ___ - Answer-not be
kinked, be secured with rounded or depth stop staples, be bounded loosely with other
cables
, terminations of RG-6 cable are made using __ connectors (jacks) - Answer-F
(connector) only
Home automation controllers that utilize radio frequency (RF) ___ - Answer-can send
signals through walls
A disconnecting means (or means of disconnect) for a swimming pool circulation pump
must be installed ___ - Answer-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? -
Answer-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 - Answer-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 - Answer-6'
Generally, safety switches and wall switches must be located at least ___ from the
inside edge of the swimming pool - Answer-5'
When calculating residential service load, ___ is allowed for each branch circuit serving
laundry receptacles - Answer-1,500 volt-amperes
the minimum size service disconnect for a single-family dwelling with a computed load
of kVA is ___ amperes - Answer-60
For a 125-amp, 120/240-V, 3W residential service, ____ AWG copper THHN/THWN
conductors are the smallest permitted for the underground conductors - Answer-2
for purposes of calculating a residential service, the general-purpose lighting load is
calculated at ___ per sq. ft. of area - Answer-3 volt-amperes
plug fuses can be used on which of the following voltage systems? - Answer-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 ___ -
Answer-none
