FAL
Loads for structural additions to an existing dwelling unit, which exceeds ______ square feet, shall be calculated in accordance with 220.12 and 220.14.
500
A copper-clad aluminum conductor shall be a minimum of ______ AWG.
6
The work space shall be clear and extend from the grade, floor, or platform to a height of ___________.
6 1/2 ft
Outlets for heavy-duty lampholders shall be calculated at a minimum of _____ voltamperes.
600
Live parts of electrical equipment operating at 50 volts or more shall be guarded against accidental contact by an elevation of ______ above the floor or other working surface.
8
Arc-Fault Circuit Interrupter (AFCI)
A device intended to provide protection from the effects of arc faults by recognizing characteristics unique to arcing and by functioning to de-energize the circuit when an arc fault is detected.
Bonding jumper
Bonding Jumper, System. The connection between the grounded circuit conductor and the supply-side bonding jumper, or the equipment grounding conductor, or both, at a separately derived system.
Which of the following shall be protected against overcurrent?
Conductors, other than flexible cords, flexible cables, and fixture wires, shall be protected against overcurrent in accordance with their ampacities specified in 310.15
Solidly grounded neutral systems shall be ____________.
Either single point grounded or multigrounded neutral
Equipment grounding conductors, grounding electrode conductors, and bonding jumpers shall be connected by ____________.
Either Terminal bars, or exothermic welding process
A conductor, supplied by ____________, shall be permitted to be protected by overcurrent protection provided on the primary (supply) side of the transformer.
Either the secondary side of a single-phase a transformer with a 2-wire (single-voltage) secondary or a three-phase, delta-delta connected transformer having a 3-wire (single-voltage) secondary
Aluminum or copper-clad aluminum grounding electrode conductors, used outside, shall be terminated within 18 inches of the earth.
False
An automatic cutout or switch shall be placed in the equipment grounding conductor of a premises wiring system when the opening of the cutout or switch disconnects all sources of energy
False
If an enclosed overcurrent device is installed in a system operating at a minimum of 600 volts, the restriction to 80 percent of the rating for continuous loads shall apply
False
The load on an outdoor feeder shall be determined by Part ________ of Article 220 of the NEC.
III
____________, containing circuits operating at a maximum of 50 volts, connected to ungrounded equipment shall be permitted to use a conductor with green insulation.
Power-limited Class 2 or Class 3 cables Powerlimited fire alarm cables Communications cables
An insulated grounded conductor of 6 AWG or smaller shall be identified by ___________.
a continuous white outer finish a continuous gray outer finish
An electrically conductive path from the point of a ground fault on a wiring system through normally non-current-carrying conductors to the electrical supply source is ____________.
a ground-fault current path
Which of the following circuits is not required to be grounded?
circuits for electric cranes operating over combustible fibers in Class III locations circuits in health care facilities secondary circuits of lighting systems
Article 230 of the NEC covers service conductors and equipment for ____________.
control and protection of services and their installation requirements
A grounding electrode conductor shall be made of _____________.
copper aluminum copper-clad aluminum
A bonding jumper shall be ______________
copper wire bus bar
An electronically actuated fuse is an overcurrent protective device, usually consisting of a control module that provides _____________.
current sensing and energy to initiate tripping electronically derived time-current characteristics an interrupting module that interrupts current when an overcurrent occurs
On a 4-wire, delta-connected service where the midpoint of one phase winding is grounded, the service conductor having the higher phase voltage to ground shall be marked with an orange finish at each __ point.
either termination or junction
A circuit breaker with a straight voltage rating of ___________ shall be permitted to be applied in a circuit in which the nominal voltage between any two conductors does not exceed the circuit breaker's voltage rating
either 240V or 480V
Bonding shall be provided to ensure _______.
electrical continuity and the capacity to conduct any fault current safely
All 120-volt, single phase, 15- and 20-ampere branch circuits supplying outlets installed in dwelling unit rooms or hallways shall be protected by __________ installed to provide protection of the branch circuit.
a listed combination-type, arc-fault circuit interrupter
A device intended to provide limited overcurrent protection for specific applications and utilization equipment such as luminaires and appliances is
a supplementary overcurrent protective device
fplr
fire power limited articlr 760
FPLP
fire power limited plenum
A system, supplying portable or mobile equipment over 1 kV, shall be supplied from a system having its neutral conductor _______ through an impedance.
grounded
An intersystem bonding termination is a device that provides a means for connecting a communication system bonding conductor to a ____________.
grounding electrode system
A 125-volt, single-phase, 15- or 20-ampere-rated receptacle outlet shall be installed at an accessible location for the servicing of ___________ equipment.
heating air-conditioning refrigeration
A grounding electrode conductor tap shall extend to the ____________ of each service disconnecting means enclosure.
inside
Suitability of equipment may be evidenced by
listing or labeling
Service-entrance cables shall be supported by straps within 12 inches of every _______ and at intervals not exceeding 30 inches.
service head gooseneck connection to a raceway or enclosure
A high-impedance grounded neutral system, with a grounding impedance, usually a resistor, limits the groundfault current to a low value ___________ permitted for a 3-phase ac system of 480 volts to 1000 volts under certain conditions.
shall be
A grounding electrode ___________ required where a single branch circuit supplies a building and the branch circuit includes an equipment grounding conductor for grounding the normally non-current-carrying metal parts of equipment.
shall not be
A multiple fuse is an assembly of two or more _________-pole fuses.
single
A tap conductor, with a maximum length of ______ feet shall comply with which of the folllowing?
the ampacity of the tap conductors is a minimum of one-third of the rating of the overcurrent device protecting the feeder conductors the tap conductors terminate in a single circuit breaker or a single set of fuses that limit the load to the ampacity of the tap conductors the tap conductors are protected from physical damage by being enclosed in an approved raceway or by other approved means
A metal water piping system, installed in or attached to a building, shall be bonded to ____________.
the service equipment enclosure the grounded conductor at the service the grounding electrode conductor, if sufficient
A pressure connector is a device that establishes a connection between ________ by means of mechanical pressure and without the use of solder.
two or more conductors one or more conductors and a terminal
Each doorway leading into a vault from the building interior shall have a tight-fitting door that has a minimum fire rating of __________ hours.
3
The type 3 SPD connection shall be a minimum ___ feet of conductor distance from the service or separately derived system disconnect.
30
300-volt cartridge fuses and fuseholders shall be permitted to be used in circuits with a maximum of ____ volts between conductors.
300
An open conductor shall be separated from an open conductor of another circuit or system by a minimum of __________ inches.
4
If a branch cfircuit supplies continuous loads the rating of the overcurrent device shall be a minimum of the noncontinuous load plus _____ percent of the continuous load.
125
Plug fuses of the Edison-base type shall be classified at a maximum of _______ volts and 30 amperes and below.
125
Open land for conductors and live parts up to 22 kV, nominal, to ground shall be a minimum of _______ feet.
13.5
Line and grounding conductors shall be a minimum of ______ AWG copper or 12 AWG aluminum.
14
The connection, for an ungrounded system, shall be made by bonding the equipment grounding conductor to the grounding electrode conductor
True
___________ lengths of busway shall be permitted to extend through dry walls.
Unbroken
In an area listed in the 12 foot classification, where voltage exceeds 300 volts to ground, an overhead span of open conductors, under 600 nominal volts, shall have a minimum clearance of _________ feet.
15
Groundfault protection of equipment shall be provided for solidly grounded wye electric services over ______ volts to ground.
150
Receptacle outlets shall be located on or a maximum of _______ inches above, a countertop.
20
GFCI protection shall be provided for outlets not exceeding _______ volts that supply boat hoists installed in dwelling unit locations.
240
Round access openings in a manhole shall be a minimum of __________ inches in diameter.
26
Calculations shall be permitted to be rounded to the nearest whole ampere, with decimal fractions smaller than ______ dropped.
0.5
If no additional air-conditioning equipment will be installed, the first 8 kVA of load will be calculated __________ percent of the load.
100
The equipment grounding conductor for a secondary circuit of an instrument transformer shall be a minimum of ________ AWG copper or 10 AWG aluminum
12
When determing receptacle outlet requirements, if a sink is installed in an island, with a maximum _______ inch depth of countertop behind the sink, the countertop space is considered to be two separate countertop spaces.
12
A multiwire branch circuit shall supply only line-toneutral loads.
True
The calculation of a feeder load for existing installations shall use the actual _________ demand to determine the existing load when the ______ demand data is available for a 1-year period.
neither minimum or maximum
According to the definition in the 2011 National Electrical, performing a function which requires human intervention is considered to be ___________.
nonautomatic
The maximum unbalanced load shall be the maximum net calculated load between the neutral conductor and any _____ ungrounded conductor(s).
one
Instrument transformers shall be tested to verify the correct __________.
polarity burden
Overcurrent protection shall be
provided in each ungrounded circuit conductor and located at the point where the conductors receive their supply
All tap connections to the common grounding electrode conductor shall be made at an accessible location _____________________.
using a connector listed as grounding and bonding equipment using listed connections to aluminum or copper busbars not smaller than 6 mm × 50 mm using an exothermic welding process
The identification of terminals to which a grounded conductor is to be connected shall be substantially ___________ in color.
white