3A First Quarter
Luminaires installed in Class I, Division 2 locations shall be protected from physical damage by a suitable _____.
guard or by location
Single-pole breakers with identified ____ can be used to protect each ungrounded conductor for line-to-line connected loads.
handle ties
Lampholders of the screw-shell type shall be installed for use as _____only.
lampholders
Luminaires installed above new outdoor pools or the area extending _____ ft horizontally from the inside walls of the pool shall be installed at a height not less than 12 ft above the maximum water level of the pool.
10
Ground-fault protection of equipment shall be provided for solidly grounded wye electrical systems of more than 150 volts-to-ground, but not exceeding 1,000V phase-to-phase for each individual device used as a building or structure main disconnecting means rated _____ or more, unless specifically exempted.
1000 A
Underground service conductors that supply power to limited loads of a single branch circuit shall not be smaller than _____.
12 AWG copper
GFCI protection is required for 15A, 20A, and 30A, 125V and 125V/250V receptacles that are part of a portable generator used for temporary wiring rated not greater than _____.
15 kW
For installations consisting of not more than two 2 wire branch circuits, the building disconnecting means shall have a rating of not less than _____.
30 A
An in-sink waste disposer can be cord-and-plug-connected, but the cord shall not be less than 18 in. or more than _____ in. in length.
36
Permanently installed swimming pools include those constructed in the ground or partially in the ground, and all others capable of holding water in a depth greater than _____ in.
42
A demand factor of _____ percent applies to a multifamily dwelling with ten units if the optional calculation method is used.
43
Where fixed multioutlet assemblies are used in other than dwelling units or the guest rooms of hotels or motels, each _____ ft or fraction thereof of each separate and continuous length shall be considered as one outlet of not less than 180 VA where appliances are unlikely to be used simultaneously.
5
The minimum clearance between the heating elements of electric space-heating cables installed in ceilings and outlet boxes and junction boxes used for mounting surface luminaires shall not be less than _____ in.
8
Surge arrestors 1,000V or less are also known as ____ surge protective devices (SPDs).
Type 1
The continuity of a grounded conductor shall not depend on a connection to _____.
a metallic enclosure, a raceway, or cable armor
An optical fiber cable, with or without current-carrying conductors shall be installed to address the associated ____ hazard and sealed to address the associated explosion hazard in accordance with Articles 500, 501, 502, or 503.
fire
The sealing fitting or listed explosionproof reducer at the seal for motor fuel dispensers shall be the _____ fitting after the conduit emerges from the earth or concrete.
first
At Type AC cable terminations, a(n) _____ shall be provided.
fitting that protects the conductors from abrasion AND insulating bushing between the conductors and the cable armor
A(n) _____ shall be located at the point of entry to an elevator machine room.
lighting switch
Storage batteries, other than lead-acid batteries, and battery management equipment shall be _____.
listed
When installed for swimming pools, grounding and bonding terminals shall be _____ for direct burial use.
listed
Where fuses are used as the service overcurrent device, the disconnecting means shall be located ahead of the ____ of the fuses in accordance with 230.91.
load side
HPD cord shall be permitted for _____.
not hard usage
Short sections of raceways used for _____ shall not be required to be installed complete between outlet, junction, or splicing points.
protection of cables from physical damage
In industrial facilities where conditions of maintenance and supervision ensure that only qualified persons will service the installation, cable tray systems can be used to support _____.
raceways, cables, and boxes/conduit bodies
120V, single phase, 15A and 20A branch circuits supplying outlets and devices installed in guest _____ of hotels and motels shall be protected by any of the means described in 210.12(A)(1) through (6).
rooms AND suites
Service-drop conductors shall have _____.
sufficient ampacity to carry the load AND adequate mechanical strength
If a set of 120/240V overhead feeder conductors terminates at a through-the-roof raceway or approved support, with not more than 6 ft of these conductors, 4 ft horizontally, passing over the roof overhang, the minimum clearance above the roof for these conductors is not less than _____.
18 in.
Any combustible ceiling finish that is exposed between the edge of a ceiling-suspended (paddle) fan canopy or pan and an outlet box and that has a surface area of _____ sq in. or more shall be covered with noncombustible material.
180
Conduits and raceways, including end fittings, shall not rise more than _____ in. above the bottom of a switchboard enclosure.
3
An insulated grounded conductor _____ AWG or smaller shall be identified by a continuous white or gray outer finish, or by three continuous white or gray stripes along its entire length on other than green insulation.
6
In clothes closets, recessed incandescent or LED luminaires with a completely enclosed light source can be installed in the wall or the ceiling, provided there is a minimum clearance of _____ in. between the luminaire and the nearest point of a storage space.
6
Type AC cable installed in thermal insulation shall have conductors that are rated at 90ºC. The ampacity of the cable in this application shall not exceed that of a _____ rated conductor.
60ºC
Torque requirements for motor control circuit device terminals shall be a minimum of _____ lb-in. (unless otherwise identified) for screw-type pressure terminals used for 14 AWG and smaller copper conductors.
7
To determine the feeder calculated load for ten 3 kW household cooking appliances, use _____ of Table 220.55.
Column A
Branch circuits installed in corrosive environments for pool-associated motors shall be installed in wiring methods including _____ conduit when installed in a corrosive environment. Any wiring method employed shall include an insulated copper equipment grounding conductor sized in accordance with Table 250.122, but not smaller than 12 AWG.
PVC OR rigid metal
The service or feeder ratings addressed by 310.15(B)(7) are based on the standard ____ ratings from 240.6(A).
ampacity
Outside feeder tap conductors can be of unlimited length without overcurrent protection at the point they receive their supply if the tap conductors _____.
are suitably protected from physical damage AND terminate at a single circuit breaker
FMC shall be supported and secured _____.
at intervals not exceeding 4 1/2 ft
Electric vehicle supply equipment includes the conductors and electric vehicle connectors, _____ installed specifically for the purpose of transferring energy between the premises wiring and the electric vehicle.
attachment plugs, fittings, and power outlets
For the purposes of 210.71, examples of rooms that are not meeting rooms include _____.
auditoriums, schoolrooms, and coffee shops
In Class III locations, flexible cords shall _____.
be listed as extra-hard usage
Vegetation shall not be used to support overhead conductor spans of _____ for temporary installations.
branch circuits OR feeders
_____ for fuel dispensing systems shall disconnect power to all dispensing devices; to all remote pumps serving the dispensing devices; to all associated power, control, and signal circuits; and to all other electrical equipment in the hazardous (classified) locations surrounding the fuel dispensing devices.
emergency shutoff devices OR electrical disconnects
Surge protective devices shall be marked with a short circuit current rating and shall not be installed where the available fault current is in ____ of that rating.
excess
Which of the following switches shall indicate whether they are in the open (off) or closed (on) position?
general-use switches, motor-circuit switches, and circuit breakers
On a three-phase, 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 durably and permanently marked by an outer finish that is _____ in color, or by other effective means, at each termination or junction point.
orange
Additional services shall be permitted for a single building or other structure sufficiently large to make two or more services necessary if permitted by _____.
special permission
Nongrounding, nonlocking-type, 15A and 20A, 125V and 250V receptacles used for replacements in a dwelling unit shall not be required to be listed as ____.
tamper resistant
A three-phase, 4-wire, _____ power system used to supply power to nonlinear loads may necessitate that the power system design allow for the possibility of high harmonic currents on the neutral conductor.
wye-connected
Underground wiring shall not be permitted under a pool unless this wiring is necessary to supply pool equipment permitted by Article 680, and the _____ cover depths shall be as given in Table 300.5.
minimum
The maximum number of conductors permitted in any surface metal raceway shall be _____.
no greater than the number for which it was designed
The disconnecting means for an elevator or escalator shall be an enclosed externally operable circuit breaker or fused motor circuit switch that is _____.
lockable
In Class I, Division 1 or Division 2 locations where the boxes, fittings, or enclosures are required to be explosionproof, if a flexible cord is used it shall terminate with a cord connector or attachment plug listed for the location, or a listed cord connector installed with a seal that is listed for the location. In Division 2 locations where explosionproof equipment is not required, the cord shall terminate _____.
with a listed conductor OR with a listed attachment plug
For other than dwelling occupancies, banks, or office buildings, each receptacle outlet shall be calculated at not less than _____ VA.
180
In commercial garages, where Type PVC conduit, Type RTRC conduit, or Type HDPE conduit is used underground, threaded rigid metal conduit or threaded steel intermediate metal conduit shall be used for the last _____ ft of the underground run to emergence or to the point of connection to the aboveground raceway, and an equipment grounding conductor shall be included to provide electrical continuity of the raceway system and for grounding of noncurrent-carrying metal parts.
2
Mobile home service equipment shall be located adjacent to the mobile home, located in sight from but not more than _____ ft from the exterior wall of the mobile home it serves.
30
If cables meeting the requirements in 310.15(B)(3)(4)a through c with more than 20 current-carrying conductors are installed longer than 24 in. without maintaining spacing, are stacked, or are supported on bridle rings, a _____ percent adjustment factor shall be applied.
60
A pool transformer used for the supply of underwater luminaires, together with the transformer enclosure, shall be listed, labeled, and identified for swimming pool and spa use and _____ between the primary and secondary windings.
be of the isolated-winding type with an ungrounded secondary and a grounded metal barrier
Where attachment to an equipment grounding conductor does not exist in the receptacle enclosure, a non-grounding-type receptacle shall be permitted to be replaced with a GFCI-type receptacle; however, some equipment or appliance manufacturers require that the _____ to the equipment or appliance includes an equipment grounding conductor.
branch circuit
In walls constructed of wood or other _____ material, electrical cabinets shall be flush with the finished surface or project therefrom.
combustible
Overcurrent devices are not permitted to be located in the bathrooms of _____.
dwelling units, dormitories, or guest rooms or suites of hotels
ENT is composed of a material resistant to moisture and chemical atmospheres, and is _____.
flame retardant
When necessary to employ ____ connections in a Class I, Division 1 location, such as at motor terminals, flexible fittings listed for the location or flexible cord in accordance with 501.140, are permitted if terminated with cord connectors listed for the location.
flexible
When sizing a feeder for the fixed appliance loads in dwelling units, a demand factor of 75 percent of the total nameplate ratings can be applied if there are _____ or more appliances fastened in place on the same feeder.
four
Horizontal runs of RMC supported by openings through _____ at intervals not exceeding 10 ft and securely fastened within 3 ft of termination points shall be permitted.
framing members
In determining the highest rated motor for purposes of complying with 430.24, 430.53(B), and 430.53(C), the highest rated motor shall be based on the rated full-load current as selected _____.
from 430 Tables
Where it is unlikely that two or more noncoincident loads will be in use simultaneously, only the _____ the loads used at one time is required to be used in computing the total load to a feeder.
largest of
The overcurrent protective devices that supply marinas, boatyards, and commercial and noncommercial docking facilities shall have ground-fault protection not exceeding _____.
30 mA
