Mike Holt Ch. 4 Study Guide

Not hard usage

HPD cord shall be permitted for ___ ___ ___.

shall

A luminaire marked "Suitable for Wet Locations" ___ be permitted to be used in a damp location.

beating rain or water runoff

A receptacle is considered to be in a location protected from the weather when located under roofed open porches, canopies, marquees, and he like, where it will no be subjected to ___ ___ ___ ___ ___.

D. all of these

Alternating-current general-use snap switches are permitted to control ___. A. resistive and inductive loads that do not exceed the ampere and voltage rating of the switch B. tungsten-filament lamp loads that do not exceed the ampere rating of the switch at 120V C. motor loads that do not exceed 80 percent of the ampere and voltage rating of the switch D. all of these

D. all of these

An attachment plug and receptacle can serve as the disconnecting means for cord-connected ___. A. room air conditioners B. household refrigerators and freezers C. drinking water coolers and beverage dispensers D. all of these

36

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.

180

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.

off

Appliances that have a unit switch with a marked-___ position that disconnects all the ungrounded conductors can serve as the appliance disconnecting means.

3

Branch-circuit conductors within ___ in. of a ballast shall have an insulation temperature rating not lower than 90 degrees Celsius (195 degrees Fahrenheit)

C. a or b

Ceiling-suspended (paddle) fans shall be supported independently of an outlet box or by a listed ___. A. outlet box or listed outlet box system identified for the use and installed in accordance with 314.27(C) B. outlet box system, a listed locking support and mounting receptacle, and a compatible factory installed attachment fitting designed for support, identified for the use and installed in accordance with 314.27(E) C. a or b D. none of these

50 degrees Celsius

Conductors located above an electric space-heated ceiling are considered to be operating in an ambient temperature of ___.

3

Conduits and raceways, including end fittings, shall not rise more than ___ in above the bottom of a switchboard enclosure.

C. a and b

Electric space-heating cables shall not be installed ___ A. in tub and shower walls B. under cabinets or similar built-ins having no clearance to the floor C. a and b D. none of these

C. a or b

Electric space-heating cables shall not be installed ___ walls. A. through B. under C. a or b D. none of these

D. All of these

Flexible cord sets and power-supply cords shall not be concealed behind building ___, or run through doorways, windows, or similar openings. A. structural ceilings B. suspended or dropped ceilings C. floors or walls D. all of these

dimmer

General-use ___ switches shall be used only to control permanently installed incandescent luminaires unless listed for control of other loads and installed correctly.

January 1, 2015

If the 15 kW or smaller portable generator was manufactured or remanufactured prior to ___, listed cord sets or devices incorporating listed GFCI protection for personnel identified for portable use shall be permitted.

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 a minimum clearance of ___ in. between the luminaire and the nearest point of a storage space.

from Tables 420.247, 420.248, 430.249, and 430.250

In determining the highest rated motor for purposes of complying with 430.24, 430.53(B), and 430.53(C), the highest rate motor shall be based on the rated full-load current as selected ___.

D. all of these

In dwelling units, all nonlocking-type 125V and 250V, 15A and 20A receptacles installed ___ shall be listed as tamper resistant. A. in business offices, corridors, waiting rooms and the like in clinics, medical and dental offices and outpatient facilities B. as a subset of assembly occupancies described in 518.2 to include places of waiting transportation, gymnasiums, skating rinks, and auditoriums C. in dormitories D. all of these

D. any of these

Insulated secondary circuit conductors of low-voltage lighting systems shall be ___ A. installed in a Chapter 3 wiring method B. supplied by a Class 2 power source and shall use Class 2 cable in accordance with Article 725 C. installed not less than 7 ft above the finished floor unless listed for a lower installation height. D. any of these

commercial

Luminaires can be installed in a commercial cooking hood if the luminaire is identified for use within a ___ cooking head.

Type O Lamp

Luminaires containing a metal halide lamp (other than a thick-glass PAR lamp) shall be provided with a containment barrier that encloses the lamp, or shall be provided with a physical means that only allows the use of a(n) ___.

in all areas specified by 210.52 and 550.13

Nonlocking type 125V and 250V, 15A and 20A receptacles installed ___ shall be listed as tamper resistant.

equipment grounding conductor

Nonmetallic boxes for switches shall be installed with a wiring method that provides or includes a(n) ___ ___ ___.

on wooden floors

Open motors having commutators or collector rings shall be located or protected so that sparks cannot reach adjacent combustible material. This shall not prohibit the installation of these motors ___.

False

Panelboard circuit directories can include labels that depend on transient conditions of occupancy.

B

Panelboards supplied by a three-phase, 4-wire, delta-connected system shall have the phase with the higher voltage-to-ground (high-leg) connected to the ___ phase.

flexible cord

Receptacles for built-in dishwashers and trash compactors shall be located to protect against physical damage to the ___.

neutral

Separately derived system generators shall have the ___ conductors sized not smaller than required to carry the maximum unbalanced current as determined by 220.61.

listed

Storage batteries, other than lead-acid batteries, and battery management equipment shall be ___.

Tables 400.5(A)(1) and (2)

The allowable ampacity of flexible cords and flexible cables is found in ___.

8

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.

full-load

The motor ___ currents listed in Tables 430.247 through 430.250 shall be used to determine the ampacity of motor circuit conductors and short-circuit and ground-fault protection devices.

starting

The motor branch-circuit short-circuit and ground-fault protective device shall be capable of carrying the ___ current of the motor.

Chapter 9, Table 1

The number of fixture wires in a single conduit or tubing shall not exceed the percentage fill specified in ___.

7

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 small copper conductors.

True

True or False: As a general rule, the grounded circuit conductor for the controlled lighting circuit shall be installed at the location where switches control lighting loads that are supplied by a grounded general-purpose branch circuit serving bathrooms, hallways, stairways, or rooms suitable for human habitation or occupancy as defined in the applicable building code.

True

True or False: In indoor locations other than dwellings and associated accessory buildings, fluorescent luminaires that utilize double-ended lamps and contain a ballast(s) that can be serviced in place shall have a disconnecting means either internal or external to each luminaire.

True

True or False: Lampholders of the screw-shell type shall be installed for use as lampholders only.

False

True or False: Low-voltage lighting systems can be concealed or extended through a building wall, floor, or ceiling without regard to the wiring method used.

True

True or False: 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.

True

True or False: Receptacles mounted to and supported by a cover shall be secured by more than one screw unless listed and identified for securing by a single screw.

True

True or False: When connected to multiwire branch circuits, the fluorescent luminaires disconnect shall simultaneously break all supply conductors of the ballast, including the grounded conductor.

True

True or False: When electric-discharge and LED luminaires that are designed not to be supported solely by the outlet box are surface mounted over a concealed outlet box, the luminaire shall provide access to the wiring within the outlet box by means of suitable openings in the back of the luminaire.

identified closures

Unused openings for circuit breakers and switches in switchboards and panelboards shall be closed using ___, or other approved means that provide protection substantially equivalent to the wall of the enclosure.

C. a or b

Wall-mounted ovens and counter-mounted cooking units shall be permitted to be ___. A. permanently connected B. cord-and-plug connected C. a or b D. none of these

branch circuit

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.

D. all of these

Which of the following switches shall indicate whether they are in the open (off) or close (on) position. A. general-use switches B. motor-circuit switches C. circuit breakers D. all of these

D. all of these

___ rated 250V or less and 60A or less, single- or 3-phase, shall be provided with GFCI protection for personnel. A. automotive vacuum machines provided for public use B. drinking water coolers C. cord-and-plug-connected high-pressure spray washing machines D. all of these