NEC At SUNY CANTON

Lakukan tugas rumah & ujian kamu dengan baik sekarang menggunakan Quizwiz!

The edge of a hole bored through wood framing to support NM cable must be a minimum of _____________ inches to either face of that board.

1 1/4

Service-entrance cable shall be supported by straps or other approved means within ____________ of every service head, gooseneck, or connection to a raceway or enclosure.

1 foot.

A metal plate use to protect cable installed through bored holes must at least ________________" thick, unless otherwise listed for the use.

1/6

Overhead conductors to a building shall maintain a vertical clearnae of _____________ feet above platforms.

10

The point of attachment of the service-drop conductors to a building must not be less than ________ ft above finish grade.

10

Overhead service conductors, accessible only to pedestrian traffic, must have a minimum ______ft vertical clearance above finished grade.

10 ft

Service-drop conductors shall have a vertical clearance of not less than __________ ft above the roof surface.

10 ft.

For a one family dwelling, the service disconnecting means shall have a rating of not less than _________ amperes.

100

A one-family dwelling service disconnecting means must have a minimum rating of ___________.

100 amperes, 2-wire

Entrance cable must be supported within_____ in.of every raceway or enclosure connection.

12 in.

GFCI protection is required for every ______ receptacle located in the bathroom area.

120 - volt, single - phase 15 and 20 ampere

A ______________ rated receptacle outlet shall be installed at an accessible location for the servicing of equipment within a crawl space.

120- volt, single - phase, 15 - or 20 - ampere

A _____ receptacle out shall be installed at an accessible location for the servicing of heating, air-conditioning, and refrigeration equipment.

120-volt, single-phase, 15- or 20- ample rated

The minimum clearance above the roof for 120/240 - volt service conductors terminating at a through - the roof raceway when less than 6 feet of the conductors pass over the room overhang is_______________.

18 jnches

Branch circuits in kitchens should be ____________ -ampere circuits.

20

_________ receptacles are identified by the letters "TR."

Tamper - resistant

________determines the minimum number of receptacles in a given dwelling.

Wall space

______________ should be connected with flexible metal conduit or MC cable.

Water heaters.

Heating and air-conditioning systems

________ are not included in calculating receptacle loads.

Small-applienace branch circuits

__________ must be included when calculating a dwelling unit service.

Open porches

______________are not included in the calculated floor area of dwelling units.

The location of circuit breakers

______________is not an important piece of information to gather before performing load calculations.

Cables entering or exiting conduit used for support or protection against physical damage require fittings on the conduit ends prevent ___________________.

cable abrasion

A bushing ____ be used instead of a box where conductors merge from a raceway and enter or terminate at equipment, such as open switchboards, unenclosed control equipment, or similar equipment.

can

Outdoor luminaires _________.

can be supported by trees.

Cable connector(s) with a _______ outside the box are not counted when determining the number of conductors.

clamping mechanism

A grounding electrode is a (n) ___ object that establishes a direct connection earth.

conducting

A load having the maximum level of current sustained for three hours or more is referred to as a ___________ load.

continuous

Electrical installation openings that ;penetrate into or through fire - resistant - rated structures must be ____________.

fire stopped

Service conductors are the conductor from the service point to the ________________.

first point of connection

Underground service conductors are defined as the underground conductors between the service point and the _____ to the service-entrance conductors in a terminal box.

first point of connection

A(n) __________ is an accessory, such as a locknut or bushing, whose function is primarily mechanical, rather than electrical, in nature.

fitting

The maximum number of conductors applies only if the box, does not contain any _______________.

fitting or devices

The radius of the curve of the inner edge of any bend in service-entrance cable must be at least_________ times the diameter of the cable.

five

Boxes using a flush type faceplate or cover in walls constructed of combustible materials shall be installed so that the front edge the box:

flush or even with finish surface.

Receptacles, unless listed as receptacle assemblies for countertop applications, shall not be installed ____________ in countertops or similar work surfaces.

in a face-Up position

Balconies or porches that are accessible to the inside of a dwelling unit shall have ______ properly placed receptacle outlets(s).

no less than 1

Each laundry branch circuit is calculated at _____________

no less than 1500 volt-amperes

The bathtub zone refers to the area in which __________.

no parts of cord-connected luminaires, and ceiling - suspended (paddle) fans are permitted.

The smaller of two (or more)______ loads can be omitted, as long as they are never energized simultaneously.

noncoincident

Service raceways shall be equipped with a ____________ service head at the point of connection to service - drop conductors.

rain tight, watertight, waterproof

Panel boards shall be minted in cabinets, clout boxes, or identified enclosures and shall be __________.

ready accessible.

NM cable must be supported at intervals not exceeding _______________ feet.

4 1/2

Nonmetallic - sheathed cable has a minimum bending radius of ___________ times the cable diameter.

5

A luminaire that weighs more than ___________ pounds shall be supported independently of the outlet box, unless the outlet box is listed and marked for the maximum weight to be supported.

50

The exact nameplate rating of the clothes dryer, even if less than ______ volt-amperes should be used in load calculations.

5000

At least ________ inches of free conductors shall be left at each outlet, junction, and switch point.

6

Type MC cable must be supported and secured at intervals not exceeding ___________ feet.

6

The minimum height of working space fro equipment operating at 600 volts, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized shall be ___________ ft or the height of the equipment, whichever is greater.

6 !/2 ft

A receptacle outlet installed for a specific appliance, such as laundry equipment, shall be installed within ________ of the intended location of the appliance.

6 ft

All switches shall be located so that they may be operated from a readily accessible place, not more that ___________ from the floor to the center of the switch operating handle.

6 ft, 7in.

Other equipment associated with the electrical installation located above or blow the electrical installation shall be permitted to extend no more than ________ beyond the front of the electrical equipment.

6 in.

The standard ampere rating for fuses and fixed-trip circuit breakers are listed in Article 240: additional standard ratings for fuses shall be ___________ amperes(s).

6, 10, 601, all of these

Outlet boxes of outlet box systems used as the sole support of a ceiling-suspended fan shall not support ceiling suspended ([paddle) fans that weigh more than _________ pounds.

70

A demand factor of __________% can be applied to the nameplate rating load of four or more fastened-in-place appliances.

75

Which of the following is not a standard ampere rating for fuses?

75 amperes

Conductors must have a vertical clearance of at least ____ft above the roof surface.

8

Service drops run over roofs shall have a minimum clearance of ______ feet.

8

The minimum size underground service-lateral concoctor shall not be smaller than __________AWG copper and __________ AWG aluminium.

8,6

two

A dwelling unit must have at least _____small-appliance brach circuits(s).

An ______________ is the organization, office, of individual responsible for enforcing the requirements of a code.

AHJ (authority having jurisdiction)

___________ luminaire type are not permitted in a clothes closet.

Pendant luminaires or lampholders

Laundry receptacle outlet(s) must be fed from a ____________ branch circuit.

20 - ampre

The depth of clothes closet storage space below a hanging rod is ___________ inches wide.

24

At least one receptacle must be located within _________ feet of the outside edge of bathroom sink.

3

Final spans of feeders or branch circuits to the building they supply shall ben not less than _________ feet from doors, porches, balconies, ladders, stairs, fire escapes, windows that are designed to be opened, and similar locations.

3

The minimum depth of working space fro a 120/240-volt panel board, with exposed live parts on one side and grounded parts on the other, shall be at least __________________ ft.

3

The bathtub zone measures _____________ from the top of the bathtub rim or shower stall threshold and includes the space directly over the tub.

3 ft horizontally and 8 ft. vertically

Service conductors run above the top level of a window shall be:

3 ft. above the window

The width of the working space in front of the electric equipment shall be the width of the equipment or _____________ in., whichever is greater.

30

All receptacle installed to serve kitchen counter top surfaces shall have ___________.

GFCI protection

size of services and feeder

Load calculations must be performed in order to determine the________________________.

total volt -amperes

The _________ of equipment is necessary information for calculating loads.

floor area

The ____________for each floor shall be computed using the outside dimensions.

3

The lighting load for residential dwelling units is _______________ volt-amperes (VA per square foot.)

________ in exterior walls are not counted as wall space.

The movable panels of a sliding window

The requirement for maintaining a 3 - foot vertical clearance from the edge of a roof shall not apply to the final conductor span where the service drop is attached to ____________.

a service pole, an antenna

An outdoor receptacle, in a location protected from the weather or in other damp locations, requires ________when the receptacle is covered.

an enclosure for the recptacle that is weatherproof

A clothes dryer outlet must have _________ and an equipment grounding conductor.

an insulated grounded (neutral) conductor

A branch circuit providing power to bathroom receptacle shall not provide power to ___________.

any receptacle or lighting outside of bathrooms.

A detached garage with electrical power must have _________

at least one wall switch - controlled lighting outlet

Protection is required for cable located within 6 ft (measured both vertically and horizontally )of the ___________.

attic entrance

Service disconnecting means shall not be installed in ________.

bathrooms

To prevent water from entering service equipment, service entrance conductors must __________________.

be connected to service-drop conductors below the level of the service head, have drip loops formed on the service-entrance conductors.

A duplex receptacle outlet on an existing two wire circuit may ___________.

be replaced by a GFCI device.

Wire connectors, pigtails, locknuts, bushing, raceway connectors, grounding screws, and equipment bonding jumpers are not factors when calculating _______________.

box fill

Main bonding jumpers and stem bonding jumpers must be made of ________ or other corrosion-resistant material.

copper.

A(n) ____________is permitted on a small - appliance branch circuit.

dedicated clock outlet

A scale ruler is used in_________________

determining the location of outlets.

A multiwire circuit must consist of conductors connected to ________________

different phases

Service head and ___________ in service-entrance shall be located above the point of attachment of the service-drop or overhead service conductors to the building or other structure.

drip loops

No derating is allowed when there are only one, two,or three__________ appliances.

fastened-in-place

All switchboards, switchgear,panelboards,distribution boards, and motor control centers must be located______ and must be protected from damage.

in dedicated spaces.

A least one wall switch - controlled lighting outlet is required to provide illumination on the ____________.

interior side of an outside entrance exit with graded - level access.

GFCI protection is required for receptacles installed to serve ___________________.

kitchen countertops

The __________ is the connection between the grounded circuit conductor and the equipment grounding conductor at the service

main upper bonding

Electrical blueprints (floor plans) ________ on a small one-family dwelling.

may be optional

The most common wiring type installed in one-family dwellings is ____________.

nonmetallic - sheathed cable.

Wiring components are considered accessible if ______________.

not permanently closed in by the structure or finsihe of the building.

A service disconnecting means shall plainly indicate whether it is in the ___________ position.

on or off

At least _________ wall switch-controlled lighting outlet shall be installed in every habitable room of a dwelling.

one

Equipment grounding conductor(s) or equipment bonding jumpers entering a box count as _________________.

one conductor

One - family dwellings require at least _________ installed at the front and back of the dwelling.

one recital outlet

A point in a wiring system from which current is taken to supply utilization eqyuonebt us jibe as a(n)______________.

outlet

A key provision found in most of the cable articles states that the cable must not be installed where subject to _________.

physical damage

Where the service disconnecting means is power - operated circuit breaker, it shall be able to be opened by hand in the event of a ___________________.

power supply failure

Laundry equipment receptacles ________________.

require GFCI protection

Attic spaces used for storage or containing equipment that may require servicing __________________.

require one lighting outlet

A wall space between two closet doors of 24 inches or greater______________.

requires GFCI protection

The bonding jumper for a service raceway must be sized according to the ______________.

service - entrance conductor size

The service point is the point of the connection between the facilities of the ________ and the premises wiring.

serving utilities

Accessory building that are provided with electrical power ___________________.

shall have at least one GFCI protected receptacle outlet

A small appliance brach circuit _____________- supply a lighting circuit for the dining area.

shall never

Interior stairways of _______ or more risers (steps) shall have a wall switch located at each floor level and landing level that includes and entryway.

six

Required branch circuits include _______ circuits.

small appliance, laundry, and bathroom

Although not stipulated in the NEC, some local jurisdictions have adopted _____for service conductors.

specific distance requirements.

A receptacle floor box must be ______ for the types of floor installation.

specifically listed

Service - drop connectors shall have _____________.

sufficient ampacity to carry the current for the load, adequate mechanical strenght

A disconnecting means is not required for appliances installed in a basement if ___________________.

the branch - circuit switch or circuit breaker is within 50 ft and can b seen while working on the appliance.

An attachment plug establishes connection between___________.

the conductors of the attached flexible cord and the conductors permanently connected to the receptacle.

All conductors of a multi wire branch circuit must originate form

the same panel board.

The term appliance designates __________ and installed as a unit to perform specific functions(s.)

utilization equipment commonly built in standardized types and sizes.

Total volt-ampere load for heating or air-conditioning systems is calculated as the largest ___________.

volt-ampere load after application of all demand factors.

Horsepower ratings must be converted to ______ before they can be added to the load calculation form.

volt-amperes (VA)

Multiplying voltage by amperage produces _____________________.

volt-amperes (VA)

Service-entrance and overhead service conductors shall be arranged so that __________.

water shall not enter the service raceway or equipment


Set pelajaran terkait

152 Questions to Summarize* AP Human Geo Unit 2: Population and Migration

View Set

Blood Gas Electrodes and Quality Assurance Ch 4 RES 121

View Set

CST REVIEW: AST Practice Exams 1-6

View Set

Populations virtual sim quizzes (modules 1, 6, 5)

View Set

Industry and Agriculture 5:Nationalism and Sectionalism Part 2

View Set