NEC2017 Practice Deck 1 Flashcards

(30 cards)

1
Q

Type CL3P is NOT permitted to be used _______.

A

in direct underground burial applications

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2
Q

An antenna discharge unit is not required for lead-in conductors where _______.

A

they are enclosed in a continuous metallic shield that is grounded

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3
Q

The largest size conductor permitted within a concrete cellular floor raceway is _______.

A

1/0 AWG

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4
Q

Omitting exceptions, the work space in front of a panelboard shall be clear and extend from the floor to a height of at least _______.

A

6.5 feet

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5
Q

Omitting exceptions, which of the following materials is NOT permitted to be run vertically within ducts specifically fabricated to transport environmental air?

A

FMC

NM-B***

NEEDS VERIFICATION

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6
Q

All Type FCC cable connections shall use connectors identified for _______.

A

sealing against dampness and liquid spillage

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7
Q

Excluding exceptions, network-powered broadband communications cables attached to a structure and located within _______ of finished grade shall be protected by enclosures.

A

8 ft

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8
Q

If new products, not yet available at the time when the Code was adopted, are made available, who may permit the use of these products?

A

Authority having jurisdiction.

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9
Q

The first isolated circuit conductor that is provided for in a health care facility is the color _______.

A

orange

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10
Q

The minimum size copper equipment grounding conductor that is used for a 100 ampere rated disconnect is a/an _______.

A

8 AWG

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11
Q

Which of these is not required to be shown on a control drawing?

A

Simple apparatus

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12
Q

An alarm panel board with a voltage of 50 volts to ground is installed. The minimum depth of the working space is ________.

A

3 ft

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13
Q

Electrical systems that are grounded shall be connected to earth in a manner that will provide for all of the following EXCEPT?

A

Unlimit the voltage imposed by intentional contact with higher-voltage lines.

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14
Q

Where nonmetallic-sheathed cables pass through a factory drilled hole in metal members, the cable shall be protected by _______.

A

listed bushings

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15
Q

Where installing Type IMC in Class 1 locations, factory threaded NPT entries shall be up of at least _______ threads fully engaged.

A

five

four and one-half

***NEEDS VERIVICATION

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16
Q

In Class I, Division 1 locations, a conduit seal shall be installed within _______ from an enclosure.

17
Q

Where nipples having a maximum length not to exceed 24 in. are installed between boxes, the nipples shall be permitted to be filled to _______ of their total cross-sectional area.

18
Q

A transformer supplies a Class 2 circuit. It’s input leads are 16 AWG. What is the maximum length of the input leads?

19
Q

Nonmetallic auxiliary gutters shall be supported at intervals not to exceed _______ and at each end or joint.

20
Q

The minimum depth that a 6 inch rigid conduit may be placed under the tarmac of an airport is _______.

21
Q

Four lead-in conductors are used for an outdoor antenna. How many antenna discharge units are required?

22
Q

Underground service conductors are buried at least 18 in. below grade. These conductors shall have their location identified by a warning ribbon that is placed in the trench at least _______ above the underground installation.

23
Q

Fuel dispensing systems shall be provided with at least one clearly identified emergency shutoff device. This device is to be installed in approved locations not less than _______ from the fuel dispensing devices that they serve.

A

20 ft or more than 100 ft

24
Q

Which of the following IS considered to be safety-control equipment that is used in conjunction with electrically controlled household heating and air conditioning?

A

Room thermostat.

ALL LISTED are NOT considered safety-control equipment

***NEEDS VERIFICATION

25
Where subjected to direct burial, with severe corrosive influences, which of the following raceways is NOT permitted to be used?
EMT.
26
The maximum ampacity of a current-carrying three-conductor 15 AWG copper Type ETP flexible cord is _______.
12 amperes
27
The use of metal wireways are not permitted within _______.
an area where subject to severe corrosive environments
28
For other than certain motors, the temperature provisions of equipment for an 8 AWG copper conductor shall be _______.
140 degrees F.
29
For receiving stations, the copper-clad steel bonding conductor shall not be smaller than a/an _______.
6 AWG 17AWG ***NEEDS VERIFICATION
30
The combined cross-sectional area of all conductors within an underfloor raceway shall not exceed _______ of the interior cross-sectional area of the raceway.
40 percent