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IRC ELECTRICAL > Chapter 34 > Flashcards

Chapter 34 Flashcards

1
Q

Chapters 34 through 43 cover those wiring methods and materials encountered in the construction of ___dwellings and structures regulated by this code.

A

one and two

E 3401.1 Applications

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2
Q

Services within the scope of this code shall be limited to __ volt, ___ ampere, single phase systems.

A

120/240, 400

E 3401.2 Scope

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3
Q

Electrical installations in hollow spaces, vertical shafts and ventilation or air-handling ducts shall be made so that the possible spread of fire or products of combustion will not be substantially ___.Electrical penetration into or through fir-resistance-rated walls, partitions, floors and ceilings shall be protected by ___methods to maintain the fire-resistance rating of the element penetrated.

A

increased, approved

E 3402.2 Penetrations of fire-resistance-rated assemblies.

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4
Q

Electrical materials, components and equipment shall be___.

A

approved.

E 3403.1 Approval

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5
Q

New electrical work and parts of existing systems affected by new work or alterations shall be ___by the building official to ensure compliance with the requirements of Chapters 34 through 43.

A

inspected

3403.2 Inspection required.

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6
Q

Electrical materials, components, and equipment shall be ___.

A

Approved

E 3403.1 Approval

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7
Q

New electrical work parts of existing systems affected by new work or alternations shall be ___by the building official to ensure compliance with the requirements of Chapter 34 through 43.

A

inspected

E3403.2 inspection required.

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8
Q

Electrical materials, components, devices, Fixtures and equipment shall be __ for the application, shall ___ the label of an approved agency and shall be installed, and used or both , in accordance with the manufacture’s installation instructions.

A

listed; bear

E 3403.3 Listing and labeling.

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9
Q

Equipment intended to interrupter current at fault level shall have a minimum interrupting rating of ___amperes.

A

10,000 amperes

E 3404.2 interrupting rating

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10
Q

The overcurrent protective devices,total impedance, equipment short-circuit current ratings and other characteristics of the circuit to be protected shall be so selected and coordinated as to permit the circuit protective device that are used to clear a fault to do so without ___ to the electrical equipment of the circuit.

A

extensive damage

E 3404.3 Circuit characteristics

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11
Q

Enclosures, other than surrounding fences or walls, of panelboards, meter sockets, enclosed switches,transfer switches, circuit breakers, pullout switches, and motor controllers, rated not over 600 volts nominal and intended for such locations, shall be ___with an enclosure-type number as shown in Table E 3404.4

A

marked

E 3404.4

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12
Q

The enclosure are not intended to protect against conditions such as condensation, icing, corrosion, or contamination that might occur within the enclosure or enter through the conduit or ___.

A

unsealed openings.

E 3404.4

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13
Q

Equipment identified only indoor use, shall be protected against weather damage during ___.

A

construction period

E 3404.5 Protection of equipment

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14
Q

unused equipment shall be closed to afford protection substantially ___ to the wall of the equipment.
Where metallic plug or plate are used with nonmetallic enclosure, they shall be recessed at least ___ inches from the outer surface of the enclosure.

A

equivalent; 1/4 inch

E unused openings

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15
Q

Internal parts of electrical equipment, including busbars, wiring terminals, insulators and other surfaces, shall not be ___or ___by foreign materials such as paint, plaster, cleaners and abrasives or corrosive residues.There shall not be any damaged parts that might adversely affect safe operation or mechanical strength of the equipment such as parts that are broken; bent; cut; deteriorated by corrosion, chemical action, or overheating. Foreign debris shall be removed from equipment.

A

damaged contaminated

E 3404.7 Integrity of electrical equipment

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16
Q

Electrical equipment shall be firmly secured to the surface on which it is mounted. ___driven into masonry, concrete, plaster, or similar materials shall not be used.

A

wooden plug

E 3404.8 Mounting

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17
Q

Approved enclosures shall guard energized parts that are operating at ___ volts or more against accidental contact.

A

50 volts

E 3404.9 Energized parts guard against accidental contact

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18
Q

In locations where electrical equipment is likely to be exposed to physical damage, enclosure or guards shall be so arranged and of such strength as to ___such damage.

A

prevent

E 3404.10 Prevent physical damage

19
Q

The manufacture’s name, trademark or other descriptive marking by which the organization responsible for the product can be identified shall be ___ on all electric equipment. Other marking shall be ___ that indicate voltage, current, wattage or other ratings as specified elsewhere in Chapter 34 through 43. The marking shall have the durability to withstand the environment involved.

A

placed ; provided

E 3404.11 Equipment identification

20
Q

Where caution, warning, or danger signs or labels are required by this code, the label shall meet the following requirements:

  1. The marking shall adequately warn of the hazard using effective words, colors, or symbols or combination of such.
  2. Labels shall be ___ affixed to the equipment or wiring method.
  3. Labels shall not be hand written except for portions of labels or marking that are variable, or that could be subject to change. labels shall be ___.
  4. Labels shall be of sufficient ___to withstand the environment involved.
A

permanently; legible; durability

E 3404.12 Field-applied hazard markings.

21
Q

Each disconnection means shall be legibly marked to ___ its purpose, except where located and arranged so that the purpose is evident. The marking shall have the___ to withstand the environment involved.

A

indicate; durability

E 3404.13 Identification of disconnecting means

22
Q

The dimension of the working space in the direction of access to panelboards and live parts of other equipment likely to require examination, adjustment, servicing or maintenance while energized shall be not not than ___inches in depth. the work space shall not be less than ___ inches wide in front of the electrical equipment;

A

36 inches; 30 inches;

E 3405.2 Working clearance for energized equipment and panelboards

23
Q

The working space shall be clear and shall extend from the floor or platform to a height of ___ feet or the height of the equipment, whichever is great.

A

6.5 feet

E 3405.2

24
Q

The indoor space equal to the width and depth of the panelboard and extending from the floor to a height of ___ feet above the panelboard, or to the structure ceiling, whichever is lower, shall be dedicate to the electrical installation.
The area above the dedicate space shall be permitted to contain foreign systems, provided that protection is installed to avoid ___ to the electrical equipment from condensation, leaks, and breaks in such foreign system.

A

6 feet; damage

E 3405.3 Indoor dedicated panelboard space.

25
Q

Required working space shall not be designated for storage. panelboards and overcurrent ptotection devices shall not be located in __,__,__.

A

clothes closet, bathrooms, and over the steps of a stairway.

E 3405.5 Location of working space and equipment.

26
Q

___ shall be provided for all working space for service equipment and panelboards installed indoors and shall not be controlled by automatic means only.

A

Artificial illumination

E 3405.7 Illumination

27
Q

The minimum size of conductors for feeders and branch circuits shall be ___AWG copper, and ___ AWG aluminum.

A

14; 12

E 3406.3 Minimum size of conductors.

28
Q

Where installed in raceway, conductors ___ and larger shall be stranded.

A

8 AWG

E 3406.4 Stranded conductors.

29
Q

Insulated conductors shall have insulation types identified as ___.

A

RHH, RHW, RHW-2, THHN, THHW, THW, THW-2, THWN, THWN-2, TW, UF, USE, USE-2, XHHW, XHHW-2.

E 3406.5 Individual conductor insulation.

30
Q

Conductors of dissimilar metals shall not be ___in a terminal or splicing connector where physical contact occurs between dissimilar conductors such as copper and aluminum, copper and copper-clad aluminum, or aluminum and copper-clad aluminum.

A

joined

E 3406.8 Aluminum and copper connections.

31
Q

Connectors and terminals that are more finely stranded than Class B and Class C shall be ___ for the specific conductor class or classes.

A

identified

E 3406.9 fine strand conductors

32
Q

Connection of conductors to terminal parts shall be made without damaging the conductors and shall be made by means of pressure connectors, including set-screw type, by means of splices to flexible leads, or for conductor size ___AWG and smaller by means of wire binding screws or nuts having upturned lugs or the equivalents.

A

10 AWG

E 3406.10 Terminals

33
Q

conductors shall be spliced or joined with splicing devices listed for the purpose. splices and joins and the free ends of conductors shall be covered with an insulation ___to that of the conductors or with an insulating devices listed for the purpose.Wire connectors or splicing means installed on conductors for direct burial shall be listed for such use.

A

equivalent

E 3406.11 Splices

34
Q

Conductors in raceways shall be ___between outlets, boxes, and devices and shall be without ___ or ___ in the raceway

A

continuous; splices; taps

E 3406.11.1 continuity

35
Q

Where conductors are to be spliced, terminated, or connected to fixtures or devices, a minimum length of ___ inches of free conductor shall be provided at each outlet, junction or switch point.The required length shall be measured from the point in the box where the conductor merges from its raceway or cable sheath.

A

E 3406.11.3 Length of conductor for splice or termination

6 inches

36
Q

Where the opening to an outlet, junction or switch point is less than *** inches in any direction, each conductor shall be long enough to extend at least ___ inches outside of such opening.

A

E 3406.11.3 Length of conductor for splice or termination

8 inches; 3 inches

37
Q

Connection devices or fittings that depend solely on ___ shall not be used.

A

solder

E Methods not permitted.

38
Q

Insulated grounded conductors of size ___AWG or smaller shall be identified by a continuous white or gray outer finish or by three continuous white or gray stripes on other than green insulation along the entire length of the conductors. Conductors of size ___ AWG or larger shall be identified either by a continuous white or gray outer finish or by three continuous white or gray stripes on other than green insulation along its entire length or at the time of insulation by a distinctive white or gray marking at its terminations. This marking shall encircle the conductor or insulation.

A

6 AWG; 4 AWG

E 3407.1 Grounded conductors

39
Q

Equipment grounding conductors of sizes ___ AWG or smaller shall be identified by a continuous green color or a continuous green color with one or more yellow stripes on the insulation or covering, except where bare.

A

6 AWG

E 3407.2 Equipment grounding conductor

40
Q

Insulation on the ungrounded conductors shall be continuous color other than ___,___,___.

A

white, gray, green

E 3407.3 Ungrounded conductors

41
Q

All devices, excluding panelboards, provided terminals for the attachment of conductors and intended for connection to more than one side of circuit shall have terminals properly marked for ___, except where the terminal intended to be connected to the grounded conductor is clearly evident.

A

identification

E 3407.4.1 Device terminals

42
Q

Terminal identification shall not be required for devices that have a normal current rating of over ___ amperes.

A

30 amperes

E 3407.4.1 Device terminals

43
Q

capable of being removed ore exposed without damaging the building structure or finish, or not permanently closed in by the structure or finish of thew building.

A

ACCESSIBLE (As applied to wiring methods)

chapter 35

IRC ELECTRICAL (2 decks)

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