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Philippine Electrical Code > Chapter 3 > Flashcards

Chapter 3 Flashcards

General Requirements for Wiring Methods and Materials

1
Q

Metric Designator
12
Trade size
___?

A

3/8

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2
Q

Metric Designator 155

Trade size __?

A

6

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3
Q

Metric Designator 103

Trade Size __?

A

4

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4
Q

Metric Designator 91

Trade Size __?

A

3 1/2

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5
Q

Metric Designator 21

Trade Size __?

A

3/4

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6
Q

Metric Designator 27

Trade Size __?

A

1

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7
Q

Metric Designator 53

Trade Size __?

A

2

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8
Q

Metric Designator 63

Trade Size __?

A

2 1/2

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9
Q

Metric Designator 129

Trade Size __?

A

5

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10
Q

Metric Designator 78

Trade Size __?

A

3

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11
Q

Metric Designator 35

Trade Size __?

A

1 1/4

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12
Q

Wiring methods specified in Chapter 3 shall be used for _______ volts, nominal or less.

A

1000

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13
Q

Individual conductors shall be permitted where installed as ________________.

A

Separate overhead conductors

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14
Q

The requirement to run all circuit conductors within the same raceway, auxiliary gutter, cable tray, trench, cable, or cord shall apply separately to each portion of the ________?

A

Parallel installation

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15
Q

Conductors installed in _______ ________ run underground shall be permitted to be arranged as isolated phase, neutrals and grounded conductor installations

A

Nonmetallic raceways

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16
Q

Where an auxiliary gutter runs between a _____________ and a _______, and the pull box includes neutral terminations, the neutral conductors of circuit supplied from the panelboard shall be permitted to originate in the pull box.

A

Column-width Panelboard, Pull Box

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17
Q

Conductors of Different Systems
All conductors shall have an insulation rating equal to atleast __________ circuit voltage applied to any conductor within an enclosure, cable or raceway.

A

the maximum

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18
Q

Secondary winding to electric disharge lamps of ___________, if insulated for _________ involved, shall be permiitted to occupy the same luminaire, sogns, or outline lighting as the _________.

A

1000 volts or less
Secondary voltage
Branch-circuit conductors

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19
Q

________ _________ of electric discharge lamp ballasts insulated for the primary voltage of the ballast where contained within an _________ wiring enclosure ahall be permitted to occupy the same luminaire, signs or outline lighting enclosure as the branch circuiy conductors.

A

Primary leads

Individual

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20
Q

Excitation, control, relay and ammeter conductors used in connection with any individual motor or starter shall be permitted to occupy the same enclosure as the same __________ ________, ___________ ,________

A

Motor-circuit switchgear
Switch boards
Conductors

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21
Q

In motors, trabsformers, control assemblies and similar equipment, conductors of ________ ________ __________ shall be permiitted

A

Different voltage ratings

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22
Q

Conductors shall not occupy the same enclosure, cable or raceway if:?

A

They have nonshielded insulation and operating at different voltage levels

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23
Q

Flexible metal conduits shall be permitted in lengths not exceeding ____________.

A

1.2m or 4ft.

24
Q

Conductors shall not be bent less than ______times the overall diameter for nonshielded conductors and not less than _____times the overall diameter for shielded or lead-covered conductors.

A

8

12

25
Q

For multiconductor or multiplexed single conductor, minimum bending radius of ______ times the diameter of individual shielded conductors and _______ times the overall diameter.

A

12

7

26
Q

Adjustment Factors for more than three current carrying conductors
No. of conductors: 4-6
Percent of Values;

A

80

27
Q

Adjustment Factors for More Than Three current- carrying conductors

No. of conductors; 7-9
Percent of Values;

A

70

28
Q

Adjustment Factors for More Than Three Current- carrying Conductors
No. of conductors: 4-
Percent of Values; 50

A

10-20

29
Q

Adjustment Factors for More Than Three Current- carrying Conductors

No. of conductors: 4-
Percent of Values; 35

A

Over 41

30
Q

Adjustment Factors for More Than Three Current- carrying Conductors

No. of conductors: 21-30
Percent of Values;

A

45

31
Q

Adjustment Factors for More Than Three Current- carrying Conductors

No. of conductors: 4-
Percent of Values; 40

A

31-40

32
Q

In both exposed and concealed loacations, where a cable or raceway-type wiring method is installed through bored holes in joists, rafters, or wood members, holes shall be bored so that the edge of the hole is ______________ from the nearest edge of the wood member. Where this distance cannot be maintained, the cable or raceway shall be protected from penetration by screws or nails by a steelplate or bushing is __________ thick and of appropriate length and width installed to cover the area of the wiring.

A

Not less than 32mm/at least 3.2mm

At least 1.6mm

33
Q

General Requirements for Conductors ( EXCEPTION)
_______ ________ shall not be required to protect rigid metal conduit, intermediate metal conduit , rigid nonmetal conduit or electrical metallic tubing.

A

Steel plates

34
Q

General Requirements for Conductors
( EXCEPTION)
A listed and marked ______ ______ less than _____ thick that provides ______ ___ _______ protection against nail or screw penetration shall be permitted.

A

Steel plate
1.6mm
Equal or better

35
Q

General Requirements for Conductors
( EXCEPTION)
For __________ work in finished buildings, or finished panels for prefabricated buildings where such supporting is _________ it shall be permissible to fish the cables between _______ _______

A

Concealed
Impracticable
Access points

36
Q

Cables, Raceways or Boxes Installed in or Under Roof Decking.
Installed in exposed or concealed locations under metal-corrugated sheet roof decking, shall be installed and supported so there is not less than ________ measured from the lowest surface of roof decking to the top of the cable, raceway or box.

A

38mm

37
Q

A cable, raceway or box shall not be installed in ________ _________ in metal-corrugated, sheet decking-type roof.

A

Concealed locations

38
Q

Insulated Fittings
Where raceways contain _________ insulated circuit conductors, and these conductors enter a cabinet, a box, an enclosure, or a raceway, the conductors shall be protected by an identified fitting providing a smoothly rounded insulating surface, unless the conductors are separated from the fitting or raceway by identified insulating material that is securely fastened in place.

A

22m squared or larger

39
Q

________ _______ shall not be reqd to have protective coatings.

A

Stainless steel

40
Q

Where protected from corrosion solely by ______, ferrous metal raceways, cable trays, cablebus, auxiliary gutters, cable armor, boxes, cable sheathing, cabinets, metal elbows, couplings, nipples, fittings, supports and support hardware shall not be used ___________ or in ____ ________

A

Enamel

Outdoors or in wet locations

41
Q

Where boxes or cabinets have an approved system of ________ ______and are marked _______, ________ or ______ ______ they shall be permitted outdoors.

A

Organic coatings
Raintight
Rainproof
Outdoor Type

42
Q

Ferrous metal raceways, cable armor, boxes, cable sheathing, cabinets, elbows, couplings, nipples, fittings, support and support hardware shall be permitted to be installed in __________ or in __________ _____ with the earth or in areas subject to severe corrosive influences where made of material approved for the condition or where provided with corrosion protection approved for the condition.

A

Concrete

Direct contact

43
Q

Aluminum Metal Equipment.

Embedded or encased in concrete or in direct cobtact with the earth shall be provided with __________.

A

Supplementary corrosive protection

44
Q

Nonmetallic Equipment
Shall be made of material approved for the condition and shall comply with
(1)Exposed to sunlight. Where to exposed to sunlight, shall be listed as _______ _______ or shall be identified as _____ _______

A

Sunlight resistant

Sunlight resistant

45
Q

(2) Where subject to exposure to ______ solvents, vapors, splashing, or immersion, materias or coatings shall either be inherently resistant to _______ based on their listings or be indentified for the specfic ______ _______

A

Chemicals
Chemicals
Chemical reagent

46
Q

Indoor Wet Locations. The entire wiring system, where installed _______ , including all boxes, fittings, raceways and cable used therewith, shall be mounted so that there is at least ________ ______between it and the wall or supporting surface.

A

Exposed

6mm airspace

47
Q

Indoor Wet Locations (EXCEPTION)
________ raceways, boxes, and fittings shall be permitted to be installed without the airspace on a concrete, masonry, tile or similar surface.

A

Nonmetallic

48
Q

Where portions of a raceway or sleeve are known to be subjected to __________ _________ and where __________ is known to be a problem, as in cold storage areas of buildings or where passing from the interior to the exterior of a building, the raceway or sleeve shall be filled with an approved material to prevent _________ ____ ______ _____ __ ______ ________raceway or sleeve.

A

Different temperatures
Condensation
The circulation of warm air to colder section

49
Q

An ________ ________ shall not be reqd for raceways exposed to different temperatures

A

Explosionproof seal

50
Q

Raceways shall be provided with expansion, expansion-deflection, deflection fittings where necessary to compensate for ______ _______,_________ and ______.

A

Thermal expansion
Deflection
Contraction

51
Q

Short sections of raceways used to provide support or protection of cable assemblies from physixal damage shall not be required to be made _______ ________.

A

Electrically continuous

52
Q

Equipment enclosures to be isolated, shall not be required to be ________ _______ to the metal raceway.

A

Metallically joined

53
Q

_______ shall be conspicuously posted at points of access to conductors in all conduit systems and cable systems.

A

Warning signs

54
Q

True or False: Round boxes shall not be used where conduits or connectors requiring the use of locknuts or bushings are to be connected to the side of the box.

A

True

55
Q

In the volume allowance required per conductor, a conductor of a size 3.5 mm2 has a free space within box of about ___.

A

36 cubic centimeter

Philippine Electrical Code (2 decks)

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