Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Philippine Electrical Code > Chapter 3 > Flashcards

Chapter 3 Flashcards

1
Q

Direct buried conductors and cables emerging from grade and specified in columns 1 and 4 of table 3.0.1.5 shall be protected by enclosures or raceways extending from the minimum cover distance below grade to a point at least ________ above finished grade. In no case shall the protection be required to exceed ______ below finished grade.

A

2500 mm, 450 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Underground service conductors that are not encased in concrete and that are buried 450 mm or more below grade shall have their location identified by a ________ that is placed in the trench at least ______ above the underground installation.

A

Warning ribbon, 300 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

In both exposed and concealed locations, where a cable or a raceway-type wiring method is installed through bored hole in joists, rafters, ir wood members, holes shall be bored so that the edge of the hole is not less than _______ from the nearest edge of the wood member.

A

32 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The cable or raceway shall be protected from penetration by screws or nails by a steel plates or bushings, at least _______ thick, and of appropriate length and width installed to cover the area of the wiring.

A

1.6 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

A cable, raceway, or box, installed in exposed or concealed locations under metal-corrugated sheet roof decking, shall be installed and supported so there is not less than ______ measure from the lowest surface of the roof decking to the top of the cable, raceway, or box.

A

38 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

True or False.

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

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Cable- and raceway-type wiring methods installed in a groove, to be covered by wallboard, siding, panelling, carpeting, or similar finish shall be protected by ______ thick steel plate, sleeve or equivalent or by not less than ______ free space for the full length of the groove in which the cable or raceway is installed.

A

1.6 mm, 32-mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Where raceways contain _______ mm2 or larger 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

22

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Conduits or raceways through which moisture may contact live parts shall be sealed or plugged at either or both ends. Spare or unused raceways shall also be sealed. _______ shall be identified for use with the cable insulation, conductor insulation, bare conductor, shield, or other components.

A

Sealants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Where protected from corrosion solely by _________, ferrous metal raceways, cable trays, cablebus, auxiliary gutter, cable armor, boxes, cable sheathing, cabinets, metal elbows, couplings, nipples, fittings, supports, and support hardware shall not be used outdoors or in wet location.

A

Enamel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

T or F

Support wires that do not provide secure support shall be permitted as the sole support.

A

F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

T or F

Support wires and associated fittings that provide secure support and that are installed in addition to the ceiling grid support wired shall be permitted as the sole support.

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

At least _____ of free conductor, measured from the point in the box where it emerges from its raceway or cable sheath, shall be left at each outlet, junction, and switch point for splices or the connection of luminaires or devices.

A

150 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Where the opening to an outlet, junction or switch point is less than _______ in any dimension, each conductor shall be long enough to extend at least _______ outside the opening.

A

200 mm, 75 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

FMC shall be permitted, in lengths not to exceed ______ to connect physically adjustable equipment and devices permitted to be in these fabricated ducts.

A

1.2 m (4ft)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Identification.

Electrical conduits, or other raceways round in cross section, that are suitable for use underground or embedded in concrete.

A

Electrical Ducts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Identification.

The heat transfer capability through a substance by conduction.

A

Thermal Resistivity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

For other establishments, solid dielectric insulated conductor operated above ________ volts in permanent installation shall have ozone-resistant insulation and shall be shielded.

A

2000V

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Conductors used for direct-burial application shall be of a type identified for such use. Cables rated above _______ shall be shielded.

A

2000V

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Nonshielded multiconductor cables rated _________ shall be permitted if the cable has an overall metallic sheath or armor.

A

2001-2400V

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Airfield lighting cable used in series circuits that are rated up to _______ and are powered by regulators shall be permitted to be nonshielded.

A

5000V

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Cabinets and cutout boxes that contain devices or apparatus connected within the cabinet or box to more than ____ conductors, including those of branch circuits, meter loops, feeder circuits, power circuits, and similar circuits, but not including the supply circuit or a continuation thereof, shall have back-wiring spaces or one or more side-wiring spaces, side gutters, or wiring compartments.

A

8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

T or F

Cabinets and cutout boxes shall be deep enough to allow the closing of the doors when 30-ampere branch-circuit panelboard switches are in any position, when combination cutout switches are in any position, or when other singe-throw switches are opened as far as their construction permits.

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

There shall be an airspace of at least _____ between the walls, back, gutter partitions, if of metal, or door of any cabinet or cutout box and the nearest exposed current-carrying part of devices mounted within the cabinet where the voltage does not exceed 250. This spacing shall be increased to at least _______ for voltages of 251-1000, nominal.

A

12.7 mm, 25.4 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Exception: Where the door is lined with an approved insulating material or is of a thickness of metal not less than _______ uncoated, the airspace shall not be less than 12.7 mm.

A

2.36 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

There shall be an airspace of at least ______ between any live part, including live metal parts of enclosed fuses, and the door.

A

25.4 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Other than at points of support, there shall be an airspace of at least ______ between the base of the device and the wall of any metal cabinet or cutout box in which the device is mounted.

A

1.59 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

The design and construction of enclosures within the scope of this article shall be such as to secure ample strength and rigidity. If constructed of sheet steel, the metal thickness shall not be less than ______ uncoated.

A

1.35 mm

29
Q

The wiring space of enclosures for switches and oc devices shall be permitted to contain power monitoring equipment where the total area of all conductors, splices, taps, and equipment at any cross section of the wiring space does not exceed _____ percent of the cross sectional area of that space.

A

75

30
Q

The wiring space of enclosures for switches and oc devices shall be permitted for conductors feeding through, spliced, or tapping off to other enclosures, switches, or oc devices where the total area of all conductors, splices and taps installed at any cross section of the wiring space does not exceed ______ of the cross sectional area of that space.

A

75%

31
Q

The wiring space of enclosures for switches and oc devices shall be permitted for conductors feeding through, spliced, or tapping off to other enclosures, switches, or oc devices where the total of all conductors installed at any cross section of the wiring space does not exceed ______ percent of the cross-sectional area of that space.

A

40

32
Q

Note.

The paralleled conductors in each phase, polarity, neutral, grounded circuit conductor, egc, or equipment bonding jumper shall comply with all of the ff:

A
  1. Be the same length
  2. Consists of the same conductor material.
  3. Be the same size in square mm area.
  4. Have the same insulation type.
  5. Be terminated in the same manner.
33
Q

Where more than one ampacity applies for a given circuit length, the lowest value shall be used.

Exception: Where diff ampacities apply to portions of a circuit, the higher ampacity shall be permitted to be used if the total portion of the circuit with the lower ampacity does not exceed the lesser of _______ or ____ percent of the total circuit.

A

3000 mm, 10

34
Q

Adjustment factors shall not apply to underground conductors entering or leaving an outdoor trench if those conductors have physical protection in the form of rmc, imc, pvc, or rtrc having a length not exceeding ______, and if the number of conductors does not exceed 4.

A

3000 mm

35
Q

Exception: Where raceways or cables are exposed to direct sunlight on or above the rooftops, raceways or cables shall be installed a min distance above roof to the bottom of the raceway or cable of _____. Where the distance above the roof to the bottom of the raceway is less than ____, a temp adder of 33oC shall be added to the outdoor temp to determine the applicable amb temp for applications of the correction factors in table 3.10.2.6B2

A

23 mm both

36
Q

Where bare and covered conductors are installed with insulated conductors, the temperature rating of the bare or covered conductor shall be _____ to the lowest temperature rating of the insulated conductor for the purpose of determining ampacity.

A

Equal

37
Q

Where installed in raceways, conductors _______ and larger, not specifically permitted or required elsewhere in this code to be solid, shall be stranded.

A

8.0 mm2 (3.2 mm dia)

38
Q

The ff conductors and cables shall be durably marked on the surface. The square mm size or area shall be repeated at intervals not exceeding _____. All other markings shall be repeated at intervals not exceeding ______.

  1. Single cond and multiconductor rubber- and thermoplastic insulated wire and cable.
  2. Non-metallic sheath cable
  3. Service entrance cable
  4. Underground feeder and bc cable
  5. Tray cable
  6. Irrigation cable
  7. Power-limited tray cable
  8. Instrumentation tray cable
A

600 mm, 1000 mm

39
Q

In walls of concrete, tile or other noncombustible material, cabinets shall be installed so that the front edge of the cabinet is not set back of the finished surface more than ___.

A

6 mm

40
Q

Noncombustible surfaces that are broken or inc shall be repaired so there will be no gaps or open spaces greater than _____ at the edge of the cabinet or cutout box employing a flush-type cover.

A

3 mm

41
Q

Identification.

A fabricated assembly of insulated conductors in a flexible interlocked metallic armor.

A

Armored Cable, Type AC

42
Q

Identification.

An assembly of parallel conductors formed integrally with an insulating material web specifically designed for field installation in surface metal raceway.

A

Flat Cable Assembly, Type FC

43
Q

Identification.

A protective layer that is installed between the floor and type fcc flat conductor cable to protect the cable from physical damage and may or may not be incorporated as an integral part of the cable.

A

Bottom Shield

44
Q

Identification.

A connector designed to join type fcc cables without using a junction box.

A

Cable Connector

45
Q

Identification.

A complete wiring system for branch circuits that is designed for installation under carpet squares,

A

FCC System

46
Q

An insulator designed to electrically insulate the end of a type fcc cable.

A

Insulating End

47
Q

Means of connection designed to electrically and mechanically connect a metal shield to another metal shield, to a receptacle housing or self-contained device, or to a transition assembly.

A

Metal Shield Connections

48
Q

A grounded metal shield covering under carpet components of the fcc system for the purpose of providing protection against physical damage.

A

Top shield

49
Q

An assembly to facilitate connection of the fcc system to other wiring systems, incorporating (1) a means of electrical interconnection and (2) a suitable box or covering for providing electrical safety and protection against physical damage.

A

Transition Assembly

50
Q

Three or more flat copper conductors placed edge-to-edge and separated and enclosed within an insulating assembly.

A

Type FCC Cable

51
Q

A factory assembly of one or more conductors, each individually insulated and enclosed in a loose fit, nonmetallic flexible conduit as an integrated gas spacer cable rated 0 through 600V.

A

Integrated Gas Spacer Cable, Type IGS

52
Q

A single multiconductor solid dielectric insulated cable rated 2001 volts or higher.

A

Medium Voltage Cable, Type MV

53
Q

A factory assembly of one or more insulated corcuit conductors with or without optical fiber members enclosed in an armor of interlocking metal tape, or a smooth or corrugated metallic sheath.

A

Metal Clad Cable, Type MC

54
Q

A factory assembly of one or more conductors insulated with a highly compressed refractory mineral insulation and enclosed in a liquidtight and gastight continous copper or alloy metal sheath.

A

Mineral Insulated, Metal Sheath Cable, Type MI

55
Q

A factory of two or more insulated conductors enclosed within an overall nonmetallic jacket.

A

Nonmetallic Sheathed Cable

56
Q

Outlet boxes that do not enclose devices or utilization equipment shall have a min. internal depth of ______ .

A

12.7 mm

57
Q

______ shall be designed and installed to withstand all loads likely to be imposed on them. They shall be identified for use in underground systems.

A

Handhole enclosures

58
Q

Handhole enclosures covers shall have an identifying mark or logo that prominently identifies the function of the enclosure , such as _____.

A

Electric

59
Q

Handhole enclosure covers shall require the use of tools to open, or they shall weigh over ______.

A

45kg

60
Q

Insulated conductors enclosed within an overall nonmetallic jacket

A

Type NM

61
Q

Insulated conductors enclosed within an overall, corrosion resistant, nonmetallic jacket

A

Type NMC

62
Q

Insulated power or control conductors with signalling, data, and communications conductors within an overall nonmetallic jacket

A

Type NMS

63
Q

A factory assembly of two or more insulated conductors, with or without associated bare or covered grounding conductors, under a nonmetallic jacket

A

Power and Control Tray Cable, Type TC

64
Q

Type TC cable is secured at intervals not exceeding _____

A

1800mm

65
Q

A single conductor or multiconductor assembly provided with or eithout an overall covering, primarily used for services

A

Service-Entrance Cable

66
Q

Service-entrance cable having a flame-retardant, moisture resistant covering

A

Type SE

67
Q

Servicd entrance cable, identified for underground use, having a moisture resistant covering, but not required to have a flame retardant covering

A

Type USE

68
Q

A factory assembly of one or more insulated conductors with an integral or an overall covering of nonmetallic material suitable for direct burial in the earth.

A

Underground Feeder and Branch-Circuit Cable, Type UF

Philippine Electrical Code (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions