Identification

The PEC does not cover the following except for.

a. Installations of building communication system

b. watercraft other than floating buildings

c. aircraft

d. automotive vehicles

2. This Code is intended to be suitable for ______application by governmental

bodies that exercise

legal jurisdiction over electrical installations, including signaling and

communications systems,

and for use by insurance inspectors.

a. mandatory b. advisory c. regulatory d. a,b and c

3. What does FPN in PEC mean.

a. For Philippine Name only b. fine print notes

c. For printed notes only d. For Philippine Notes only

4. The Code does not contain detailed information on equipment or materials

but refers to the

products as

a. listed b. labeled c. identified d. all of these

5. In PEC Wiring Planning includes.

a. Future Expansion b. Number of Circuits in Enclosures

c. Convenience d. all of these

6. For the purpose of this Code, metric units of measurement are in

accordance with the modernized

metric system known as the

a. International System of Units (SI) b. CGS units

c. IEC units d. English units

7. Accessible ,as applied to wiring methods means

a. Capable of being removed or exposed without damaging the building

structure

b. finish or not permanently closed in by the structure

c. finish of the building

d. all of the above

8. By definition Readily Accessible does not conform to

a. Capable of being reached quickly for operation, renewal, or inspections

without requiring those

to whom ready access is requisite to climb over

b. remove obstacles

c. to resort to portable ladders

d. with padlocks

9. The purpose of bonding is to establish an effective path for fault current

that, in turn, facilitates

a. the operation of the over current protective device

b. the operation of the over load device

c. the operation of the cable

d. the operation of the disconnect

10. The connection between the grounded circuit conductor and the
equipment grounding conductor

at the service.

a. Main Bonding Jumper b. Equipment Bonding Jumper

c. System Bonding Jumper d. Grounding

11. General-Purpose Branch Circuit means

a. A branch circuit that supplies outlets for lighting

b. A branch circuit that supplies two or more receptacles or outlets for

lighting and appliances.
c. A branch circuit that supplies only one utilization equipment.

d. A branch circuit that supplies only one lighting units

12. According to the Code automatic opening of circuit breaker means can be
any of the following

except for

a. Integral b. direct acting with the circuit breaker

c. shunt trip d. remote from the circuit breaker

13. A qualifying term indicating that there is purposely introduced a delay in

the tripping action of the

circuit breaker, which delay decreases as the magnitude of the current

increases.

a. Adjustable b. Instantaneous Trip

c. Inverse Time d. Sub transient Trip delay

14. Conductors drawn from a copper-clad aluminum rod with the copper
metallurgically bonded to an

aluminum core. The copper forms a minimum of 10 percent of the cross-

sectional area of a solid

conductor or each strand of a stranded conductor.

a. Copper-Clad Aluminum Conductors b. Impregnated Copper Conductor

c. ACSR d. AAAC

15. Which of the following operation of motor is not correct?

a. Intermittent duty means Operation for alternate intervals of motor for load
and no load; or load

and rest; or load, no load, and rest.

b. Periodic Duty Intermittent operation in which the load conditions are

regularly recurrent.

c. Short-Time Duty Operation at a substantially constant load for a short and

definite, specified
time.

d. Varying duty Operation at loads, and for intervals of time, both of which
may be subject to

constant variation of mechanical load.

16. It is a term for proper arrangement of incandescent lamps or electric-

discharge lighting to outline

or call attention to certain features such as the shape of a building or the

decoration of a window.

a. Outline Lighting b. lighting track c. lighting grid d. lighting template

17. Insulation is one of the most important parts of the electrical system that

a. Prevents the flow of electricity between points of different potential in an

electrical system.

b. Prevents the flow of electricity between points of different current in an

electrical system

c. Prevents the electromagnetic induction between two electrical system

d. Prevents the flow of arc between points of different potential in an

electrical system

18. Illumination shall be provided for all working spaces about electrical
equipment. The lighting

outlets shall be arranged so that

a. Persons changing lamps or making repairs on the lighting system are not
endangered by live

parts or other equipment.

b. Lamp can be easily repair

c. To follow lighting grid

d. For beauty

19. the correct formula for Elevation of Unguarded Live Parts Above Working
Space over 34.5 kV is

a. 2800 mm + 10 mm per kV b. 5500 mm + 10 mm per kV

c. 2000 mm + 10 mm per kV d. 1800 mm + 10 mm per kV

20. The following shall be used only for the grounded circuit conductor
except for

a. conductor with continuous white or gray covering

b. conductor with three continuous white stripes on other than green

insulation

c. marking of white or gray color at the termination

d. yellow color

21. The terminal for the connection of the equipment grounding conductor
shall be identified by one

of the following except for

a. A green, not readily removable terminal screw with a hexagonal head.

b. A green, hexagonal, not readily removable terminal nut.

c. A green pressure wire connector.

d. entrance hole marked with the word gray

22. The magnitude of the reflected wave increases as the distance from the
arrester increases. If the

length of the conductor between the protected equipment and the surge
arrester is short, the

magnitude of the wave reflected through the equipment is minimized due to

a. wave effect b. ferranti effect c. Petersen effect d. separation effect

23. The equipment grounding conductor of a grounding-type receptacle or a

branch-circuit extension

shall be permitted to be connected to any of the following:

a. Any accessible point on the grounding electrode system

b. Any accessible point on the grounding electrode conductor

c. The equipment grounding terminal bar within the enclosure where the
branch circuit for the

receptacle or branch circuit originates

d. the grounded service conductor outside the service equipment enclosure

24. One of the functions of an equipment grounding conductor is to provide a

_______impedance

ground-fault path between a ground fault and the electrical source

a. Low b. high c. open d. short

25. Which among the following is not stated in PEC? It shall be permissible to
ground meter

enclosures by connection to the grounded circuit conductor on the load side

of the service

disconnect if

a. No service ground-fault protection is installed, and

b. All meter enclosures are located near the service disconnecting means,
and

c. The size of the grounded circuit conductor is not smaller than equipment
grounding

conductors.

d. Bonding is not possible

26. The grounding conductor for secondary circuits of instrument

transformers and for instrument

cases shall not be smaller than ____ sq mm copper or ______ sq mm

aluminum.

a. 3.5, 5.5 b. 2.0, 3.5 c. 5.5, 8.0 d. 3.5, 8.0

27. Which of the following provisions for neutral conductor is not correct?

a. The minimum insulation level for neutral conductors of solidly grounded

systems shall be 600

volts.

b. Bare copper conductors shall be permitted to be used for the neutral of

service entrances and

the neutral of direct-buried portions of feeders.

c. Bare conductors shall be permitted for the neutral of overhead portions
installed outdoors.

d. It has a disconnect

28. Line and ground connecting conductors for lightning arrester shall not be
smaller than ____sq

mm copper or _____sq mm aluminum.

a. 3.5, 5.5 b. 2.0, 3.5 c. 5.5, 8.0 d. 3.5, 8.0

29. For Circuits of 1 kV and over conductors between the surge arrester and
the line and the surge

arrester and the grounding connection shall not be smaller than ______ sq
mm copper.

a. 8.0 b. 14.0 c. 2.0 d. 5.5

30. For a wye-start, delta-run connected motor, the selection of branch-

circuit conductors on the line

side of the controller shall be based on the motor full-load current. The
selection of conductors

between the controller and the motor shall be based on _____ percent of the
motor full-load

current.

a. 58 b. 73 c. 15 d. 25

31. Where one or more of the motors of the group are used for short-time,
intermittent, periodic, or

varying duty, the ampere rating of such motors to be used in the summation
shall be for the

highest rated motor, the greater of either the ampere rating or the largest
continuous duty motor

full-load current multiplied by _____shall be used in the summation.

a. 0.8 b.1 c. 1.25 d. 2.5

4
32. Each autotransformer 600 volts, nominal, or less shall be protected by
________device installed

in series with each _____ input conductor. Such overcurrent device shall be
rated or set at not

more than 125 percent of the rated full-load input current of the
autotransformer.

a. an individual overcurrent, ungrounded b. disconnect, ungrounded

c. an individual overcurrent, grounded d. disconnect, grounded

33. Grounding autotransformers can either be_________ connected to 3-

phase, 3-wire ungrounded

systems for the purpose of creating a 3-phase, 4-wire distribution system or

providing a neutral

reference for grounding purposes. Such transformers shall have a continuous

per-phase current

rating and a continuous neutral current rating except for.

a. zigzag transformers b. T-connected transformers

c. buck or boost d. vertex grounded delta

34. A fault-sensing system that causes the opening of a main switch or

common-trip overcurrent

device for the 3-phase, 4-wire system shall be provided to guard against

a. single-phasing or internal faults. b. double fed fault

c. Three phase fault d. series fault

35. An overcurrent protective device of adequate short-circuit rating that will

open simultaneously all

ungrounded conductors when it operates shall be applied in the grounding

autotransformer

branch circuit and shall be rated or set at a current not exceeding 125
percent of the

autotransformer continuous per-phase current rating or ___percent of the

continuous-current
rating of any series connected devices in the autotransformer neutral
connection.

a. 53 b. 42 c. 125 d. 73

36. A device, or group of devices, or other means by which the conductors of

a circuit can be

disconnected from their source of supply.

a. Circuit breaker b. disconnect c. switcher d. isolator

37. The case or housing of apparatus, or the fence or walls surrounding an

installation to prevent

personnel from accidentally contacting energized parts or to protect the

equipment from physical

damage.

a. fitting b. box c. Enclosure d. junction box

38. In dwelling units, at least one wall receptacle outlet shall be installed in
bathrooms within ____ of

the outside edge of each basin. The receptacle outlet shall be located on a
wall or partition that is

adjacent to the basin or basin countertop.

a. 450 mm b. 500 mm c. 1800 mm d. 900 mm

39. A single yoke will supply a certain types of load. What shall be the
maximum total volt-ampere

rating of the load for that purpose.

a. 90 b. 450 c. 180 d. 360

40. Sign and outline lighting outlets shall be computed at a minimum of

______ volt-amperes for each

required branch circuit

a. 1200 b. 1440 c. 1500 d. 1800

41. If a 8.0 sq mm bare aluminum conductor can safely handle 98 A, then

how much current can a

8.0 sq mm covered copper conductor can safely handle.

a. 89 A b. 103 A c. 130 A d. 98 A

42. Which of the following is not standard cross sectional area of conductor?

a. 1.25 sq mm b. 0.75 sq mm c.5.5 sq mm d. 3.0 sq mm

43. Adjustment factor shall only be applied to bundled conductor on

conduit/raceway larger than.

a. 500 mm b. 150 mm c. 600 mm d. 760 mm

44. Type MV cable is a single or multiconductor solid dielectric insulated

cable rated _________ or

higher.

a. 20001 V b. 35 kV c. 4.16 kV d. 660 kV

45. Type MV cable are permitted for use on power system rated up to.

a. 69 V b. 35 kV c. 4.16 kV d. 660 kV

46. What is the MINIMUM size underground service lateral for a copper-clad
aluminum single-branch

circuit serving a controlled water heater?

a. 14 sq mm b. 8.0 sq mm c. 5.5 sq mm d. 3.5 sq mm

47. Where the number of current-carrying conductors in a raceway or cable

exceeds three, or where

single conductors or multiconductor cables are stacked or bundled longer

than ________ without

maintaining spacing and are not installed in raceways, the allowable

ampacity of each conductor

shall be reduced

a. 300 b. 600 c. 100 d. 500

48. Coatings on which of the following shall be removed at threads, contact

points, and contact surfaces

or be connected by means of fittings so designed as to make such removal

unnecessary in bonding
other enclosures for grounding?

a. Copper b. Zinc c. Aluminum d. Enamel

49. What color must be used to identify an insulated 14 sq mm or smaller

grounded conductor?

a. Black b. Brown c. Gray d. Green

50. If the utility specifies that the service point is at the point of attachment
of the service drop to the

house, then the service-drop conductors are not considered service

conductors because

a. the service drop is not on the premises wiring side of the service point

b. the service drop is also the service point

c. the service point is usually not located at the house

d. the service point is overhead

51. Use of UF cable is permitted ________.

a. for interior wiring in wet locations b. in service entrance conductors

c. in theaters d. where embedded in poured concrete

52. What is the MAXIMUM allowable AWG size for a solid conductor installed
in a raceway?

a. 6 AWG b. 8 AWG c. 10 AWG d. 12 AWG

53. Listed nonmetallic raceways are permitted for all of the following uses
EXCEPT

a. in exposed work

b. where subject to corrosive vapors

c. in wet locations

d. where subject to physical damage

54. What is the MAXIMUM allowable electrical potential for low-voltage

equipment in frequent contact

with patient's bodies?

a.. 6 volts b. 10 volts c. 12 volts d. 24 volts

55. What is the MINIMUM size wire permitted as a bonding jumper between
the communications

grounding electrodes and power grounding electrodes in a communications

circuit?

a. This connection is not permitted. b. 14.0 sq mm c. 5.5 sq mm d. 3.5 sq

mm

56. Ceiling fans may be supported solely by outlet boxes that are identified
for such use, as long as the

fans do not exceed ________ lbs. in total weight.

a. 100 b. 75 c. 50 d. 35

57. What is the MAXIMUM permitted rating on branch circuits supplying signs
or outline lighting

systems?

a. 15 amps b. 20 amps c. 25 amps d. 30 amps

58. Conductors within electrical nonmetallic tubing may carry a MAXIMUM of

a. 300 volts. B. 450 volts. c. 500 volts. d. 600 volts.

59. In practice, to compensate for voltage drops in a long circuit.

a. larger conductors with a higher ampacity are commonly used

b. the conductors are rerouted in such a way as to decrease the length of the
conductor

c. Use aluminum conductor

d. Use metallic conduit

60. All of the following are methods of heat transfer EXCEPT:

a. conduction b. compression c. convection d. radiation

61. Three 3-phase circuits in the same raceway, protected by overcurrent

devices rated 30, 60,

and 100 amperes, what shall be the size of equipment grounding conductor.

a. 30 A b. 60 A c. 100 A d. 190 A
62. To reach a lighting fixture junction box you had to stand on a ladder. This
junction box is

considered to be _______.

a. concealed b. readily accessible c. accessible d. hidden

63. The Philippine Electrical Code requires that conduit must be continuous
from outlet to outlet,

must be mechanically and electrically connected to all fittings, and must be

suitably

grounded. The reason for having the conduit electrically continuous and
grounded is to

a. provide metallic return conductor

b. shield the wires inside the conduit from external magnetic fields

c. make it easy to test wiring connections

d. prevent electrical shock which might otherwise result from contact with
the conduit

64. In industrial facilities where conditions of maintenance and supervision

ensure only qualified

persons will service the installation, you may use cable tray systems to
support _____.

a. raceways b. cables c. boxes and conduit bodies d. all of these

65. The minimum insulation level for neutral conductors in solidly grounded
systems is ________

volts.

a. 600 b. 1,000 c. 1,500 d. 2,100

66. Which of the following is the best way to eliminate stroboscopic effect

a. Using new luminaries b. using 400 Hz frequency

c. used flat cord d .using 500 v

67. What size of UF wire should be used to supply 20 A loads at a temp of 35

degree Celsius? The

correction factor is 0.94.

a. 2.0 b. 3.5 c. 5.5 d. 8.0

68. _____ of the two to six disconnecting means permitted where used only
for a water pump also

intended to provide fire protection, shall be permitted to be located remote

from the other

disconnecting means.

a. One b. two c. none d. six

69. A pendant fixture is a _______ fixture.

a. hanging b. Recessed c. Bracket d. none of these

70. A 115 volt circuit is carrying 50 amps, the voltage drop is 2% of the
source voltage. How much

power is lost in the conductors?

a. 2.3 watts b. 115 watts c. 112.7 watts d. none of these

71. If potential exceeding ______ v ,warning signal shall be displayed

a. 500 b. 400 c. 600 d. 700

72. A transverse metal raceway for electrical conductors, furnishing access

to predetermined cells of

a precast cellular concrete floor, which permits installation of conductors

from a distribution center

to the floor cells is called _______.

a. an under floor raceway b. a header duct

c. a cellular raceway d. a mandrel

73. Conduit shall be _____.

a. threaded b. electrically continuous c. reamed d. cut square

74. Any motor application shall be considered as _______ unless nature of the
apparatus it drives is

such that the motor will not operate continuously with load under any
condition of use.
a. short-time duty b. varying duty c. continuous duty d. periodic duty

75. An over current trip unit of a circuit shall be connected in series with
each ______.

a. ungrounded conductor b. grounded conductor

c. over current device d. transformer

76. Cable trays shall ______.

I. have side rails or equivalent structural members

II. not present sharp edges or burrs

III. have suitable strength and rigidity

a. I only b. I and II only c. III only d. I, II, and III

77. Over current protective devices shall be so selected and coordinated as

to permit the circuit

protective devices used to clear a fault without the occurrence of extensive

damage to the

electrical components of the circuit. This fault shall be assumed to be

________.

I. between any circuit conductor and the grounding conductor or enclosing

metal raceway

II. between two or more of the circuit conductors

a. I only b. II only c. both I and II d. neither I nor II

78. For feeder supplying household cooking equipment and electric clothes
dryers the maximum

unbalanced load on the neutral conductor shall be considered as ______ of

the load on the

ungrounded conductors.

a. 40% b. 50% c. 70% d. 80%

79. Where a transformer or other devices is used to obtain a reduced voltage

for the motor control

circuit and is located in the controller, such transformer or other devices shall
be connected
________ for the motor control circuit.

I. to the load side of the disconnecting means

II. to the line side of the disconnecting means

a. I only b. II only c. either I or II d. neither I nor II

80. Messenger supported wiring shall not be used _______.

I. where subject to severe physical damage

II. in hoist ways

a. I only b. II only c. both I and II d. neither I nor II

81. Which choice is NOT a rule when sizing a device box?

a. a wire not spliced counts as one wire

b. a wire that terminates in a box counts as one wire

c. a wire contained within a box counts as one wire

d. all grounded wires count as one wire

82. When using a snap switch the ampere rating must be ___________ the full-
load current of the

motor.

a. 115% above b. 2 times c. 125% above d. 15 A over

83. The following are the standard ampere ratings for fuses and inverse time
circuit breakers except

for.

a. 125 b. 150 c. 175 d. 95 A

84. How many mm do you need to sufficiently ground to a water pipe?

a. 1500 b. 10 c. 15 d. 20

85. Splices may not occupy more than ______% of the cross- sectional area in
the auxiliary gutter

a. 75% b. 50% c. 70% d. 60%

86. The normal fluorescent lamp is designed for operation at _______F°

a. 50 b. 20 c. 30 d. 40

87. The resistance of made electrode should not exceed _____.

a. 25 W b 30W c. 40 d. 50W

88. In a group of four motors, one motor draws 10 ampere, one draws 45
ampere and two draws 75

ampere. What size of conductor must be used for the feeder circuit?

a. 224 A b. 228 A c. 300 A d.124 A

89. The voltage change resulting from motor starting

a. voltage swell b. voltage sag c. voltage dip d. voltage drop

90. A tool that is used to aligned vitrified tile conduit in multiple ducts is a

a. mandrel b. Neil c. hickey d. growler

91. The definition of ambient temperature is

a. the temperature of the conductor

b. the insulation rating of the conductor

c. the temperature of the area surrounding the conductor

d. the maximum heat the insulation can be used within

92. Determine the minimum size for electric clothes dryer

a. 3.5 TW b. 3.5 THW c. 5.5 TW d. 5.5 THW

93. The PEC rules on Fire Protective Signaling Systems cover the installation
wiring and equipment

up to what maximum voltage?

a. 150 volts b. 300 volts c. 750 volts d. 600 volts

94. For distribution lines supported on poles and installed above

communication conductors, the

horizontal clearance necessary to provide climbing space shall NOT be less

than what minimum

distance?

a. 500 mm b. 1000 mm c. 600 mm d. 760 mm

95. A load of 180 volt-amperes is not required to be considered for outlets
supplying recessed lighting

fixtures, lighting outlets for general illumination, and small-appliance branch

circuits because

a. cases would be unrealistic

b. It would unnecessarily restrict the number of lighting or receptacle outlets

on branch circuits in

dwelling units.

c. There is a separate table for lighting load

d. 24 VA per sq m is the basis.

96. The thermal protective device of a motor which is its integral part, with
full load current of 20

Amps. and above, has a setting of:

a. 140% b. 150% c. 170% d. 125%

97. The thermal protector of motor which is integral part of motor with full
load current of 9 amps. and

below, has the setting of:

a. 140% b. 170% c. 150% d. 115%

98. For areas used as amphitheaters and TV studio, the application of 100%
demand factor is on the

first:

a. 10 kVA b. 30 kVA c. 50 kVA d. 60 kVA

99. The electrical system of an Aircraft is not under the coverage of electrical
engineering practice

because their frequency is under Avionics. The frequency is;

a. 500 Hz b. 400 Hz c. 1000 Hz d. 200 Hz

100. This is the largest stranded conductor that can be screwed to terminal
plates as per NEC,
PEC and other worldwide.

a. 2 mm sq. b. 3.5 mm sq. c. 5.5 mm sq. d. 8 mm sq