PEC - RR

Wireways shall be supported at intervals NOT exceeding a certain minimum distance. How much is this distance? A. 1,500 mm B. 2,000 mm C. 1,200 mm D. 1,800 mm

A. 1,500 mm

The alternate or back-up source of power in a hospital shall have a capacity to sustain its connected loads for a minimum of how many hours? A. 1.5 hours B. 2.0 hours C. 1.0 hour D. 2.5 hours

A. 1.5 hours

What is the minimum vertical, horizontal, or diagonal clearance for open conductors from signs, chimneys, radio and television antennas, tanks, or other non-building structures? A. 1000 mm B. 1500 mm C. 1800 mm D. 1200 mm

A. 1000 mm

The rating of the overcurrent device shall not be less than the non-continuous load plus a percentage of the continuous load A. 125 % B. 80 % C. 100 % D. 140 %

A. 125 %

In wiring using rigid metal conduits, conduit smaller than __________ shall not be used. A. 15 mm B. 32 mm C. 8 mm D. 25 mm

A. 15 mm

A 20 ampere rated branch with 3.5 mm2 wire supplying a duplex receptacle can be loaded to a maximum of __________ amperes. A. 16 B. 20 C. 12 D. 10

A. 16

Communication conductors shall NOT be smaller than which of the following sizes? A. 2.0 mm2 B. 1.25 mm2 C. 3.5 mm2 D. 5.5 mm2

A. 2.0 mm2

What is the minimum thickness of faceplates for insulating material that are non-combustible? A. 2.5 mm B. 1.5 mm C. 2.0 mm D. 3.0 mm

A. 2.5 mm

For a dwelling unit having a floor area not more than 50 square meters shall be permitted to have a single 20-A, 2-ma branch circuit provided the total load shalt NOT exceed how many volt-amperes? A. 3,680 B. 3,860 C. 3,080 D. 3,068

A. 3,680

What is the maximum number of conductors permitted in a wireway at any cross-section, signal circuit or starter-control wires are not included? A. 30 conductors B. 50 conductors C. 40 conductors D. 25 conductors

A. 30 conductors

According to the Code the minimum insulation level for neutral conductor of residential installation which have solidly grounded system shall be A. 300 V B. 600 V C. 750 V D. 1,000 V

A. 300 V

The point of attachment of the service drop conductors to a building or other structure shall NOT be less _______ than above finished grade. A. 3100 mm B. 2800 mm C. 3000 mm D. 3500 mm

A. 3100 mm

What is the minimum vertical clearance for service drop conductors (not over 600 volts) above finished grade or sidewalks accessible only to pedestrians? A. 3100 mm B. 3700 mm C. 4600 mm D. 5500 mm

A. 3100 mm

If the project is extensive and requires more time for checking and for computation of fees, the issuance of the electrical permit need not be issued immediately but the delay shall not be longer than how many working days? A. 5 B. 4 C. 3 D. 6

A. 5

What is the minimum insulation resistance of a building's electrical wiring for circuits using 2.0 mm2 or 3.5 mm2 conductors? A. 500,000 ohms B. 250,000 ohms C. 1,000,000 Ohms D. 750,000 ohms

A. 500,000 ohms

What is the maximum operating temperature of type THWN conductor? A. 75 deg C B. 60 deg C C. 90 deg C D. 110 deg C

A. 75 deg C

A 15-A or a 20-A branch circuit shall be permitted to supply lighting units and other utilization devices. The rating of any one cord and plug connected appliance shall NOT exceed a certain percentage of the branch circuit rating. What is this percentage? A. 80 % B. 90 % C. 70 % D. 60 %

A. 80 %

The grounding electrode for grounding communications systems may be connected to the nearest accessible location on any of the following EXCEPT one. Which one is this? A. Buried interior PVC water piping system B. Grounding electrode conductor C. Building structure of a concrete building D. Grounding terminal of service equipment if provided by the utility company

A. Buried interior PVC water piping system

The equipment grounding conductor of a branch circuit shall be identified by what color? A. Green B. Black C. White D. Gray

A. Green

Cable trays shall NOT be used in which of the following applications? A. Hoistways B. Industrial establishments C. Dry locations D. All of these

A. Hoistways

The usual function of a disconnect switches in high voltage circuits is to A. Isolate from energized buses, equipment which are not in service B. open or close the circuit under load C. open the circuit in the event of an overload D. maintain continuity of service

A. Isolate from energized buses, equipment which are not in service

Wires or cables used in dry and wet locations for over 2000 volts insulation and ozone resistant with moisture and heat resistant rubber and has a maximum operating temperature of 90°C is ______ type. A. MI B. RHW C. THW D. THHN

A. MI

AC equipment on board watercraft shall operate satisfactorily at the following voltage limitations. Which one is correct? A. Minus 5% to plus 10% B. Minus 6% to plus 10% C. Minus 10% to plus 6% D. Minus 10% to plus 10%

A. Minus 5% to plus 10%

When removing insulation from the wire before making the splice, care should be taken to avoid nicking the wire (slightly cutting into the wire) because of one of the following. Which one is this? A. the wire might break B. the ampacity will be reduced C. the wire tinning (protective coating) will be injured D. the resistance will increase

A. the wire might break

In general, layout of motors and power outlets not exceeding a total of _____ maybe included in the lighting layout provided such inclusion will not make the reading, interpretation and or checking of the said plan difficult. A. 8 B. 10 C. 12 D. 6

B. 10

If there will be six or more 2-wire branch circuits for a one family dwelling unit, how much is the minimum service entrance capacity required? A. 60 A B. 100 A C. 90 A D. 120 A

B. 100 A

Branch Circuit conductors supplying a single motor shall have an ampacity in terms of the full load current of NOT less than A. 100% B. 125% C. 130% D. 115%

B. 125%

If the service conductors are aluminum of copper-clad aluminum, what is the minimum size Permitted? A. 8.0 mm2 B. 14.0 mm2 C. 5.5 mm2 D. 3.5 mm2

B. 14.0 mm2

What is the minimum size of aluminum or copper clad aluminum conductors, used as service entrance conductors? A. 8.0 mm2 B. 14.0 mm2 C. 5.5 mm2 D. 3.5 mm2

B. 14.0 mm2

Branch lighting circuits shall be protected by overcurrent devices not rated more than A. 40 A B. 20 A C. 30 A D. 50 A

B. 20 A

Where receptacles are connected to a 30-A branch circuit, the maximum allowable cord and plug connected load shall not be more than A. 30 A B. 24 A C. 16 A D. 20 A

B. 24 A

When testing the insulation integrity of a new or old electrical wiring installation circuit of 5.5 mm2 conductors, the Code specifies a minimum insulation resistance of what value? A. 1,000,000 ohms B. 250,000 ohms C. 500,000 ohms D. 100,000 ohms

B. 250,000 ohms

According to the PEC, the minimum insulation level for neutral conductors of residential installations, which have solidly grounded system, shall NOT be less than this voltage. which one is this? A. 1,000 volts B. 300 volts C. 600 volts D. 750 volts

B. 300 volts

Give the minimum vertical clearance from finished grade of a service drop conductor Installed between buildings on residential properties and driveways? A 5,500 mm B. 4,600 mm C. 3,700 mm D. 3,100 mm

B. 4,600 mm

What is the maximum allowable voltage drop from the main circuit breaker to the farthest lamp load? A. 10 percent B. 5 percent C. 2 percent D. 3 percent

B. 5 percent

As a general rule, equipment rated 1,200 A or more measuring more than 1,900 mm wide containing overcurrent devices, shall have an entrance at both ends of the switchboard room. The width and height of each entrance shall be NOT less than the following dimensions. Which one is correct? A. 800 mm Wide x 2000 mm high B. 600 mm wide x 2000 mm high C. 600 mm wide x 2200 mm high D. 800 mm wide x 2200 mm high

B. 600 mm wide x 2000 mm high

When circuit breakers are instated in enclosed switchboards, they are usually derated to a certain percentage. What is this percentage? A. 60 % B. 80 % C. 50 % D. 70 %

B. 80 %

A three-phase general purpose squirrel cage motor draws a full toad current of 40 A. What is the maximum size of time delay fuses that may to used for short circuit protection? A. 120 A B. 80 A C. 40 A D. 100A

B. 80 A

Who shall make the final decision in the interpretation of controversial provisions of the Philippine Electrical Code? A. IIEE Board of Governors B. Board of Electrical Engineering C. Building Official D. IIEE Code Committee

B. Board of Electrical Engineering

The Circuit conductors between the service entrance equipment or isolated generating plant and the branch circuit overload device or devices. A. Overcurrent protector B. Feeder C. Motor controller D. Disconnecting switch

B. Feeder

Wirings allowed to be installed outside buildings are enumerated below EXCEPT one. Which one is this? A. Type MC cable B. Flat conductor cable C. Rigid metal conduit D. Open wires on Insulators

B. Flat conductor cable

Which type of temperature detector is used in motor windings? A. Capacitance B. Resistance C. Inductance D. Reluctance

B. Resistance

Communication conductors shall NOT be attached to a cross-arm below electric light and power conductors under Art 10. 1.3.1 (a) (2). A. No one cares B. True C. False D. Allowed with approval from utility

B. True

Medium voltage cable shall be permitted for installation on the following EXCEPT one. Which one is this? A. Where installed in cable trays B. Where exposed to direct sunlight C. Power systems up to 35,000 volts in dry locations D. Power systems up to 35,000 volts in wet location

B. Where exposed to direct sunlight

Insulated ground conductor of 14 mm2 or smaller-shall be Identified by a continuous white outer finish along its entire length or another color which is ____ A. green B. natural gray C. striped green D. striped white

B. natural gray

Underground communication conductors in a raceway, handhole or manhole containing electric light and power conductors, shall be in a section ________ from such conductors by means of a separator (brick, concrete or tile) under Art 10.1.3.2 (a). A. combined B. separated C. included D. inside

B. separated

For voltages above 600 V, the minimum insulation resistance shall be A. 1,500,000 ohms per kV rating B. 500,000 ohms per kV ranting C. 1,000,000 ohms per kV rating D. 2,000,000 ohms per kV rating

C. 1,000,000 ohms per kV rating

To provide for small appliance load in a dwelling unit, the feeder should be computed at A. 2,400 volt-amperes B. 3,000 volt-amperes C. 1,500 volt-amperes D 3,600 volt-amperes

C. 1,500 volt-amperes

For dwelling units, the demand factor for the first 3000 volt-amperes of load is A. 95 % B. 85 % C. 100 % D. 80 %

C. 100 %

Where the voltage between conductors does not exceed 300 V and the roof has a slope of not less than 100 mm in 300 mm, the clearance can be reduced to A. 500 mm B. 800 mm C. 1000 mm D. 900 mm

C. 1000 mm

The branch circuit conductors that supply one or more units of data processing systems shall have an ampacity NOT less than ________ percent of the total connected load. A. 150 B. 100 C. 125 D. 200

C. 125

Supports of AC cable should have intervals NOT exceeding: A. 1000 mm B. 1500 mm C. 1300 mm D. 1400 mm

C. 1300 mm

In rigid metal conduit, the minimum electrical trade size is A. 25 mm B. 20 mm C. 15 mm D. 32 mm

C. 15 mm

In estimating the loading of a branch circuit, what loading shall be used for each receptacle? A. 160 volt-ampere B. 120 volt-ampere C. 180 volt-ampere D. 150 volt-ampere

C. 180 volt-ampere

Outlets installed in a dwelling unit for specific appliances, shall be installed within what distance of the intended location of the appliance? A. 2000 mm B. 1500 mm C. 1800 mm D. 2500 mm

C. 1800 mm

The unit lighting for a dwelling unit expressed in watts per square meter shall be A. 8 watts B. 40 watts C. 24 watts D. 16 watts

C. 24 watts

A continuous electrical load is one where the maximum current is expected to continue for a minimum duration of time. What is this minimum duration of time? A. 1 hour B. 4 hours C. 3 hours D. 2 hours

C. 3 hours

For installation consisting of not more than two 2-wire branch circuits, the service disconnecting mains shall be rated NOT less than what rating? A. 20 A B. 40 A C. 30 A D. 50 A

C. 30 A

For a rigid steel conduit of trade diameter 50-mm. the field bend shall be so made that the radius of the inner edge shall not be less than a certain radius for conductors without lead sheathed. What is this radius? A. 450 mm B. 250 mm C. 300 mm D. 375 mm

C. 300 mm

Service entrance cables shall be supported by straps or other approved means within ______ of every service head, gooseneck or connection to a raceway. A. 600 mm B. 500 mm C. 300 mm D. 760 mm

C. 300 mm

Determine the minimum appliance and laundry load required for a dwelling unit A. 4000 volt-amperes B. 1500 volt-amperes C. 3000 volt-amperes D. 2000 volt-amperes

C. 3000 volt-amperes

What is the minimum burial depth required for rigid non-metallic conduit approved for direct burial without concrete encasement? A. 500 mm B. 400 mm C. 460 mm D. 440 mm

C. 460 mm

What is the maximum number of overcurrent devices of a lighting and appliance panel board that shall be installed in a cabinet? A. 38 devices B. 24 devices C. 48 devices D. 52 devices

C. 48 devices

In dwelling units, when the actual number of receptacle outlets is not known, an additional load of______ volt-ampere per square meter shall be Included. A. 10 B. 4 C. 8 D. 6

C. 8

The total load on overcurrent device located in a panelboard shall NOT exceed a certain percentage of its rating. What is this percentage? A. 100 % B. 90% C. 80 % D. 125 %

C. 80 %

The circuit conductors between the final overcurrent device protecting the circuit and the outlets. A. Transmission line B. Transmission media C. Branch circuits D. Service wires

C. Branch circuits

A wiring method using knobs, tubes, and flexible non-metallic tubing for the protection and support of single insulated conductors concealed in hollow spaces of walls and ceilings of buildings. A .Open wiring on Insulators B. Open wiring with knobs, tubes, etc. C. Concealed knob and tube wiring D. Knob and tube wiring

C. Concealed knob and tube wiring

The use of rigid metal conduits shall be permitted under all atmospheric conditions subject to the following conditions EXCEPT one. Which one is this? A. Aluminum finings and enclosures shall be permitted to be used with rigid steel conduits. B. Ferrous metal conduits shall be permitted to be installed in concrete C. Conduits shall be permitted to be used in sand fill which is subject to permanent moisture D. Where the ferrous raceways are protected solely by enamel, the use is permitted only indoors

C. Conduits shall be permitted to be used in sand fill which is subject to permanent moisture

Which of the following raceways is NOT suitable for installation in wet locations? A. Rigid metal conduit B. Rigid non-metallic conduit C. Flexible metal conduit D. Intermediate metal conduit

C. Flexible metal conduit

The _______ or other descriptive marking by which the organization responsible for the product maybe identified, shall be placed on all electric equipment I. Trademark II. Cost III. Manufacturers name A I, II and III B. I and II only C. I and III only D. I only

C. I and III only

What is the exception in the advantages when comparing solid wires with stranded wires of the same cross section? A. It is larger in overall diameter B. It is better for high voltages C. It is easier to skin off the insulation D. It has a higher current rating

C. It is easier to skin off the insulation

Which or the following statements is NOT correct? A. Overcurrent devices shall be located where they will not be exposed to physical damage B. Overcurrent devices shall be readily accessible C. Overcurrent devices may be located inside clothes closets D. In a multi-family dwelling, each occupant shall have ready access to all overcurrent devices protecting his occupancy

C. Overcurrent devices may be located inside clothes closets

The underground service conductors between the street main, including any risers at the pole or other structure or from transformer and the first point of connection to the service entrance conductors in a terminal box. The point of connection is considered to be the point of entrance of the service conductors into the budding. A. Service entry B. Service raceway C. Service lateral D. Service drop

C. Service lateral

Busways shall be permitted to be installed behind panels if means of access are provided and if the conditions below are met. One of them is NOT valid. Which one is this? A. No overcurrent devices are Installed on the busway other than for an individual fixture B. The busway is so Installed that the joints between sections and fitting are accessible for maintenance purposes C. The busway is open and of the ventilator type D. The space behind the panels is not for air handling purposes

C. The busway is open and of the ventilator type

Conductors of AC and DC rated up to 600 V nominal shall be permitted to occupy the same equipment wiring enclosure, cable tray or raceway (pipes). Is this being allowed under Sec. 5.1.1.3 (c) (1) Art 5.1? A. Installation is correct B. False C. True D. Acceptable

C. True

The uses of non-metallic extensions are NOT allowed in all but one of the following. Which one is this? A. As an aerial cable B. Where exposed to corrosive vapors C. Where subject to corrosive vapors D. Through floors or partitions

C. Where subject to corrosive vapors

Which of the following colors identifies the grounded conductor of a branch circuit? A. Green B. Black C. White D. Blue

C. White

In all cases where there are energized parts on the front of the switchboards or motor control centers, the working space in front of such equipment shall NOT be less than a minimum distance. What is this distance? A. 2,000 mm B. 500 mm C. 1,500 mm D. 1 ,000 mm

D. 1 ,000 mm

If a 460-V switchboard has exposed parts on one side and grounded parts or concrete on the opposite side, what working clearance between the two sides is permitted by the Code? A. 500 mm B. 1,900 mm C. 1,500 mm D. 1,100mm

D. 1,100mm

The construction of metal cabinets and cutout boxes shall be such as to secure strength and rigidity. If constructed of uncoated sheet steel, the metal thickness should NOT be less than A. 1.55 mm B. 1.75 mm C. 1.00 mm D. 1.35 mm

D. 1.35 mm

The maximum size of liquid tight flexible metal conduct shall be _____ trade size. A. 50 mm B. 125 mm C. 150 mm D. 100 mm

D. 100 mm

What is the minimum horizontal clearance for open conductors from windows, doors, porches, fire escapes or similar locations? A. 1800 mm B. 1500 mm C. 1200 mm D. 1000 mm

D. 1000 mm

Service entrance conductors passing over roofs shall have a clearance over the roof which they pass of A. 1,000 mm B. 2,000 mm C. 1,500 mm D. 2,500 mm

D. 2,500 mm

The surge arrester for services less than 1000 volts connected by copper conductor to grounding electrode conductor or the equivalent grounding terminal shall NOT be smaller than ____ . A. 8.0 mm2 B. 5.5 mm2 C. 3.5 mm2 D. 2.0 mm2

D. 2.0 mm2

In the computation of the size of building wire, the PEC requires that at least a certain percent increase must be added. What percent is this? A. 20% B. 15% C. 50% D. 25%

D. 25%

Any unguarded metal sheathed service cable, service conduits, metal fixtures and similar non-current carrying parts, if located in urban districts and where liable to be charged to more than a certain voltage to ground shall be isolated or guarded so as not to be exposed to accidental contact by unauthorized persons. What is this voltage? A. 1,000 V B. 500 V C. 150 V D. 300 V

D. 300 V

In each conduit run entering an enclosure for switches, circuit breakers, relays and others that may produce high temperatures, seals on the conduit shall be installed within a certain length before entering the enclosure. What is this length? A. 900 mm B. 750 mm C. 250 mm D. 460 mm

D. 460 mm

When installing cables or raceway type wring method parallel to the framing members such joists, rafters or studs, the cable or raceway shall be installed and supported so that the nearest outside surface of the cable or raceway is NOT less than a certain distance from the nearest edge of the framing member. What is this distance? A. 20 mm B. 30 mm C. 10 mm D. 50 mm

D. 50 mm

The Code requires that all energized part of electrical equipment operating at _______ or more shall be guarded against accidental contacts by approved enclosures. What is this voltage? A. 24 volts B. 110 volts C. 230 volts D. 50 volts

D. 50 volts

Service entrance cables shall be supported by straps or other approved means at intervals NOT exceeding _____ . A. 600 mm B. 500 mm C. 300 mm D. 760 mm

D. 760 mm

The minimum size of service drop copper conductors allowed by the Philippine Electrical Code is one of the following. Which is this size? A. 3.5 mm2 B. 5.5 mm2 C. 2.0 mm2 D. 8.0 mm2

D. 8.0 mm2

Which of the following wiring cables is most suitable for shipboard installations? A. Flat cable assembly B. Shielded non-metallic sheathed cable C. Metal clad cable D. Armored cable

D. Armored cable

Connection between conductive or inductive metal object in an element of a lightning protection system to accomplish electrical continuity. A. Connectors B. Interlink C. Counterpoise D. Bonding

D. Bonding

How do you call the conductor encircling a building and interconnecting all ground terminals? A. Bonding B. Interlink C. Air terminal D. Counterpoise

D. Counterpoise

Type SE service-entrance cable shall be permitted in interior wiring systems where all of the circuit conductors of the cable are of the ______ type. I. Rubber-covered II. Thermoplastic III Metal A. I, II and lll B. II only C. II and III only D. I and II only

D. I and II only

What does the symbol consisting of rectangle with solid shading indicate? A. Fuse cut-out B. Telephone exchange C. Safety switch D. Lighting panelboard

D. Lighting panelboard

A point in a wiring system at which current is taken to be used in some equipment A. Grounded B. Conductor C. Service entrance D. Outlet

D. Outlet

A building or other structure served shall be supplied by only one service drop EXCEPT for A. multiple occupancy building B. fire pumps C. emergency electrical system D. all of these

D. all of these

According to its make, conduits maybe classified as A. rigid metal B. rigid nonmetal C. flexible metal D. all of these

D. all of these

Branch circuits are classified according to _____ A. voltage rating of the circuit B. number of loads connected C. type of loads connected D. maximum permitted ampere rating

D. maximum permitted ampere rating