SUPERBOOK PT.1 - 101-200

c. two

A One family or Two family dwelling unit requires a minimum of ____ GFCI receptacle(s) located outdoors. a. zero b. one c. two d. three

a. 0%

A balanced 120,240 volt, single phase, 3 wire circuit is connected so the ungrounded conductors are from different transformer phases (Line 1 and Line 2). The current on the grounded (neutral) conductor will be ____ of the ungrounded conductor. a. 0% b. 70% c. 80% d. 100%

a. straight

A circuit breakers with a ____ voltage rating, e.g. 240 volt or 480 volt, can be used where the nominal voltage between any two conductors does not exceed the circuit breaker's voltage rating. a. straight b. slash c. high d. low

c. ground fault circuit interrupter

A device intended for the protection of personnel that functions to de-energize a circuit within an established period of time when a current to ground exceeds some predetermined value less than the required to operate the overcurrent protection device of the supply circuit is a(n) ____. a. dual element fuse b. inverse time circuit breaker c. ground fault circuit interrupter d. safety switch

b. Pendant

A device or equipment which is suspended from overhead either by means of a flexible cord carrying the current, or otherwise. a. Rosette b. Pendant c. Fixture d. Air

c. 6 feet

A laundry outlet must be within feet of laundry (washing machine). a. 3m b. 4 m c. 6 feet d. 10 feet

a. two

A minimum of ____20 A small appliance branch circuits is required for receptacle outlets in kitchen, dining room, breakfast room, pantry, or similar dining areas. a. two b. one c. three d. none of these

d. Thermal protector

A protective device for assembly as an integral part of a motor or motor compressor and which when properly applied protects the motor against dangerous overheating due to overload and failure to start. a. Fault current b. Ground current c. Thermal current d. Thermal protector

d. none of the above

A system or circuit conductor that is intentionally grounded is a (n)____ . This conductor is often called a neutral conductor in the field, and it is identified with the color white or gray. a. grounding conductor b. unidentified conductor c. grounded conductor d. none of the above

a. 0 amperes

A three phase 4 wire multi wire branch circuit has 20 ampere on each 120 volt phase. The neutral conductor could carry as much as ____. a. 0 amperes b. 10 amperes c. 15 amperes d. 40 amperes

b. device

A unit of an electrical system which is intended to carry but not utilize electric energy a. wire b. device c. outlet d. utilization equipment

d. expansion bolts

An outlet box should be fastened to a concrete wall by the use of ____. a. wood plug and nail b. Toggle bolts c. porcelain insert and screw d. expansion bolts

b. False

An overload may be caused by a short circuit or ground fault. a. True b. False

a. 1,800 mm

Appliance outlets installed in a dwelling unit for specific appliances, such as laundry equipment, shall be installed within____ of the intended location of the appliance. a. 1,800 mm b. 1,500 mm c. 2,000 mm d. 1,000 mm

b. grounded

Because of the dangers associated with the open neutral (grounded conductor), the continuity of the ____ conductor cannot be dependent on the receptacle. a. ungrounded b. grounded c. a and b d. none of these

d. 35

Ceiling fans that do not exceed ____ pounds in weight, with or without accessories, must be supported by outlet boxes identified for such use and supported in accordance with sections.... a. 20 b. 25 c. 30 d. 35

a. open

Circuit breakers shall____ all ungrounded conductors of the circuit. a. open b. close c. protect d. inhibit

d. 600 mm

Circuits with rigid non-metallic conduit approved for direct burial and placed under streets, hiways, roads, alleys, driveways and parking lots shall have a minimum cover distance of ____. a. 760 mm b . 900 mm c. 1,000 mm d. 600 mm

b. Easily ignitable fibers flying

Class III locations are those that are hazardous because of the presence of ____. a. Combustible dust b. Easily ignitable fibers flying c. Flammable gases or vapors d. Flammable liquids or gases

a. 2,500 mm

Conductors passing over roof surface, a vertical clearance of ____ shall be maintained. a. 2,500 mm b. 1,500 mm c. 2,000 mm d. 3,000 mm

d. Stranded wire

Considered a group of wire twisted to form a metallic string. a. Duplex wire b. Loop wire c. Solid wire d. Stranded wire

a. 1,500

Each dwelling-unit shall have a feeder load consisting of ____ VA for the 20-ampere laundry circuit. a. 1,500 b. 2,000 c. 3,000 d. 4,500

d. the prevailing conditions

Each service disconnecting means shall be suitable for ____. a. Hazardous locations b. disconnecting the service c. protection of persons d. the prevailing conditions

c. Accessible, readily

Electrical wiring and equipment that is capable of being reached quickly for operation, renewal, or inspections without resorting to portable ladders and such is known as ____. a. Accessible (equipment) b. Accessible (wiring methods) c. Accessible, readily d. All of these

b. first aid

Employees shall familiarize themselves with approved methods of ____ rescue techniques and fire extinguishment. a. playing b. first aid c. wiring d. heating

c. warning signs and signals

Employees shall read ____and warn others who are in danger near energized equipment or lines a. First aid equipment and materials 3 b. manhole and vaults c. warning signs and signals d. body belts and safety straps

b. 3

Equipment for installation in hazardous locations must be tested and approved for use according to the classification of the hazards involved. These are divided into ____ groups. a. 4 b. 3 c. 7 d. 6

b. labelled

Equipment or materials to which a symbol or other identifying marks acceptable to the authority having jurisdiction. has been attached is known as ____. a. listed b. labelled c. approved d. rated

d. 30 A

For an ambient temperature of 30°C, a THW insulated copper conductor with a cross sectional area of 3.5 mm² and buried underground has the following ampacity. Which one is correct? a. 20 A b. 40A c. 15A d. 30 A

d. evenly space high ceiling

For better illumination you would provide ____. a. joint lights b. even spacing numerous lights c. random spacing lights d. evenly space high ceiling

d. 100%

For non-dwelling receptacle loads, the demand factor for the first 10 KVA or less shall be ____. a. 60% b. 70% c. 80% d. 100%

d. 28

For office buildings, a general lighting load of ____ VA/m2 shall be used. a. 12 b. 16 c. 24 d. 28

a. service entrance

For services exceeding 600 volts, nominal, cable tray systems shall be permitted to support cables identified as ____ conductors. a. service entrance b. overcurrent protection c. two wire circuit d. three wire circuit

c. Watts

Generator is rated in ____. a. VA b. kW c. Watts d. KVA

d. 3,100 mm

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

a. Class III, Division I

Hazardous locations in which easily ignitable fibers or material producing combustible flyings are handled, manufactured or used. a. Class III, Division I b. Class III, Division 2 c. Class I, Division I d. Class I, Division 2

b. He asks to repeat and clarify the instruction

If an electrician does not understand the instruction that were given by the supervisor, which of the following is best for him to do? a. He works out the solution himself b. He asks to repeat and clarify the instruction c. He gets one of the electrician to do the job d. He does the job the way he thinks best

d. 250 mm

If there are three wires of 150mm² connected to one terminal entering a cabinet or a switchboard, the bending space at each terminal shall NOT be less than ____ provided the conductors do not enter or leave the enclosure through the wall opposite its terminal. a. 200 mm b. 300 mm c. 400 mm d. 250 mm

c. 76 mm

In concealed knob and tube wiring, the clearance to be maintained between conductors is ____. a. 55 mm b. 45 mm c. 76 mm d. 50 mm

b. 1,800 mm

In every kitchen, family room, dining room, living room, parlor, library, bedroom or similar rooms or area of dwelling units, receptacle outlets shall be installed so that no point along the floor line in any wall space is more than measured horizontally from an outlet in that space. a. 2,000 mm b. 1,800 mm c. 1,900 mm d. 2,100 mm

c. ampacities

In general, conductors other than flexible cords and fixture wires shall be protected against overcurrent in accordance with their ____as specified in Section. a. rating b. markings c. ampacities d. listings

b. 600 mm

In hazardous location, the use of non-metallic conduit shall be permitted provided it is buried NOT less than ____ below the earth level. a. 400 mm b. 600 mm c. 1,000 mm d. 500 mm

c. 3,000 mm

In rigid metal conduit wiring, conduits shall be supported at least every ____. a. 2,500 mm b. 3,500 mm c. 3,000 mm d. 2,000 mm

d. 3,000 mm

In rigid metal wiring conduit, conduit shall be supported at least every a. 2,000 mm b. 2,500 mm c. 3,500 mm d. 3,000 mm

d. 1,000 mm

In the 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

a. 3,100 mm

Individual open conductors and cables other than service entrance cables shall NOT be installed within ____ of grade level or where exposed to physical damage. a. 3,100 mm b. 3,700 mm c. 4,600 mm d. 5,500mm

c. cables

Metal enclosures used to provide support or protection of ____ from physical damage shall not be required to be grounded. a. conductors b. feeders c. cables d. none of these

d. Certificate of final electrical inspection

No electrical installation, alteration and or addition shall be connected or re-connected to any power supply or any other sources of electrical energy without ____. a. An electrical permit b. An application for inspection c. Certificate of payment d. Certificate of final electrical inspection

b. 4,600 mm

Open conductors passing over residential driveways and those commercial areas not subject to truck traffic where the voltage exceeds 300 V to ground shall have a vertical clearance ____ . a. 3,700 mm b. 4,600 mm c. 3,100 mm d. 5,500 mm

b. identified

Recognized as suitable for the specific purpose, function, use, environment and application. a. labelled b. identified c. listed d. approved

c. water

Service drop conductors and service entrance conductors shall be arranged so that ____ will not enter service raceway or equipment. a. moisture b. condensation c. water d. a and c

c. 14 mm²

Sizes of building wires manufactured in the Philippines are standardized in square millimeters. What is the area of copper conductor, which is next larger than 8 square millimeters? a. 12 mm² b. 10 mm² c. 14 mm² d . 9 mm²

d. junction boxes

Splices and taps shall be made only in ____. a. pull boxes b. panelboards c. cut out boxes d. junction boxes

b. Expansion bolt

Terminal Electrical equipment may best be mounted on a concrete wall by using one of the following. Which one is this? a. Wooden plug b. Expansion bolt c. Load plug d. plastic plug

b. branch circuit rating

The ____ shall not be less than the non-continuous load plus 125% of the continuous load. a. conductor size b. branch circuit rating c. non-continuous load d. continuous load

d. 30°C

The allowable ampacities of conductors rated from 0 to 2,000 volts, 60°C to 90°C and not more than three of them (16 kg) in raceway, cable or earth is based on an ambient temperature of ____. a. 35°C b. 40°C c. 25°C d. 30°C

a. 5,000 VA

The branch circuit load for drying equipment is the larger of either the VA rating of the nameplate or ____. a. 5,000 VA b. 6,000 VA c. 4,000 VA d. 3,000 VA

d. an enclosure

The case or housing of apparatus or the fence of the surrounding an installations to prevent accidental contact of person to energized parts is called ____. a. guarded b. covered c. protection d. an enclosure

a. 1,000 mm

The clearance from the top of the switchboard to a ceiling shall NOT be less than ____. a. 1,000 mm b. 800 mm c. 900 mm d. 1,250 mm

d. 50 Volts

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 the voltage? a. 24 Volts b. 110 Volts c. 230Volts d. 50 Volts

a. ampacity

The current in amperes a conductor can carry continuously under the conditions of use without exceeding its temperature rating. a. ampacity b. capacity c. rating d. amperage

d. 100%

The current on the grounded (neutral) conductor of a 2-wire circuit will be ____ of the current on the ungrounded conductor. a. 50% b. 70% c. 80% d. 100%

b. damp

The environment of a wiring method under the eave of a house with a roof open porch would be considered a ____. a. dry b. damp c. wet d. moist

d. Any of these

The equipment grounding conductor shall be identified by ____. a. A continuous outer green finish b. Being bare c. A continuous outer green finish with one or more yellow stripes d. Any of these

b. Single solid conductor

The following copper conductors have the same cross sectional area but are made up of different number of strands. Which one has the least resistance to Ac current? a. 19 strand conductor b. Single solid conductor c. 7 strand conductor d. 37 strand

a. Buried interior PVC water piping system

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

a. interrupting rating

The highest current at rated voltage that a device is intended to interrupt under standard test conditions is the ____. a. interrupting rating b. manufacturer's rating c. interrupting capacity d. GFCI rating

b. steel

The inner strand of ACSR is made of ____. a. brass b. steel c. copper d. lead

a. shall

The lightning protection system grounding electrode ____ be bonded to the building grounding electrode system. a. shall b. shall not c. can d. none of these

c. 10 ft

The minimum clearance of service drop over sidewalks. a. 8 ft b. 14 ft c. 10 ft d. 12 ft

d. service point

The point of connection between the facilities of the serving utility and the premises wiring. a. load center b. service head c. junction box d. service point

b. 125%

The primary winding of a step down transformer shall be protected on the primary side by an overcurrent device rated NOT more than a certain percentage of the primary current. Which is this percentage? a. 110% b. 125% c. 80% d. 150%

b. readily accessible

The service disconnecting means shall be ____. a. accessible b. readily accessible c. outdoors d. indoors

c. 24 watts

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

d. Armored cable

This type of cable is a fabricated assembly of insulated conductors enclosed in a flexible metal sheath. a. Ground wire b. Integrated gas spacer cable c. Medium voltage cable d. Armored cable

d. Use a hack saw and ream the ends

To cut rigid metal conduits, an electrician should do one of the following. Which one is this? a. Order it cut to size from the supplier b. Use a three-wheel pipe cutter c. Use a cold chisel and ream the ends d. Use a hack saw and ream the ends

c. 1,500 watts

To provide for small appliance load in a dwelling unit, the feeder should be computed at ____. a. 2,400 watts b. 3,000 watts c. 1,500 watts d. 3,600 watts

b. 300 mm

Transformer exceeding 112.5 KVA shall not be located within ____ from combustible materials of the building. .a. 400 mm b. 300 mm c. 200 mm d. 500 mm

d. kVA

Transformer is rated in ____. a. VA b. kW c. Watts d. kVA

d. Operation at loads and for intervals of time, both of which may be subjected to wide variations

Varying duty is defined as____. a. Intermediate operation in which the load conditions are regularly recurrent b. Operation at substantially constant load for an indefinite length of time c. Operation for alternate intervals of load and rest, or load, no load, and rest d. Operation at loads and for intervals of time, both of which may be subjected to wide variations

b. 230 volts ac

What is the nominal supply voltage specified by the Philippine Electrical Code for residential home? a. 225 volts ac b. 230 volts ac c. 240 volts ac d. 220 volts ac

b. 80%

When a circuit breaker is installed in enclosed switchboards, they are usually derated to a certain percentage. What is this percentage? a. 60% b. 80% c. 50% d. 70%

d. skin effect

When alternating current flows through a conductor, there is an inductive action that causes the current in the conductor to be forced toward the outer surface. The current is greater at the surface that at the center of the conductor, this ____ will cause the resistance in the conductor to increase due to the increased heating of the conductor. a. superconductive effect b. capacitive effect c. outer effect d. skin effect

b. VA of the equipment and lamps

When determining the load for recessed lighting fixtures for branch circuits, the load shall be based on the ____. a. Wattage rating of the fixture b. VA of the equipment and lamps c. Wattage rating of the lamps d. none of these

a. identified

When raceway type service masts are used, all raceway fittings shall be ____ for use with service masts a. identified b. approved c. heavy duty d. listed

d. All of these

When the term exposed is used by the Code it refers to ____. a. Capable of being inadvertently touched or approached nearer than a safe distance by a person b. Parts that are not suitably guarded, isolated, or insulated c. Wiring on, or attached to, the surface or behind panels being designed to allow access d. All of these

a. one

Where Two to Six service disconnecting means is separate enclosures are grouped at one location and supply separate loads from one service drop or lateral ____ set(s) of service entrance conductors shall be permitted to supply each at several such as service equipment enclosures. a. one b. two c. three d. four

b. 300%

Where circuit breakers are used to protect the primary side of a transformer over 600 V nominal, their continuous current rating shall NOT exceed ____ of the rated primary current. a. 250% b. 300% c. 175% d. 200%

b. the weather

Where individual open conductors are exposed to____, the conductors shall be mounted on the Insulating supports attached to racks, brackets, or other approved means. a. a corrosive environment b. the weather c. the general public d. any inspector

c. drip loops

Where individual open conductors enter a building or other structure through tubes, ____ shall be formed on the conductors before they are enter the tubes. a. drop loops b. knots c. drip loops d. none of these

b. One additional electrode must be added

Where the resistance to ground of a single made electrode exceeds 25 ohms,____. a. Additional electrodes must be added until the resistance to ground is less than 25 ohms b. One additional electrode must be added c. No additional electrodes are required d. The electrode can be omitted

a. switch

Which of the following does the Code recognize as a device? a. switch b. switch and light bulb c. lock nut and switch d. lock nut and bushing

c. May be used to protect internal circuits of equipment

Which of the following statements about supplementary overcurrent protection is correct? a. Shall not used in lighting fixtures. b. May be used as substitute for a branch circuit overcurrent protection c. May be used to protect internal circuits of equipment d. Shall be readily accessible.

b. Flat conductor cable

Wirings allowed to be installed outside the buildings are enumerated below EXCEPT one. a. Type MC cable b. Flat conductor cable c. Rigid metal conduit d. Open wires on Insulators