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# MCQ in Philippine Electrical Code (PEC) Part 3 | REE Board Exam

This is the Multiple Choice Questions Part 3 of the Series in Philippine Electrical Code (PEC) as one of the Electrical Engineering topic. In Preparation for the REE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Exam Questions in Electrical Engineering field, Electrical Engineering Books, Journals and other Electrical Engineering References.

#### Continue Practice Exam Test Questions Part 3 of the Series

Choose the letter of the best answer in each questions.

101.ย  RME Board October 1995

Metal clad cables shall be permitted for installations in the following locations EXCEPT one. Which one is this?

A.ย  Signal circuits

B.ย  Branch circuits

C.ย  Direct burial in the earth

D.ย  Aerial cable

Solution:

102.ย  RME Board October 1996

Aย  15-Aย  orย  aย  20-Aย  branchย  circuitย  shallย  beย  permittedย  to supplyย  lightingย  unitsย  andย  otherย  utilizationย  devices.ย  The rating of any one cord and plug connected appliance shall NOTย  exceedย  aย  certainย  percentageย  ofย  theย  branchย  circuit rating. What is this percentage?

A.ย  80%

B.ย  90%

C.ย  70%

D.ย  60%

Solution:

103.ย  The bonding conductor used in agricultural buildings shall beย  copper,ย  insulated,ย  coveredย  orย  bare,ย  NOTย  smallerย  than ______.

A.ย  8.0 mmยฒ

B.ย  5.5 mmยฒ

C.ย  14.0 mm2

D.ย  3.5 mmยฒ

Solution:

104.ย  In any watercraft, the motor circuit shall have an ampacity ofย  NOTย  lessย  thanย  ____ย  ofย  theย  motorsย  fullย  loadย  current rating.

A.ย  125%

B.ย  100%

C.ย  115%

D.ย  130%

Solution:

105.ย  RME Board October 1994

The largest size of electric metallic tubing is

A.ย  75 mm

B.ย  125 mm

C.ย  150 mm

D.ย  100 mm

Solution:

106.ย  Theย  overloadย  relayย  usedย  toย  protectย  eachย  motor compressor set shall be selected to trip atย  NOT more than ____ of the motor-compressor rated load current.

A.ย  125%

B.ย  130%

C.ย  150%

D.ย  140%

Solution:

107.ย  RME Board October 1994

Lampย  protection shall be provided by elevation of at least ______ meters from the normal working surface.

A.ย  2

B.ย  1

C.ย  2.5

D.ย  3

Solution:

108.ย  Type UF cables shall NOT be used ______.

A.ย  as branch circuits

B.ย  as service entrance

C.ย  as direct burial to earth

D.ย  all of these

Solution:

109.ย  Whereย  โUโย  pullsย  areย  madeย  onย  theย  pullย  box,ย  theย  distance betweenย  eachย  racewayย  entryย  insideย  theย  boxย  andย  the opposite wall of the box shall NOT be less than ____ times the trade diameter of the largest raceway in a row.

A.ย  8

B.ย  7

C.ย  6

D.ย  5

Solution:

110.ย  Referenceย  ambientย  temperatureย  forย  explosionย  proof electrical equipment shall be ____ degree Celsius.

A.ย  30

B.ย  40

C.ย  50

D.ย  60

Solution:

111.ย  Weldingย  processย  whereinย  coalesceneย  isย  producedย  by heating with an electric arc with or without the application of pressure and with or without the use of filler metal.

A.ย  Resistance welding

B.ย  Spot welding

C.ย  Arc welding

D.ย  All of these

Solution:

112.ย  RME Board April 1995

The use of underground feeder cables may NOT be used inย  theย  followingย  conditionsย  EXCEPTย  one.ย  Whichย  oneย  is this?

A.ย  Embedded in concrete

B.ย  Hazardous location

C.ย  Direct burial

D.ย  Theaters

Solution:

113.ย  Faceย  platesย  ofย  insulatingย  materialsย  shallย  beย  noncombustible and less than ____ in thickness.

A.ย  2.5 mm

B.ย  1.5 mm

C.ย  2.0 mm

D.ย  3.0 mm

Solution:

114.ย  Conductorsย  supplyingย  twoย  orย  moreย  motorsย  shallย  haveย  an ampacity equal to the sum of the FLA rating of all motors plus ____ of the highest motor FLA in the group.

A.ย  30%

B.ย  15%

C.ย  20%

D.ย  25%

Solution:

115.ย  RME Board April 1995

Whichย  ofย  theย  followingย  colorsย  identifiesย  theย  grounded conductor of a branch circuit?

A.ย  Green

B.ย  Black

C.ย  White

D.ย  Blue

Solution:

116.ย  Anย  enclosureย  ofย  porcelainย  orย  otherย  insulatingย  materials fittingย  withย  terminalsย  andย  intendedย  forย  connectingย  the flexible chord carrying a pendant to the permanent wiring.

A.ย  Rosette

B.ย  Raceway

C.ย  Cable bus

D.ย  None of these

Solution:

117.ย  Receptacles installed for the attachment of portable cords shall be rates at NOT lest than ____ 250 V.

A.ย  20 A

B.ย  30 A

C.ย  10 A

D.ย  15 A

Solution:

118.ย  Motorsย  withย  markedย  serviceย  factor ofย  lessย  thanย  1.15 shall have an overload protection equal to ____ย  percent of the motorโs FLA.

A.ย  100

B.ย  125

C.ย  120

D.ย  115

Solution:

119.ย  Cablesย  andย  cordsย  suppliedย  throughย  pluggingย  boxesย  shall be of

A.ย  aluminum

B.ย  copper

C.ย  aluminum or copper

Solution:

120.ย  RME Board October 1995

Which of the following statement is NOT correct?

A.ย  Overcurrentย  devicesย  shallย  beย  locatedย  whereย  theyย  will

not be exposed to physical damage.

B.ย  Overcurrent devices shall be readily accessible.

C.ย  Overcurrentย  devicesย  maybeย  locatedย  insideย  clothes closets

D.ย  Inย  aย  multi-familyย  dwelling,ย  eachย  occupantย  shallย  have readyย  accessย  toย  allย  over-currentย  deviceย  protectingย  his occupancy.

Solution:

121.ย  Aย  conductorย  orย  groupย  ofย  conductors,ย  inย  switch-gear assemblies which serves as a common connection for two or more circuits.

A.ย  Bus

B.ย  Lug

C.ย  Cut-out

D.ย  Terminal Block

Solution:

122.ย  Theย  ampacityย  ofย  capacitorย  circuitย  conductorsย  shall notย  be less than ____ of the rated current of the capacitor.

A.ย  125%

B.ย  115%

C.ย  135%

D.ย  150%

Solution:

123.ย  Theย  alternateย  orย  Back-upย  sourceย  ofย  powerย  inย  aย  hospital shall have a capacity to sustain its connectedย  loads for a minimum of ______.

A.ย  1.5 hours

B.ย  2.0 hours

C.ย  1.0 hours

D.ย  2.5 hours

Solution:

124.ย  Cable trays shall NOT be used in ______.

A.ย  hoistways

B.ย  industrial establishments

C.ย  dry locations

D.ย  all of these

Solution:

125.ย  Theย  loadย  forย  theย  requiredย  branchย  circuitย  installedย  forย  the supplyย  ofย  exteriorย  signsย  orย  outlineย  lightingย  shallย  be computed at a minimum of ____ volt-amperes.

A.ย  1,000

B.ย  1,200

C.ย  1,500

D.ย  1,600

Solution:

126.ย  RME BOARD April 1996

The usual function of a disconnect switches in high voltage circuits is to

A.ย  isolateย  fromย  energizedย  buses,ย  equipmentย  whichย  are not in service

B.ย  open or close the circuit under load

C.ย  open the circuit in the event of an overload

D.ย  maintain continuity of service

Solution:

127.ย  Pendantย  conductorsย  whereย  notย  cabledย  andย  longerย  thanย  a certain length shall be twisted. What length is this?

A.ย  1,000 mm

B.ย  900 mm

C.ย  600 mm

D.ย  800 mm

Solution:

128.ย  The ampacity of the phase conductors from the generator terminals to the first overย  current device shall NOT be less thanย  ____ย  percentย  ofย  theย  nameplateย  currentย  ratingย  ofย  the generator.

A.ย  125

B.ย  110

C.ย  115

D.ย  120

Solution:

129.ย  RME Board October 1994

What is the maximum number of conductors permitted in a wirewayย  atย  anyย  cross-section,ย  signalย  circuitย  orย  starter-control wires are not included?

A.ย  30 conductors

B.ย  50 conductors

C.ย  40 conductors

D.ย  25 conductors

Solution:

130.ย  Each motor shall be provided with how many disconnects?

A.ย  Two

B.ย  Any number (optional requirement)

C.ย  Only one

D.ย  Not required by the PEC

Solution:

131.ย  Energizedย  partsย  ofย  aย  generatorย  operatedย  atย  moreย  then ______ย  volts to ground shall NOT be exposed to accidental contact where accessible t0 unqualified persons.

A.ย  50

B.ย  30

C.ย  48

D.ย  60

Solution:

132.ย  A hoisting and lowering mechanism equipped with a car or platform which moves in guides in a substantially vertical direction and which serves two or more floors of a building or structure.

A.ย  Dumbwaiter

B.ย  Escalator

C.ย  Elevator

D.ย  All of these

Solution:

133.ย  An assembly of a flexible cord with an attachment plugs on one end and a cord connector on the other.

A.ย  Extension cord

B.ย  Fixture cord

C.ย  Appliance cord

D.ย  None of these

Solution:

134.ย  Any box not over _____cmยณย  in size, intended for mounting inย  closedย  buildingย  constructionย  shall;ย  beย  affixedย  with anchorsย  orย  clampsย  asย  toย  provideย  aย  rigidย  andย  secure installation.

A.ย  1,540

B.ย  1,760

C.ย  1,800

D.ย  1,640

Solution:

135.ย  Inย  batteryย  roomsย  with alkalineย  batteries,ย  theย  shelves shall be lined with steel sheet NOT less than _____ thick.

A.ย  70 mm

B.ย  60 mm

C.ย  65 mm

D.ย  75 mm

Solution:

136.ย  Aย  disruptiveย  dischargeย  aroundย  orย  overย  theย  surfaceย  ofย  a solid or liquid insulator.

A.ย  Sparkover

B.ย  Corona

C.ย  Flashover

D.ย  Skin effect

Solution:

137.ย  Emergencyย  lightingย  ofย  ____ย  luxย  shallย  beย  providedย  inย  exit paths from all areas of attended stations.

A.ย  10

B.ย  20

C.ย  30

D.ย  15

Solution:

138.ย  RME Board April 1994

An overheated cord often indicates

A.ย  defective cord

B.ย  corroded terminals

C.ย  corroded terminals and detective cord

D.ย  none of these

Solution:

139.ย  Individualย  arresterย  groundingย  conductorsย  shallย  beย  no smaller than ____ copper.

A.ย  8.0 mmยฒ

B.ย  14 mmยฒ

C.ย  5.5 mmยฒ

D.ย  none of these

Solution:

140.ย  A generic term for an artificial source of light.

A.ย  Lumen

B.ย  Lux

C.ย  Candle

D.ย  Lamp

Solution:

141.ย  Cableย  busย  shallย  securelyย  supportedย  atย  intervalsย  NOT exceeding

A.ย  3,600 mm

B.ย  3,000 mm

C.ย  3,800 mm

D.ย  4,000 mm

Solution:

142.ย  Snapย  switchedย  usedย  withย  openย  wiringย  onย  insulatorsย  shall beย  mountedย  onย  insulatingย  materialย  thatย  separatesย  the conductors at least ____ from the surface wired over.

A.ย  12 mm

B.ย  10 mm

C.ย  11 mm

D.ย  13 mm

Solution:

143.ย  RME Board April 1996

Theย  usualย  nameplateย  dataย  onย  DCย  motorsย  includeย  the following EXCEPT one. Which one is this?

A.ย  Manufacturers name

B.ย  Rated frequency

C.ย  Rated voltage

D.ย  Rated speed

Solution:

144.ย  Verticalย  runsย  ofย  wirewaysย  shallย  beย  securelyย  supportedย  at intervals NOT exceeding ____.

A.ย  4,000 mm

B.ย  2,400 mm

C.ย  3,600 mm

D.ย  4,500 mm

Solution:

145.ย  Size 0.75 mmยฒ fixture wire has an ampacity of

A.ย  6 A

B.ย  10 A

C.ย  4 A

D.ย  8 A

Solution:

146.ย  Type MI cable shall NOT be used ____.

A.ย  in dry, wet or continuously moist locations

B.ย  where exposed to destructive corrosive locations

C.ย  for services, and feeders

D.ย  all of these

Solution:

147.ย  Eachย  receptacleย  forย  DCย  pluggingย  boxesย  shallย  beย  ratedย  at NOT less than _____.

A.ย  20 A

B.ย  30 A

C.ย  15 A

D.ย  40 A

Solution:

148.ย  RME Board October 1995

Insulated ground conductor of 14 mmยฒ or smaller shall be identifiesย  byย  aย  continuousย  whileย  outersย  alongย  itsย  entire length or another color which is

A.ย  green

B.ย  natural gray

C.ย  striped green

D.ย  striped white

Solution:

149.ย  Metalย  coversย  forย  boxesย  shallย  beย  linedย  firmlyย  attached insulating material not less than ____ in thickness.

A.ย  0.80 mm

B.ย  0.50 mm

C.ย  0.75 mm

D.ย  0.64 mm

Solution:

150.ย  Electrical non-metallic tubing shall NOT be used where the voltage is over

A.ย  500 V

B.ย  230 V

C.ย  300 V

D.ย  600 V

Solution:

#### Questions and Answers in Philippine Electrical Code

Following is the list of practice exam test questions in this brand new series:

MCQ in Philippine Electrical Code
PART 1: MCQ from Number 1 โ 50                Answer key: included
PART 2: MCQ from Number 51 โ 100            Answer key: included
PART 3: MCQ from Number 101 โ 150           Answer key: included
PART 4: MCQ from Number 151 โ 200           Answer key: included
PART 5: MCQ from Number 201 โ 250           Answer key: included
PART 6: MCQ from Number 251 โ 300           Answer key: included
PART 7: MCQ from Number 301 โ 350           Answer key: included
PART 8: MCQ from Number 351 โ 400            Answer key: included
PART 9: MCQ from Number 401 โ 450            Answer key: included
PART 10: MCQ from Number 451 โ 500          Answer key: included

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