The Philippine Electrical Code Selected Topics of Chapter 1

This Report focuses on Chapter 1 of The Philippine Electrical Code. Which focuses on the electrical safety standards for installation and maintenance.

2. CHAPTER ONE
•ARTICLE 1.0 –DEFINITIONS
Scope -This article contains only those
definitions essential to the proper
application of this Code. It is not
intended to include commonly defined
general terms or commonly defined
technical terms from related codes and
standards.

3. 1.0.1 General

4. AirTerminal(forlightingprotection)-Acombinationof
elevationrodandbrace,orfootingplacedonupperportionsof
structure,togetherwithtiporpointifused.

5. Ampacity-The current, in amperes, that a conductor can carry
continuously under the conditions of use without exceeding its
temperature rating.
Appliance-Utilization equipment, generally other than
industrial, normally built in standardized sizes or types, that is
installed or connected as a unit to perform one or more functions
such as clothes washing, air conditioning, food mixing, deep
frying, etc.
Appliance (Portable) -An appliance which can easily be moved
from one place to another in normal use.

6. Appliance Branch Circuit

7. Armor-Awrappingofgalvanizedinterlockingsteelstrip
forminganintegralpartoftheassemblyorcertaininsulated
cables,wires,orcords,whicharecapableofwithstandingcertain
mechanicaltests.

8. ArmoredCable-Acableprovidedwithawrappingormetal
usuallysteelwiresortapes,primarilyforthepurposeof
mechanicalprotection.

9. ArmoredCable(ininteriorwiring)-Afabricatedassemblyof
insulatedconductorsandaflexiblemetalliccovering.

10. Arrester(Surge)-Aprotectivedeviceforlimitingsurgevoltage
onequipmentbydischargingorbypassingsurgecurrent;it
preventscontinuedflowoffollowcurrenttogroundandis
capableofrepeatingthesefunctionsasspecified.

11. AttachmentPlug(PlugCap)-Adevicethat,byinsertionina
receptacle,establishesaconnectionbetweentheconductorsof
theattachedflexiblecordandtheconductorsconnected
permanentlytothereceptacle.

12. AuxiliaryGutter-Asheet-metalenclosureforconductors,
cablesandbusbarsatswitchboards,metercenters,distribution
centersandsimilarpoints.

13. Bare Conductor

14. Bonding(Bonded)-Thepermanentjoiningofmetallicpartsto
formanelectricallyconductivepaththatwillensureelectrical
continuityandthecapacitytoconductsafelyanycurrentlikelyto
beimposed.

15. BondingJumper-Areliableconductortoensuretherequired
electricalconductivitybetweenmetalpartsrequiredtobe
electricallyconnected.

16. BondingJumper(Main)-Theconnectionbetweenthe
groundedcircuitconductorandtheequipmentgrounding
conductorattheservice.

17. BranchCircuit-Thecircuitconductorsbetweenthefinalover
currentdeviceprotectingthecircuitandtheoutlet(s).

18. BranchCircuit(Appliance)-Abranchcircuitthatsupplies
energytooneormoreoutletstowhichappliancesaretobe
connected,andthathasnopermanentlyconnectedlighting
fixturesthatarenotapartofanappliance.

19. BranchCircuit(GeneralPurpose)-Abranchcircuitthat
suppliesanumberofoutletsforlightingandappliances.

20. BranchCircuit(Multiwire)-Abranchcircuitthatconsistsof
twoormoreungroundedconductorsthathaveapotential
differencebetweenthem,andagroundedconductorthathas
equalpotentialdifferencebetweenitandeachungrounded
conductorofthecircuitandthatisconnectedtotheneutralor
groundedconductorofthesystem.

21. Bus-Aconductor,agroupofconductors,inswitchgear
assemblieswhichservesasacommonconnectionfortwoor
morecircuits.

22. CircuitBreaker-Adevicedesignedtoopenandcloseacircuit
bynonautomaticmeansandtoopenthecircuitautomaticallyona
predeterminedovercurrentwithoutdamagetoitselfwhen
properlyappliedwithinitsrating.

23. Adjustable (as applied to circuit breakers)
•Aqualifyingtermindicatingthatthecircuitbreakercanbeset
totripatvariousvaluesofcurrent,time,orboth,withina
predeterminedrange

24. Instantaneous Trip (as applied to circuit breakers)
•Aqualifyingtermindicatingthatnodelayispurposely
introducedinthetrippingactionofthecircuitbreaker.

25. Inverse Time (as applied to circuit breakers)
•Aqualifyingtermindicatingthatthereispurposelyintroduced
adelayinthetrippingactionofthecircuitbreaker,which
delaydecreasesasthemagnitudeofthecurrentincreases.

26. Nonadjustable (as applied to circuit breakers)
•A qualifying term indicating that the circuit breaker does not
have any adjustment to alter the value of current at which it
will trip or the time required for its operation.

27. Conductor
Bare. A conductor having no covering or electrical insulation
whatsoever.
Covered. A conductor encased within material of composition or
thickness that is not recognized by this Code as electrical
insulation.
Insulated. A conductor encased within material of composition
and thickness that is recognized by this Code as electrical
insulation.

28. ConduitBody-Aseparateportionofaconduitortubingsystem
thatprovidesaccessthrougharemovablecover(s)totheinterior
ofthesystematajunctionoftwoormoresectionsofthesystem
orataterminalpointofthesystem.
BoxessuchasFSandFDorlargercastorsheetmetalboxesare
notclassifiedasconduitbodies.

29. Connector,Pressure(Solderless)-Adevicethatestablishesa
connectionbetweentwoormoreconductorsorbetweenoneor
moreconductorsandaterminalbymeansofmechanicalpressure
andwithouttheuseofsolder.

30. Controller-Adeviceorgroupofdevicesthatservestogovern,
insomepredeterminedmanner,theelectricpowerdeliveredto
theapparatustowhichitisconnected.

31. Copper-CladAluminumConductors-Conductorsdrawnfrom
acopper-cladaluminumrodwiththecoppermetallurgically
bondedtoanaluminumcore.Thecopperformsaminimumof10
percentofthecross-sectionalareaofasolidconductororeach
strandofastrandedconductor.

32. CutoutBox-Anenclosuredesignedforsurfacemountingthat
hasswingingdoorsorcoverssecureddirectlytoandtelescoping
withthewallsoftheboxproper.

33. Duct-A single enclosure raceway for conductor or cables.

34. ElectricalMetallicTubing-Metalpipeintowhichelectric
wiresmaybedrawnandwhichhasawallthinnerthanthatof
rigidconduitwithanoutsidediametersuffiencydifferentfrom
thatofrigidconduittorenderitimpracticableforanyoneto
threaditwithstandardpipethread.

35. Electric Motor-A machine which transform electric power into
mechanical power.

36. Feeder-Allcircuitconductorsbetweentheserviceequipment,
thesourceofaseparatelyderivedsystem,orotherpowersupply
sourceandthefinalbranch-circuitovercurrentdevice.

37. Festoon Lighting-A string of outdoor lights that is suspended
between two points.

38. Flame-Retardant-So constructed or treated that it will not
readily burn or convey flame.

39. Flexible Conduit -Non-rigid metal conduit into which conductors
may be drawn.

40. FlexibleTubing-Nonmetallicandnon-rigidtubing,commonly
knownas“Loom”,throughwhichaconductormaybedrawn.

41. Fuse-Anovercurrentprotectivedevicewithacircuit-opening
fusiblememberwhichisheatedandseveredbythepassageof
overcurrentthroughit.

42. General-Purpose Branch Circuit

43. GroundedCircuit-Acircuitinwhichoneconductororpoint
(usuallytheneutralconductororneutralpointoftransformeror
generatorwinding)isintentionallygrounded,eithersolidlyor
throughagroundingdevice.

44. Grounded Conductor-A system or circuit conductor that is
intentionally grounded.

45. GroundingElectrodeConductor-Theconductorusedto
connectthegroundingelectrodetotheequipmentgrounding
conductor,tothegroundedconductor,ortoboth,ofthecircuitat
theserviceequipmentoratthesourceofaseparatelyderived
system.

46. Ground-FaultCircuitInterrupter-Adeviceintendedforthe
protectionofpersonnelthatfunctionstode-energizeacircuitor
portionthereofwithinanestablishedperiodoftimewhena
currenttogroundexceedssomepredeterminedvaluethatisless
thanthatrequiredtooperatetheovercurrentprotectivedeviceof
thesupplycircuit.

47. InsulatedConductor-Separatedfromotherconductingsurfaces
byadielectricpermanentlyofferingahighresistancetothe
passageofcurrentandtodisruptivedischarge.

48. JunctionBox-Aboxwithablankcoverwhichservesthe
purposeofjoiningdifferentrunsofracewayorcable,and
providedwithsufficientspaceforconnectionandbranchingof
theenclosedconductors.

49. KnifeSwitch-Aformofairswitchinwhichthemoving
elementisahingedbladewedgedbetweenstationarycontact
bladeswhenclosed.

50. LightingOutlet-Anoutletintendedforthedirectconnectionof
alampholder,alightingfixture,orapendantcordterminatingin
alampholder.

51. Mast-Acolumnpole,ornarrowbasestructureofwood,steel,or
othermaterial,supportingoverheadconductors,usuallybemeans
ofarmsorbrackets.

52. Metal-Clad-Soconstructedthattheconductingpartsare
entirelyenclosedinametalcasingorenclosure.

53. MotorControlCenter-Anassemblyofoneormoreenclosed
sectionshavingacommonpowerbusandprincipallycontaining
motorcontrolunits.

54. NonincendiveCircuit-Acircuit,otherthanfieldwiring,in
whichanyarcorthermaleffectproducedunderintended
operatingconditionsoftheequipment,isnotcapable,under
specifiedtestconditions,ofignitingtheflammablegas–,vapor–,
ordust–airmixture.

55. NonincendiveFieldWiring-Wiringthatentersorleavesan
equipmentenclosureand,undernormaloperatingconditionsof
theequipment,isnotcapable,duetoarcingorthermaleffects,of
ignitingtheflammablegas–,vapor–,ordust–airmixture.Normal
operationincludesopening,shorting,orgroundingthefield
wiring.

56. Panelboard-Asinglepanelorgroupofpanelunitsdesignedfor
assemblyintheformofasinglepanel;includingbuses,
automaticovercurrentdevices,andequippedwithorwithout
switchesforthecontroloflight,heat,orpowercircuits;designed
tobeplacedinacabinetorcutoutboxplacedinoragainstawall
orpartitionandaccessibleonlyfromthefront.

57. Pendant-Adeviceorequipmentwhichissuspendedfrom
overheadeitherbymeansoftheflexiblecordcarryingthecurrent
orotherwise.

58. Plenum-Acompartmentorchambertowhichoneormoreair
ductsareconnectedandthatformspartoftheairdistribution
system.

59. PullBox-Aboxwithablankcoverwhichisinsertedinoneor
morerunsorracewaytofacilitatepullingintheconductors,and
mayalsoservethepurposeofdistributingtheconductors.

60. Raceway-Anenclosedchannelofmetalornonmetallicmaterialsdesigned
expresslyforholdingwires,cables,orbusbars,withadditionalfunctionsas
permittedinthisCode.Racewaysinclude,butarenotlimitedto,rigidmetal
conduit,rigidnonmetallicconduit,intermediatemetalconduit,liquidtight
flexibleconduit,flexiblemetallictubing,flexiblemetalconduit,electrical
nonmetallictubing,electricalmetallictubing,underfloorraceways,cellular
concretefloorraceways,cellularmetalfloorraceways,surfaceraceways,
wireways,andbusways.

61. Reactor-Adeviceusedforthepurposeofminimizing
irregularitiesintheflowofweldingcurrents.

62. Receptacle-Areceptacleisacontactdeviceinstalledatthe
outletfortheconnectionofanattachmentplug.Asingle
receptacleisasinglecontactdevicewithnoothercontactdevice
onthesameyoke.Amultiplereceptacleistwoormorecontact
devicesonthesameyoke.

63. Remote-Control Circuit-Any electric circuit that controls any
other circuit through a relay or an equivalent device.

64. Rigid Metal Conduit-A raceway specially constructed for the
purpose of the pulling in or the withdrawing of wires or cables
after the conduit is in place and made of metal pipe of standard
weight and thickness permitting the cutting of standard threads.

65. SeparatelyDerivedSystem-Apremiseswiringsystemwhose
powerisderivedfromabattery,asolarphotovoltaicsystem,or
fromagenerator,transformer,orconverterwindings,andthathas
nodirectelectricalconnection,includingasolidlyconnected
groundedcircuitconductor,tosupplyconductorsoriginatingin
anothersystem.

66. Service Conductors-The conductors from the service point to
the service disconnecting means

67. Service-EntranceConductors,OverheadSystem-Theservice
conductorsbetweentheterminalsoftheserviceequipmentanda
pointusuallyoutsidethebuilding,clearofbuildingwalls,where
joinedbytaporsplicetotheservicedrop.

68. SignalingCircuit-Anyelectriccircuitthatenergizessignaling
equipment.

69. SolarPhotovoltaicSystem-Thetotalcomponentsand
subsystemsthat,incombination,convertsolarenergyinto
electricalenergysuitableforconnectiontoautilizationload.

70. StrainInsulator-Asingleinsulator,aninsulatorstring,ortwo
ormorestringparallel,designedtotransmittothetowerorother
supporttheentirepulloftheconductorsandtoinsulateit
therefrom.

71. Switchboard-Alargesinglepanel,frame,orassemblyofpanels
onwhicharemounted,onthefaceorback,orboth,switches,
overcurrentandotherprotectivedevices,buses,andusually
instruments.Switchboardsaregenerallyaccessiblefromtherear
aswellasfromthefrontandarenotintendedtobeinstalledin
cabinets.

72. Switchgear-Ageneraltermcoveringanassemblyorassemblies
ofdevicesfortheinterruption,control,meteringofelectric
power.

73. UnitSubstation-Consistsprimarily,ofoneormore
transformersmechanicallyandelectricallyconnectedand
coordinatedindesignandconstructionwithoneormore
switchgear,ormotorcontrol,assembliesorcombinationthereof.

74. ARTICLE 1.2 –PERMITS AND
INSPECTION CERTIFICATES

75. 1.2.1 Electrical Permits
•1.2.1.1ElectricalPermitNeededBeforeWorkisStarted
Beforestartinganyinstallationwork,alternation,repairorextensionon
anyelectricalsystem,theowners,lessors,operator,occupants,or
electricalpractitionersshallobtainElectricalPermitforBuilding,
Trailers,mobilehomes,orotherpremisesfromtheOfficeoftheLocal
BuildingOfficial,andforwatercraftsfromtheMaritimeIndustry
Authority(Marina).

76. 1.2.1.2 Requirement for Electrical Permit
•Signaturesandsubmittals:
a.ApplicationforElectricalPermit(DPWHFormNo.96-001-E).
1.Dulyqualifiedelectricalpractitioner.
2.ProfessionalElectricalEngineerwhosignedandsealedelectrical
plansandspecifications.
3.Dulyregisteredelectricalcontractor(withPCABLicense–
SpecialtyElectricalWorks).**PhilippineContractor
AccreditationBoard
4.Electricalpractitionerin-chargeofinstallation.
5.Owner/authorizedrepresentative.
b.Five(5)setsofcompleteelectricalplansandspecificationssigned
andsealedbyProfessionalElectricalEngineer.

77. 1.2.1.3 Electrical Permit to Be Issued Immediately
a.Theapplication,uponreceipt,shallbecheckedimmediatelybythe
localbuildingofficialsorhisrepresentativesforcompletewiththe
requirements.Ifcomplying,theElectricalPermitsshallbeissued
uponpaymentofthecorrespondingelectricalfees.
b.Iftheprojectisextensiveandrequiredmoretimeforcheckingandfor
computationsoffees,theissuanceoftheElectricalPermitneednotbe
issuedimmediately.Thedelayshallnotbelongerthanfive(5)
workingdaysafterwhichtimeapplicationtogetherwiththe
accompanyingplansshallbeconsideredascomplyingwithallthe
requirementandtheelectricalpermitshallbeissuedimmediately
thereafter.

78. 1.2.1.4 Posting of Electrical Permit
•AcopyoftheElectricalPermit(DPWHFormNo.96-002-E)shallbe
postedataconspicuouslocationatthejobsiteandshallnotberemoved
untilfinalinspectionandapprovaloftheworkshallhavebeenmade.

79. 1.2.2 Electrical Inspection
•1.2.2.1ApplicationforInspection
Anapplicationforinspectionshallbefiledwiththegovernment
authorityconcernedbeforeapreliminaryand/orfinalinspectionis
done.
•1.2.2.2CertificateofInspections
Noelectricalinstallation,alternation,and/oradditionshallbe
connectedorreconnectedtoanypowersupplyoranyothersourceof
electricalenergywithoutaCertificateofFinalElectrical
Inspection/Completion(DPWHFormNo.96-006-E)obtainedfrom
thegovernmentauthorityconcerned.

80. 1.2.3 Special
•1.2.3.1TemporaryInstallation
Fortemporaryelectricalinstallation,thesameprocedureasstated
aboveshallbefollowed.Attheendoftheperiodcoveredbythe
certificateofinspection,thetemporaryinstallationshallberemoved.
Extendeduseofthetemporaryinstallationshallrequireanewapproval
electricalpermit.
•1.2.3.2InstallationWithoutPermit
Installationofnotmorethantwo(2)additionallightingand
receptacle/convenienceoutletsforgeneralpurposemaybeinstalled
withoutelectricalpermitandcertificateoffinalelectrical
inspection/completion.

81. •1.2.3.3SpecialPermissionRequired
Electricalequipmentandwiringnotspecificallycoveredormentioned
inthevariousarticlesofthisCodeshallrequirespecialpermissionand
approvaloftheenforcinggovernmentauthorityconcerned,priorto
installation.
•1.2.3.4ReconnectionofDisconnectedServices
Reconnectionbytheutilitycompanyofelectricalenergyincases
whereservicehasbeencutofffornotmorethanone(1)yeardueto
non-paymentofelectricbills,serviceinterruptionduetoelectrical
fault,andtemporaryshutdown/maintenance,shallnotrequireanew
certificateoffinalelectricalinspection/completion,providedthatthere
isnoalterationonexistingelectricalconnectionandreconnection
shallbeatthediscretionoftheelectricutilitycompany.

82. ARTICLE 1.3 —ELECTRICAL
PLANS AND SPECIFICATIONS

83. 1.3.1 General
•1.3.1.1 Sheet Size
Electrical plans and drawings shall be drawn on sheets of the following
standard sizes:
760mmx1000mm
600mmx900mm
500mmx760mm
•1.3.1.2DrawingScale
Forfloor/deckandriser/profileplans,1:100scaleshallbeused.
(Othermetricscalesmaybeusedforconvenience)

84. 1.3.2 Plans and Specifications
•1.3.2.1 Plan Requirements
A.Location and Site Plans -Location and site plans, with proposed
structure and owner’s land drawn to appropriate metric scale shall
show:
i.Bordering areas showing public or well-known streets, landmarks
and/or structures which need not be drawn to scale unless they
extend into the area concerned;
ii.Location of service drop, service equipment and nearest pole of
the utility company furnishing electrical energy; location of the
meter as well as sizes of service entrance wires, conduits and
service equipment; and
iii.Clearance of the path or run of service drops and entrance wires
to adjacent existing and/or proposed structures.

85. B.LegendorSymbols.RefertoAppendixA–ElectricalSymbols.
C.GeneralNotesand/orSpecifications-GeneralNotesand/or
Specifications,writtenontheplansorsubmittedonseparatestandardsize
sheetsshallshow:
1.Natureofelectricalservice,includingnumberofphases,numberof
wires,voltageandfrequency:
2.Typeofwiring;
Serviceentrance
Feeders,sub-feedersandbranchcircuitwiresforlightingand/or
powerload
Firealarmsystem,ifrequiredbylaw
Signalingandcommunication

86. 3.Special equipment to be installed, indicating ratings and classification of
service or duty cycle of;
 Rectifiers
 Heaters
 X-ray apparatus
 Electric welding equipment
4.System or method of grounding.
5.Type and rating of main disconnecting means, overcurrent protection
(OCP) and branch circuit wiring.
6.Clearances of service drop, burial depth for service lateral, mounting
height and clearance for service equipment, mounting height and
clearance for kW-Hr meter.
D.Electrical Layout. Floor plan showing location of equipment and devices,
and their interconnection wiring.

87. 1.PlanforPower.Layoutandwiringplansforpoweronthe
floorplansdrawntoscale,shallshow:
i.Sizesandlocationofserviceentranceconductors,raceways,metering
equipment,mainswitchboard,layoutoffeedersanddistributionpanels
orswitchesandtheirsizes,typesandratings.
ii.Completecircuitsofmotorsandotherelectricalequipment,their
controllingdevices,theirlocationsandratings.
iii.Completewiringofemergencypowersystem,ifany.
iv.Natureofprocesses/activitiescarriedoutineachroomorarea.

88. 2.PlanforLightingandReceptacleOutlets.Layoutandwiring
plansforgenerallightingandconvenienceoutletsonfloor
plansdrawntoscale,shallshow:
i.Location,typeandratingoflightingfixtures,indicatingilluminationin
luxineachroomorarea.Inresidences,hotels,apartmenthouses,and
churches,theilluminationlevelineachroomorareaneednotbeshown
norcomputed.
ii.Locationofswitchesforeachfixturesorgroupoffixtures.
iii.Locationofreceptacleoutletsandappliancestobeservedandtheir
ratings.
iv.Completecircuitsofthelightingandconvenienceoutlets.
v.Completewiringofemergencylightingsystem,ifany;
vi.Aseparatedrawingshowinglayoutofreceptacleoutletsmaybemadeat
thediscretionofthedesignengineer.

89. 3.PlanforFireAlarmCircuits.Layoutandwiringplansoffire
alarmstation,firealarmbell,firealarmcontrolpanel,and
othershallbedrawntoscaleandshow:
i.Location of outlets, equipment and/or apparatus and controls.
ii.Complete circuit showing no. and size of raceway and wire.
•Schedule of Loads -Schedule of load in tabulated form shall indicate:
1.Motor Loads
 Motors as numbered or identified in power layout
 Type of motor
 Horsepower/kilowatt/kilovolt ampere rating
 Voltage rating
 Full-load current rating
 Frequency rating other than 60 hertz
 Number of phases
 Type and size of wiring
 Protective device rating

90. 2.Lighting and Convenience Receptacle Loads.
Panel as numbered in the feeder diagram
Circuit designation number
Number of lighting outlets in each circuit
Number of switches in each circuit
Number of receptacles (convenience outlets)
Voltage of circuit
Type and size of wiring
Protective device rating

91. 3. Other Loads
Designation number on plan
Description of load
Classification of service duty, if required
Rating of kilovolt-ampere or kilowatt
Phase loading indicating full load line current
Voltage rating
Type and size of wiring
Protective device rating

92. •Design Analysis. Design analysis shall be included on the drawings or
shall be submitted on separate sheets of standard size, and shall show:
1.Branch circuits, sub-feeders, feeders, busways, and service, entrance .
2.Types, ratings, and trip settings of overload protective devices;
3.Calculation of short circuit current for determining the interrupting
capacity of overurrent protection device;
4.Calculation of voltage drops.

93. •One Line Diagram. One line diagram shall indicate:
1.Lighting and Receptacle Outlet Loads;
a.Single line or schematics diagram of lighting and receptacles
panelboards showing mains and branch circuit rating;
b.Size of conductors for feeders.
2.Motor Loads
a.Rating in kilowatts/horsepower/kilovolt ampere
b.Full load current
c.Locked rotor current
d.Phase connection for 1-phase motor on a 3-phase system
e.Rated voltage
f.Type and size of wiring, indicating load in amperes
g.Electric motors shall be numbered consecutively to correspond to
their numbers in the layout

94. •FeedersandSubfeeders
a.Identificationand/orlabelingoffeedersandsubfeeders.
b.Sizeandtypeofwiresandraceway.
c.Protectivedevicesandcontrols.
d.Theallowableampacityoftheconductoroverthedesignedloadcurrentin
amperesexpressedasaratioandindicatedalongsidetheconductor.
•LoadCenter
a.Identificationand/orlabelingofloadcentershowingtypeandratingof
transformer,switches,circuitbreakerandotherrelateddevices.
b.Incomingandoutgoingfeeders,type,sizeandvoltage.
c.Equipmentgrounding.

95. 1.3.2.2TitleBlock-Titleblockornameplateofplansand
drawingshallbeastandardstripof40mmhighatthebottomof
thesheet.
Itshallcontainthefollowing:
a.Nameandlocationofinstallationorproject
b.Name,signatureandaddressofowner/manager/operator
c.Titleofsheet
d.Name,signatureandsealofProfessionalElectricalEngineertogether
withProfessionalRegulationCommissionprofessionallicense
numberandvalidity,ProfessionalTaxReceiptNumber,andTax
IdentificationNumber
e.Scaleused,datedrawn
f.Sheetnumber

96. 1.3.2.3 Other Details
a.Exposedconductorsshallshow:
Meansofsupportandtypesofinsulators;and
Spacing'sandclearances.
b.Auxiliarygutters,wireways,busways,cabinets,boxes,metallic
raceways,undergroundinstallations,otherthanspecifiedintheCode
shallshow:
Installationdetails;
Conductorsupports,separators,andattachmentswhererequiredby
thisCode;and
Dimensionsanddescriptionorspecifications.

97. •Lowenergypowerandlowvoltagepowerinstallationshallshow:
a.Detailsofbatteryinstallationand/orothersourceoflowvoltageorlow
energypower.
b.Equipment,wiring,actuatingmechanismandprotectivedevices.
c.Ventilationdetailswhenevernecessary.
1.3.3SubstationPlansandSpecifications
•1.3.3.1IndoorSubstation.Indoorsubstationplansshallshow:
a.Locationanddimensionsof:
1.Substationinbuildingplandrawntoscale,
2.Buildingwithrespecttoentirecompoundorproperty,
3.Incomingandoutgoinglines,and
4.Windows,doors,andotheropenings.

98. •Substation structural requirements
1.Materials and construction of walls, floors, roof, windows, enclosures,
doors, and their dimensions .
2.Ventilation and drainage systems and other safeguards.
•Substation electrical requirements
1.Plan view showing location and sizes of equipment installed,
2.Clearances and spacing's between exposed current-carrying and
noncurrent-carrying portions and grounding equipment.
3.Grounding system.

99. •Cross sectional views showing
1.Horizontal and vertical clearances between exposed parts and adjacent
surfaces.
2.Horizontal and vertical clearances of exposed parts from floor/ceiling.
3.Finished floor level and ground level.
•Miscellaneous
1.Specification of equipment
2.Wiring of lighting and remote control systems,
3.One-line diagram(s) of entire installation with voltage indicated,
4.Computations on size of wires, busbar, transformer, fuses, switches
and breaker, and
5.Class of insulation or insulators.

100. 1.3.3.2 Outdoor Substation
•Outdoor substation plans shall show same items as indoor substation
except that in lieu of walls and roof, details of fence and supporting
steel structure shall be shown in accordance with the latest edition of
the Philippine Electrical Code, Part 2.

101. ARTICLE 1.10 ⎯REQUIREMENTS
FOR
ELECTRICAL INSTALLATIONS

102. 1.10.1 General
•1.10.1.2Approval.Theconductorsandequipmentrequiredorpermitted
bythisCodeshallbeacceptableonlyifapproved.
•1.10.1.3 Examination, Identification, Installation, and Use of
Equipment.
A.Examination-In judging equipment, considerations such as the
following shall be evaluated:
1.Suitability for installation and use in conformity with the
provisions of this Code.
2.Mechanical strength and durability, including, for parts designed to
enclose and protect other equipment, the adequacy of the
protection thus provided.
3.Wire-bending and connection space.

103. 4.Electrical insulation.
5.Heatingeffectsundernormalconditionsofuseandalsounder
abnormalconditionslikelytoariseinservice.
6.Classificationbytype,size,voltage,currentcapacity,andspecific
use.
7.Otherfactorsthatcontributetothepracticalsafeguardingofpersons
usingorlikelytocomeincontactwiththeequipment.

104. B.InstallationandUse-Listedorlabeledequipmentshallbeinstalledand
usedinaccordancewithanyinstructionsincludedinthelistingor
labeling.
1.10.1.4Voltages.ThroughoutthisCode,thevoltageconsideredshallbethat
atwhichthecircuitoperates.Thevoltageratingofelectricalequipment
shallnotbelessthanthenominalvoltageofacircuittowhichitis
connected.
1.10.1.5Conductors.Conductorsnormallyusedtocarrycurrentshallbeof
copperunlessotherwiseprovidedinthisCode.Wheretheconductor
materialisnotspecified,thematerialandthesizesgiveninthisCode
shallapplytocopperconductors.Whereothermaterialsareused,thesize
shallbechangedaccordingly.

105. 1.10.1.6ConductorSizes.Conductorsizesareexpressedinsquare
millimetres(mm
2
)forstrandedorinmillimetresdiameter(mmdia.)for
solid.
1.10.1.7InsulationIntegrity.Completedwiringinstallationsshallbefree
fromshortcircuitsandfromgroundsotherthanasrequiredorpermittedin
Article2.50.
1.10.1.8WiringMethods.Onlywiringmethodsrecognizedassuitableare
includedinthisCode.Therecognizedmethodsofwiringshallbepermitted
tobeinstalledinanytypeofbuildingoroccupancy,exceptasotherwise
providedinthisCode.
1.10.1.9InterruptingRating.Equipmentintendedtointerruptcurrentatfault
levelsshallhaveaninterruptingratingsufficientforthenominalcircuit
voltageandthecurrentthatisavailableatthelineterminalsofthe
equipment.

106. 1.10.1.10CircuitImpedanceandOtherCharacteristics.Theovercurrent
protectivedevices,thetotalimpedance,thecomponentshort-circuitcurrent
ratings,andothercharacteristicsofthecircuittobeprotectedshallbe
selectedandcoordinatedtopermitthecircuit-protectivedevicesusedto
clearafaulttodosowithoutextensivedamagetotheelectricalcomponents
ofthecircuit.
1.10.1.11DeterioratingAgents.Unlessidentifiedforuseintheoperating
environment,noconductorsorequipmentshallbelocatedindamporwet
locations;whereexposedtogases,fumes,vapors,liquids,orotheragents
thathaveadeterioratingeffectontheconductorsorequipment;orwhere
exposedtoexcessivetemperatures.
1.10.1.18ArcingParts.Partsofelectricequipment,whichinordinary
operationproducearcs,sparks,flames,ormoltenmetal,shallbeenclosed
orseparatedandisolatedfromallcombustiblematerial.

107. 1.10.1.21Marking.Themanufacturer’sname,trademark,orotherdescriptive
markingbywhichtheorganizationresponsiblefortheproductcanbe
identifiedshallbeplacedonallelectricequipment.Othermarkingsthat
indicatevoltage,current,wattage,orotherratingsshallbeprovidedas
specifiedelsewhereinthisCode.Themarkingshallbeofsufficient
durabilitytowithstandtheenvironmentinvolved.
1.10.1.22IdentificationofDisconnectingMeans.Eachdisconnectingmeans
requiredbythisCodeformotorsandappliances,andeachservice,feeder,
orbranchcircuitatthepointwhereitoriginates,shallbelegiblymarkedto
indicateitspurposeunlesslocatedandarrangedsothepurposeisevident.
Themarkingshallbeofsufficientdurabilitytowithstandtheenvironment
involved.

108. End