Sheet1P L U M B I N GTYPE OF VENTSBRANCH VENTA vent connecting one or more individual vents with a vent stack or stack ventCIRCUIT VENTA branch vent that serves two or more traps and extends from in front of the last fixtureconnection of a horizontal branch to the vent stackCOMMON VENTA vent connecting at the junction of two fixture drains and serving as a vent for both fixturesA single vent that ventiliates multiple traps, in the case of back to back fixtureCONTINOUS VENTA vertical vent that is the continuation of the drain to which the vents connectDRY VENTA vent that does not serve as drain and is located where if is not exposed to back upof waste from a drainage pipeDUAL VENTSee common ventGROUP VENTA branch vents that performs its functions for two or more trapsINDIVIDUAL VENTA pipe installed to vent, a fixture trap and w/c connects with the vent system above the fixtureserved or terminates in the open airLOOP or CIRCUIT VENTA circuit vent which loop backs to connect with a stack vent instead of a vent stackAny vent connecting a horizontal branch or fixture drain with the stack vent of theoriginating waste or soil stackLOCAL VENTIs a pipe on the fixture side of the trap through which vapor or foul air is removedfrom a room fixtureMAIN VENTThe principal artery of the venting system to which vent branches may be connectedRELIEF VENTA vent installed so as to permit additional circulation of air between the drainage and ventsystems where the drainage systems might otherwise be air boundUNIT VENTAn arrangement of venting so installed that that one vent pipe will serve two trapsSTACK VENTThe extension of a soil or waste stack above the highest horizontal drain connected to thestack horizontal drain, the uppermost end above the roofWET VENTA vent which also serves as a drainYOKE VENTA pipe connecting upward from a soil or waste stack to a vent stack for the purpose ofpreventing pressure changes in the stackNATIONAL PLUMBING CODE OF THE PHILIPPINESBACKFLOWIs the flow of water or other liquids, mixtures or substances into the distributing pipes of asupply of water from any source other than its intended sourceBACK SIPHONAGEIs the backflow of used, contaminated or polluted water from a plumbingfixture due to negative pressureBATTERY OF FIXTURERefers to any group of two or more similar adjacent fixtures which discharge into a commonhorizontal waste or soil branchBLANK FLANGEA flange that is not drilledBLIND FLANGEA flange that closes the end of a pipe line used to discharge waterCAULKINGIs plugging an opening with oakum, lead or other materialsCOUPLINGA short internally threaded section of pipe, used to join two pipes of conduitsUNIONUsed to connect the two ends of two pipes, neither of which can be turnedNIPPLEA short length of pipe with threads at each end; used to join couplings or fittingsDEAD ENDIs the extended portion of a pipe that is closed at one end to which no connections are madeon the extended portionDEVELOPED LENGTHThe length along the center of the pipe and fittingDRAINAGE SYSTEMIncludes all piping within public or private which conveys sewage, rain water or often liquid wasteto a legal point of disposal but does not include the main of a public sewer system or private oror public sewerage treatmentFIXTURE BRANCHIs a pipe connecting several fixturesFLOOD LEVELIs a device located at the bottom of the tank for the purpose of flushing water closets andand similar fixtureFERRULEA metallic sleeve, join to an opening of pipe, into which a plug is screwedthat can be removed for the purpose of cleaningINVERTIs the lowest portion of the inside of any pipe or conduit that is not verticalPLUMBING SYSTEMIncludes water supply and distribution pipe; plumbing fixture and traps, soilwaste and vent pipes; house drain and house sewers including their respective connectionsROUGH INInstallation of all parts of the plumbing system which can be completed prior to the installationof fixturesSIAMESE CONNECTIONSA wye connections used on fire lines so that two lines of hose maybe connected to the hydrantor to the same nozzleSOIL PIPEIs any pipe which conveys the discharge of water closets of fixture havingsimilar function w/ or w/o the discharge of other fixtures to the building drainTRAP SEALIs the maximum vertical depth of liquid that a trap will retain measure between the crown weirand the top of the dip of the trapREVIEW CENTER (PLUMBING)WATER RESERVOIRInstall to be able to meet the water requirements during peak demands from a low yieldingwater wellSHOCK RELIEF AND EXPANSION CHAMBERThe device being used to eliminate the noise cause by water hammer50 FEET OR MOREThe location of water well to nearest septic vault2 PERCENTSlope of house sewer connected from the building to the main sewerCULVERTA passage under a road, embankment or canal which allow for the flow of waterBLACK WATERThe third kind of water after the storm water and area waterRECESSEDThe type of bathtub oher than sunken, square, free standingWHITEColor coding of high pressure steamBLACKColor coding for fuel oil divisionTRAP OR WATER SEALThe water column that seals the escape of unhealthy gases in the sanitary drainage system2.50 MService drop conductor clearance over the roofCOMPRESSION VALVEA valve which in the water flow is shut off by a flat disk that is screwed down onto its seatCISTERNAn underground tank reservoir to store waterOVERHEAD STORM DRAINAnother classification of storm drain, besides from inside drain and outside drainPRESSURE COCKTap used in high pressure water system with an interval valve to control the flow of waterPRESSURE REDUCING VALVEA valve which maintains uniform pressure on its outlet side regardless of its pressure fluctuationson the inlet side above the pressure levelUNION PATENTA pipe fitting within the interconnection of pipes for the purpose of easy dismantling ofthe connection when neededFLUSHOMETERA device that discharge a predetermined volume of water to fixture for flushing purposes andis activated by direct water pressureCORPORATION STOPAnother name for corporation cockAIR TRAPA U-shaped pipe filled with water and located beneath the plumbing fixturesto form a seal against the passages of gases and odorsABSORPTION TRENCHA trench containing course aggregate and a distribution tile pipe through which septic tankeffluent may flow covered with earthILLUMINATIONThe luminous flux density incident on a surfaceCATCH BASINAn underground structure for drainage into which water from the roof or floor will drain throughsewerWYE FITTINGA type of fitting for yoke bent1 1/2"Minimum discharge pipe and fitting for bath tub150mm DIAMETERMinimum size of building sewer; it should not be less than the building drainTRAP SIZES OF FIXTURES1 1/2"BATH FOOT2"BATH SHOWER STALL1 1/2"BATH SITZ1 1/2"BATH TUB1 1/2"BIDETS1 1/2"COMBINATION FIXTURE1 1/4"DRINKING FOUNTAIN2"FLOOR DRAIN1 1/4"FOUNTAIN CUPSIDERS1 1/2"LAUNDRY TRAYS1 1/2"SINKS (DISHWASHER)2'SINKS (HOTEL OR PUBLIC)1 1/2"SINKS (KITCHEN OR RESIDENCE)1 1/4"SINKS (SMALL PANTRY OR BAR)2"SLOP SINKS (ORDINARY)3"SLOP SINKS (WITH COMBINE TRAP)3"URINAL (PEDESTAL)1 1/2"URINALS (LIP)2"URINALS (STALL)2"URINALS (THROUGH)1 1/4"WASH BASIN (LAVATORIES)3"WATER CLOSETSTYPES OF WATER CLOSETSSIPHON-VORTEXQuiet, extermely sanitary. Like the siphon jet but having the flushing water directed through therim to create a vortex that scours the bowlSIPHON-JETSanitary, efficient very quiet. A toilet bowl into which the flushing water enters through the rim andsiphonic action initiated by a water jet draws the contents of the bowl through the trapwayREVERSE TRAPModerately noisy. Similar to siphon jet except that trap passageway and water surface areaare smallerWASH DOWNMinimum cost. Least efficient subject to clogging, noisy. Simple washout and emptying throughsmall irregular passageway, prohibited by some health codesBLOW OUTNoisy but highly efficient. Strong jet into leg forces contents outURINALSWALL HUNGTHROUGHPEDESTALSTALLBIDETA basin like fixture design to be struddled for bathing the genitals and posterior parts of the bodyGI PIPE SIZES1/2", 3/4", 1", 1 1/4", 1 1/2", 2, 2 1/2", 3", 4", 6", 8", 10", 12"NOTES19.05mm or 3/4"No building supply pipe shall be less than WHAT size in diameter46 mm.Minimum height of Fire Service Connection from the grade/floor122mmMaximum height of Fire Service Connection from the grade/floor61 mm.Minimum height of Dry Standpipe Outlet from the floor line122 mmMaximum height of Dry Standpipe Outlet from the floor line5 FEETConsidered extension of bulding drain outside the building wall1/4" BEND ?Fitting for base or soil stack and building drain51mm or 2"Wet standpipe for a riser not more than 15m64mm or 2 1/2"Wet standpipe for riser more than 15m4"Dry standpipe for a riser below 23m6"Dry standpipe for a riser more than 23mRATIO OF 1:25Ratio of water closets for female population for elementary and secondary schoolRATIO OF 1:30Ratio of water closets for male population for elementary and secondary schoolRATIO OF 1:75Ratio of urinals for elementary schoolsRATIO OF 1:75Ratio of water closets for female population for principal worship placesRATIO OF 1:5Ratio of lavatory to number of occupants4 CLOSETSMinimum number of water closet required for female office and public buildings3 HEADSMinimum head of water required in section of plumbing for water testM E C H A N I C A LAIR CONDITIONERAn apparatus that can heat, cool, clean and circulate airBUGLARS AND PROWLERSThey were deter to the intrusion alarm system in residential signal systemAIR DUCTAn air passage usually formed in sheet metal with insulation for ventilating on a buildingDRAUGHT OR DRAFTThe current of air or gases4 STOREYRequirement for a dry standpipeBLACKColor coding of piping for fuel oil divisionDUMBWAITERA hoisting and lowering mechanism with a building equipped with relatively small carexcusively for carrying materialsHUMIDIFIERThe device for maintaining desirable humidity conditons in the air supplied50 GALS.The average consumption of water per capitaTHERMOSTATAn automatic control of the operation of heating or cooling device responding to changes oftemperature of the spaceBULLDOZERA tractor equipped with the blade attached by arms and bolted to its end, used in piling earthACOUSTICAL LAY IN PANELThe acoustical ceiling board design to be laid in an exposed grid suspension systemDECIBELThe total sound units provided by a given material135-197 FHeat rating for a fixed temperature heat detectorREAR OR TOPFire tube boliers shall be provide with sufficient room for removal or replacement of tubeeither from these placesSOUND ABSORPTIONThe process of dissipating sound energy by converting it to heatSOUND INSULATIONThe system of deadening sound materials to wall, ceiling, floors to prevent sound from passingthrough the members into adjoining roomLUXThe illuminance produce by luminous flux of the one lumen distributed uniformly over a onesquare meter surfaceWATER TABLELevel of subterrenean waterAIR HANDLING UNITPackage assembly of air conditioning components which provides for the treatment of the airbefore it is distributed to an air conditioned spaceTRAVEL TIMEThis is the criteria in selection of an elevator other than interval and average waiting timeCONCRETE CASINGProtection of PVC pipe undergroundCREEPReflection of sound from curve surfaceELEVATORTRAVEL TIMEThe criteria in the selection of an elevator other than interval and average waiting timeFREIGHT ELEVATORType of conveyor that transport packages equipment cratesBUFFERImportant element of an elevator below the first level floor line that absorbs and minimizebuilding shocks to the carPITThat portion of the hoistway in the elevator extending from the threshold level of the lowest landingfloor of the hoistwayWINDING DRUM MACHINEA geared drive machine in which the suspension ropes are fastened to and wind on a drumGUIDE RAILSVertical tracks that serves as a guide for the car and the counterweight600mmCar pit clearance depth from the bottom of the carFOR REPAIR AND INSPECTIONWhen machine room or penthouse is provided at the top of the hoistway, it shall havea sufficient room for this2 HOISTWAYSWhen 4 or more elevator serve all or the same portion of the bulding4 ELEVATORSShalll be located in any one hoistway3 HOISTWAYSMinimum number of hoisting ropes for traction elevators2 HOISTWAYSMinimum number of hoisting ropes for drum type elevators30mmMinimum diameter of hoisting and counterweight ropesOVER LOAD RELAY AND REVERSE POLARITY RELAYProvision for all elevatorsBUFFERA safety device of a passenger elevator which reduces the collision shock of a car orcounterweight due to over travel beyond the lowest stop. It stops the car or counterweight safelyMONITORING CONTACTS ON STEP CHAINInternal electronic safety features of an escalator. They function as asafety switches or detectors which monitors internal mechanical orelectrical abnormalities and shuts down the system in any eventualityCIRCUIT BREAKERA passenger elevator safety device which protects the motor and itselectrical parts from over currentOUTSIDE DOOR LATCHDuring elevator emergency to rescue passenger, this type of elevator is used to open the doorfrom the outsideSAFETY SHOEThe elevator door components that detect the obstacle during the door closing and re opensthe doorWAIT INTERVALDividing the travel length by the rated speedDOOR LOCK SWITCHActivate by preventing the door to open during elevator car run,the door elevator will open only when the car stops at the floorMAGNETIC BREAKActivate if the car travel faster than its travel speed, the power will turn off,and grasp the rope to operate the safety gearFOR CAR OVERRUNMain purpose of shafts overhead spaceGOVERNORSafety device of a passenger elevator which activates if the car travels fasterthan its rated speed by grasping the guide rail to stop the car safelyA European brand of elevatorOTIS-U.S.BUFFERA safety device of a passenger elevator which reduces the collision shock of a car orcounterweight due to over travel beyond the lowest stop. It stops the car or counterweight safelyMONITORING CONTACTS ON STEP CHAINInternal electronic safety features of an escalator. They function as asafety switches or detectors which monitors internal mechanical orelectrical abnormalities and shuts down the system in any eventualityCIRCUIT BREAKERA passenger elevator safety device which protects the motor and itselectrical parts from over currentOUTSIDE DOOR LATCHDuring elevator emergency to rescue passenger, this type of elevator is used to open the doorfrom the outsideSAFETY SHOEThe elevator door components that detect the obstacle during the door closing and re opensthe doorWAIT INTERVALDividing the travel length by the rated speedDOOR LOCK SWITCHActivate by preventing the door to open during elevator car run,the door elevator will open only when the car stops at the floorMAGNETIC BREAKActivate if the car travel faster than its travel speed, the power will turn off,and grasp the rope to operate the safety gearFOR CAR OVERRUNMain purpose of shafts overhead spaceLIMIT SWITCHDevice that open and closes the electric current in an elevator when it has reached thedesignated end of travel courseESCALATOR35 degreesMinimum angle of inclination of an escalator558 mmMinimum width of balustrade1.20 mMaximum width of balustrade330 mmMaximum width of the stepsTEMPERED TYPE GLASSKind of glass required in an escalator's balustrade38 mpmMaximum rated speed measured along the angle of inclinationBOILERSR.C CONCRETE OR MASONRYProvision for boiler rooms inside the building3.00 mts. FROM OUTSIDE WALLMinimum distance if the building is not made of fire resistive materials1 meterNo part of the boiler shall be closer to this from the wall5.00 mtsDistance of the smokestacks above the building within 50 mts. radius2 CHECK VALVESProvision between any feed pump and the boiler in addition to the regular shut-off valveNON RETURN OR SHUT OFF VALVEProvision when two or more boilers are connected in parallelONE SAFETY VALVEProvision of every boilerTWO SAFETY VALVEProvision for boilers having generating capacity exceeding 907 kg/hr15 DAYSNotification in writing in advance for boiler's inspectionREFRIGERATION AND AIR CONDITIONING68deg-74deg FTemperature and humidity of the air to be used for comfortable cooling2.30 meters ABOVE THE FLOORMinimum for refrigerant piping crossing a passageway in any buildingSTOP VALVESProvision of installation for refrigerant system containing more than 9 kgs.2.13 metersMinimum for window type AC installed on ground floorsPIPINGGALVANIZED PIPINGIt should not be used for steamSTEAM DIVISIONWHITEHigh PressureBUFFExhaust FanWATER DIVISIONBLUEFresh Water, low pressureBLUEFresh Water, high pressureGREENSalt water pipingOIL DIVISIONBRASS OR BRONZEDeliveryYELLOWDischargeGRAYPNEUMATIC DIVISIONBLACKGAS DIVISIONBLACKFUEL OIL DIVISIONBLACKREFRIGERATING DIVISIONE L E C T R I C A LCIRCUIT BREAKERThe part of the cut out that is design to open or break an electrical current under anexcessive loadWATTSUnit of powerAMPEREThe unit used in the measure of the rate of flow of electricityOBSERVATION STANDSThis is where an electric service conductor can be installedTOWER OR FLATFORMKNIFE SWITCHA type of electric switch consisting of one or more movable copper blades which are hingedand which make contact with stationary forked contract jaws being forced between themTRANSFORMER VAULTProvision for building with an expected electric load demand of 200KVARECTIFIERThe conversion of alternating current (AC) to direct current (DC)RAPID START FLOURESCENT LAMPA kind of flourescent lamp that does not use starter elementJUNCTION BOXAn iron box or casing by which electrical conduit branches are formed5 STOREYSA passenger elevator with a constant 24 hour service for residential condominum3.00 mMinimum service drop of connection line above the ground and from the ground500 mmMinimum distance of poles and transformer support located from the road right of wayAIR CURTAINA vertical flow of air used to separate different function of spacesGOOSENECKOriginal name of P-TrapDISTRIBUTION LINEThe main feed line of an electrical circuit to which branch circuits are connected1.20mThe minimum width of door in hospital housing unitPLUG IN TYPEAnother type of circuit breaker element other than bolt-onCOPPER WIREThe most practical conductor of electricityRACEWAYA channel system in carrying electrical wireCABLE WIREAn electric conductor consisting of a group of smaller diameter conductor strands twistedtogetherDISTRIBUTION PANELAnother name for power panelTRANSFORMERA device used to convert voltage from higher to lower or vise versaNON FERROUS METALMetal containing no iron such as copper, brass and aluminum2.50mThe minimum allowance clearance from the highest point of the roof to the service dropconductor from NBCSTEP DOWN TRANSFORMERTo bring down voltageOPEN WIRINGWiring not concealed by the building sructureAUTOMATIC TRANSFER SWITCHTransferring the power load from the building circuitry to standby generator or during brownoutAIR SWITCHOne with contacts that separate in airARC VOLTAGEThe voltage across the welding arcARMORED CABLECable provided in wrapping of metal usually steel wires or tapes, primarily for the purposeof mechanical protectionASKARELA synthetic non-flammable insulating liquid which, when decomposed by an elctric arcevolves only non-explosive gasesASSEMBLYIs combination of all or a portion of component parts included in an electric apparatus,mounted on a supporting frame or panel and properly interwinedBASE LOADMinimum load over a given period of timeBRANCH CIRCUITThat portion of a wiring system extending beyond the final overcurrent device protectingthe currentBUSIs a conductor, or group of conductors, in switchgear assemblies which serves as a commonconnection for two or more circuitBUSWAYApproved assembly of insulated conductors with fitting and conductor terminations in acompletely enclosed, ventilated protective metal housing where the system is design to carryfault current and to withstand the magnetic forces of the currentCAGESystem of conductor forming an essentially continuous conducting network over the objectprotected and including any conductors necessary for interconnections of the object protectedand an adequate groundCIRCUIT BREAKERA device design to open under abnormal conditions a current carrying circuit without injuryitselfCONDUCTORA wire or combination of wires not insulated from one another suitable for carrying electriccurrentCONTROLLERA device or group of devices which serves to govern in some predetermined manner, theelectric power delivered to the apparatus to which it is connectedCORONAA luminous discharge due to ionization of the air surrounding a conductor caused by voltagegradient exceeding a certain critical valueCUT OUT BOXA metal housing that houses the circuit breaker or fuses; surface mountedDEMAND FACTORIs the ratio of the maximum demand of the system or part of the system to the total connectedload of the systemDEVICEA unit of electrical system which is intended to carry but not utilize electrical energyDUCTA single enclosed runway for conductor cablesELECTRIC MOTORMachine which transforms electric power into mechanical powerFEEDERSThe circuit conductors between the service equipment or the generator switchboard ofan isolated plant and the branch circuit overcurrent deviceFOOTCANDLEUnit of illumination when the foot is taken as the unit of length. It is the illumination on a surfaceone square foot in area in which there is uniformly distributed flux of one lumenFUSEAn overcurrent protective device with a circuit opening fusible member which is heated andsevered by the passage of the overcurrent through itGENERAL LIGHTINGTypes of lighting that deals with lighting relatively large area coveredILLUMINATIONDensity of the luminous flux on a surfaceKNIFE SWITCHIs a form of air switch in which the moving element is a hinge blade wedge betweenstationary contact blades when closedLAMPArtificial source of lightLAMPHOLDERDevice for mechanical support of lightLIGHTA radiant energyLIGHTNING ARRESTERProtective device for limitting surge voltage on equipment by discharging or by-passingsurge currentLIGHTNING SURGEIs a transient electric disturbance in an electric circuit caused by lightningLINE TAPIs the radial branch connection to a main lineLOAD FACTORIs the ratio of the average load over a designated period of time to the peak load occuringin that periodLUMENUnit of luminous fluxLUXA unit of illumination equal to one lumen per square meterOUTLETPoint of the wiring system at which current is taken to supply utilization equipmentOUTLET BOXA metal box at an outlet which encloses one or more receptaclePEAK LOADMaximum load consumed by a unit in a stated period of timePENDENTDevice or equipment which is supended from overhead either by means of the flexible cordPILOT WIREAuxillary conductor used in connection with remote measuring devices for operatingapparatus at a distant pointPULLBOXBox with a blank cover which is inserted in one or more runs of raceway to facilitatepulling in the conductors and the distributing of the conductorsRACEWAYAny channel for holding wires, cables or busbarsRECEPTACLEConvinience Outlet; Contact device installed at an oulet for the connection of an attachment plugRIGID METAL CONDUITA raceway especially constructed for the purpose of physical protectionof conductors, the pulling in or the withdrawing of wires or cables after theconduit is in place and made of metal pipe of standard width and thicknessROSETTEEnclosure of porcelain or other insulating material fitted with terminals and intended forconnecting the flexible cord carrying a pendent to permanent wiringSERVICE DROPThe overhead service conductor from the last pole or other aerial support to and including splicesif any connecting to the service entrance conductors at the buildingSERVICE RACEWAYThe raceway that encloses the service entrance conductorsSUBMARINE CABLECable designed for service under waterSURGEIs a transient variation in the current potential or power5.5 mm2Minimum wire size of THW stranded copper conductor in raceway for a branch circuit in a 30ampere ratingSI UNITHERTZUnit of frequency equal to one cycle per secondsPHONUnit of loudness of levelREVERBERATIONProlongation of sound as a result of succesive reflectionWAVELENGTHDistance sounds travels during each cycles of vibrationSOUND DIFFRACTIONAcoustical phenomenon which causes sound wave to bend or scattered aroundSOUNDFluctuation in pressure, a particle displaceent in elastic mediumPURE TONESound sensation in a single frequencyCANDELAA luminous intensity of light expressed in candela; Unit of luminous intensityLUMINAIREA lighting fixtureLAMBERTUnit of luminance equal to 1 candela per square meterLUXUnit of illmination equal to one lumen per square meterFOOT CANDLEUnit of illumination equal to one square footLUMINOUS FLUXRate of flow of light through a surfaceIMPEDANCEResistance in AC systemCONDUCTANCEReciprocal of resistanceSOUND INTENSITYRate of flow of sound energyACCENT LIGHTINGLighting used primarily to draw attention to particular point of interestsHPS LAMPA type of HID lampCONNECTIONSSINGLE PHASE TO SUPPLY 120 V LIGHTING LOADThis connetions is used where the load is comparatively small andthe length of the secondary circuit is shortSINGLE PHASE TO SUPPLY 120/240 3-WIRE LIGHTING AND POWER LOADThis connections is used in most urban distribution circuitsSINGLE PHASE FOR POWERThe 120/240 volt winding is connected in series serving 240 volts ona two wire system, this connection is used for small industrial applicationsTWO PHASE CONNECTIONSConsist merely of two single phase transformers operated 90deg outof phase, the common wire must carry /2 times the load currentDELTA-DELTA FOR POWER AND LIGHTINGThis is used to supply a single phase lighting load and three phasepower load simultaneouslyOPEN DELTA FOR LIGHTING AND POWERThis connection is used when single phase lighting load is large ascompared with the power loadY DELTA FOR POWEROften it is desirable to increase the voltage of a circuit form a 2400 to 4160 volts toincrease its potential capacityY DELTA FOR LIGHTING AND POWERThis connection is similar to the delta-delta bank with only the primary connection changedThe primary neutral should not be grounded or tied into the system neutral, since a singlephase ground fault may result in extensive blowing of fuses throughout the systemThis connection requires special watt-hour meteringOPEN Y DELTAWhen operating Y delta and one service is disabled, service maybe maintained at reduced loadDELTA Y FOR LIGHTING AND POWERThe single phase lighting load is all on one phase resulting in unblanced primary currentsin any one bankY-Y FOR LIGHTING AND POWERThe primary voltage was increased from 2400 to 4160 volts to increase the potentialcapacity of the systemY-Y AUTO TRANSFORMERWhen the ratio of transformation from the primary to secondary voltage is small,the most economical way of stepping down the voltageSCOTT CONNECTION 3PHASE TO 2PHASEIn some localities two phase power is required from three phase systemSCOTT CONNECTED 2PHASE TO 3PHASEIf it should be necessary to supply three phase power from a twophase system, the special tap must be provided on the secondary sideTThermoplasticTWMoisture Temperature ResistantUFUnderground FeederFEPWFlourinated Ethylene Propylene Moisture ResistantRHHeat Resitant RubberRHWHeat and Moisture Resistant RubberRUHHeat Resistant Latex RubberTHWMoisture and Heat Resistant ThermoplasticTHWNHeat and Moisture Resistant Thermoplstic with NylonXHHWMoisture and Heat Resistant Cross Link PolymerBXArmored CableTHHNTHERMOPLASTIC HEAT RESISTANTPEPOLYETHELENESASILICON ASBESTOSAVAASBESTOS AND VARNISH CAMBRICHEAT DETECTORFIXED TEMPERATUREUse low melting point solders or metal the expand when exposed to heat to detect fireHEAT DETECTOR135deg-197deg FPHOTO ELECTRIC DETECTORUse of the scattering of light by smoke into view of photo cell through incandescent or diodeINFRARED FLAME DETECTORIt responds to the high-frequency radiant energy from flames. Alarm is only triggered whenIR energy flickers at rate which is chracteristics of flameIONIZATION SMOKE HEATUses the interruption of small current flow between electrodes by smoke in ionized samplingDETECTORchamber to detect fireTYPES OF CABLEARMOR CABLE (AC)Fabricated assembly of insulated conductors enclosed in flexible metalsheath. It is used both on exposed and concealed workMETAL CLAD CABLE (MC)A factory assemble cable of one or more conductors each individualyinsulated and enclosed in a mettalic sheath of interlocking tape of smoothor corrugated tube. This type of cable is especially used for service feeders,branch circuit and for indoor, outdoor workMINERAL INSULATED CABLE (MI)Is a factory assembly of one or more conductors insulated with highlycompressed refractory mineral insulation enclosed in a liquid and gastight continous copper sheath. This type of cable is used in dry, wet orcontinously moist location as service feeders or branch circuitNON METALLIC SHEATED CABLE (NM)Is a also a factory assembly of two or more insulated conductors havinga moisture resistant, flame retardant and non metallic material outersheath. This type is used specifically for one or two family dwellings notexceeding 3 storey buildingSHIELDED NON METALLIC SHEATED CABLE (SNM)This type of cable is factory assembly of two or more insulated conductorsin an extruded core of moisture resistant and flame retardant materialcovered within an overlapping spiral metal tape. This type is used inhazardous locations and in cable trays or in racewaysUNDERGROUND FEEDER AND BRANCH CIRCUIT (UF) POWER AND CONTROL TRAY CABLE (TC)Is a moisture resistant cable used for underground connections includingdirect burial in the ground as feeder or branch circuitThis is factory assembled two or more insulated conductors with or withoutassociated bare or covered or grounding under a mettalic sheath, This isused for installation of cable trays, raceways, or it is supported by messenger wireFLAT CABLE ASSEMBLY (FC)Is an assembly of parallel conductors formed integrally with insulatingmaterial web designed especially for field installation in metal surface or racewaysFLAT CONDUCTOR CABLE (FCC)Consist of three or more flat copper conductor placed edge to edgeseparated and enclosed with an insulating assembly. This type of cable isused for general purposes such as: appliance branch circuit, and for individualbranch circuits, especially in hard smooth continous floor surfaces and the likeMEDIUM VOLTAGE CABLE (MV)Is a single or multi conductor solid dielectric insulated cable rated at 2,000volts or higher. This type is used for power system up to 35,000 voltsUTILITIES 1999TELEPHONE TERMINAL CABINETPart of the facility which accept the house cable riser and house theterminal block at each floor and at the highest or end of a feeder riser cableTELECOMMUNICATION SYSTEMIs the simplest type of building automation system, which intercoms, PABX,microwave links, analog and digital telephone system, video conferencing,satellite links, structured cabling and similar devicesON EVERY HOSE BIBBA full open type valve is used in several locations in a water distributionsystem, which of the following does NOT require it?DRY STANDPIPEA fireline system without a constant water supply and is equipped with a fire serviceinlet and outlet connection installed exclusively for the use of Fire ServiceWATER SERVICE PIPETerm used to main water pipe delivering portable water to a buildingINSUFFICIENCY IN THE SIZE OF THE WATER SERVICE AND DISTRIBUTION PIPEWhich poor design in the plumbing system causes water supply dropwhen the fixture is simultaneously opened?1 "KITCHEN SINK TRAP SIZE1 "LAVATORY TRAP OR BRANCH SIZE64mm or 2 "OUTLET OF DRY STANDPIPE64mm or 2 "OUTLET OF WET STANDPIPE for riser of more than 15 mtsSLOPE OF THE DRAIN PIPENot needed in sizing the vent pipe for individual branch and circuit ventbased on the total linear footage of the pipe making up the vent?3 WAY VALVE DIVERTERA hot and cold water supply pipes, where it is mix manually in desired water temperaturetemperature and direct the mixed water either at the shower head or at the fooe spoutBALL VALVEPrinciple where a single lever valve used in kitchen sink and lavatory, they arebeautiful and maintenance free132 LITERS PER MINUTEMinimum water delivery in liters per minute for an outlet of a wet standpipeat a residual pressure or 1.8 kilos per sq.mtsELBOW REDUCERA female GI threaded pipe reducer fitting use to connect a reducing branch pipe at an angleFLUSH VALVE FITTINGSGeneral term used to described the fitting in the drawing2" WYE AND 2 x 1/8 BEND COMBINATIONGI fitting used to accept the P trap assembly of the lavatory (drawing)CIRCUIT VENTType of vent applied on installations with multi branch interval where the vertical vent pipetakes off in front of the first fixture and connects to a main vent stackREVERSE OSMOSISStage in water purification which removes mineral deposits, slats, heavy metal, totally dissolvessolids while some useful minerals are retainedFIXED TEMPERATUREFire detector installed in a fire alarm system, which uses low melting pointHEAT DETECTORsolders or metals that expand when exposed to heat to detect a fire, 135deg-197deg FCOUPLINGGI fitting to join two threaded fittings as close as possible but not exceeding three inchesPRESSURE REGULATORA device used to control an incoming high water pressure into the water distribution systemby mechanical means so as to bring it to a working pressure of 80 psiWRONG CHOICE OF VENT TYPEA poor venting system caused by a slow draining of water froma fixture down a plumbing systemSUBMERSIBLE PUMPA type of pump for driven well from 150 to 200 ft which work by a principle of venturi wherejet,jack,reciprocatingwater of high pressure is pump into the well to draw water upwards through the return pipe5"Which is not a standard size of GI pipe for water supply? 2 1/2", 3",4",5"URINAL FLASH VALVE ASSEMBLYDevice in control valve which work by discharging instantaneousvolume of water at higher pressureTAIL PIECE or DEAD ENDTerm used for pipe extension of not more than 2 feet in length install inany stack or branch of a plumbing rough in for the purpose of future trapCHECK VALVEA full open valve located in a supply pipe to every water heaterAUTOMATED RETRACTABLE PILLAR SYSTEMParking management system for two types of vehicular deterrent either articulated arm typeor straight beam type. It can be activated by means of radio frequency remote control, pushpush button switch, photocell, magnetic loop or acces controlTHREE FIXTURESException of fixture to be connected into a single trapDRY STANDPIPEThe presence of Fire Service ConnectionPOLTYBUTELENE PIPE AND FITTINGS AND FITTINGSPipes and fittings which can exclusively be used for cold water lines forpotable main distribution water service, sprinkler and irrigation system. Itcould be ", ", 1", 1 ", 1 " and 2"UPVC DWV SANITARYOrange or brown in color with sizes of 4" and 3 meter in lengths of pipesPIPES AND FITTINGSand fittings, ASTM 2729 standardsASBESTOS PIPELeast popular and not recommended use as potable water distribution pipeShower set for bath (drawing)SINGLE LEVER BATH FAUCET WITH HAND SHOWER-TELEPHONE SHOWERFIBER CEMENT PIPEPipe not used as water service pipeGATE VALVEA cut off valve installed in the service piping system64mm or 2 1/2"Minimum size of wet standpipe for a riser more than 15 meters from the source61 cmsMinimum height of dry standpipe outlet from the floor lineAIR CHAMBERDevice used to prevent water hammeringVENT SIZE IS AT LEAST 1/2 THE DRAIN IT SERVES BUT NOT LESS THAN THE REQUIRED MINIMUM W/C EVER IS LARGERRule of thumb in sizing an individual ventFAN COIL UNITMechanical equipment coupled with a central air conditioning system usedto dehumidify and cool the airstream injected to the conditioned space1.5 TIMES MORE THAN THE ELEVATOR CAR DEPTHSpacing provided for elevator with single bank in a non residential buildingDOWN COLLECTIVE CONTROLRecording calls even when car is in use. It answer calls starting from thehighest and so on while descendingUP COLLECTIVE CONTROLRecording calls even when car is in use. It answer calls startingfrom the lowest and so on while ascendingGOVERNOR - safety gear, safety shoe, magnetic breakSafety device of a passenger elevator which activates if the car travels fasterthan its rated speed by grasping the guide rail to stop the car safelyESCALATOR'S PARTmain drive chain, step chain, handrail, drive chain, bottom sprocketONE IN FRONT OF THE OTHERWhen planning a multiple system of elevator layout where four ormore elevator are arrange in banks1120;980;800;760Nominal size of an escalator; escalator's width like those in Japanese brand1150;1100;1000;900Nominal size of an escalator; escalator's step like those in Japanese brandADJUSTABLE LOCKING DAMPERSType of dampers installed at supply ducts, which are electro-mechanicallyactivated by building automation system to close in case of fire within the areaAT THE ESCALATOR MACHINE ROOMLocation of Control System or computer brain of the escalator12 to 14 SQ.MT PER TON OF REFRIGERATIONThis is a guide for the initial estimate per Ton of Refrigeration per sq.mts. of a standardroom of normal condition without external solar heat gain and excessive internal heat gainInternational Standard and EN 81.1 Code in designing a machine roomPIPING OR DUCT BELONGING TO OTHER SYSTEM SHOULD NOT RUN THROUGH THE MACHINE ROOMSTANDARD INSTALLATION OF ESCALATOR NOT EXCEEDING 4.50 MTS./ TRUSSTHE TOP CHORD OF THE TRUSS IS WITH A STEEL ANGLE SUPERIMPOSED ON THE BUILDING'S STRUCTURAL BEAMPRESSURE RELIEF VALVESafety device caused by insufficient water flow on heater when brown outEXPANDED POLYTHELYNE FOAM INSULATIONVital part of Solar Water heater to keep the heat in and cold outKNOCKDOWN BY MAJOR COMPONENT PARTPackaging and assembly of elevator as it arrives on the siteCOOLING TOWERCool the condenser unit in a central conditioning systemSINGLE POLE SWITCH AT START, 3-WAY SWITCH AT MIDPOINT AND SINGLE POINT SWITCH AT ENDTwo lights in a long hallway connected in parallel are to be controlled simultaneously atthree pointsPOWER AND CONTROL TRAY CABLE TYPEFactory assembled of two or more insulated conductors w/ or w/oassociated bare cover ground conductor under a non metallic sheathapproved forr installation in cable trays, in raceways or in supported by a messenger wireRHHeat Resistant Rubber / 75 degreesMETAL HALIDELight source used in lighting fixtures best specified in areas such as those requiring high illuminationlevels for detailed work such as needle workSCOTT CONNECTION 2 PHASE TO 3 PHASEA transformer location required in some localities, where a three phasepower is required from a two phase systemTWMoisture Resistant Thermoplastic / 60 degreesILLUMINATED SWITCHType of switch where pilot light inside a lit to guide the person inside85 amperesAmpacity of an insulated copper conductor, based on ambient temperature of 30degreesw/a 22 sq.m cross sectional area in size for USEDRAWINGSMain power supply and wiring system for 110/220 volt line; which wiring diagram fits (drawing)15 amperesAmpacity of an insulated copper conductor, based on ambient temperature of 30degreesw/a 2.0 sq.m cross sectional area in size for TWPVC IS ALLOWED FOR AS LONG ASBest suited for Rigid Nonmetallic Conduit like PVC for underground installation in buildingsBOTH BURIAL DEPTH OF NO LESS460mm AND CONCRETEENCASEMENT IS PROVIDEDULTRASONICHigher than 20,000 HertzSABINSUnit of acoustic absorption equivalent ot absorption by one square root of a perfect absorberAVOIDING ZONES OF DIRECT SOUNDFirst defense method from external noise by site selection and siteplanning for quiet internal acoustic environmentINSTALL ABSORBENT MATERIALS WITHIN THE WALL OF THE ENCLOSUREThe effective method can be employed to reduce direct noise, which is transmitted airborne,for noise reduction within a space7,380 fpsSound with a wavelength of 1.50 m at Frequency 1,500 HzINTENSITYPerceptual characteristic of sound which is the average rate of flow ofenergy per unit area perpendicular to the direction of propagationJUNE 1998 UTILITIESVENT PIPEIt ventilates a house drainage system and prevent siphonage and back pressure3/8"It is the size of supply valve tank type for water closet6 FEETThe maximum horizontal developed length between the trap seal and thevertical vent inlet at the trap2x2" WYE WITH 2" CO AND 2 X 1/8 BENDCombination fitting between the vertical waste branch and the horizontal waste branchCOUPLING REDUCERA female GI pipe reducer fitting used in straight connection, both are threaded insideCIRCUIT VENTA vent use in battery of plumbing fixture where the vent is installed in frontof the last fixture of the batteryJETA water pump for a 200ft driven well to deliver 10gpm against 200ft. It is located at the surfaceRECIPROCATINGA pump motor installed on the surface attached to a lift and push a rod toactivate a submerge pistonCENTRIFUGALA pump which delivers high water discharge with high water pressure drawnfrom a shallow source like cistern, best suited as fire or transfer pump.46 mmMinimum height of Fire Service station from the gradeBELL REDUCERA female GI pipe reducer fitting use to connect a reducing branch froma main water distributionPOLYETHELENE PIPEPEWATER DISTRIBUTION PIPESGeneral term for hot or cold water pipes containing portable water supplyingdifferent plumbing fixtureSEASONAL ENERGY EFFICIENCYRating index of an air conditioning system which rate the number for the unitof BTU heat moved per watt of electrical input energyTONS OF REFRIGERATIONStandard unit rating to describe the capacity of the cooling tower5.500 mmRequired minimum vertical clearance of an overhead service drop measured from the groundover residential and comercial properties and driveways not subjected to truck traffic and over600 volts to groundBUSWAYSApproved assembly of insulated conductors with fitting and conductorterminations in a completely enclosed, ventilated protective metal housingwhere the system is design to carry fault current and to withstand themagnetic forces of such currentRIGID STEEL CONDUITA raceway especially constructed for the purpose of physical protectionof conductors, the pulling in or the withdrawing of wires or cables after theconduit is in place and made of metal pipe of standard width and thickness120/240 VOLTSSystem of voltage used for computing branch circuits and feeder loadWINDMILLNatural energy source derived from force of wind acting on oblique bladesthat radiates froma shaft attached to a dynamo to produce electricityPANEL BOARDA point in th electrical system where the electrical load of a given areais assumed to concentrateSINGLE PHASE ALTERNATING CURRENTAlternating current generated by the alternator where its wave rises to thepeak, sinks to zero, drops to the negative peak and rises again to zero anumber of times each second depending on the frequency for which themachine is designedTWO PHASE ALTERNATING CURRENTAlternating current where the alternator comprises of windings mountedat right angles to each other and provided with separate external connectionscurrent waves will be produced and each of which will be at its maximumwhen the other is zero2.2, 30, 8, 14Minimum conductor size for for overhead service drop for copper wire or cableUFUnderground Feeder, 60-75 degrees CTHWMoisture and Heat Resistant Thermoplastic used for dry and wet locationsREFRACTIONThe physical behavior of sound when travelling forward in a straight pathchanges in direction as it passes through different densities and causesthe sound waves to bendJANUARY 1998 UTILITIES38 mm (1 1/2")Standard size of wet standpipe outlet for each floorWYE FITTINGA type of pipe fitting for yoke vent6"The minimum horizontal clearance of vent branch immediately above the floodlevel rim of the fixtureTHERMOSTATA device installed on electric water heater used to detect the working temperature toto activate a switch1 1/2"The minimum size or trap of a bidet3/8"Supply valve tank type for water closetCOUPLINGA threaded fitting to join two threaded fittings as closed as possible butnot exceeding 3 inchesAT EVERY BRANCH INTERVAL OFA SOIL STACKLocation that does not require installation of clean outBATTERY OF FIXTUREInterconnection of the same fixture in one soil or waste branch with one branch ventCOMMON VENTA single vent that ventiliates multiple traps, in the case of back to back fixtureNUMBER OF FIXTUREA parameter in sizing the drainage pipeSOIL PIPEConveys a discharge of solid and liquid wastes closets with or without thedischarged from other fixture to the house drain102 mm (4")Minimum size of standpipe for a building in which the highest outlet is 23 mor less from the Fire service ConnectionUPFEED OR DIRECT METHODIn water distributon system which constantly rely its pressure from the main water pipe apply onlyif the main fixture is supply continously with the flow rate and minimum required working pressurePLUMBING SYSTEMSystem of building which includes the water supply distribution pipes thefixture and fixture traps, the soil waste and the vent pipes, the house drainand the house sewer, the storm water drainage with their devices64 mm (2 1/2")Minimum size of wet standpipe for riser of more than 15 mts from source6"Minimum height of a branch vent above the fixture it is ventingSIAMESE CONNECTIONSCommon term for a two way service connectionsBALLSingle level valve used in kichen sink, lavatory faucets or at shower valveNUMBER OF BRANCH VENTSA parameter in sizing a horizontal soil branch pipe1/4", WYE and 1/8" BEND, LONG SWEEP, 1/8" and 1/8" COMBINATIONFitting installed at the base of the soil stack and a building drain12 TO 14 SQ.MTR/TRGuide for initial estimate of Ton of refrigerationJET PUMP WITH INJECTORA suitable type of water pump for deep well 4" or 6' casing to deliverJACK35gpm against 450 ft. total develop heightZEOLITEPassing on it can treat hardwaterCIRCUIT VENTVertical vent pipes take in front of the last fixture and connects to its soilstack which acts as a ventBUFFERA safety device of a passenger elevator which reduces the collision shockof a car or counterweight due to over travel beyond the lowest stop. ItIt stops the car or counterweight safelyMONITORING CONTACTS ON STEP CHAINRating index of an air conditioning system which rates the unit for the numberfor BTU of heat moved per watt of electrical input energyInternal electronic safety features of an escalator. They function as asafety switches or detectors which monitors internal mechanical orelectrical abnormalities and shuts down the system in any eventualityCIRCUIT BREAKERA passenger elevator safety device which protects the motor and itselectrical parts from over currentSAFETY SHOEThe elevator door components that detect the obstacle during the door closing and re opensthe doorAIR CURTAINMechanical equipment install on top of the main doors used to retain cold in the interiorsWAIT INTERVALDividing the travel length by the rated speedEVAPORATORS CANNOT BE LOCATED AT CEILINGMajor physical restriction does a split type air conditioner system have which restrictsits efficiency and performanceDOOR LOCK SWITCHActivate by preventing the door to open during elevator car run,the door elevator will open only when the car stops at the floorOUTSIDE DOOR LATCHOpening of door for passenger in case of power failure in the elevatorMAGNETIC BREAKActivate if the car travel faster than its travel speed, the power will turn off,and grasp the rope to operate the safety gearFOR CAR OVERRUNMain purpose of shafts overhead spaceLIMIT SWITCHDevice that open and closes the electric current in an elevator when it has reached theEMERGENCY SWITCHdesignated end of travel courseTRAVEL SWITCHMOTOR CONTROL SWITCHFAN COIL UNITCoupled with central air conditioning system, used to dehumidify and coolthe air stream injected into the conditioned spaceCIRCUIT BREAKERA device designed to open and close a circuit by non automatic meansand to open the circuit automatically on predetermined over currentwithout damaged to itself when properly applied within its ratingSERVICE RACEWAYThe raceway that encloses the service entrance conductorsY-Y FOR LIGHTING AND POWERA transformer connection which is ideal in the event of change of primaryvoltage from 2400 volts to 4160 volts to increase the potential capacity ofthe system24 AMPEREMaximum allowed ampere rating of one chord or plug utilization equipment connected in a 30ampere branch circuit for lighting or utilization equipment5.5 sq.mmMinimum wire size in sq.mm type THW stranded copper conductor in raceway for a branchcircuit with 30 ampere rating3500mmMinimum vertical clearance of an overhead service drop measured from the ground, at theelectrical service entrance or above areas or sidewalks accesible only to pedestrian lanes,measure from final grade line or other accesible surface only for service drop cabled togetherwith a grounded bare messenger wire and limited to 300 volts to ground30 amperesMinimum ampacity of feeder conductor with a load of more than two wire branch circuit suppliedby a 3-wire feeder but not exceed the computed branch circuit load3.5 sq.mMinimum wire size in sq.mm type TW copper conductor in raceway for a branch circuit with 20ampere rating45 AmperesAmpacity of an insulated copper conductor, based on ambient temperature of 30degreesw/a 8 sq.m cross sectional area in size for THWMULTI WIRE BRANCH CIRCUITA branch circuit consisting of two or more grounded conductors having a potential differencebetween them, and a grounded conductor having equal potential difference between itPRESSURIZED WATER REACTORA type of water coolant operates at a pressure of about 150 atmospheresDEVICEA unit of electrical system which is intended to carry but not utilize electrical energyBUSWAYSApproved assembly of insulated conductors with fitting and conductorterminations in a completely enclosed, ventilated protective metal housingwhere the system is design to carry fault current and to withstand themagnetic forces of such current60 CYCLESStandard frequency of water supply by the company like MeralcoUSEUnderground Service Entrance / 75degreesSERVICE DROPThe overhead service conductor from the last pole or other aerial supportto and including the splices, if any connecting to te service entranceconductors at the buildingBOILING WATER REACTORA type of nuclear reactor where the water coolant is permitted to boilwithin the core by operating at somewhat low pressureBALANCE LOADINGIn a 240V, a three phase 3-wire service, branch cicuits are loaded and distributed to eachof the three phase with this objective to attainCABLE TRAYSUnit or assembly of unit sections and associated fittings forming a rigid structural systemused to support cablesOPEN DELTA FOR LIGHTING AND POWERA transformer connection where the secondary load is a combination oflighting and power. This connection is used when the single phase lightingis large as compared with the power loadDELTA Y FOR LIGHTING AND POWERA useful transformer connection applied when single phase lighting load isall on one phase resulting into unbalanced primaryARMOR CABLE TYPE ACLType of flexible cable which is a fabricated assembly of insulated conductorswhich permit its use at exposed weather or excessive moistureTHREE PHASE ALTERNATING CURRENTA type of alternating current where the alternator comprises the threearmature windings set at 120 degrees to each other, current will beproduced in the form of triple wave30 amperesMinimum branch circuit rating for household ranges and cooking appliancePOROUS ABSORBENTType of sound absorbent best for lower band frequenciesHERTZUnit of frequency which is equal to one cycle per secondSINGLE PHASE ALTERNATING CURRENTA type of alternating current generated by alternator, where its wave rises toits peak, sinks to zero, drop to a negative peak and rises again to zeroa number of times each seconds depending on the frequency of themachine is designed2" WYE AND 2 x 1/8 BEND COMBINATIONUse to accept the P-trap assembly of the lavatoryNUMBER OF BRANCH VENTSA parameter in sizing horizontal branch pipePUMPSSUBMERSIBLE PUMPA type of pump for driven well from 150 to 200 ft which work by a principle of venturi wherewater of high pressure is pump into the well to draw water upwards through the return pipeRECIPROCATINGA pump motor installed on the surface attached to a lift and push a rod toactivate a submerge pistonJETA water pump for a 200ft driven well to deliver 10gpm against 200ft. It is located at the surfaceCENTRIFUGALA pump which delivers high water discharge with high water pressure drawnfrom a shallow source like cistern, best suited as fire or transfer pump.The motor is placed at the surface with shaft to turn the impellers belowJACKA suitable type of water pump for deep well 4' or 6' casing to deliver35gpm against 450 ft. total develop heightELECTRICALSINGLE POLE SWITCH AT START,Two lights in a long hallway connected in parallel are to be controlled simultaneously at3-WAY SWITCH AT MIDPOINT ANDthree pointsSINGLE POINT SWITCH AT ENDDRAWINGSMain power supply and wiring system for 110/220 volt line; which wiring diagram fits (drawing)Pre requisite in use of split knob and tube wiringA CLEARANCE OF NOT LESS THAN 76mm SHALL BE MAINTAINED BETWEEN CONDUCTORS AND NOT LESS THAN 26mmMULTI WIRE BRANCH CIRCUITA branch circuit consisting of two or more grounded conductors having a potentialdifference between them, and a grounded conductor having equal potential difference between it6000mm to 7600mmWhat is the maximum horizontal range between two or more air terminal for lightningarrest for an effective disaster prevention in building5500 mmRequired minimum vertical clearance of an overhead service drop measured from the groundover residential and comercial properties and driveways not subjected to truck trafficand over 600 volts to groundRequired minimum vertical clearance of an overhead service drop measured from the groundover public streets, alleys, roads, parking areas subjected to truck traffic, driveways on otherthan residential property, and other land traveresed by vehicular such as cultivated, grazingforest and courtyards3500mmMinimum vertical clearance of an overhead service drop measured from the ground, at theelectrical service entrance or above areas or sidewalks accesible only to pedestrian lanes,measure from final grade line or other accesible surface only for service drop cabled togetherwith a grounded bare messenger wire and limited to 300 volts to ground24 amperesMaximum allowed ampere rating of one chord or plug utilization equipment connected in a 30ampere branch circuit for lighting or utilization equipment30 amperesMinimum ampacity of feeder conductor with a load of more than two wire branch circuitsupplied by a 3-wire feeder but not exceed the computed branch circuit load85 amperesAmpacity of an insulated copper conductor, based on ambient temperature of 30degreesw/a 22 sq.m cross sectional area in size for USE45 amperesAmpacity of an insulated copper conductor, based on ambient temperature of 30degreesw/a 8.0 sq.m cross sectional area in size for THW15 amperesAmpacity of an insulated copper conductor, based on ambient temperature of 30degreesw/a 2.0 sq.m cross sectional area in size for TW5.5 sq.mmMinimum wire size in sq.mm type THW stranded copper conductor in raceway for a branchcircuit with 30 ampere rating3.5 sq.mMinimum wire size in sq.mm type TW copper conductor in raceway for a branch circuit with20 ampere rating30 amperesMinimum branch circuit rating for household ranges and cooking appliance

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