Utilities

P L U M B I N G

TYPE OF VENTSBRANCH VENT

CIRCUIT VENTconnection of a horizontal branch to the vent stack

COMMON VENT

CONTINOUS VENT

DRY VENTof waste from a drainage pipe

DUAL VENT See common ventGROUP VENT

INDIVIDUAL VENTserved or terminates in the open air

LOOP or CIRCUIT VENT originating waste or soil stack

LOCAL VENTfrom a room fixture

MAIN VENT

RELIEF VENTsystems where the drainage systems might otherwise be air bound

UNIT VENT

STACK VENTstack horizontal drain, the uppermost end above the roof

WET VENT A vent which also serves as a drain

YOKE VENT A pipe connecting upward from a soil or waste stack to a vent stack for the purpose of

NATIONAL PLUMBING CODE OF THE PHILIPPINES

BACKFLOW Is 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 source

BACK SIPHONAGE Is the backflow of used, contaminated or polluted water from a plumbingfixture due to negative pressure

BATTERY OF FIXTURE Refers to any group of two or more similar adjacent fixtures which discharge into a commonhorizontal waste or soil branch

BLANK FLANGE A flange that is not drilledBLIND FLANGE A flange that closes the end of a pipe line used to discharge waterCAULKING Is plugging an opening with oakum, lead or other materialsCOUPLING A short internally threaded section of pipe, used to join two pipes of conduitsUNION Used to connect the two ends of two pipes, neither of which can be turnedNIPPLE A short length of pipe with threads at each end; used to join couplings or fittings

DEAD END Is the extended portion of a pipe that is closed at one end to which no connections are madeon the extended portion

DEVELOPED LENGTH The length along the center of the pipe and fitting

DRAINAGE 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 treatment

FIXTURE BRANCH Is a pipe connecting several fixtures

FLOOD LEVEL Is a device located at the bottom of the tank for the purpose of flushing water closets andand similar fixture

FERRULE A metallic sleeve, join to an opening of pipe, into which a plug is screwed that can be removed for the purpose of cleaning

INVERT Is the lowest portion of the inside of any pipe or conduit that is not vertical

PLUMBING SYSTEM Includes water supply and distribution pipe; plumbing fixture and traps, soilwaste and vent pipes; house drain and house sewers including their respective connections

ROUGH IN Installation of all parts of the plumbing system which can be completed prior to the installationof fixtures

SIAMESE CONNECTIONS A wye connections used on fire lines so that two lines of hose maybe connected to the hydrantor to the same nozzle

SOIL PIPE Is 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 drain

TRAP SEAL Is the maximum vertical depth of liquid that a trap will retain measure between the crown weirand the top of the dip of the trap

A vent connecting one or more individual vents with a vent stack or stack ventA branch vent that serves two or more traps and extends from in front of the last fixture

A 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 fixtureA vertical vent that is the continuation of the drain to which the vents connectA vent that does not serve as drain and is located where if is not exposed to back up

A branch vents that performs its functions for two or more trapsA pipe installed to vent, a fixture trap and w/c connects with the vent system above the fixture

A 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 the

Is a pipe on the fixture side of the trap through which vapor or foul air is removed

The principal artery of the venting system to which vent branches may be connectedA vent installed so as to permit additional circulation of air between the drainage and vent

An arrangement of venting so installed that that one vent pipe will serve two trapsThe extension of a soil or waste stack above the highest horizontal drain connected to the

preventing pressure changes in the stack

REVIEW CENTER (PLUMBING)

WATER RESERVOIR Install to be able to meet the water requirements during peak demands from a low yieldingwater wellThe device being used to eliminate the noise cause by water hammer

50 FEET OR MORE The location of water well to nearest septic vault2 PERCENT Slope of house sewer connected from the building to the main sewerCULVERT A passage under a road, embankment or canal which allow for the flow of waterBLACK WATER The third kind of water after the storm water and area waterRECESSED The type of bathtub oher than sunken, square, free standingWHITE Color coding of high pressure steamBLACK Color coding for fuel oil divisionTRAP OR WATER SEAL The water column that seals the escape of unhealthy gases in the sanitary drainage system2.50 M Service drop conductor clearance over the roofCOMPRESSION VALVE A valve which in the water flow is shut off by a flat disk that is screwed down onto its seatCISTERN An underground tank reservoir to store waterOVERHEAD STORM DRAIN Another classification of storm drain, besides from inside drain and outside drainPRESSURE COCK

PRESSURE REDUCING VALVE A valve which maintains uniform pressure on its outlet side regardless of its pressure fluctuationson the inlet side above the pressure level

UNION PATENTthe connection when needed

FLUSHOMETERis activated by direct water pressure

CORPORATION STOP Another name for corporation cock

AIR TRAP A U-shaped pipe filled with water and located beneath the plumbing fixturesto form a seal against the passages of gases and odors

ABSORPTION TRENCH A trench containing course aggregate and a distribution tile pipe through which septic tankeffluent may flow covered with earth

ILLUMINATION The luminous flux density incident on a surface

CATCH BASIN An underground structure for drainage into which water from the roof or floor will drain through sewer

WYE FITTING A type of fitting for yoke bent1 1/2" Minimum discharge pipe and fitting for bath tub150mm DIAMETER Minimum size of building sewer; it should not be less than the building drain

TRAP 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 CLOSETS

SHOCK RELIEF AND EXPANSION CHAMBER

Tap used in high pressure water system with an interval valve to control the flow of water

A pipe fitting within the interconnection of pipes for the purpose of easy dismantling of

A device that discharge a predetermined volume of water to fixture for flushing purposes and

TYPES OF WATER CLOSETS

SIPHON-VORTEX

SIPHON-JET Sanitary, efficient very quiet. A toilet bowl into which the flushing water enters through the rim and

REVERSE TRAPare smaller

WASH DOWNsmall irregular passageway, prohibited by some health codes

BLOW OUTURINALS WALL HUNG

THROUGHPEDESTALSTALL

BIDET A basin like fixture design to be struddled for bathing the genitals and posterior parts of the bodyGI PIPE SIZES 1/2", 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/floor122mm Maximum height of Fire Service Connection from the grade/floor61 mm. Minimum height of Dry Standpipe Outlet from the floor line122 mm Maximum height of Dry Standpipe Outlet from the floor line5 FEET Considered 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 1:25 Ratio of water closets for female population for elementary and secondary schoolRATIO OF 1:30 Ratio of water closets for male population for elementary and secondary schoolRATIO OF 1:75 Ratio of urinals for elementary schoolsRATIO OF 1:75 Ratio of water closets for female population for principal worship placesRATIO OF 1:5 Ratio of lavatory to number of occupants4 CLOSETS Minimum number of water closet required for female office and public buildings3 HEADS Minimum head of water required in section of plumbing for water test

M E C H A N I C A L AIR CONDITIONER An apparatus that can heat, cool, clean and circulate airBUGLARS AND PROWLERS They were deter to the intrusion alarm system in residential signal systemAIR DUCT An air passage usually formed in sheet metal with insulation for ventilating on a buildingDRAUGHT OR DRAFT The current of air or gases4 STOREY Requirement for a dry standpipeBLACK Color coding of piping for fuel oil division

DUMBWAITER A hoisting and lowering mechanism with a building equipped with relatively small carexcusively for carrying materials

HUMIDIFIER The device for maintaining desirable humidity conditons in the air supplied50 GALS. The average consumption of water per capita

THERMOSTAT An automatic control of the operation of heating or cooling device responding to changes oftemperature of the space

BULLDOZER A tractor equipped with the blade attached by arms and bolted to its end, used in piling earthACOUSTICAL LAY IN PANEL The acoustical ceiling board design to be laid in an exposed grid suspension systemDECIBEL The total sound units provided by a given material135-197 F Heat rating for a fixed temperature heat detector

REAR OR TOP Fire tube boliers shall be provide with sufficient room for removal or replacement of tubeeither from these places

SOUND ABSORPTION The process of dissipating sound energy by converting it to heat

SOUND INSULATION The system of deadening sound materials to wall, ceiling, floors to prevent sound from passingthrough the members into adjoining room

LUX The illuminance produce by luminous flux of the one lumen distributed uniformly over a one square meter surface

WATER TABLE Level of subterrenean water

AIR HANDLING UNITbefore it is distributed to an air conditioned space

TRAVEL TIME This is the criteria in selection of an elevator other than interval and average waiting timeCONCRETE CASING Protection of PVC pipe undergroundCREEP Reflection of sound from curve surface

Quiet, extermely sanitary. Like the siphon jet but having the flushing water directed through therim to create a vortex that scours the bowl

siphonic action initiated by a water jet draws the contents of the bowl through the trapwayModerately noisy. Similar to siphon jet except that trap passageway and water surface area

Minimum cost. Least efficient subject to clogging, noisy. Simple washout and emptying through

Noisy but highly efficient. Strong jet into leg forces contents out

Package assembly of air conditioning components which provides for the treatment of the air

ELEVATORTRAVEL TIME The criteria in the selection of an elevator other than interval and average waiting timeFREIGHT ELEVATOR Type of conveyor that transport packages equipment crates

BUFFER Important element of an elevator below the first level floor line that absorbs and minimizebuilding shocks to the car

PIT That portion of the hoistway in the elevator extending from the threshold level of the lowest landingfloor of the hoistway

WINDING DRUM MACHINE A geared drive machine in which the suspension ropes are fastened to and wind on a drumGUIDE RAILS Vertical tracks that serves as a guide for the car and the counterweight600mm Car pit clearance depth from the bottom of the car

FOR REPAIR AND INSPECTION When machine room or penthouse is provided at the top of the hoistway, it shall have a sufficient room for this

2 HOISTWAYS When 4 or more elevator serve all or the same portion of the bulding4 ELEVATORS Shalll be located in any one hoistway3 HOISTWAYS Minimum number of hoisting ropes for traction elevators2 HOISTWAYS Minimum number of hoisting ropes for drum type elevators30mm Minimum diameter of hoisting and counterweight ropes

Provision for all elevators

BUFFER A 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 safelyInternal electronic safety features of an escalator. They function as a safety switches or detectors which monitors internal mechanical or electrical abnormalities and shuts down the system in any eventuality

CIRCUIT BREAKER A passenger elevator safety device which protects the motor and itselectrical parts from over current

OUTSIDE DOOR LATCH During elevator emergency to rescue passenger, this type of elevator is used to open the door from the outside

SAFETY SHOE The elevator door components that detect the obstacle during the door closing and re opensthe door

WAIT INTERVAL Dividing the travel length by the rated speed

DOOR LOCK SWITCH Activate by preventing the door to open during elevator car run, the door elevator will open only when the car stops at the floor

MAGNETIC BREAK Activate if the car travel faster than its travel speed, the power will turn off,and grasp the rope to operate the safety gear

FOR CAR OVERRUN Main purpose of shafts overhead space

GOVERNOR Safety device of a passenger elevator which activates if the car travels faster than its rated speed by grasping the guide rail to stop the car safely

A European brand of elevator OTIS-U.S.

BUFFER A safety device of a passenger elevator which reduces the collision shock of a car or

Internal electronic safety features of an escalator. They function as a safety switches or detectors which monitors internal mechanical or electrical abnormalities and shuts down the system in any eventuality


OUTSIDE DOOR LATCHfrom the outside

SAFETY SHOEthe door

WAIT INTERVAL Dividing the travel length by the rated speed



FOR CAR OVERRUN Main purpose of shafts overhead space

LIMIT SWITCH Device that open and closes the electric current in an elevator when it has reached thedesignated end of travel course

ESCALATOR35 degrees Minimum angle of inclination of an escalator558 mm Minimum width of balustrade1.20 m Maximum width of balustrade330 mm Maximum width of the stepsTEMPERED TYPE GLASS Kind of glass required in an escalator's balustrade38 mpm Maximum rated speed measured along the angle of inclination

OVER LOAD RELAY AND REVERSE POLARITY RELAY

MONITORING CONTACTS ON STEP CHAIN

counterweight due to over travel beyond the lowest stop. It stops the car or counterweight safelyMONITORING CONTACTS ON

STEP CHAIN

During elevator emergency to rescue passenger, this type of elevator is used to open the door The elevator door components that detect the obstacle during the door closing and re opens

BOILERSR.C CONCRETE OR MASONRY Provision for boiler rooms inside the building3.00 mts. FROM OUTSIDE WALL Minimum distance if the building is not made of fire resistive materials1 meter No part of the boiler shall be closer to this from the wall5.00 mts Distance of the smokestacks above the building within 50 mts. radius2 CHECK VALVES

Provision when two or more boilers are connected in parallelONE SAFETY VALVE Provision of every boilerTWO SAFETY VALVE Provision for boilers having generating capacity exceeding 907 kg/hr15 DAYS Notification in writing in advance for boiler's inspection

REFRIGERATION AND AIR CONDITIONING68deg-74deg F Temperature and humidity of the air to be used for comfortable cooling2.30 meters ABOVE THE FLOOR Minimum for refrigerant piping crossing a passageway in any buildingSTOP VALVES Provision of installation for refrigerant system containing more than 9 kgs.2.13 meters Minimum for window type AC installed on ground floors

PIPINGGALVANIZED PIPING It should not be used for steam

STEAM DIVISIONWHITE High PressureBUFF Exhaust Fan

WATER DIVISIONBLUE Fresh Water, low pressureBLUE Fresh Water, high pressureGREEN Salt water piping

OIL DIVISIONBRASS OR BRONZE DeliveryYELLOW DischargeGRAY PNEUMATIC DIVISIONBLACK GAS DIVISIONBLACK FUEL OIL DIVISIONBLACK REFRIGERATING DIVISION

Provision between any feed pump and the boiler in addition to the regular shut-off valveNON RETURN OR SHUT OFF VALVE

E L E C T R I C A L

CIRCUIT BREAKER The part of the cut out that is design to open or break an electrical current under anexcessive load

WATTS Unit of powerAMPERE The unit used in the measure of the rate of flow of electricityOBSERVATION STANDS This is where an electric service conductor can be installedTOWER OR FLATFORM

KNIFE SWITCH A 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 them

TRANSFORMER VAULT Provision for building with an expected electric load demand of 200KVARECTIFIER The conversion of alternating current (AC) to direct current (DC)

A kind of flourescent lamp that does not use starter element

JUNCTION BOX An iron box or casing by which electrical conduit branches are formed5 STOREYS A passenger elevator with a constant 24 hour service for residential condominum3.00 m Minimum service drop of connection line above the ground and from the ground500 mm Minimum distance of poles and transformer support located from the road right of wayAIR CURTAIN A vertical flow of air used to separate different function of spacesGOOSENECK Original name of P-TrapDISTRIBUTION LINE1.20m The minimum width of door in hospital housing unitPLUG IN TYPE Another type of circuit breaker element other than bolt-onCOPPER WIRE The most practical conductor of electricityRACEWAY A channel system in carrying electrical wire

CABLE WIRE An electric conductor consisting of a group of smaller diameter conductor strands twistedtogether

DISTRIBUTION PANEL Another name for power panelTRANSFORMER A device used to convert voltage from higher to lower or vise versaNON FERROUS METAL Metal containing no iron such as copper, brass and aluminum

2.50m The minimum allowance clearance from the highest point of the roof to the service dropconductor from NBC

STEP DOWN TRANSFORMER To bring down voltageOPEN WIRING Wiring not concealed by the building sructureAUTOMATIC TRANSFER SWITCH Transferring the power load from the building circuitry to standby generator or during brownoutAIR SWITCH One with contacts that separate in airARC VOLTAGE The voltage across the welding arc

ARMORED CABLE Cable provided in wrapping of metal usually steel wires or tapes, primarily for the purposeof mechanical protection

ASKAREL A synthetic non-flammable insulating liquid which, when decomposed by an elctric arcevolves only non-explosive gases

ASSEMBLY

BASE LOAD Minimum load over a given period of time

BRANCH CIRCUITthe current

BUSconnection for two or more circuit

BUSWAYApproved assembly of insulated conductors with fitting and conductor terminations in a

fault current and to withstand the magnetic forces of the current

CAGE protected and including any conductors necessary for interconnections of the object protectedand an adequate ground

CIRCUIT BREAKER A device design to open under abnormal conditions a current carrying circuit without injuryitself

CONDUCTORcurrent

CONTROLLERelectric power delivered to the apparatus to which it is connected

CORONA A luminous discharge due to ionization of the air surrounding a conductor caused by voltagegradient exceeding a certain critical value

CUT OUT BOX

DEMAND FACTOR Is the ratio of the maximum demand of the system or part of the system to the total connectedload of the system

DEVICE A unit of electrical system which is intended to carry but not utilize electrical energyDUCT A single enclosed runway for conductor cablesELECTRIC MOTOR Machine which transforms electric power into mechanical power

RAPID START FLOURESCENT LAMP

The main feed line of an electrical circuit to which branch circuits are connected

Is combination of all or a portion of component parts included in an electric apparatus,mounted on a supporting frame or panel and properly interwined

That portion of a wiring system extending beyond the final overcurrent device protecting

Is a conductor, or group of conductors, in switchgear assemblies which serves as a common

completely enclosed, ventilated protective metal housing where the system is design to carry

System of conductor forming an essentially continuous conducting network over the object

A wire or combination of wires not insulated from one another suitable for carrying electric

A device or group of devices which serves to govern in some predetermined manner, the

A metal housing that houses the circuit breaker or fuses; surface mounted

FEEDERS

FOOTCANDLE Unit 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 lumen

FUSE An overcurrent protective device with a circuit opening fusible member which is heated andsevered by the passage of the overcurrent through it

GENERAL LIGHTING Types of lighting that deals with lighting relatively large area coveredILLUMINATION Density of the luminous flux on a surface

KNIFE SWITCH Is a form of air switch in which the moving element is a hinge blade wedge betweenstationary contact blades when closed

LAMP Artificial source of lightLAMPHOLDER Device for mechanical support of lightLIGHT A radiant energy

LIGHTNING ARRESTER Protective device for limitting surge voltage on equipment by discharging or by-passingsurge current

LIGHTNING SURGE Is a transient electric disturbance in an electric circuit caused by lightningLINE TAP

LOAD FACTOR Is the ratio of the average load over a designated period of time to the peak load occuringin that period

LUMEN Unit of luminous fluxLUX A unit of illumination equal to one lumen per square meterOUTLET Point of the wiring system at which current is taken to supply utilization equipmentOUTLET BOX A metal box at an outlet which encloses one or more receptaclePEAK LOAD Maximum load consumed by a unit in a stated period of timePENDENT Device or equipment which is supended from overhead either by means of the flexible cord

PILOT WIRE Auxillary conductor used in connection with remote measuring devices for operatingapparatus at a distant point

PULLBOX Box with a blank cover which is inserted in one or more runs of raceway to facilitatepulling in the conductors and the distributing of the conductors

RACEWAY Any channel for holding wires, cables or busbarsRECEPTACLE Convinience Outlet; Contact device installed at an oulet for the connection of an attachment plug

RIGID 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 thickness

ROSETTE Enclosure of porcelain or other insulating material fitted with terminals and intended forconnecting the flexible cord carrying a pendent to permanent wiring

SERVICE DROP The overhead service conductor from the last pole or other aerial support to and including splices if any connecting to the service entrance conductors at the building

SERVICE RACEWAY The raceway that encloses the service entrance conductorsSUBMARINE CABLE Cable designed for service under waterSURGE Is a transient variation in the current potential or power

5.5 mm2 Minimum wire size of THW stranded copper conductor in raceway for a branch circuit in a 30ampere rating

SI UNITHERTZ Unit of frequency equal to one cycle per secondsPHON Unit of loudness of levelREVERBERATION Prolongation of sound as a result of succesive reflectionWAVELENGTH Distance sounds travels during each cycles of vibrationSOUND DIFFRACTION Acoustical phenomenon which causes sound wave to bend or scattered aroundSOUND Fluctuation in pressure, a particle displaceent in elastic mediumPURE TONE Sound sensation in a single frequencyCANDELA A luminous intensity of light expressed in candela; Unit of luminous intensityLUMINAIRE A lighting fixtureLAMBERT Unit of luminance equal to 1 candela per square meterLUX Unit of illmination equal to one lumen per square meterFOOT CANDLE Unit of illumination equal to one square footLUMINOUS FLUX Rate of flow of light through a surfaceIMPEDANCE Resistance in AC systemCONDUCTANCE Reciprocal of resistanceSOUND INTENSITY Rate of flow of sound energyACCENT LIGHTING Lighting used primarily to draw attention to particular point of interestsHPS LAMP A type of HID lamp

The circuit conductors between the service equipment or the generator switchboard ofan isolated plant and the branch circuit overcurrent device

Is the radial branch connection to a main line

CONNECTIONS

SINGLE PHASE FOR POWER The 120/240 volt winding is connected in series serving 240 volts on

TWO PHASE CONNECTIONS Consist merely of two single phase transformers operated 90deg out

power load simultaneously

compared with the power load

Y DELTA FOR POWERincrease its potential capacityThis 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 system

OPEN Y DELTA

in any one bank

Y-Y FOR LIGHTING AND POWERcapacity of the system

Y-Y AUTO TRANSFORMER

In some localities two phase power is required from three phase system

If it should be necessary to supply three phase power from a twophase system, the special tap must be provided on the secondary side

T ThermoplasticTW Moisture Temperature ResistantUF Underground FeederFEPW Flourinated Ethylene Propylene Moisture ResistantRH Heat Resitant RubberRHW Heat and Moisture Resistant RubberRUH Heat Resistant Latex RubberTHW Moisture and Heat Resistant ThermoplasticTHWN Heat and Moisture Resistant Thermoplstic with NylonXHHW Moisture and Heat Resistant Cross Link PolymerBX Armored CableTHHN THERMOPLASTIC HEAT RESISTANTPE POLYETHELENESA SILICON ASBESTOSAVA ASBESTOS AND VARNISH CAMBRIC

HEAT DETECTORFIXED TEMPERATURE HEAT DETECTOR 135deg-197deg FPHOTO ELECTRIC DETECTOR

INFRARED FLAME DETECTORIR energy flickers at rate which is chracteristics of flame

IONIZATION SMOKE HEATDETECTOR chamber to detect fire

SINGLE PHASE TO SUPPLY 120 V LIGHTING LOAD

This connetions is used where the load is comparatively small and the length of the secondary circuit is short

SINGLE PHASE TO SUPPLY 120/240 3-WIRE LIGHTING AND POWER LOAD

This connections is used in most urban distribution circuits

a two wire system, this connection is used for small industrial applications

of phase, the common wire must carry /2 times the load currentDELTA-DELTA FOR POWER AND LIGHTING

This is used to supply a single phase lighting load and three phase

OPEN DELTA FOR LIGHTING AND POWER

This connection is used when single phase lighting load is large as

Often it is desirable to increase the voltage of a circuit form a 2400 to 4160 volts to

Y DELTA FOR LIGHTING AND POWER

This connection requires special watt-hour meteringWhen operating Y delta and one service is disabled, service maybe maintained at reduced load

DELTA Y FOR LIGHTING AND POWER

The single phase lighting load is all on one phase resulting in unblanced primary currents

The primary voltage was increased from 2400 to 4160 volts to increase the potential

When the ratio of transformation from the primary to secondary voltage is small,the most economical way of stepping down the voltage

SCOTT CONNECTION 3PHASE TO 2PHASESCOTT CONNECTED 2PHASE TO 3PHASE

Use low melting point solders or metal the expand when exposed to heat to detect fire

Use of the scattering of light by smoke into view of photo cell through incandescent or diodeIt responds to the high-frequency radiant energy from flames. Alarm is only triggered when

Uses the interruption of small current flow between electrodes by smoke in ionized sampling

TYPES OF CABLE

ARMOR CABLE (AC)

METAL CLAD CABLE (MC)

A factory assemble cable of one or more conductors each individualyinsulated and enclosed in a mettalic sheath of interlocking tape of smooth

branch circuit and for indoor, outdoor work

MINERAL INSULATED CABLE (MI)

Is a factory assembly of one or more conductors insulated with highly

tight continous copper sheath. This type of cable is used in dry, wet orcontinously moist location as service feeders or branch circuitIs a also a factory assembly of two or more insulated conductors having

sheath. This type is used specifically for one or two family dwellings notexceeding 3 storey buildingThis 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 in

direct burial in the ground as feeder or branch circuitThis is factory assembled two or more insulated conductors with or without associated bare or covered or grounding under a mettalic sheath, This is

FLAT CABLE ASSEMBLY (FC) Is an assembly of parallel conductors formed integrally with insulating

FLAT CONDUCTOR CABLE (FCC) separated and enclosed with an insulating assembly. This type of cable is

branch circuits, especially in hard smooth continous floor surfaces and the like

MEDIUM VOLTAGE CABLE (MV)

UTILITIES 1999

TELEPHONE TERMINAL CABINET Part of the facility which accept the house cable riser and house the terminal block at each floor and at the highest or end of a feeder riser cable

TELECOMMUNICATION 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 devices

ON EVERY HOSE BIBB A full open type valve is used in several locations in a water distribution system, which of the following does NOT require it?

DRY STANDPIPE A fireline system without a constant water supply and is equipped with a fire serviceinlet and outlet connection installed exclusively for the use of Fire Service

WATER SERVICE PIPE Term used to main water pipe delivering portable water to a buildingWhich poor design in the plumbing system causes water supply dropwhen the fixture is simultaneously opened?

1 ½" KITCHEN SINK TRAP SIZE1 ¼" LAVATORY TRAP OR BRANCH SIZE64mm or 2 ½" OUTLET OF DRY STANDPIPE64mm or 2 ½" OUTLET OF WET STANDPIPE for riser of more than 15 mts

SLOPE OF THE DRAIN PIPE Not needed in sizing the vent pipe for individual branch and circuit vent based on the total linear footage of the pipe making up the vent?

3 WAY VALVE DIVERTER A 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 spout

BALL VALVE Principle where a single lever valve used in kitchen sink and lavatory, they are beautiful and maintenance free

132 LITERS PER MINUTE Minimum water delivery in liters per minute for an outlet of a wet standpipe at a residual pressure or 1.8 kilos per sq.mts

ELBOW REDUCER A female GI threaded pipe reducer fitting use to connect a reducing branch pipe at an angleFLUSH VALVE FITTINGS General term used to described the fitting in the drawing

GI fitting used to accept the P trap assembly of the lavatory (drawing)

CIRCUIT VENT Type of vent applied on installations with multi branch interval where the vertical vent pipe takes off in front of the first fixture and connects to a main vent stack

REVERSE OSMOSIS Stage in water purification which removes mineral deposits, slats, heavy metal, totally dissolvessolids while some useful minerals are retained

FIXED TEMPERATURE Fire detector installed in a fire alarm system, which uses low melting point HEAT DETECTOR solders or metals that expand when exposed to heat to detect a fire, 135deg-197deg FCOUPLING GI fitting to join two threaded fittings as close as possible but not exceeding three inches

Fabricated assembly of insulated conductors enclosed in flexible metalsheath. It is used both on exposed and concealed work

or corrugated tube. This type of cable is especially used for service feeders,

compressed refractory mineral insulation enclosed in a liquid and gas

NON METALLIC SHEATED CABLE (NM)

a moisture resistant, flame retardant and non metallic material outer

SHIELDED NON METALLIC SHEATED CABLE (SNM)

hazardous locations and in cable trays or in raceways

UNDERGROUND FEEDER AND BRANCH CIRCUIT (UF) POWER AND CONTROL TRAY CABLE (TC)

Is a moisture resistant cable used for underground connections including

used for installation of cable trays, raceways, or it is supported by messenger wire

material web designed especially for field installation in metal surface or raceways Consist of three or more flat copper conductor placed edge to edge

used for general purposes such as: appliance branch circuit, and for individual

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 volts

INSUFFICIENCY IN THE SIZE OF THE WATER SERVICE AND DISTRIBUTION PIPE

2" WYE AND 2 x 1/8 BEND COMBINATION

PRESSURE REGULATOR A device used to control an incoming high water pressure into the water distribution system by mechanical means so as to bring it to a working pressure of 80 psi

WRONG CHOICE OF VENT TYPE A poor venting system caused by a slow draining of water from a fixture down a plumbing system

SUBMERSIBLE PUMP A type of pump for driven well from 150 to 200 ft which work by a principle of venturi wherejet,jack,reciprocating water 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"

Device in control valve which work by discharging instantaneous volume of water at higher pressure

TAIL PIECE or DEAD END Term used for pipe extension of not more than 2 feet in length install in any stack or branch of a plumbing rough in for the purpose of future trap

CHECK VALVE A full open valve located in a supply pipe to every water heaterParking 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 control

THREE FIXTURES Exception of fixture to be connected into a single trapDRY STANDPIPE The presence of Fire Service Connection

Pipes and fittings which can exclusively be used for cold water lines for potable main distribution water service, sprinkler and irrigation system. It could be ½", ¾", 1", 1 ½", 1 ¼" and 2"

UPVC DWV SANITARY Orange or brown in color with sizes of 4" and 3 meter in lengths of pipesPIPES AND FITTINGS and fittings, ASTM 2729 standardsASBESTOS PIPE Least popular and not recommended use as potable water distribution pipeShower set for bath (drawing) SINGLE LEVER BATH FAUCET WITH HAND SHOWER-TELEPHONE SHOWERFIBER CEMENT PIPE Pipe not used as water service pipeGATE VALVE A 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 cms Minimum height of dry standpipe outlet from the floor lineAIR CHAMBER Device used to prevent water hammering

Rule of thumb in sizing an individual vent

FAN COIL UNIT Mechanical equipment coupled with a central air conditioning system usedto dehumidify and cool the airstream injected to the conditioned spaceSpacing provided for elevator with single bank in a non residential building

DOWN COLLECTIVE CONTROL Recording calls even when car is in use. It answer calls starting from the highest and so on while descending

UP COLLECTIVE CONTROL Recording calls even when car is in use. It answer calls startingfrom the lowest and so on while ascendingSafety device of a passenger elevator which activates if the car travels faster than its rated speed by grasping the guide rail to stop the car safely

ESCALATOR'S PART main drive chain, step chain, handrail, drive chain, bottom sprocket

ONE IN FRONT OF THE OTHER When planning a multiple system of elevator layout where four or more elevator are arrange in banks

1120;980;800;760 Nominal size of an escalator; escalator's width like those in Japanese brand1150;1100;1000;900 Nominal size of an escalator; escalator's step like those in Japanese brand

Type of dampers installed at supply ducts, which are electro-mechanicallyactivated by building automation system to close in case of fire within the areaLocation of Control System or computer brain of the escalator

This 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 gain

URINAL FLASH VALVE ASSEMBLY

AUTOMATED RETRACTABLE PILLAR SYSTEM

POLTYBUTELENE PIPE AND FITTINGS AND FITTINGS

VENT SIZE IS AT LEAST 1/2 THE DRAIN IT SERVES BUT NOT LESS THAN THE REQUIRED MINIMUM W/C EVER IS LARGER

1.5 TIMES MORE THAN THE ELEVATOR CAR DEPTH

GOVERNOR - safety gear, safety shoe, magnetic break

ADJUSTABLE LOCKING DAMPERSAT THE ESCALATOR MACHINE ROOM12 to 14 SQ.MT PER TON OF REFRIGERATION

International Standard and EN 81.1 Code in designing a machine room

PIPING OR DUCT BELONGING TO OTHER SYSTEM SHOULD NOT RUN THROUGH THE MACHINE ROOM

STANDARD INSTALLATION OF ESCALATOR NOT EXCEEDING 4.50 MTS./ TRUSS

THE TOP CHORD OF THE TRUSS IS WITH A STEEL ANGLE SUPERIMPOSED ON THE BUILDING'S STRUCTURAL BEAM

PRESSURE RELIEF VALVE Safety device caused by insufficient water flow on heater when brown outVital part of Solar Water heater to keep the heat in and cold out

Packaging and assembly of elevator as it arrives on the site

COOLING TOWER Cool the condenser unit in a central conditioning systemTwo lights in a long hallway connected in parallel are to be controlled simultaneously atthree points

Factory 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 wire

RH Heat Resistant Rubber / 75 degrees

METAL HALIDE Light source used in lighting fixtures best specified in areas such as those requiring high illuminationlevels for detailed work such as needle workA transformer location required in some localities, where a three phasepower is required from a two phase system

TW Moisture Resistant Thermoplastic / 60 degreesILLUMINATED SWITCH Type of switch where pilot light inside a lit to guide the person inside

85 amperes Ampacity of an insulated copper conductor, based on ambient temperature of 30degreesw/a 22 sq.m cross sectional area in size for USE

DRAWINGS Main power supply and wiring system for 110/220 volt line; which wiring diagram fits (drawing)

15 amperes Ampacity of an insulated copper conductor, based on ambient temperature of 30degreesw/a 2.0 sq.m cross sectional area in size for TWBest suited for Rigid Nonmetallic Conduit like PVC for underground installation in buildings

460mm AND CONCRETE ENCASEMENT IS PROVIDEDULTRASONIC Higher than 20,000 HertzSABINS Unit of acoustic absorption equivalent ot absorption by one square root of a perfect absorber

First defense method from external noise by site selection and siteplanning for quiet internal acoustic environmentThe effective method can be employed to reduce direct noise, which is transmitted airborne,for noise reduction within a space

7,380 fps Sound with a wavelength of 1.50 m at Frequency 1,500 Hz

INTENSITY Perceptual characteristic of sound which is the average rate of flow of energy per unit area perpendicular to the direction of propagation

EXPANDED POLYTHELYNE FOAM INSULATIONKNOCKDOWN BY MAJOR COMPONENT PART

SINGLE POLE SWITCH AT START, 3-WAY SWITCH AT MIDPOINT AND SINGLE POINT SWITCH AT END

POWER AND CONTROL TRAY CABLE TYPE

SCOTT CONNECTION 2 PHASE TO 3 PHASE

PVC IS ALLOWED FOR AS LONG AS BOTH BURIAL DEPTH OF NO LESS

AVOIDING ZONES OF DIRECT SOUND

INSTALL ABSORBENT MATERIALS WITHIN THE WALL OF THE ENCLOSURE

JUNE 1998 UTILITIESVENT PIPE It ventilates a house drainage system and prevent siphonage and back pressure3/8" It is the size of supply valve tank type for water closet

6 FEET The maximum horizontal developed length between the trap seal and thevertical vent inlet at the trapCombination fitting between the vertical waste branch and the horizontal waste branch

COUPLING REDUCER A female GI pipe reducer fitting used in straight connection, both are threaded inside

CIRCUIT VENT A vent use in battery of plumbing fixture where the vent is installed in frontof the last fixture of the battery

JET A water pump for a 200ft driven well to deliver 10gpm against 200ft. It is located at the surface

RECIPROCATING A pump motor installed on the surface attached to a lift and push a rod toactivate a submerge piston

CENTRIFUGAL A pump which delivers high water discharge with high water pressure drawnfrom a shallow source like cistern, best suited as fire or transfer pump.

46 mm Minimum height of Fire Service station from the grade

BELL REDUCER A female GI pipe reducer fitting use to connect a reducing branch froma main water distribution

POLYETHELENE PIPE PE

WATER DISTRIBUTION PIPES General term for hot or cold water pipes containing portable water supplyingdifferent plumbing fixture

SEASONAL ENERGY EFFICIENCY Rating index of an air conditioning system which rate the number for the unitof BTU heat moved per watt of electrical input energy

TONS OF REFRIGERATION Standard unit rating to describe the capacity of the cooling tower

5.500 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 ground

BUSWAYS

Approved assembly of insulated conductors with fitting and conductor terminations in a completely enclosed, ventilated protective metal housingwhere the system is design to carry fault current and to withstand the magnetic forces of such current

RIGID 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 thickness

120/240 VOLTS System of voltage used for computing branch circuits and feeder load

WINDMILL Natural energy source derived from force of wind acting on oblique bladesthat radiates froma shaft attached to a dynamo to produce electricity

PANEL BOARD A point in th electrical system where the electrical load of a given areais assumed to concentrateAlternating current generated by the alternator where its wave rises to the peak, sinks to zero, drops to the negative peak and rises again to zero a number of times each second depending on the frequency for which themachine is designedAlternating 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 maximum when the other is zero

2.2, 30, 8, 14 Minimum conductor size for for overhead service drop for copper wire or cableUF Underground Feeder, 60-75 degrees CTHW Moisture and Heat Resistant Thermoplastic used for dry and wet locations

REFRACTIONThe physical behavior of sound when travelling forward in a straight pathchanges in direction as it passes through different densities and causesthe sound waves to bend

2x2" WYE WITH 2" CO AND 2 X 1/8 BEND

SINGLE PHASE ALTERNATING CURRENT

TWO PHASE ALTERNATING CURRENT

JANUARY 1998 UTILITIES38 mm (1 1/2") Standard size of wet standpipe outlet for each floorWYE FITTING A type of pipe fitting for yoke vent

6" The minimum horizontal clearance of vent branch immediately above the floodlevel rim of the fixture

THERMOSTAT A device installed on electric water heater used to detect the working temperature toto activate a switch

1 1/2" The minimum size or trap of a bidet3/8" Supply valve tank type for water closet

COUPLING A threaded fitting to join two threaded fittings as closed as possible butnot exceeding 3 inchesLocation that does not require installation of clean out

BATTERY OF FIXTURE Interconnection of the same fixture in one soil or waste branch with one branch ventCOMMON VENT A single vent that ventiliates multiple traps, in the case of back to back fixtureNUMBER OF FIXTURE A parameter in sizing the drainage pipeSOIL PIPE Conveys a discharge of solid and liquid wastes closets with or without the

discharged from other fixture to the house drain102 mm (4") Minimum size of standpipe for a building in which the highest outlet is 23 m

or less from the Fire service ConnectionUPFEED OR DIRECT METHOD In water distributon system which constantly rely its pressure from the main water pipe apply only

if the main fixture is supply continously with the flow rate and minimum required working pressurePLUMBING SYSTEM System of building which includes the water supply distribution pipes the

fixture and fixture traps, the soil waste and the vent pipes, the house drain and the house sewer, the storm water drainage with their devices

64 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 CONNECTIONS Common term for a two way service connectionsBALL Single level valve used in kichen sink, lavatory faucets or at shower valveNUMBER OF BRANCH VENTS A parameter in sizing a horizontal soil branch pipe

Fitting installed at the base of the soil stack and a building drain

12 TO 14 SQ.MTR/TR Guide for initial estimate of Ton of refrigerationJET PUMP WITH INJECTOR A suitable type of water pump for deep well 4" or 6' casing to deliverJACK 35gpm against 450 ft. total develop heightZEOLITE Passing on it can treat hardwater

CIRCUIT VENT Vertical vent pipes take in front of the last fixture and connects to its soilstack which acts as a vent

BUFFERA safety device of a passenger elevator which reduces the collision shockof a car or counterweight due to over travel beyond the lowest stop. It It stops the car or counterweight safelyRating 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 a safety switches or detectors which monitors internal mechanical or electrical abnormalities and shuts down the system in any eventuality


SAFETY SHOE The elevator door components that detect the obstacle during the door closing and re opensthe door

AIR CURTAIN Mechanical equipment install on top of the main doors used to retain cold in the interiorsWAIT INTERVAL Dividing the travel length by the rated speed

Major physical restriction does a split type air conditioner system have which restrictsits efficiency and performance


OUTSIDE DOOR LATCH Opening of door for passenger in case of power failure in the elevator


FOR CAR OVERRUN Main purpose of shafts overhead spaceLIMIT SWITCH Device that open and closes the electric current in an elevator when it has reached theEMERGENCY SWITCH designated end of travel courseTRAVEL SWITCHMOTOR CONTROL SWITCH

AT EVERY BRANCH INTERVAL OFA SOIL STACK

1/4", WYE and 1/8" BEND, LONG SWEEP, 1/8" and 1/8" COMBINATION

MONITORING CONTACTS ON STEP CHAIN

EVAPORATORS CANNOT BE LOCATED AT CEILING

FAN COIL UNIT Coupled with central air conditioning system, used to dehumidify and coolthe air stream injected into the conditioned space

CIRCUIT 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 rating

SERVICE RACEWAY The raceway that encloses the service entrance conductors

Y-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 system

24 AMPERE Maximum allowed ampere rating of one chord or plug utilization equipment connected in a 30ampere branch circuit for lighting or utilization equipment

5.5 sq.mm Minimum wire size in sq.mm type THW stranded copper conductor in raceway for a branchcircuit with 30 ampere rating

3500mm

Minimum vertical clearance of an overhead service drop measured from the ground, at the electrical 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 ground

30 amperes Minimum ampacity of feeder conductor with a load of more than two wire branch circuit supplied by a 3-wire feeder but not exceed the computed branch circuit load

3.5 sq.m Minimum wire size in sq.mm type TW copper conductor in raceway for a branch circuit with 20ampere rating

45 Amperes Ampacity of an insulated copper conductor, based on ambient temperature of 30degreesw/a 8 sq.m cross sectional area in size for THW

MULTI WIRE BRANCH CIRCUIT A branch circuit consisting of two or more grounded conductors having a potential differencebetween them, and a grounded conductor having equal potential difference between it

PRESSURIZED WATER REACTOR A type of water coolant operates at a pressure of about 150 atmospheresDEVICE A unit of electrical system which is intended to carry but not utilize electrical energy

BUSWAYS

Approved assembly of insulated conductors with fitting and conductor terminations in a completely enclosed, ventilated protective metal housingwhere the system is design to carry fault current and to withstand the magnetic forces of such current

60 CYCLES Standard frequency of water supply by the company like MeralcoUSE Underground Service Entrance / 75degrees

SERVICE 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 building

BOILING WATER REACTOR A type of nuclear reactor where the water coolant is permitted to boilwithin the core by operating at somewhat low pressure

BALANCE LOADING In a 240V, a three phase 3-wire service, branch cicuits are loaded and distributed to eachof the three phase with this objective to attain

CABLE TRAYS Unit or assembly of unit sections and associated fittings forming a rigid structural systemused to support cablesA 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 loadA useful transformer connection applied when single phase lighting load isall on one phase resulting into unbalanced primary

ARMOR CABLE TYPE ACL Type of flexible cable which is a fabricated assembly of insulated conductorswhich permit its use at exposed weather or excessive moistureA type of alternating current where the alternator comprises the threearmature windings set at 120 degrees to each other, current will be produced in the form of triple wave

30 amperes Minimum branch circuit rating for household ranges and cooking appliancePOROUS ABSORBENT Type of sound absorbent best for lower band frequenciesHERTZ Unit of frequency which is equal to one cycle per second

A 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 designedUse to accept the P-trap assembly of the lavatory

NUMBER OF BRANCH VENTS A parameter in sizing horizontal branch pipe

OPEN DELTA FOR LIGHTING AND POWER

DELTA Y FOR LIGHTING AND POWER

THREE PHASE ALTERNATING CURRENT

SINGLE PHASE ALTERNATING CURRENT

2" WYE AND 2 x 1/8 BEND COMBINATION

PUMPS

SUBMERSIBLE PUMP A 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 pipe

RECIPROCATING A pump motor installed on the surface attached to a lift and push a rod toactivate a submerge piston

JET A water pump for a 200ft driven well to deliver 10gpm against 200ft. It is located at the surface

CENTRIFUGALA 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 below

JACK A suitable type of water pump for deep well 4' or 6' casing to deliver35gpm against 450 ft. total develop height

ELECTRICALSINGLE POLE SWITCH AT START, Two lights in a long hallway connected in parallel are to be controlled simultaneously at

three pointsSINGLE POINT SWITCH AT ENDDRAWINGS Main power supply and wiring system for 110/220 volt line; which wiring diagram fits (drawing)

MULTI WIRE BRANCH CIRCUITdifference between them, and a grounded conductor having equal potential difference between it

6000mm to 7600mm What is the maximum horizontal range between two or more air terminal for lightningarrest for an effective disaster prevention in building

5500 mmRequired minimum vertical clearance of an overhead service drop measured from the ground

and 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 courtyards

3500mm

Minimum vertical clearance of an overhead service drop measured from the ground, at the

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 ground

24 amperes

30 amperes

85 amperes Ampacity of an insulated copper conductor, based on ambient temperature of 30degrees



5.5 sq.mm Minimum wire size in sq.mm type THW stranded copper conductor in raceway for a branch

3.5 sq.m Minimum wire size in sq.mm type TW copper conductor in raceway for a branch circuit with20 ampere rating

30 amperes Minimum branch circuit rating for household ranges and cooking appliance

3-WAY SWITCH AT MIDPOINT AND

Pre requisite in use of split knob and tube wiring

A CLEARANCE OF NOT LESS THAN 76mm SHALL BE MAINTAINED BETWEEN CONDUCTORS AND NOT LESS THAN 26mm

A branch circuit consisting of two or more grounded conductors having a potential

over residential and comercial properties and driveways not subjected to truck traffic

electrical service entrance or above areas or sidewalks accesible only to pedestrian lanes,

Maximum allowed ampere rating of one chord or plug utilization equipment connected in a 30ampere branch circuit for lighting or utilization equipmentMinimum ampacity of feeder conductor with a load of more than two wire branch circuit supplied by a 3-wire feeder but not exceed the computed branch circuit load

w/a 22 sq.m cross sectional area in size for USE

w/a 8.0 sq.m cross sectional area in size for THW

w/a 2.0 sq.m cross sectional area in size for TW

circuit with 30 ampere rating

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