UTIL 2: ELECTRICAL & OTHER POWERED SYSTEMS Flashcards by Candice Mae Pableo

A phenomenon or manifestation, principally made of atoms (electron, proton, neutron)

ELECTRICITY

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Flow in an electric circuit

ELECTRIC CURRENT

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An electric current that flows in one direction (- to +), uniform in strength, as that of a battery or dry cell

DIRECT CURRENT

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An electric current that reverses direction of flow at regular intervals

ALTERNATING CURRENT

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the force which causes movement of electricity in a conductor

ELECTROMOTIVE FORCE

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A circuit that is broken, incomplete or disconnected

OPEN CIRCUIT

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It is the current-carrying capacity of a wire without undue heating

AMPACITY

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known as the electric flow in an electric circuit

ELECTRIC CURRENT

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T/F: 1 volt: 1 ampere: 1 ohm

TRUE

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T/F: 1 volt: 2 ampere: 1 ohm

FALSE

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T/F: 2 volt: 1 ampere: 1 ohm

FALSE

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T/F: 1 volt: 1 ampere: 2 ohm

FALSE

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It converts mechanical energy to electrical energy

GENERATOR

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It converts electrical energy to mechanical energy

MOTOR

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In working dwgs, a Circuit Diagram is known as?

ELECTRICAL LAYOUT

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unit of resistance or friction which is inherent in insulator is?

OHMS

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unit of EMF

VOLT

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The relationship of EMF, Current, Resistance

OHM’S LAW

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How many cps is used for a residential single phase load?

60 Hertz

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EMF used for household power supply

230V

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In all dwellings other that hotels, what is the required minimum general lighting load as per PEC?

3watts per square foot of floor space

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What is the required number of appliance circuit in a residence as per PEC?

2 small appliance circuits

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How many watt-load is each small appliance circuit in a residence as per PEC?

1500-watt load

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What load needs an extra surge of power to bring it to full speed?

STARTING LOAD

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What type of wire is primarily used in residential wiring as branch circuits for outlets?

NONMETALLIC SHEATED CABLE (NMC/NM)

What type of wire is BX?

FLEXIBLE METAL CLAD (FMC)/METAL CLAD (MC)/ARMORED CABLE (AC)

What type of wire is ROMEX?

NONMETALLIC SHEATED CABLE (NMC/NM)

What type of wire is used for general wiring?

THERMOPLASTIC (THHN,THWN,TW, etc.)

What type of wire is fire and heat resistant, can withstand high temperatures and heavy current overloads, and is used in industrial applications?

MINERAL INSULATED (MI

What type of wire is used by telecommunications, also known as a submarine cable?

SHIELDED NONMETALLIC SHEATED CABLE (SNM)

What type of transformer is used for 1,000 KVA?

H-FRAME (OUTDOOR TRANSFORMER)

What type of transformer is used by 225 KVA?

CLUSTER MOUNTED (OUTDOOR TRANSFORMER)

What type of transformer is used by 120 volts to 240 volts?

PAD MOUNTED (OUTDOOR TRANSFORMER)

What type of fuse is used in dwellings covers 5 to 30 amps?

PLUG FUSE

What type of fuse covers 5 to 60 amps?

CARTRIDGE FUSE

What type of fuse covers 61 to 600 amps?

KNIFE BLADE FUSE

What type of circuit breaker senses heat?

THERMAL PIGTAL

What type of circuit breaker senses load?

MAGNETIC PIGTAIL

What type of luminaire uses filament?

INCANDESCENT LAMP/BULB

What type of luminaire uses cathode?

FLUORESCENT LAMP/BULB

Where should you locate light switches?

LATCH SIDE OF DOORS

What is a point in a circuit where other devices can be connected?

OUTLET

What is a device to which any plug-in extension line, appliance, or device can be connected?

RECEPTACLE

Which profession ensures that electrical equipment and wiring are installed exactly as planned?

LICENSED ELECTRICIANS

Which profession designs the electrical system and positions the relationship of all fixtures, devices, switches, and controls?

PROFESSIONAL ELECTRICAL ENGINEER

What protects the branch circuit?

CIRCUIT BREAKER

It prevents flow of electric current

INSULATOR

It offers lower ressistance of electric current

CONDUCTOR

T/F: LED is a type of fixture

TRUE

What is a receptacle that is placed 0.30 m from the floor where an appliance is plugged?

CONVENIENCE OUTLET

Another term for channel

RACEWAY

Height of switch installation

1.20m-1.50m

What do you call the point of entry of electrical service?

GOOSENECK

Where is the service switch usually located?

KITCHEN

Height of installation for a power panel

6'7"

A type of conduit used primarily for service entrance cable

RSC

A thermoplastic used for ceiling

A thermoplastic used for toilet and bath

A thermoplastic used for kitchen

THW

Used for service entrance lateral

USE

Used for service entrance oblique

Directly buried to the ground

Used for freezers, 24/7 equipment, ATMs, and cable TVs

Meaning of THHN

THERMOPLASTIC, HIGH-HEAT RESISTANT, NYLON JACKET OUTER SHEATH

Assemblies of cables used for system furniture application and cable management

FLAT CABLE ASSEMBLIES

Meaning of THWN

THERMOPLASTIC, MOISTURE RESISTANT, NYLON JACKET OUTER SHEATH

This cable uses copper for insulation

Another term for armored cable

Conduit used for underground feeder

RSC

Known as closed raceway

BUSBAR

Known as open wireway

CABLE TRAY

Uses bus duct or busway

BUSBAR

Uses T-joists/precast concrete slab with built-in pipes

CELLULAR CONCRETE FLOOR RACEWAYS

Uses rib decking for cable installation

CELLULAR METAL FLOOR RACEWAY

Uses conventional electrical installation

UNDERFLOOR RACEWAY

Another name for bus

FEEDER

What is the purpose of louvers for cable bus?

HEAT DISSIPATION

Type of ceiling raceway used from transformers to switchboard

CABLE BUS

Type of raceway used from main panelboard to distribution panelboard

CABLE BUS

Type of raceway used from distribution panelboard to ceiling installation

TRAY CABLE

Mesh wire type is for?

TRAY CABLE

An electromechanical device

CIRCUIT BREAKER

Detects short circuit and overload

CIRCUIT PROTECTIVE DEVICES

Known as the final distribution point for convenience outlets and lighting

PANELBOARD

Part of a circuit breaker that senses undue heating and overload

SOLENOID

Used in apartments through meter banks

SERVICE SWITCH

A freestanding assemblies of switches, fuses/circuit breakers

SWITCHBOARD

A synthetic non-flammable liquid used to insulate transformers

ASKAREL

A transformer used for large facility

UNIT SUBSTATION

An equipment that controls the circuit breaker

SERVICE SWITCH

Type of fuse used for simple circuitry in residence

CARTRIDGE FUSE

Type of fuse used for dwellings

PLUG FUSE

Type of fuse used for complex circuitry buildings

KNIFE BLADE FUSE

Uses alloy link or wire; fusible link

FUSE

A lighting fixture that has a housing is called?

LUMINAIRE

Commercial base component for incandescent bulb

SCREW BASE

Type of bulb that has filament

INCANDESCENT

Type of lamp that has cathode

FLUORESCENT

What is the purpose of a starter?

START THE BALLAST

What is the purpose of ballast?

START THE CATHODE

Type of lamp that has a pre-heat starting actuator

COMPACT FLUORESCENT LAMP (CFL)

A type of lamp that has instant starting actuator

SLIMLINE FLUORESCENT

Type of fluorescent used for cove lighting

What is an electrical raceway either metallic or non-metallic?

CONDUIT

A type of conduit used for feeders

RIGID STEEL CONDUIT (RSC)

A type of conduit without thread

ELECTRIC METALLIC CONDUIT (EMC)

A conduit fitting used for turning cables at 90°

LONG SWEEP ELBOW FITTING

It can do it fitting used for service entrance cable

SERVICE ENTRANCE (SE)

A surface mounted switch is called?

TOGGLE

A flush mounted switch is called?

PUSH BUTTON

Controls the intensity of light

DIMMER

A type of convenience outlet that is used outside located adjacent to main and service entries

WEATHERPROOF OUTLET

The type of convenience outlet that can receive both flat and round pins

UNIVERSAL OUTLET

What is a negatively charged atom?

ELECTRON

What is a positively charged atom?

PROTON

What is an atom that is not electrically charged?

NEUTRON

What instrument measures voltage?

VOLTMETER

What instrument measures amperse?

AMMETER

What instrument measures ohms?

OHMMETER

Refers to the rate of power or power consumption

WATT

This is the source of electricity

GENERATING STATION

These are the high voltage power lines

TRANSMISSION LINES

This facility distributes power to several circuits

SUBSTATION

What do you call any line that runs along highways and major roads to serve communities and businesses?

CIRCUIT

A line that serves smaller groups of customers and neighborhoods from the main circuits

TAP LINES

These are devices that reduce power to usable voltage levels

INDIVIDUAL TRANSFORMER

Raceway suspended from slab and has clearance for movement and maintenance, not embedded in floorings

CEILING RACEWAY

An open wireway/support/tray, preventing sagging of cables

TRAY CABLE

A lightweight open wireway

MESH WIRE

A sturdy open wire way, decreases resistance of current flow

RAIL TYPE

A flat shaped raceway

BUSBAR/BUSWAY/BUS DUCT

A raceway in a rounded shape

CABLE BUS

What does NEMA stand for?

National Electrification Manufacturers Association

What raceway is used from transformer to switchboard?

CABLE BUS

What raceway is used from switchboard to main panel board or generator?

CABLE BUS

What wire is used as a feeder type, good for indoors and roughing-in wood?

NMC

What wire is used for indoor branch circuits and roughing-in wood?

What wire is used for independent circuit and general purposes wherein cables are wrapped individually with a nylon stud in between that acts as a barrier between the two?

FLAT CONDUCTOR CABLE (FCC)

Where is a transformer located?

TRANSFORMER VAULT/TRANSFORMER ROOM

Where is a switchboard or switchgear located?

ELECTRICAL ROOM

What insulation is used for pad mounted dry type transformers?

SILICONE

What insulation is used for outdoor H-frame transformers located at transformer vaults?

OIL-INSULATED

What is a slender freestanding assembly of switches, fuses, or circuits?

SWITCHBOARD

What is a bulky freestanding assembly of switches, fuses, or circuits

SWITCHGEAR

What is a large switch meant for service disconnecting means applied on apartments meter banks?

SERVICE SWITCH

What do you call the switch inside a fluorescent lamp or tube?

STARTER

what part of the fluorescent lamp or tube limits current?

BALLAST

What conduit is NOT threaded, slender, has compression knot, bell, or spigot?

ELECTRICAL METAL CONDUIT (EMC)

What are conduits used for tight areas passing under beams?

CONDULETS

What type of switch is used to control lights from two different switches often installed for the top and bottom of stairways?

THREE-WAY SWITCH

What type of switch controls one fixture, device, or outlet?

SINGLE-POLE SWITCH

Control circuits throughout an entire building or area from one location

MASTER SWITCH

What type of outlet is two-pronged, flat, one side bigger for anchorage purposes?

TYPE A

What type of outlet is a universal outlet with two flat parallel pins and one long round earth pin?

TYPE B

What type of outlet is circular with three plugs primarily used in Thailand?

TYPE O

What amperage would you use for the panel board of a townhouse unit?

60AMP

How many lighting outlets are there for a 15amp current protection?

What type of cable should be used for the convenience outlet of a range?

FLAT CABLE CONDUCTOR (FCC)

What is the purpose of the third wire in a cable installation?

GROUND WIRE

What is the color code for a ground wire?

GREEN

What is the color code for a positive wire?

RED

What is the color code for a negative wire?

BLACK

How many duplex convenience outlets are appropriate for one power circuit?

What is the minimum size of wire for a 60amp circuit breaker?

2.0mm2

What is the standard EMF requirement for residential?

230VAC

A box with a blank cover which serves the purpose of joining one different runs of raceways or cables, and provided with sufficient space for connection and branching of the enclosed conductors

JUNCTION BOX

A sheet metal enclosure for conductors, cables, and bus bars at switchboards, meter centers, distribution centers, and similar points

AUXILIARY GUTTER

On a theatre stage, what do you call the master switch that distinguishes all stage lights simultaneously?

BLACKOUT SWITCH

The portion of an electric wiring that extends beyond the final over current device protecting the circuit

FEEDER LINE

An underground structure used in pulling or splicing electric cables which are laid underground.

CABLE VAULT

In electric wiring a metal plate, water pipe, or other type of conductor buried in the earth in a manner ensuring a good conductive path to the ground.

GROUNDING WIRE

device for storing electric energy

CAPACITOR

a generator of alternating current

ALTERNATOR

What is a surface, material, device, or object that scatters light or sound from a source?

DIFFUSER

device used to transform AC to DC

RECTIFIER/DC GENERATOR

controls the flow of current to the distribution elements

REGULATOR

cap that receives the service drop

ENTRANCE CAP

box used for maintaining light control devices

UTILITY BOX

What is an electromagnetic force flowing between the positive and negative terminals?

FLUX

rate or measure of power used or consumed

WATT

What is an electric device having a resistance which can be adjusted?

RHEOSTAT

What is the unit for quantity of electricity?

COULOMB

Standard length of an electrical metal conduit.

10 ft

what is the unit capacity of a capacitor?

FARAD

Standard size of wire for a circuit line.

NO.12

Standard size of wire for a switch line.

No. 14

Standard frequency of power supplied by the local power utility company like Meralco

60 CYCLES

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

SERVICE DROP

Resistance in alternating current system.

IMPEDANCE

A rigid metal housing for a group of heavy conductors insulated from each other and the enclosure

BUSWAY OR BUSDUCT

A heavy conductor, usually in the form of a solid copper bar, used for collecting, carrying, and distributing large electric currents

BUS OR BUSBAR

An approved assembly of insulated conductors with fitting and conductor terminations in completely enclosed ventilated protective metal housing where the assembly is designed to carry fault current and to withstand the magnetic forces of such current.

BUSWAY OR BUSDUCT

A box with a blank cover which serves the purpose of joining one different runs of raceways or cables and provided with sufficient space for connection and branching of the enclosed conductors

PULL BOX

In a lightning protection system, the combination of a metal rod and its brace or footing, on the upper part of a structure

AIR TERMINAL

A type of raceway specially constructed for the purpose of pulling in or the withdrawing of wires or cables after the conduit is in place

RIGID METAL CONDUIT (RMC)

A unit or assembly units or sections and associated fittings forming a rigid structural system used to support cables

CABLE TRAY

A factory assembly of one or more conductors, each individually insulated and enclosed in a metallic sheath of interlocking metal tape, or a smooth corrugated metallic tube.

METAL CLAD CABLE (Type MC)

A circuit type where components are electrically connected end lto end.

SERIES CIRCUIT

A factory assembly of two or more insulated conductors having an outer sheath of moisture-resistant, flame retardant, nonmetallic material

NON-METALLIC SHEATHED CABLE (Type NM & NMC)

Examples of conductors-on insulator wirings are?

CONCEALED KNOB & TUBE OPEN WIRING ON INSULATORS

A type of switch used for transferring one or more load conductor connections from one power source to another

TRANSFER SWITCH

A type of electric switch consisting of one or more movable copper blades which are hinged and which make contact with stationary forked contract jaws being forced between them

KNIFE SWITCH

A kind of flourescent lamp that does not use starter element

RAPID START FLOURESCENT LAMP

An iron box or casing by which electrical conduit branches are formed

JUNCTION BOX

Minimum service drop of connection line above the ground and from the ground

3.00m

Minimum distance of poles and transformer support located from the road right of way

500mm

Original name of P-Trap

GOOSENECK

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

DISTRIBUTION LINE

The most practical conductor of electricity

COPPER WIRE

A channel system in carrying electrical wire

RACEWAY

An electric conductor consisting of a group of smaller diameter conductor strands twisted together

CABLE WIRE

A device used to convert voltage from higher to lower or vise versa

TRANSFORMER

The minimum allowance clearance from the highest point of the roof to the service drop conductor from NBC

2.50m

To bring down voltage

STEP DOWN TRANSFORMER

Transferring the power load from the building circuitry to standby generator or during brownout

AUTOMATIC TRANSFER SWITCH

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

ARMORED CABLE

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

BRANCH CIRCUIT

Is a conductor, or group of conductors, in switchgear assemblies which serves as a common connection for two or more circuit

BUS (also, BUSBAR)

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

BUSWAY

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

FEEDERS

Protective device for limitting surge voltage on equipment by discharging or by-passing surge current

LIGHTNING ARRESTER

Is a transient electric disturbance in an electric circuit caused by lightning

LIGHTNING SURGE

Is the radial branch connection to a main line

LINE TAP

Minimum load over a given period of time

BASE LOAD

Maximum load consumed by a unit in a stated period of time

PEAK LOAD

Device or equipment which is supended from overhead either by means of the flexible cord

PENDENT

Auxillary conductor used in connection with remote measuring devices for operating apparatus at a distant point

PILOT WIRE

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

PULLBOX

Any channel for holding wires, cables or busbars

RACEWAY

A raceway especially constructed for the purpose of physical protection of conductors, the pulling in or withdrawing of wines or cables after the conduit is in place, and made of metal pipe of standard width and thickness

RIGID METAL CONDUIT (RMC)

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 DROP

The raceway that encloses the service entrance conductors

SERVICE RACEWAY

Cable designed for service under water

SUBMARINE CABLE

Is a transient variation in the current potential or power

SURGE

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

5.5mm2

T stands for?

THERMOPLASTIC

TW stands for?

MOISTURE TEMPERATURE RESISTANT

UF stands for?

UNDERGROUND FEEDER

FEPW Stands for?

FLOURINATED ETHYLENE PROPYLENE MOISTURE RESISTANT

RH stands for?

HEAT RESISTANT RUBBER

RUH stands for?

HEAT RESISTANT LATEX RUBBER

RHW stands for?

HEAT & MOISTURE RESISTANT RUBBER

XHHW stands for?

MOISTURE & HEAT RESISTANT CROSS LINK POLYMER

BX stands for?

ARMORED CABLE

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

ARMOR CABLE (AC)

A factory assemble cable of one or more conductors each individualy insulated and enclosed in a mettalic sheath of interlocking tape of smooth or corrugated tube. This type of cable is especially used for service feeders, branch circuit and for indoor, outdoor work

METAL CLAD CABLE (MC)

Is a factory assembly of one or more conductors insulated with highly compressed refractory mineral insulation enclosed in a liquid and gas tight continous copper sheath. This type of cable is used in dry, wet or continously moist location as service feeders or branch circuit

MINERAL INSULATED CABLE (MI)

Is a also a factory assembly of two or more insulated conductors having a moisture resistant, flame retardant and non metallic material outer sheath. This type is used specifically for one or two family dwellings not exceeding 3 storey building

NON METALLIC SHEATHED CABLE (NM)

This type of cable is factory assembly of two or more insulated conductors in an extruded core of moisture resistant and flame retardant material covered within an overlapping spiral metal tape. This type is used in hazardous locations and in cable trays or in raceways

SHIELDED NON METALLIC SHEATHED CABLE (SNM)

Is an assembly of parallel conductors formed integrally with insulating material web designed especially for field installation in metal surface or raceways

FLAT CABLE ASSEMBLY (FC)

Consist of three or more flat copper conductor placed edge to edge separated and enclosed with an insulating assembly. This type of cable is used for general purposes such as: appliance branch circuit, and for individual branch circuits, especially in hard smooth continous floor surfaces and the like

FLAT CONDUCTOR CABLE (FCC)

Type of switch where pilot light inside a lit to guide the person inside

ILLUMINATED SWITCH

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

WINDMILL

Alternating 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 the machine is designed

SINGLE PHASE ALTERNATING CURRENT

Alternating current where the alternator comprises of windings mounted at right angles to each other and provided with separate external connections current waves will be produced and each of which will be at its maximum when the other is zero

TWO PHASE ALTERNATING CURRENT

What is the unit of capacitance?

FARAD

UTIL 2: ELECTRICAL & OTHER POWERED SYSTEMS Flashcards

(256 cards)