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ELECTRICIAN DICTIONARY

[A]

Acid Rain:

Rain that has become acidicdue to the emission of sulfur

dioxide and nitrogen oxides.

Air Leakage Rating:

The air leakage rating is a

measure of how much air

leaks through the crack

between the window sash

and frame. The rating

reects the leakage from a

window exposed to a 25-

mile-per-hour wind, and is

measured in cubic feet per

minute per linear foot of

sash crack.

Alternating Current (AC):

Electric current which

changes direction with a

regular freuenc!. "omestic

mains in the #$ ha%e a

freuenc! of 5& 'ert(.

Alternator:

)n electric generator

designed to produce

alternating current. #suall!

consists of rotating parts

which created the changing

magnetic *eld to produce

the alternating current.

Amient Tem!erature:

The surroundingtemperature of an area.

American "ire #auge:

) standard measure which

represents the si(e of wire. The larger the number, the

smaller the wire.

)bbre%iated )+.

Am!acit$:

The current, in amperes,

that a conductor can carr!

continuousl! under the

conditions of use without

exceeding its temperature

rating.

Am!ere:

) t!pe of electric current

produced b! one %olt

applied across a resistance

of one ohm. t is also eual

to the ow of one coulomb

per second. amed after

/rench ph!sicist )ndre 0.

)mp1re 34.

Analog:

) measuring or displa!

methodolog! which uses

continuousl! %ar!ing

ph!sical parameters. n

contrast, digital represents

information in discrete

binar! form using onl! (eros

and ones.

Annual %uel &tili'ation

Ecienc$ (A%&E):

)n indication of how well afurnace con%erts energ!



into usable heat. The rating

is expressed as a

percentage of the annual

output of heat to the annual

energ! input to the furnace.

A!!liance:

#tili(ation euipment,

generall! other than

industrial, normall! built in

standardi(ed si(es or t!pes,

that is installed or

connected as a unit to

perform one or more

functions such as clothes

washing, air conditioning,

food mixing, deep fr!ing,

etc.

[]

atter$:

) group of two or more cellsconnected together to

pro%ide electrical current.

6ometimes also used to

describe a single cell which

con%erts chemical energ! to

electrical current.

lo*er Door+:

Energ! contractors use

blower doors to see how

much air leaks through

windows, doors, and other

places in !our house. The

blower door is a large board

that blocks the front door of

!our house. ) powerful fan

installed in the door draws

the air out of !our house

and causes a strong draft

inside where e%er the air is

leaking in. This can help the

contractor locate the air

leaks, and gi%es a good

o%erall indication of how

7leak!7 !our house is.

ranc, Circuit:

The circuit conductors

between the *nal

o%ercurrent de%ice

protecting the circuit and

the outlet8s9.

ranc, Circuit- A!!liance:

) branch circuit that

supplies energ! to one or

more outlets to which

appliances are to be

connected, and that has nopermanentl! connected

lightning *xtures that are

not a part of an appliance.

ro*nout:

) reduction in %oltage

and:or power when demand

for electricit! exceeds

generating capacit!. The

term brownout is misleading

because customers

generall! do not notice the

reduction, except when it

a;ects sensiti%e electronic

euipment.

T& (riti+, T,ermal &nit):



) <T# is the standard unit

for measuring the uantit!

of heat energ! such as the

heat content of fuel. t is the

amount of heat energ!

necessar! to raise the

temperature of one pound

of water one degree

/ahrenheit 84=2 <T#>s?

k+h9.

[C]

Cainet:

)n enclosure designed

either for surface mounting

or ush mounting and is

pro%ided with a frame, mat,

or trim in which a swinging

door or doors are or can be

hung.

Ca!acitor:

) de%ice that stores

electrical charge usuall! b!

means conducting plates or

foil separated b! a thin

insulating la!er of dielectric

material. The e;ecti%eness

of the de%ice, or its

capacitance, is measured in

/arads.

Cell:

a single de%ice which

con%erts chemical energ!

into electrical current.

6ometimes also referred to

as a batter!.

Circuit reaker:

) de%ice designed to open

and close a circuit b! non-

automatic means and to

open the circuit

automaticall! on a pre-

determined o%ercurrent

without damage to itself

when properl! applied

within its rating.

Circuit E.ten+ion+:

To extend or add-on to an

existing circuit to pro%ide an

additional power source.

Code Correction+:

@rocedure designed to

eliminate wiring conditions

that do not meet ationalElectrical Aode

reuirements and safet!

conditions.

Cold/"eat,er alla+t:

Aompact uorescent light

bulbs reuire a ballast to

regulate the %oltage of the

electricit! that is applied to

the gas inside the lamp.

<elow-free(ing weather can

ad%ersel! a;ect the

electronic components in

these ballasts, causing most

compact uorescent bulbs

to appear dim in cold

weather. Aold-weather



ballasts compensate for this

problem and keep the bulb

glowing brightl!, e%en in

weather as cold as -&B/ 8-

24BA9.

Conductor:

Bare - ) conductor ha%ing

no co%ering or electrical

insulation whatsoe%er.

Covered - ) conductor

encased within material of

composition and thickness

that is CT recogni(ed b!

this Code as electrical

insulation.

Insulated - ) conductor

encased within material of

composition and thickness

that is recogni(ed b! thisCode as electrical insulation.

Continuou+ Load:

) load where the maximum

current is expected to

continue for 4 hours or

more.

Controller:

) de%ice or group of de%ices

that ser%es to go%ern, in

some predetermined

manner, the electric power

deli%ered to the apparatus

to which it is connected.

Current:

The ow of electricit!

commonl! measured in

amperes.

[D]

Deciel:

) logarithmic measure of

the ratio of two uantities.

)bbre%iated d<. /or

electrical power, d< ? &

x log& @:@2. /or electric

%oltage or current, d< ?

2& x log& E:E2.

De0ice:

) unit of an electrical

s!stem that is intended to

carr! but not utili(e electric

energ!.

Diode:

)n electronic semiconductor

de%ice that predominantl!

allows current to ow in onl!

one direction.

Direct Current (DC):

Aircuit in which the ow of

electrons is in one direction

onl!, from anode to

cathode.

Di+triution E1ui!ment:

) de%ice designed to

pro%ide electricit! to

multiple connections.

D*elling:

Cne or more rooms for the

use of one or more personsas a housekeeping unit with



space for eating, li%ing, and

sleeping, and permanent

pro%isions for cooking and

sanitation.

[E]

Electric Re+i+tance 2eating:

) t!pe of heating s!stem

that generates heat b!

passing current through a

conductor, causing it to heat

up. These s!stems usuall!

use baseboard heaters,

often with indi%idual

controls. The! are ineDcient

and are best used as a

backup to more eDcient

options, such as solar

heating or a heat pump.

Electronic alla+t+:

)n electronic de%ice that

regulates the %oltage of

uorescent lamps.

Aompared to older magnetic

ballasts, electronic ballasts

use less electricit! and are

not prone to the ickering

and humming e;ects

sometimes associated with

magnetic ballasts.

Energ$ 3a0ing De0ice+:

"e%ices utili(ed within a

dwelling designed to more

eDcientl! make use of

energ! sources while

pro%iding heating, cooling,

and light.

Enclo+ure:

The case or housing of an

apparatus, fence, or walls

that pre%ent persons from

accidentall! contacting

energi(ing parts, or to

protect the euipment from

ph!sical damage.

Energi'ing:

Electricall! connected to a

source of potential

di;erence.

Energ$:

The capacit! for, or the

abilit! to do, mechanical

work. Electrical energ! is

measured in kilowatt-hours

for billing purposes.Energ$ Ecienc$ Ratio (EER):

The ratio of the cooling

capacit! of the air

conditioner, in <tu per hour,

to the total electrical input

in watts under test

conditions speci*ed b! the

)ir-Aonditioning and

Refrigeration nstitute.

Energ$ 3a0ing De0ice+:

"e%ices utili(ed within a

dwelling designed to more

eDcientl! make use of

energ! sources while

pro%iding heating, cooling,

and light.

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E1ui!ment:

) general term including

materials, *ttings, de%ices,

appliances, *xtures,

apparatus, and the like used

as a part of, or in connection

with, an electrical

installation.

[%]

%ault:

) short circuit in an

electrical s!stem.

%itting:

)n accessor! such as a

locknut, bushing, or other

part of a wiring s!stem that

is intended primaril! to

perform a mechanical rather

than an electrical function.

%luore+cent Lam!+:

/luorescent lamps produce

light b! passing electricit!

through a gas, causing it to

glow. The gas produces

ultra%iolet light a phosphor

coating on the inside of the

lamp absorbs the ultra%iolet

light and produces %isible

light. /luorescent lamps

produce much less heat

than incandescent lamps

and are more energ!eDcient. Finear uorescent

lamps are used in long

narrow *xtures designed for

such lamps. Aompact

uorescent light bulbs ha%e

been designed to replace

incandescent light bulbs in

table lamps, oodlights, and

other *xtures.

%re1uenc$:

n alternating current, the

rate at which the current

changes direction. Cne

complete c!cle is a unit of

'ert(, named after the

@h!sicist who researched

AC 8)lternating Aurrent9.

The standard freuenc! in

the #6 is & '(.

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[#]

#arage: Gguh-ra,',, -ra,4 or,especially Brit., gar-iH, -ah(hI -noun, verb,

) building or portion of a

building which one or more

self-propelled %ehicles

carr!ing %olatile ammable

liuid for fuel or power are

kept for use, sale, storage,

rental, repair, exhibition, or

demonstration purposes.

ExampleJ

0! home has a garage where

keep m! car

#enerator: G 4en-uh-re!-terI –

noun

) rotating machine which

con%erts mechanical energ!

into electrical energ!. n the

automoti%e industr!

traditional terminolog! uses

generator to refer to onl!

those machines designed to

produce dc current through

brushes and a commutator

8as opposed to alternator9.

ExampleJ

0an! hospitals ha%e emergenc!

power generators

#loal "arming: Gglo,-buh l

wawrm-ingI–noun

lobal warming is the

gradual increase in global

temperatures caused b! the

emission of gases that trap

the sun>s heat in the Earth>s

atmosphere. ases that

contribute to globalwarming include carbon

dioxide, methane, nitrous

oxides, 8A/A>s9

chlorouorocarbons, and

halocarbons 8the

replacements for A/A>s9.

The carbon dioxide

emissions are primaril!

caused b! the use of fossil

fuels for energ!.



ExampleJ

lobal warming is changing the

climate of our planet

#rid: GgridI –noun

n an electrical s!stem, a

term used to refer to the

electrical utilit! distribution

network.

ExampleJ

Fima used a large electric grid for

power distribution

#round ("ire): GgrKunI - noun

) conducting connection,

whether intentional or

accidental, between an

electrical circuit or

euipment and the earth, or

to some conducting bod!

that ser%es in place of the

earth.

ExampleJ

)ll homes must ha%e a grounding.

#rounded: GgrKun-dədI -

ad4ecti0e

Aonnected to earth or to

some conducting bod! that

ser%es in place of the earth.

ExampleJ

This machine is grounded b! a lot

cables

[2]

2eater: GhL-tMrI - noun

) heat source 8gas or

electric9 used to adHust the

temperature inside a

dwelling from a cold to a

warm condition.

ExampleJ



+hen ha%e cold turn on m!

heater

2ea0$ Dut$: [he-%L-dN-tL, -d!N]

/ ad4ecti0e

) lightning impulse

classif!ing current categor!

for distribution class

arresters de*ned b!

)6:EEE A2.. ) hea%!

dut! rated arrester has a

&,&&& amperage impulse

%alue crest 8refer to normal

dut!9.

2ert' (2'): GhMrts, hertsI - noun

The unit of freuenc! 8not

Hust electricit!, but also, for

example, sound wa%es.

ExampleJ

need an engine of =&& hert(

2ig,/Tec, Troule+,ooting: GhO

tek trM-bMl PshNt-ingI - noun

) procedure performed b! a

trained technician for the

purpose of locating and

identif!ing electrical

problems within an

electrical s!stem.

ExampleJ

This person is trained in 'igh-Tech

Troubleshooting

2oi+t*a$: [hoist we!] / noun

)n! shaftwa!, hatchwa!,

well hole, or other %ertical

opening or space in which

an ele%ator or dumbwaiter

is designed to operate.

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ExampleJ

)n ele%ator works in his hoistwa!.

2or+e!o*er: [,a*r+-pou-er] /

noun

) unit of power eual to Q=

watts.

ExampleJ0! car has 25& horsepower ofpower

[I]

Im!edance: [im-!eed-ns] / noun

The total e;ects of a circuit

that oppose the ow of an

)A current consisting of

inductance, capacitance,

and resistance. t can be

uanti*ed in the units of

ohms.

Im!ul+eJ G im-puhlsI / noun

) current surge.

Incande+cent Lig,t ul+: [in-

kuhn-de+-uhnt P lah!t - buhlb] /

noun

ncandescent light bulbs

produce light b! passing

electricit! through a thin

*lament, which becomes

hot and glows brightl!.

ncandescent light bulbs are

less energ!-eDcient than

uorescent lamps, because

much of the electrical

energ! is con%erted to heat

instead of light. The heat

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produced b! these bulbs not

onl! wastes energ!, but can

also make a building>s air

conditioning s!stem work

harder and consume more

energ!.

In5rared Camera+: Gin-fruh-red/

kam-er-uh] - noun

Energ! contractors use

infrared cameras to look at

the heat leaking into or out

of !our house. The infrared

camera 7sees7 the heat and

can show 7hot spots7 where

a lot of heat is being lost.

This helps to identif! the

places where !our home>s

energ! eDcienc! can be

impro%ed.

In+ulation: [in-suh-le!-shuhn] /

noun

) material ha%ing a high

resistance to the ow of

electric current insulation

o%er underground conductor

is made of either E@R or

F@E material.

In+ulator: Gin-suh-le!-terI - noun

)n! material which does not

allow electrons to ow

through it.



Interru!ter: Gin-tuh-ruhp-terI -

noun

)n element designed to

interrupt speci*c currents

under speci*ed conditions.

In0erter: Gin-%ur-terI / noun

)n electrical de%ice which is

designed to con%ert direct

current into alternating

current. This was originall!

done with rotating machines

which produced true sine

wa%e ac output. 0ore

recentl! this con%ersion has

been performed more

economicall! and eDcientl!

using solid state electronics.

'owe%er, except for the

most expensi%e models,

these de%ices usuall! do not

produce perfect sine wa%e

output. This sometimes can

result in electromagnetic

interference with other

sensiti%e electronic de%ices.

Ion:

)n on is a positi%el! or

negati%el! charged atom or

molecule.

[6]

6oule:

) unit of work or energ!

eual to one watt for one

second. Cne kilowatt hour

euals 4,&&,&&& Soules.

amed after Sames @. Soule,

an English ph!sicist 33.

6oule7+ La*:

"e*nes the relationship

between current in a wire

and the thermal energ!

produced. n 3=an English

ph!sicist Sames @. Soule

experimentall! showed that

+ ? 2 x R x t where is the

current in the wire in

amperes, R is the resistance

of the wire in Chms, t is the

length of time that the

current ows in seconds,



and + is the energ!

produced in Soules.

[8]

8ilo0olt:

) #nit of electrical potential

eual to ,&&& %olts.

)bbre%iated kU or $U.

8ilo*att (k"):

Real power deli%ered to a

load 8+ x ,&&& U)9.

8ilo*att/,our:

) unit of energ! or work

eual to one kilowatt for one

hour. )bbre%iated as kwh or

$+'. This is the normal

uantit! used for metering

and billing electricit!

customers. The price for a

kwh %aries from

approximatel! = cents to 5

cents. )t a &&V con%ersion

eDcienc!, one kwh is

eui%alent to about = uid

ounces of gasoline, 4:

pound F@, 4 cubic feet

natural gas, or := pound

coal.

[L]

Limit 3*itc,:

) switch that is operated b!

some part or motion of a

power-dri%en machine or

euipment to alter the

electric circuit associated

with the machine or

euipment.

Li1uid/%illed Tran+5ormer:

) transformer in which the

core and coil are immersed

in a liuid which acts as

both a cooling and

insulating medium.

Li0e 9art+:

Electric conductors, buses,

terminals, or components

that are uninsulated or

exposed and an electric

shock ha(ard exists.

Load:

The load of a transformer is

the power, in kU) or %olt-

amperes, supplied b! the

transformer.8Lagging Load9 inducti%e

t!pe load.

8Leading Load9 capaciti%e

load.

Loadreak:

The abilit! of a switching

de%ice to disconnect a load

current without damage.

Load Center:

6ource for all power to the

home. )ll circuits originate

from the 7Foad Aenter7 or

76er%ice @anel.7 Aircuit

breakers are located within

this panel.

Load Cur0e:



) cur%e showing

instantaneous demand 8kU)

or 0U)9 %ersus time. Aur%es

are usuall! plotted for one

da! or one week.

ntegrating the load cur%e

will pro%ide the amount of

energ! consumed.

Load %actor:

Represents how eDcientl!

the electrical s!stem

capacit! is being used. The

higher the load factor the

higher the eDcienc!.

Load 3*itc,ing:

Transferring the load from

one source to another.

Lo* oltage:

) wiring s!stem that

pro%ides power to someelectronic de%ices operating

on a %oltage le%el much

lower than the standard &

%olts. 6uch de%ices might be

doorbells and thermostats.

[;]

;etal Enclo+ed:

6urrounded b! a metal case

of housing, usuall!

grounded.

;etalclad:

"e%ices in which the

conducting parts are

entirel! enclosed in a metal

casing.

;otor+:

Electronic de%ice used to

mo%e, switch, or adHust one

or more of the s!stems

within a dwelling.

[N]

National Electrical Code (NEC):

) code:guideline used for

the safeguarding of people

and propert! from ha(ards

related to the use of

electricit!. Aompliance with

this code along with proper

maintenance will result in

an installation essentiall!

free from ha(ard.

)bbre%iated EA. The EA

was *rst de%eloped in 3Q

as a result of the e;orts of

%arious insurance, electrical,

architectural, and allied

interests. t is sponsored

and regularl! updated b!

the ational /ire @rotection

)ssociation.

Neutral:

The Hunction point of the

legs in a +!e circuit.

Neutral #rounding Re+i+tor:

) grounding de%ice, the

principal element of which is

resistance, which is used to

connect the neutral point of

the transformer to earth.Normal Dut$:



) lightning impulse

classif!ing current categor!

for distribution class

arresters de*ned b!

)6:EEE A2.. ) normal

dut! rated arrester has

5&&& amperage impulse

%alue crest 8refer to hea%!

dut!9.

[O]

O,m:

The unit of measure for

resistance.

Outlet:

) point on the wiring s!stem

at which current is taken to

suppl! utili(ation

euipment.

O0erload:

Cperation of euipment in

excess of normal, full-load

rating, or of a conductor in

excess of rated ampacit!

that, when it persists for a

suDcient length of time,

would cause damage or

dangerous o%erheating. )

fault, such as a short circuit

or ground fault, is not an

o%erload.

O0er0oltage:

) %oltage abo%e the normal

rated %oltage or the

maximum operating %oltageof a de%ice or circuit. )

direct test o%er%oltage is a

%oltage abo%e the peak of

the line alternating %oltage.

[9]

9eak Demand:

The maximum integrated

demand during a time

period.

9,a+e:

Alassi*cation of an )A

circuit usuall! single-phase,

two wire or three wire two-

phase, three wire or four

wire or three-phase, three

wire or four wire.

9o*er:

The rate at which work is

performed or that energ! is

transferred. Electric power is


watts or kilowatts. ) power

of Q= watts is eui%alent to

horsepower.

9o*er Outage:

)n interruption of power.

9o*er Outlet:

)n enclosed assembl! that

ma! include receptacles,

circuit breakers,

fuseholders, fused switches,

buses, and watt-hour meter

mounting means intended

to suppl! and control power

to mobile homes,recreational %ehicles, park

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trailers, or boats or to ser%e

as a means for distributing

power reuired to operate

mobile or temporaril!

installed euipment.

9rimar$ oltage Rating:

"esignates the input circuit

%oltage for which the

primar! winding is

designed.

9uncture:

Term used when a disrupti%e

discharge occurs through a

solid dielectric. ) disrupti%e

discharge in a solid

dielectric produces a

permanent loss of dielectric

strength in a liuid of

gaseous dielectric, the loss

ma! be onl! temporar!.

[<]

<uali=ed 9er+on:

Cne familiar with the

construction and operation

of the euipment and the

ha(ards in%ol%ed.

[R]

Rain!roo5:

Aonstructed, protected, or

treated so as to pre%ent rain

from interfering with the

successful operation of the

apparatus under speci*ed

test conditions.

Rating:

The rating of an arrester -

either dut! c!cle or 0ACU

rating.

Reacti0e 9o*er:

The mathematical product

of %oltage and current

consumed b! reacti%e loads.

Examples of reacti%e loads

include capacitors and

inductors. These t!pes of

loads when connected to an

ac %oltage source will draw

current, but since the

current is &o out of phase

with the applied %oltage

the! actuall! consume no

real power in the idealsense.

Reactor:

) de%ice for introducing

inducti%e reactance into a

circuit for motor starting,

operating transformers in

parallel, and controlling

current.

Real 9o*er:

The rate at which work is

performed or that energ! is

transferred. Electric power is


watts or kilowatts. The term

real power is often used in

place of the term power



The ratio of the number of

turns in the high %oltage

winding to that in the low

%oltage winding.

[&]

&ninterru!tile 9o*er 3u!!l$:

) de%ice that pro%ides a

constant regulated %oltage

output in spite of

interruptions of the normal

power suppl!. t includes

*ltering circuits and is

usuall! used to feed

computers or related

euipment which would

otherwise shutdown on brief

power interruptions.

)bbre%iated #@6.

&ni0er+al Ta!+:

) combination of six primar!

%oltage taps consisting of

four 2-:2V /A< and two

2-:2J /A), co%ering 5V

%oltage range.

[]

a!or arrier:

)lso called a %apor retarder,

this is a material that

retards the mo%ement of

water %apor through a

building element 8such as

walls, oors, and ceilings9

and pre%ents metals from

corroding and insulation and

structural wood from

becoming damp.

entilated:

@ro%ided with a means to

permit circulation of air

suDcient to remo%e an

excess of heat, fumes, or

%apors.

olt:

The electrical potential

di;erence or pressure

across a one ohm resistance

carr!ing a current of one

ampere. amed after talian

ph!sicist Aount )lessandro

Uolta Q=5-32Q.

olt Am!ere:

) unit of apparent power

eual to the mathematicalproduct of a circuit %oltage

and amperes. 'ere,

apparent power is in

contrast to real power. Cn

ac s!stems the %oltage and

current will not be in phase

if reacti%e power is being

transmitted. #suall!

abbre%iated U).

["]

"atertig,t:

Aonstructed so that

moisture will not enter the



enclosure under speci*ed

test conditions.

"ater!roo5:

Aonstructed or protected so

that exposure to the

weather will not interfere

with successful operation.

"att:

) unit of power eual to the

rate of work represented b!

a current of one ampere

under a pressure of one

%olt. amed after the

6cottish engineer Sames

+att, 3.

"iring:

) distribution network of

wire that conducts

electricit! to receptacles,

switches and appliances

throughout a building:home

to pro%ide electricit! where

needed.

",ole/2ou+e %an:

) large fan used to %entilate

!our entire house. This is

usuall! located in the

highest ceiling in the house,

and %ents to the attic or the

outside. )lthough whole-

house fans are a good wa!

to draw hot air from the

house, !ou must be careful

to co%er and insulate them

during the winter, when

the! often continue to draw

hot air from people>s

houses.

ELECTRICAL TOOL3

0ost electrical wiring Hobs arerelati%el! eas! to handle with afew inexpensi%e tools.

Circuit te+ter (oltage tick) /6imple and inexpensi%e, acircuit tester plugs into acon%entional outlet and will tell!ou whether the circuit is 7hot78charged9 or whether it>sproperl! grounded.

Continuit$ te+ter / t can beused to determine whetherwiring is broken and whetherelectrical circuits are complete.

Lineman's pliers / ) pair of

these is the best tool to use forcutting hea%! wire or cable and



twisting wire ends together. Totwist two wires together, holdthem side b! side with onehand, their stripped endsaligned, and point the blunt end

of the pliers in line with them,clamp down, and twist in aclockwise direction.

Long-nose pliers / Fong-nosepliers are great for bendingsmall loops at wire ends or forcutting o; wires 8most include awire-cutting section9. #se thepointed end of the pliers toform a smooth, 4:=-circle at awire>s end, designed to circlearound a screw terminal8alwa!s hook the wire onto theterminal with the end of thebend sweeping clockwise fromthe wire9.

;ulti/meter / Wou>ll want toha%e a multi-meter on hand formaking a %ariet! of continuit!checks, checking %oltage, and

other similar tasks. Read themanufacturer>s instructions fora thorough understanding of techniues. 0ulti-meters, whichdo the Hob of ohm meters, %oltmeters, and related tools, aresold at consumer electronicsstores.

Neon 0oltage te+ter / Thishelpful little tool can tell !ouwhether wires are 7hot7 or not.+hen using it, be sure to holdonl! the insulated probes- - notthe bare parts. Touch one probeto what !ou suspect is a hotwire and the other probe to aneutral wire or grounding wire8or grounded metal electricalbox9. f the small light glows,the circuit is li%e.

3cre*dri0er+ / Wou>ll want anassortment of screwdri%ers withinsulated rubber grips.<e sure to get both at-bladedand @hillips-head dri%ers.

Wire stripper / 0ost electricalwires run inside a slee%e of insulation, a plastic, rubber orpaper coating that pre%entsbare conductors from shorting



against each other or shocking!ou. +hen splicingwires8connecting two or morewires together9 or connectingthem to de%ices, !ou must

remo%e the insulation, arelati%el! simple Hob when !ouha%e the right tool-- aninexpensi%e wire stripper.

The stripper should be set sothat it cuts the insulation but

doesn>t nick the wire 8or use theslot that matches the wireconductor>s si(e9. 'old the wirewith one hand, bite into theinsulation with the stripper,

about :2 inch to 4:= inch fromthe wire>s end, rock the stripperback and forth, and pull theinsulation o; the end of thewire.

electrician_dictionary hecho por raf

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