Introduction to Electrical Installation

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Introduction to ElectricalIntroduction to Electrical

InstallationInstallation

Introduction to ElectricalIntroduction to Electrical

InstallationInstallation

Mohamad Taib bin Miskon


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ContentContentContentContent Basic concepts of electrical power, earthing,

distribution systems and wiring - taib Basic terms/function : DFB,MCCB,MCB,RCCB,Main

switch plug, socket, fius etc. -taib

, .. -

Wiring diagram for a lighting circuit. - shahran

The wiring of a one-way and two-way switchcontrolling lamp A and B - shahran

The inspection and testing method for a wiring circuit -shahran


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Introduction to electrical termsIntroduction to electrical termsIntroduction to electrical termsIntroduction to electrical terms

Basic terms/components :

Incoming/Fuse

DB/DFB

RCD/RCCB/ELCB

MCB

Plug top/ socket outlet Extension socket


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IncomingIncomingIncomingIncoming

Single Phase Three Phase


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IncomingIncomingIncomingIncoming


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Distribution Board(DB)Distribution Board(DB)Distribution Board(DB)Distribution Board(DB)


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Distribution Board(DB)Distribution Board(DB) cont.cont.Distribution Board(DB)Distribution Board(DB) cont.cont.

Incomer can be switchfuse or

main fuse or MCCB

Incomer can be switchfuse or

main fuse or MCCB

RCD Residual Current Device

Or

RCCD Residual Current Circuit Breaker

Or

ELCB Earth leakage Circuit Breaker

RCD Residual Current Device

Or

RCCD Residual Current Circuit Breaker

Or

ELCB Earth leakage Circuit Breaker


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Distribution Board(DB)Distribution Board(DB)Distribution Board(DB)Distribution Board(DB)

Single Phase Three Phase


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IncomerIncomer SwitchfuseSwitchfuseIncomerIncomer SwitchfuseSwitchfuse

To protect and isolatecircuit against

overloads and short

circuit. Use in domestic,

commercial and light

industrial installations


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IncomerIncomer MouldedMoulded Case CircuitCase Circuit

breaker (MCCB)breaker (MCCB)

IncomerIncomer MouldedMoulded Case CircuitCase Circuit

breaker (MCCB)breaker (MCCB)

To protect conductors

a ainst overloads and

short circuits currentsin electrical distribution

systems.


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RCDRCD Residual Current DeviceResidual Current Device

RCCBRCCB Residual Current operated Circuit BreakerResidual Current operated Circuit Breaker

ELCBELCB Earth Leakage Circuit BreakerEarth Leakage Circuit Breaker

RCDRCD Residual Current DeviceResidual Current Device

RCCBRCCB Residual Current operated Circuit BreakerResidual Current operated Circuit Breaker

ELCBELCB Earth Leakage Circuit BreakerEarth Leakage Circuit Breaker

To open a circuitautomatically in the

leakage between phaseand earth and/or neutraland earth. With effective

protection againsthuman contact to earthpoints.


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MCBMCB Miniature Circuit BreakerMiniature Circuit BreakerMCBMCB Miniature Circuit BreakerMiniature Circuit Breaker

To protect conductors

a ainst overloads and

short circuits current inthe electrical

distribution system


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Socket OutletSocket OutletSocket OutletSocket Outlet

An electric

lu connects

mechanically to amatching socket

Commonly have 16A

socket and 13A socket


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Plug TopPlug TopPlug TopPlug Top


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Final CircuitFinal CircuitFinal CircuitFinal Circuit


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LoadsLoadsLoadsLoads

40watt

300watt

500watt 100watt

70watt


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Load distribution at homeLoad distribution at homeLoad distribution at homeLoad distribution at home

40watt40watt 40watt 40watt

6Amps

Berapa

banyak??


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Load distribution at homeLoad distribution at homeLoad distribution at homeLoad distribution at home

80watt

100watt

16Amps+

70watt

100watt

Berapa

banyak??


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Some simple jobs you can do yourselfSome simple jobs you can do yourself

changing an electric light bulb11

changing the starter in a fluorescent lightfitting

replacing a fuse

resetting a circuit breaker or safety switch

22

33

44


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Dangerous Work and ConditionDangerous Work and ConditionDangerous Work and ConditionDangerous Work and Condition

Burntout

plug

top.

Damaged switch

Burntout life

wire

Improper connection


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Safety tips at homeSafety tips at homeSafety tips at homeSafety tips at home


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Pastikan tiada kelengkapan lain yang berkuasa

tinggi seperti cerek elektrik dan sebagainya

menggunakan soket alir keluar yang sama.

Elakkan membaiki wayar yang telah pecah atau

terkoyak, gantikan je dengan yang baru

Jangan sambungkan kepada banyak

kelengkapan sehingga melampaui beban yang

ditetapkan. Ini akan menyebabkan wayar

tersebut menjadi panas dan ia boleh

menyebabkan kebakaran

Kod sambungan direkabentuk hanya untuk

pendawaian sementara sila pasang soket alir

keluar yang baru untuk penggunaan kekal.


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Energy savings tipsEnergy savings tipsEnergy savings tipsEnergy savings tips

Improve your power factorImprove your power factor

Install capacitors (KVAR Generators)

Corrector

Avoid operating equipment above its rated voltage.

Replace standard motors as they burn out with energy

efficient motors


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Schedule operating equipment during off-peak hoursDuring peak hours (8.00 a.m. to 10.00 p.m.), TNB has to generate a higher

amount of electricity to meet the demands of our usual work day. As the

day progresses, more electricity is required, so more power plants are fired

up to generate more supply.

During off-peak hours when most of us are asleep, TNB generates less

electricity, but most of the time this supply is not used to its fullest.

By re-scheduling your operations to run heavy equipment during off-peak

hours, you will reduce the amount of electricity required during the day,

and making the most of electricity generated at night. Fewer power plants

will need to be turned on, which is good for the environment.

With TNB's Off-Peak Tariff Rider (OPTR) scheme, you can also enjoy up to

20% savings for electricity usage during off-peak hours.


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Going somewhere? Turn off your computers and

home equipment

Turn off your computers or set workstations to hibernate mode. Turn

off rinters monitors and an other office e ui ment when not in use

especially overnight and on weekends

Turn off all the office and building lights at the end of the day to enjoy

big energy savings

Remind others to turn out the lights and turn off equipment when theyleave

Did you know?

Laptops use up to 80 percent LESS energy than a standard desktop

computer!


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Air conditioning - Cool, or Freezing?

Raising the temperature settings by 1C can visibly affect your total

electricity bill at the end of the month, and probably without anyone

even noticing the difference.

While wearing sensible work attire, a cool 24-26C should be enough

to keep everyone comfortable in the office, and mean significant

savings in electricity.


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Terima kasih..

soa an


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Tnb taarif

Introduction to Electrical Installation

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