introduction to electrical installation
TRANSCRIPT
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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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Safety tips at homeSafety tips at homeSafety tips at homeSafety tips at home
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Safety tips at homeSafety tips at homeSafety tips at homeSafety tips at home
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Safety tips at homeSafety tips at homeSafety tips at homeSafety tips at home
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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Energy savings tipsEnergy savings tipsEnergy savings tipsEnergy savings tips
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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Energy savings tipsEnergy savings tipsEnergy savings tipsEnergy savings tips
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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Energy savings tipsEnergy savings tipsEnergy savings tipsEnergy savings tips
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