ELECTRIFICATION AND
CCTV
Presented By
Sanish Bhochhibhoya
Tutor
Akarshaa Khawas
Department of Civil Engineering
IOE, Tribhuvan University26th June,2018 1

Students will be able to learn the followings things:
Objectives of the Presentation
2
Importance of Electrical Service
Purposes of Electrical Service
Precautions for Electrical Works
Requirements of Electrical Service
CCTV purposes and improvements
Telephone Network

Presentation Layouts
3
Importance of Electrical Service in Building
Distribution System
Protective System
Electricity Flow
Consideration for Home Lightning
Precautions for Electrical Works
Introduction to CCTV
Introduction to Telephone Network

4
Electrification
• The process of powering by electricity
• Usually associated with changing over from another
power source
• Wind turbine, Hydroelectricity, Geothermal energy and
solar energy are main power sources for electricity
generation

Importance of Electrical Service in Building
5

a. Lighting:
• Consume electrical energy and deliver light energy.
• Examples of sources are CFL, Tubelight etc.
b. Heating:
• Mechanical power ≈ 70% of electrical input.
• Used in ovens, pumps, air conditioners, irons, lifts
c. Electronics:
• Science of converting light, sound, etc into
electrical signal and modifying these signals.
• Electronics devices operated by using electricity.
Electrical
Energy
Other Form
of Energy
Electrical Sources
6

`
HIGH VOLTAGE
NATIONAL GRID
HIGH VOLTAGE OF 132 KV
11 KV,
3 PHASES,
50Hz
1 PHASE == 230 V
3 PHASES == 400 V
AC at 50 cycles/sec
GENERATING STATION
PIC SOURCE-
ZZCONTROLS.COM
7
HIGH VOLTAGE LINES
PIC SOURCE- USGS.COM
ELECTRIC SUBSTATION
PIC SOURCE- GOHZ.COM
LOCAL TRANSMISSION
PIC SOURCE-
WATERHEATERTIMER.ORG
CONSUMERS
PIC SOURCE-
HOMEDSGN.COM
•NEA
SYSTEM OF
FUSE
5,16,30,100A
METER
BOX
CONSUMER
UNIT
SUPPLY
Electricity Flow

Distribution System:
• Fix the size through survey of the load requirements.
• Done by planning of distribution and sub-distribution
system.
• Electricity is fed into the appliances comprises lying of
cables and conductors, distribution boards, switches
and installing of protective system.
8

Concealed Wiring
• Channels in walls and
ceilings during construction
• Conduct pipes fixed on
channel
Surface Wiring
• Run over walls or under
ceilings
• PVC channels to cover
wires
Wiring system
• Cables are drawn inside conduits to protect them from
injury.
• Conduits may be of metal or hard PVC or polythene
pipe in the case of concealed wiring.
• Wire may be concealed or surface.
9

Protective System:
• May cause fire due to short circuiting.
• Means must provide to cut it off when
current exceeds safe value.
• Provide fuse breaker which break the circuit
by themselves.
• Now a day’s MCB(miniature circuit
breakers) are widely used.
• Main circuit breaks must be installed at the
inlet point.
10

Consideration for Home Lighting
• Living and Dining Room
– Combination of light fittings providing good strong light for
reading etc and decorative light fittings
– Use multiple pendent(capable of holding at least a 100W
lamp) directly over the dining table
• Bedrooms
– Lighting positioned such that no direct glaring light while
lying in bed
– One strong and one weak light will be ideal
• Kitchen
– Kitchen,being a hot place, cool lighting is best
• Bathroom
– Lighting should be of uniform level throughout
11

IF YOU DON’T WANT TO BE ELECTROCUTED
• Don’t touch live wires
• And person touching live wires before switching off
• Use safety belt while working on pole
• Use strong cable insulators
• Earthing for electric appliances
• Wet hands while using electricity is not a good idea
12

Closed Circuit Television (CCTV)
• Connected system of camera, display
monitors and recording devices
• Main purpose of CCTV is security and
surveillance
• Storage, Preservation, Facial Recognition,
Wireless security cameras are some added
features
• Networking CCTV, Talking CCTV and CCDP
are its technological advancements
• Negative impact on civil liberties are pointed
out as its drawback
13

Public
Perception
of Safety
HQ
Evidence
Crime
Prevention
Home
Security
Traffic
Monitoring
In Schools
and Offices
Industrial
Purposes
14

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