Electrical installation
BT1 Electricity
BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex1- Simple lighting
A) Aim: the aim of this exercise is to lit a lamp from one location, it is widely
used in our life and it is basic of the lighting and electrical installations, it is
usually used in most rooms.
B) Necessary devices:
1) One lamp + its support
2) One switch Q1
3) One single phase socket
4) Junction
5) Conductor wire
C) Function:
1) By the action on the switch Q1 the lamp will turn ON
2) Another action on the switch Q1 the lamp will turn OFF
3) The socket S can be used to supply any electric device
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex2- Simple lighting with two lamps
A) Aim: the aim of this exercise is to lit two lamps from one location by using
the same switch, it is just like the previous exercise but it can be used in
larger rooms, balcony, corridor…
B) Necessary devices:
1) Two lamps + supports
2) One switch Q1
3) One single phase socket
4) Junction
5) Conductor wire
C) Function:
1) By the action on the switch Q1 the two lamps will turn ON
2) Another action on the switch Q1 the two lamps will turn OFF
3) The socket S can be used to supply any electric device
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex3- double lighting
A) Aim: the aim of this exercise is to lit two lamps separately from one
location, it is used in salons, chandelier…
B) Necessary devices:
1) two lamps + supports
2) One switch Q5 (or two switches Q1)
3) One single phase socket
4) Junction
5) Conductor wire
C) Function:
1) By the action on the first switch of Q5 the first lamp will turn ON
2) Another action on the same switch the same lamp will turn OFF
3) By the action on the second switch of Q5 the second lamp will turn ON
4) Another action on the same switch the same lamp will turn OFF
5) The socket S can be used to supply any electric device
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex4- double directions
A) Aim: the aim of this exercise is to lit two lamps from two different places, it
is widely used in most houses in bedrooms or in rooms with two entrances…
B) Necessary devices:
1) two lamps + supports
2) two switches Q6
3) One single phase socket
4) Junction
5) Conductor wire
C) Function:
1) By the action on any of both switches Q6 the two lamps will turn ON
2) Another action on any of both switches Q6 the two lamps will turn OFF
3) The socket S can be used to supply any electric device
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex5- triple directions
A) Aim: the aim of this exercise is to lit two lamps from three different places,
it is used in wide rooms, long corridors or rooms with three entrances
B) Necessary devices:
1) two lamps + supports
2) two switches Q6 + one switch Q7
3) Junction
4) Conductor wire
C) Function:
1) By the action on any of the three switches , the two lamps will turn ON
2) Another action on any of three switches, the two lamps will turn OFF
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex6- N-directions
A) Aim: the aim of this exercise is to lit two lamps from ”N” different places, it
is used in wide rooms, long corridors or rooms with “N” entrances
B) Necessary devices:
1) two lamps + supports
2) two switches Q6 + two or more switches Q7
3) Junction
4) Conductor wire
C) Function:
1) By the action on any of the switches , the two lamps will turn ON
2) Another action on any of switches, the two lamps will turn OFF
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex7- Cave lighting
A) Aim: this exercise is used in specific application …
B) Necessary devices:
1) three lamps + supports
2) two switches Q6 + one switch Q1
3) Junction
4) Conductor wire
C) Function:
1) By the action on Q1, the lamp L1 will turn ON
2) By the action on the first Q6, the lamp L2 will turn ON and L1 will turn
OFF
3) By the action on the second Q6, the lamp L3 will turn ON and L2 will
turn OFF
4) Another action on the second Q6, the lamp L3 will turn OFF and L2 will
turn ON
5) Another action on the first Q6, the lamp L2 will turn OFF and L1 will
turn ON
6) Another action on Q1, the lamp L1 will turn OFF
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex8-Normal and dim lighting
A) Aim: this exercise is used in specific application like in theaters …
B) Necessary devices:
1) two lamps + supports
2) one switch Q6 + one switch Q1
3) Junction
4) Conductor wire
C) Function:
1) By the action on Q1, the lamp L2 will turn ON while L1 is OFF
2) An action on Q6 will cause the series connection between L1 and L2,
both lamps will lit in a dimming way. Both lamps will be supplied with
half of the supply voltage.
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex9-Hotel room lighting
A) Aim: the aim of this exercise is to reduce the consumption of electrical
energy. Just like its name, it can be used in hotel rooms or in small house
formed of WC and a bedroom.
B) Necessary devices:
1) two lamps + supports
2) one switch Q1 + one switch Q6+ one switch Q7
3) Junction
4) Conductor wire
C) Function:
1) Q1 is used to control the supply of the circuit (it is like a circuit breaker)
2) By the action on Q6 or Q7, L1 will turn ON and L2 will turn OFF
3) Another action on Q6 or Q7, L1 will turn OFF and L2 will turn ON
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex10- Series-parallel lighting
A) Aim: this exercise is very special application.
B) Necessary devices:
1) two lamps + supports
2) two switches Q1 + one switch Q6
3) Junction
4) Conductor wire
C) Function:
By the action on Q1a, Q1b and Q6, the lighting will change between:
1) L1 will turn ON (normal lighting)
2) L2 will turn ON (normal lighting)
3) L1 and L1 will light in series (dim lighting)
4) L1 and L2 will light in parallel (normal lighting)
5) L1 and L2 will turn OFF
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex11- Lighting with fluorescent lamp
A) Aim: the aim of this exercise is to understand the principle of operation of
fluorescent lamp and its wiring. It is widely used in houses, in halls, in
classrooms…
B) Necessary devices:
1) Fluorescent tube + supports
2) Starter
3) Ballast
4) One switch Q1
5) Junction
6) Conductor wire
C) Function:
1) By the action on the switch Q1 the AC current will pass through the
ballast
2) The magnetic field grows and shrinks with AC cycles
3) The tungsten filaments heat up as current goes through
4) The small neon lamp (starter) heats up a bimetallic switch
5) Bimetallic switch heats up and pops into OFF
6) Magnetic field collapses causing a spike of voltage (inductive kick)
7) Voltage spike forces ions all the way through the lamp
8) Lamp fails to light because of timing . the magnetic field which
collapsed was not at peak
9) The lamp automatically returns to preheat stage
10) Magnetic field collapses at maximum size, causing a powerful
inductive kick which starts the lamp.
11) The inductive kick got the lamp warm enough to keep the arc going .
as the lamp warms it gets brighter
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex12-Lock and bell
A) Aim: The aim of this exercise is to learn how to use the electric lock and
bell and their wiring, it is used in most houses…
B) Necessary devices:
1) Two push buttons
2) Electric bell (220V)
3) Transformer (220V/12V)
4) Electric lock (12V)
5) Junction
6) Conductor wire
C) Function:
1) By the action on PB1 the electric bell rings
2) By the action on PB2 the electric lock turns ON and open
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex13-Lock and bell (day/night operation)
A) Aim: The aim of this exercise is to learn how to use the electric lock and
bell and their wiring, it is used in most houses and in building entrance…
B) Necessary devices:
1) Two push buttons + One switch Q1
2) Electric bell (220V)
3) Transformer (220V/12V)
4) Electric lock (12V)
5) Junction
6) Conductor wire
C) Function:
1) The Q6 is used to select between day and night operation
2) The push button PB2 is used to command the electric lock
3) During the day the action on push button PB1 command the electric lock
4) During the night the action on push button PB1 command the electric bell
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex14-Teleruptor
A) Aim: The aim of this exercise is to learn how to use the teleruptor, its
principle of operation and its wiring.
B) Necessary devices:
1) One push buttons
2) Two lamps + supports
3) Teleruptor
4) Junction
5) Conductor wire
C) Function:
Any action on push button PB turn the teleruptor ON, it will cause the
changing positions of its contacts causing the turn OFF of one lamp and
turn ON the other lamp
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex15-Triple direction by using teleruptor
A) Aim: The aim of this exercise is to learn how to use the teleruptor for
lighting like triple or “N” directions, it is easier than the basic “N”
directions exercises, it can be used in multiple floors buildings or in long
corridors..
B) Necessary devices:
1) Three push buttons
2) Two lamps + supports
3) Teleruptor
4) Junction
5) Conductor wire
C) Function:
1) The push buttons must be connected in parallel
2) The action on any of the push buttons , the teleruptor will turn ON and
one lamp will turn ON and the other turn OFF
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex16-Timer (electronic, pendulum or mercury)
A) Aim: The aim of this exercise is to learn how to use the timer, its principle
of operation and its wiring. It is usually used in stairs lighting…
B) Necessary devices:
1) two push buttons
2) Two lamps + supports
3) Timer
4) Junction
5) Conductor wire
C) Function:
the action on any of the push buttons, turn the timer ON, it will cause the
changing position of its contact, causing the turn ON of both lamps for a
certain time and then the switch will return to initial position and then
lamps goes OFF
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex17-Timer + teleruptor
A) Aim: The aim of this exercise is to learn how to select between two type of
lighting, one using a timer and the other using a teleruptor…
B) Necessary devices:
1) Two push buttons
2) One switch Q6
3) One lamp + support
4) Timer
5) Teleruptor
6) Junction
7) Conductor wire
C) Function:
1) The Q6 is used to select between the two types of lighting (teleruptor or
timer)
2) If the teleruptor is selected, the action on any of the push buttons the
teleruptor turns on and the lamp turns ON or Turn OFF
3) If the timer is selected, the action on any of the push buttons the timer
turns on and the lamp turns ON for a certain time then Turn OFF
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex18- Annunciator table
A) Aim: The aim of this exercise is to understand how an annuncitor table
works, it is used in hospitals and in hotels…
B) Necessary devices:
1) Six push buttons
2) Annonciator table
3) Junction
4) Conductor wire
C) Function:
1) The client call the operator by pushing the push button found in his
room
2) A signalization lamp in the annunciator table corresponding to that
room will lit
3) When the operator see the lamp, he push another push button in the
annuncitor table to turn off the light, which means he will take the
order of the client
4) A signal bell or voice alert can be used optionally by using the built
in relay in the annunciator table.
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Apply this exercise on a project board ( replace the terminal connectors
of the annunciator table with a junction)
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex19- Electrical energy counter
A) Aim: The aim of this exercise is to learn the principle of operation of the
electrical energy counter and how it is connected to the main circuit breaker
B) Necessary devices:
1) Energy counter
2) Circuit breaker
3) Conductor wire
C) Function:
1) The electrical energy counter is formed of two coils, one is voltage coil
and the other is current coil
2) When the electricity is present the voltage coil creates a magnetic field
3) When a load is present, it absorbs a certain current, the current coil
creates another magnetic field
4) A rotating disk is submitted to the resultant of both magnetic field
5) The disk will turn with a speed depending on the absorbed energy by the
load (current, voltage and time)
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex20- Interphone
A) Aim: The aim of this exercise is to learn how it is the installation of an
interphone and how to link it to an electrical lock, it is widely used in
residential buildings…
B) Necessary devices:
1) Interphone (door + 2 floor’s stations)
2) transformer
3) electrical lock
4) conductor wires
C) Function:
1) The visitor can call any floor from the door station and can make a voice
conversation
2) The main door can be opened from any of the floor stations
D) Developed diagram
E) Demanded work:
F) Redraw the developed diagram
G) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex21- Dimming lighting
A) Aim: The aim of this exercise is to understand the installation of a light
dimmer, it is widely used in houses, restaurant, theaters … to create a warm
ambiance.
B) Necessary devices:
1) Light dimmer switch
2) Lamp + support
3) junction
4) conductor wires
C) Function:
By regulating the dimmer switch, the light of the lamp will change from
OFF to dimming light to Normal lighting
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex22- Lighting by using sensors (Day-night lighting)
A) Aim: The aim of this exercise is to learn the installation of sensors in
lighting, the day-night sensor is usually used in gardens, in outdoor lighting
and in street lighting….
B) Necessary devices:
1) Photo-cell
2) Lamp + support
3) junction
4) conductor wires
C) Function:
1) During the night (dark), the lamp will turn ON
2) During the day, the lamp will turn OFF
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex23- Lighting by using sensors (Motion sensor lighting)
A) Aim: The aim of this exercise is to learn the installation of sensors in
lighting, the motion sensor is usually in outdoor lighting, in stairs lighting….
B) Necessary devices:
1) Motion sensor
2) Lamp + support
3) junction
4) conductor wires
C) Function:
When the sensor realize a movement in its range, the lamp will lit for some
time then it will turn OFF. Usually the motion sensor can be switched to all
time lighting mode (always ON)
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex24- Command of a relay
A) Aim: The aim of this exercise is to understand the principle of operation of
the relay and how to use it.
B) Necessary devices:
1) Relay + support
2) Three Lamps + support
3) Switch Q1
4) junction
5) conductor wires
C) Function:
1) The relay is formed of a coil (electromagnet) and switches. The switch
can be NO (normally open) , NC (normally close) or mixed (inverter
switch)
2) If no action on the switch Q1, the switches are in stop (relaxing)
positions, the lamp connected to the NO switch will remain OFF and the
lamp connected to the NC switch will remain ON
3) By the action on the switch Q1, the coil is supplied and it creates a
magnetic field, the switches will change positions, the switches are in
work positions now, the lamp connected to the NO switch will become
ON and the lamp connected to the NC switch will become OFF
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
D) Developed diagram
E) Demanded work:
1) Redraw the developed diagram
2) Draw the one wire diagram
3) Draw the detailed diagram
4) Apply this exercise on a project board
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex25- Project
Aim: the aim of this project is to gather most of the previous exercises to
form the house electrical installation but on board
1) Every student must choose one of the previous learned exercises
2) The student must execute the chosen exercise on the project board
3) When all student finish their exercise, all board must be supplied from
the electrical source through the electrical energy counter and the main
circuit breaker.
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex1- Simple lighting
Ex2- Simple lighting with two lamps
Ex3- double lighting
Ex4- double directions
Ex5- triple directions
Ex6- N-directions
Ex7- Cave lighting
Ex8-Normal and dim lighting
Ex9-Hotel room lighting
Ex10- Series-parallel lighting
Ex11- Lighting with fluorescent lamp
Ex12-Lock and bell
Ex13-Lock and bell (day/night operation)
Ex14-Teleruptor
Ex15-Triple direction by using teleruptor
Ex16-Timer (electronic, pendulum or mercury)
Ex17-Timer + teleruptor
Ex18- Annunciator table
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BT1 Electricity Electrical Installation Prepared by Awad Darwiche
Ex19- Electrical energy counter
Ex20- Interphone
Ex21- Dimming lighting
Ex22- Lighting by using sensors (Day-night lighting)
Ex23- Lighting by using sensors (Motion sensor lighting)
Ex24- Command of a relay
Ex25- Project
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