Table of Content
 

Importance of electricity 
  • Duties of Electricity
  • Safety precautions
  • Necessity of safety
  • Safety precautions
  • Safety signs
  • Prohibition signs
  • Mandatory signs
  • Warning signs
  • Information signs
  • Electrical safety
  • First aid in Electrical shop
  • Electric shock
  • Effects of electric shock
  • Treatment of electric shock
  • Prompt treatment is essential
  • Electrical burns
  • Burns and scalds
  • Severe bleeding
  • Immediate action
  • To control severe bleeding
  • Large wound
  • Fire accident
  • Fuel
  • Heat
  • Oxygen
  • Preventing fires
  • Electrical symbols

Electrician’s Hand Tools

  • Pliers
  • Long nose pliers
  • Care and maintenance of pliers
  • Screwdriver BIS 844 (FIG3)
  • Screwdriver – Philips
  • Care and maintenance
  • Neon ester
  • Care and maintenance
  • Electrician’s knife
  • Care and maintenance
  • Bradawl Square pointed (or poker)
  • Gimlet
  • Rawl plug tool bit
  • Hand drill
  • Portable Electric drilling machine
  • Electric soldering copper copper bit
  • Standard wire gauge (SWG)
  • Outside micrometers
  • Ranges of outside micrometers
  • Ranges of outside micrometer
  • Frame
  • Barrel/sleeve
  • Thimble
  • Spindle
  • Anvil
  • Spindle lock nut
  • Ratchet stop
  • Reading micrometer measurements
  • Conductors and Insulators
  • Conductors
  • Insulators
  • Examples of conductor
  • Partial conductor
  • Examples of insulator
  • Types of cable
  • Flexible core
  • Heavy Duty Cable
  • PVC cables advantages
  • Size of conductors
  • Selection of cables
  • Uses of wires and cables  
  • Lead Sheathed wire
  • Weather proof wire
  • Flexible wires
  • ACSR (Aluminium conductor steel Reinforced)
  • Hard drawn bare copper conductor
  • Eurekawire
  • Nichrome wire
  • Enameled wire
  • Joints in electrical conductors
  • Definition of joint
  • Types of joints
  • Pig – tail/Rat – tail/Twisted joint
  • Married joint
  • Tee joint
  • Britannia joint
  • Britannia tee joint
  • Western union joint
  • Scarfed joint
  • Tap joint in single stranded conductors of diameter 2mmm or less
  • Plain tap joint
  • Aerial tap joint
  • Knotted tap joint 
  • Duplex cross  - tap joint 
  • Doubles – cross  tap joint

Electrical accessories 

  • Electrical  accessories
  • Rating of accessories
  • Mounting of accessories
  • Surface  Mounting type
  • Flush – mounting type
  • Controlling accessories
  • Types of switch according to their function and place of use
  • Double pole iron- clad main switch
  • Holding accessories
  • Lamp- holders
  • Safety accessories
  • Types of fuses
  • Kit- kat type fuses
  • Advantages
  • Socket outlet current rating
  • Two- pin socket
  • Two- pin plug
  • Three- pin Socket
  • Three- pin plug
  • General accessories
  • Ceiling roses
  • Miniature circuit breaker
  • Earth Leakage Circuit Breaker (ELCB)
  • Triple (three) pole iron- clad main switch

Ohm’s Law

  • Definitions EMF/ Pd/ Voltage
  • Current
  • Resistance
  • Ohm’s Law states
  • Electric Circuit
  • Work, Power and Energy
  • Work
  • Force
  • Power
  • Horsepower
  • Energy

Series Circuit

  • Characteristics of series circuit
  • Uses of series connection

Parallel Circuit

  • Common Uses
  • Solution
  • Series and Parallel Circuit

Cell/ Batteries (Dry and Wet)

  • Cell
  • Primary Cells
  • Dry Cell
  • Grouping of Cells
  • Series and Parallel cell connections
  • Parallel connection
  • Series Parallel connection

Secondary cell

  • Secondary cell
  • Terms and definitions
  • Electrolyte
  • Electrodes
  • Anode
  • Electrolysis
  • Lead acid cell
  • Container
  • Plates
  • Plante plates
  • Faure plate
  • Separators
  • Post terminal
  • Electrolyte

Domestic energy meter

  • Necessity of energy meter
  • Parts of function of energy meter
  • Iron core
  • Potential Coil(voltage coil)
  • Current coil
  • Disc
  • Spindle
  • Permanent magnet/ braking magnet
  • Functioning of energy meter
  • Meter constant
  • Industrial energy meter
  • 3-phase energy meters
  • Two element 3-phase energy meters
  • 3-element 3-phase energy meter
  • Application of 3-phase energy meter

Electrical appliances- Electric kettle

  • Saucepan type
  • Immersion type
  • Electric iron (non- automatic)
  • Type of irons
  • Working principle of an electric iron and its parts
  • Food mixer
  • Ceiling fan
  • Construction
  • Regulator
  • Earthing- Types of earthing, its uses and testing
  • Necessity of earthing
  • System earthing
  • Equipment earthing
  • Special requirements earthing
  • Earth
  • Earth
  • Earth electrode
  • Case 1 Metal body of apparatus when not earthed
  • Case 2 Metal body of apparatus when earthed
  • General
  • Rod and Pipe electrodes
  • Plate electrodes
  • Measurement of Earth Resistance
  • Necessity of measuring of earth electrode resistance
  • Principle
  • Construction and working of earth tester Megger
  • Method of earth resistance measurement
  • Electrical wiring system
  • Types of wiring
  • Durability
  • Safety
  • Cost
  • Appearance
  • Accessibility
  • Cleat wiring
  • Porcelain cleats
  • Wires
  • Gitties
  • Screws
  • Round blocks and board
  • Accessories
  • Uses
  • Casing and capping wiring
  • C.T.S/T.R.S batten wiring
  • Lead covered cable wiring
  • Conduit pipe wiring
  • Surface conduit pipe wiring
  • Concealed conduit pipe wiring

Transformer

  • Primary and Secondary
  • Construction
  • Advantages of a transformer
  • Types of transformers
  • Berrytype transformers
  • Classification of transformer
  • Distribution of transformer
  • Power transformer

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