Table of Content
 

Wireman’s tools

• PLIERS
• Care and maintenance of pliers
• 6 Screwdriver BIS 844 
• Screwdriver – Philips 
• Care and maintenance 
• 7 Neon tester BIS 5579 – 1985 
• Care and maintenance 
• 8 Electrician’s knife (Double blade) 
• 10 Hammer ball pein
• Care and maintenance 
• 11 Try –square (engineer’s square) 
• 12 Firmer Chisel 
• Care and maintenance 
• 13 Tenon - saw 
• Care and maintenance 
• 14 Wood rasp file 
• 15 File 
• Care and maintenance 
• 16 Plumb bob 
• Care and maintenance
• 17 Bradawl square pointed (or poker)
• 18 Gimlet
• Care and maintenance 
• 19 Center punch 
• Care and maintenance 
• 20 Mallet 
• Care and maintenance 
• 21 Ratchet brace 
• 22 Flat cold chisel
• Care and maintenance 
• 23 Rawl plug tool and big 
• Care and maintenance 
• 24 Ring spanner set 
• 26 Socket (box )spanner 
• 27 Single ended open jaw adjustable spanner (Fig 27)BIS 
• 6149 
• Care and maintenance 
• 28measuring steel tape (Fig 28)
• Care and maintenance
• 29 Hacksaw 
• 1977 for blades 
• Care and maintenance 
• 30 Pincers 
• Care and maintenance 
• 31 Hand drill 
• 32 Portable Electric drilling Machine 
• Care and maintenance 

Electrical Wiring Accessories 

• Electrical accessories 
• Rating accessories
• Construction of accessories 
• Mounting of accessories 
• Surface mounting type 
• Flush-mounting type 
• Controlling accessories 
• Types of switches according to their function and place of use
• Single pole ,one –way switch
• Single pole ,two –may switch 
• Intermediate switch 
• Bell –push or push-button switch
• Pull or ceiling switch (Pendent switch)
• Double pole iron –clad main switch
• Triple (three)pole iron –clad main switch 
• Holding accessories 
• Lamp –holders
• Bayonet cap lamp –holders 
• Batten lamp –holders 
• Angle holders
• Bracket holders
• Tube light or fluorescent lamp –holders
• Edison screw –type lamp –holders
• Goliath Edison screw-type holders
• Specification of a lamp –holders 
• Safety accessories 
• Types of fuses
• Kit –kit type fuse
• Advantages
• Iron – clad fuse cut outs 
• Outlet accessories
• Socket outlet current rating
• General accessories 
• Appliance connectors or iron connectors
• Adaptor 
• Ceiling roses 
• Connectors 
• Distribution board 
• Neutral link 
• B.I.S Symbols used for electrical accessories

Cable termination connection

• Crimp connection 
• Screw on terminals with loop/ring conductor
• Connections and terminals 

Joints in electrical conductors

• Definition 
• TYPES OF JOINTS 
• Some of the commonly used joints are listed below
• Pig –rail/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 2mm or less
• Plain tap joint 
• Aerial tap joint 
• Knotted tap joint 
• Duplex –cross tap joint
• Double –cross tap joint 

Current carrying capacity of copper & aluminium cables and comparison between solid and stranded cables 

• Selection of cables 
• Current rating of cables based on type of protection
• Coarse excess current protection
• Close excess current protection 
• Devices include
• Rating factor with respect to protection 
• SOLUTION 
• ADVANTAGES OF STRANDED CONDUCTORS OVER SOLIDCONDUCTORS

Precautions to be observed while using Aluminum cables

• Selection of conduit for installation
• Handling 
• Skinning of cables 
• Connecting the cable ends 
• Contact area of the grub screws used in accessories may be less
• Oxide scale formation on aluminium conductors
• Galvanic corrosion can be avoided by 
• Loose connection due to dissimilar metals and tem- perature

Mounting accessories-NE code-Specification of wooden board and blocks for wiring

• Specification of commercially available boards, round blocks for mounting electrical accessories 
• Size of the board
• System of wiring
• Place of wiring
• Place of wiring
• Specification for blocks and boards
• T W round blocks
• T W boards

Mounting accessories through and of pilot holes-wood machine screw specifications

• Determining the through hole size according the cable size and number of cables
• Method of making pilot holes in wood using bradawl and gimlet
• Select the correct size of drill or pilot holes
• Drill holes to correct depth
• Wood screws
• Types of wood screws
• Slotted round head wood screws
• Slotted raised countersunk head wood screws
• Designation of wood screws
• Selection of the correct type, size and length of screws
• In softwood
• In hardwood
• Precautions to be adopted while fixing wood screws
• Advantages of screws over nails
• Machine screws 
• Screw heads
• Types of Machine screws
• Metric threaded screws
• BA (British association) threaded screws
• Unified National threaded screws (UNF)
• Self-tapping screws

Diagrams and systems used in domestic installation

• Layout diagram 
• Installation plan 
• Circuit diagram 
• Wiring diagram 

B I S Regulations, recommendations and NE code pertaining to wiring installations

• B I S regulation pertaining wiring installations
• Fittings and accessories 
• Sub-circuits-different types
• Light and fan sub-circuits
• Power sub-circuits
• Lighting 
• Socket outlets 
• Fans
• Flexible cords
• Flexible cords shall not be used in following cases
• Mounting levels of the accessories and cables as recommended in B I S and NEC

Method of marking the layout for wiring

• Plumb-bob (Marking true vertical line)
• Spirit level (Marking true horizontal line)
• Water level
• Marking of layout
• Marking o true vertical runs
• Marking ‘true’ horizontal runs
• Measuring off horizontal and vertical runs
• Marking cable runs on the ceiling 

PVC Channel (casing and capping) wiring

Earthing - Method, Regulations and Recommendations

• System Earthing
• Equipment Earthing
• Terminology
• Apparatus
• Bonding
• Damp situation
• Dead
• Earth
• Earth-continuity conductor (ECC)
• Earth current
• Earth electrode
• Earth fault
• Earth (earthing) terminal
• Earth wire
• Earthed circuit
• Earthed pole 
• Earthed system 
• Earthed lead 
• Earthing ring (or earth bus)
• Earthing resistor (earthing resistance) 
• Fault
• Fault current 
• Double insulation
• Functional insulation
• Reinforced insulation (protective insulation)
• Leakage
• Leakage current
• Live
• Multiple-earthed neutral system
• Potential (at a point)
• Resistance area (of and earth electrode only)
• Service line
• Step potential
• Touch potential 
• Reasons for earthing 
• Types of earth electrodes
• Rod and pipe electrodes

I.E.E. Regulations pertaining to earthing

• I.E. Rules pertaining to earthing
• Provisions applicable to medium, high or extra high voltage installations
• Systems at medium voltage
• Connection with earth
• Guarding 
• Earthing

Domestic wiring-use of rawl jumper, plugs, wooden gutties and pipe jumpers on brick/concrete walls

• Rawl jumper 
• Types of filler materials 
• Shape of the wooden guttie
• Method of fixing 
• Pipe jumper
• Preparing the pipe jumper

Energy meters-symbol-internal connection-N.E. code of practice and I.E. rules of energy meter installation

• Precautions while installing energy meters
• Installation
• General Instructions

Errors in energy meters

• Incorrect magnitude of fluxes
• Incorrect phase angles
• Lack of symmetry in magnetic circuit
• Errors caused by the braking system
• Preliminary light load adjustment 
• Full load unity power factor adjustment 
• Lag adjustments (Low power factor adjustments)
• Rated supply voltage
• Full load unity power factor 
• The performance 
• Creep adjustment

Testing a domestic wiring installation

• Inspection of the installation
• Lighting circuits
• Testing of installation
• Continuity or open circuit test 
• Polarity test
• Insulation resistance between conductors and earth

Inspection and test of wiring installation-Method of improving the condition-Regulations

• I.E. Regulations