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Electrical Installation & Maintenance

This course describes the knowledge, skills and attitudes required. This course covers interpretation of drawings and specifications, procurement of equipment, tools and materials, layout drawing and channel wiring, console wiring and cable laying, installing boards and setting wiring equipment, performing circuit operations as per diagrams and layouts, and working areas. Cleaning is included.

Electrical Installation & Maintenance

Duration: 06 Month’s

  Courses Code: 108  

 Total Time: 403 Hour

Subject Code Subjects of Study Subjects Description Hours
Lesson 1:
Basic Electrical Circuit Installation
● Gather and check tools and equipment, ● Carry out circuit installation of an electrical load controlled from one position ● Carry out circuit installation of an electrical load controlled from two positions ● Carry out circuit installation of two electrical loads controlled from two positions ● Carry out circuit installation of a tube lamp ● Carry out circuit installation for a door bell from two switching positions ● Carry out circuit installation for a ceiling fan ● Clean/maintain the workplace.
20
Lesson 2:
Precision Checks and Measurement
● Select measuring instrument, ● Obtain measurements and checks, ● Record/communicate measurement and check results, ● Clean, maintain and store measuring instruments. Specifications/ ratings: ● Voltage, ● Current ● Power- KW/hp ● KWH ● Area measurement for cables/wire (SWG, mm2) Specifications: ● Ampere ● Volt, ● Ohms ● Watt ● Microfarad ● Henry ● Milliampere etc. Measuring instruments: ● AVO meter(analogue/digital) ● Watt meter ● Ampere meter ● Earth- Tester ● Megger ● Voltmeter ● Tachometer. Systems of measurements: ● ISO standard ● English system (FPS system) ● Metric system.
20
Lesson 3:
Tools for Electrical Works
Hand Tools: 1. Ball peen hammer, 2. Cross peen hammer, 3. Straight peen hammer, 4. Mallet / soft hammer, 5. Bench vise, 6. Soft jaw, 7. Rough file, 8. Medium file, 9. Smooth file, 10. Punches, 11. Chisels, 12. Wrenches, 13. Pliers, 14. Scriber, 15. Scraper, 16. Screw drivers, 17. Dividers, 18. Trammels, 19. Surface plate, 20. Marking table, 21. Height gauge, 22. Layout tools, 23. Tap sets, 24. Die sets, 25. Tap handle, 26. Die handle, 27. Hacksaw, 28. Paint brushes, 29. Drill bits, 30. Tap extruder, 31. Screw Extruder, 32. Hacksaw frame, 33. Hacksaw blade, 34. Rivet Gun, 35. Sledge Hammers, 36. Sockets, 37. Spanners, 38. Vice grip, 39. Wire Cutters, 40. Wood Planners, 41. Hand drill machine, 42. Hand grinding machine, 43. Pedestal drill, 44. Powered screw driver, 45. Hand shear, 46. Clamps, Jacks, 47. Soldering iron, 48. Allen wrenches, 49. Draft punches. Power Tools: 1. Power drills, 2. Power rivet gun, 3. Hand grinders, 4. Pneumatic wrenches, 5. Press machine, 6. Jack hammer, 7. Planers, 8. Pedestal drills. Measuring Tools: 1. Measuring tape, 2. Steel rule, 3. Meter rule, 4. Outside & inside caliper, 5. Tri-square, Sprit level, 6. Vernier caliper, 7. Micrometer, Simple protractor, 8. Vernier protractor, 9. Limit gauges, 10. Snap gauges. Equipment: 1. Multi meter / AVO meter, 2. Earth tester, 3. Digital weight machine.
50
Lesson 4:
Personal Protective Equipment (PPE)
● Goggles, Ear muffs, ● Ear plugs, ● Gloves, ● Clothing, ● Apron, ● Helmet, ● Boots. ● Proper hand, feet and eye coordination ● Safe condition of electrical outlets, cords and lamps ● Working environment ● Safe operating condition of hand tools and power tools ● Awareness to OHS requirements.
20
Lesson 5:
Channel Wiring
1. Interpret drawings and specifications, 2. Collect tools, equipment and materials, 3. Draw the layout, set channels and cables, 4. Install boards and set all other accessories of wiring, 5. Perform circuit operation as per diagram and layout, 6. Clean the workplace. Materials: ● Refers to all electrical materials included but not limited to the following: Channel (1/2”, ¾”, 1”,1.25”, 1.5” PVC), ● GI Wire, ● Elbow, ● Bend, ● PVC circular box, ● Rowel plug, ● Saddle, ● Screw, ● Cable lugs, ● Cable tie, ● Thread ball, ● Insulating clip, ● Flexible conduit, ● Plastic forma, ● Electric soldering lead, ● Plastic tape, ● Cable (PVC, VIR). PPE: ● Uniform, ● Hand Gloves, ● Helmet, ● Goggles, ● Safety shoes. Boards: ● Plastic board ● Ebonite boards ● Wooden boards. Fuses & MCB: ● Rewire cable fuse ● Cartridge fuse ● Glass fuse ● HRC fuse ● Single pole MCB ● Double pole MCB ● MCCB ● Earth leakage circuit breaker (ELCB).
50
Lesson 6:
Conduit Wiring
20
Lesson 7:
Service Connection
1. Interpret drawings and specifications, 2. Collect tools, equipment and materials, 3. Measure the distance of service line, 4. Install cables for service connection, 5. Install energy meter, 6. Connect energy meter and main switch, 7. Clean the workplace. Drawings: ● Sketch ● Blue Print ● Electrical drawings. Specification’s: ● Product specification’s ● Performance specification’s ● Method specifications ● Specification manuals. Sign and symbols: ● Include all signs and symbol associated with Electrical and maintenance work ● Drawing symbol ● Connection symbols ● Load symbols ● Socket symbols ● Main switch symbols ● Supply symbols ● Danger symbols ● Switch board symbols ● Conduit board ● Circuit Breaker symbol ● Protective device symbol. Tools and equipment: ● Adjustable wrench ● Wire stripper ● Mallet ● Chisels: (Wooden, Cold) ● Hacksaw ● Hammers (Ball pin, Claw) ● Measuring tape ● Combination pliers ● side cutting pliers ● Diagonal cutting pliers ● Long nose pliers Screwdrivers: ● Star, ● Flat, ● Philips ● Tri square ● Neon tester ● Wire cutters ● Set squares ● Electrician knife ● Ladder ● Power tools ● Electric hand drill ● Grinder ● Soldering Iron ● Multi Meter / AVO Meter ● Earth Tester. Materials: ● GI wire ● Connector ● Distribution board ● Energy Meter ● Main switch ● Cables ● Guy instructor ● Clamps ● Tie ● Hook. PPE: ● Skull Guard / helmet ● Goggles ● Safety shoes ● Safety gloves ● Uniform.
40
Lesson 8:
Install Earthing and Protection System
1. Identify the type of earthing to be used, 2. Identify the type of lightning protection system to be used, 3. Select and collect tools, equipment and materials, 4. Excavate the hole for earthing element installation, 5. Install earthing components, 6. Finish earth pit chamber for pipe earthing method, 7. Install lightning protection system, 8. Clean and maintain the work area. Earthing materials: ● Continuity conductor / cable ● Earthing lead ● Earth electrode / plate ● Connector ● G.I. pipe / conduit ● Bolts and nuts ● Powdered charcoal ● Salt. Method of earthing: ● Pipe earthing ● Rod earthing ● Plate earthing ● Waterman earthing ● Strip or wire earthing. Tools: ● Measuring tape (30m) ● Tri- square ● Pocket tape (3m) ● Claw hammer / crow bar ● Wire stripper ● Adjustable wrench ● Bolt cutters ● C-clamp ● Chisels: (wooden, cold) ● Drill bits ● Files: (flat, round, half round) ● Hand hacksaw ● Hammers: (ball peen, claw) ● Pliers: (combination pliers, cutting pliers, diagonal cutting pliers, long nose pliers) ● Punches ● Screw Drivers: (star, negative, positive) ● Electrician knife Equipment: ● Electric drill machine ● Soldering iron ● Megger tester ● Multi meter/AVO meter ● Earth Tester PPE: ● Safety shoes ● Safety gloves ● Safety helmet ● Uniform Types of lightning protection system: ● Conventional LPS ● Non-conventional LPS. Lightning protection system materials: ● Lightning rod (spike arrester) ● Earth down conductor (arrester) ● Check terminal ● Earth lead..
40
Lesson 9:
Electrical Fittings and Fixtures Installation
● Gather tools, equipment and electrical Materials, ●. Install electrical circuit protection Components ● Install electrical fittings and fixtures ● Fix Electrical component holders and ceiling rose ● Clean/maintain the workplace.
20
Lesson 10:
Install and Repair of Solar Power System
1. Plan work and calculate cost 2. Install PV Module at a suitable place maintaining appropriate angle 3. Connect Solar Charge Controller with PV Module 4. Connect Inverter and Battery with the Charge Controller 5. Perform distribution of electrical supply from the solar system 6. Install and commission off-grid solar PV system 7. Perform corrective and preventive maintenance.
40
Exam
Final Exam
03

Exam Subjects

Sl Number Subjects Marks
01.
Basic Electrical Circuit Installation
100
02.
Precision Checks and Measurement
100
03.
Tools for Electrical Works
100
04.
Personal Protective Equipment (PPE)
100
05.
Channel Wiring
100
06.
Conduit Wiring
100
07
Service Connection
100
08.
Install Earthing and Protection System
100
09.
Electrical Fittings and Fixtures Installation
100
10.
Install and Repair of Solar Power System
100