Topic outline

  • General

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  • introduction

    UNIT TITLE: PERFORM INSTALLATION OF EARTHING SYSTEM.

    UNIT CODE: CONEIM3014A2

    UNIT DESCRIPTOR: This unit covers the knowledge, skills and attitudes required to perform installation of earthing system test. It includes preparing for works, installing earthing (boring) system, Earth Leakage Circuit Breaker (ELCB), lightning / surge arrester and maintaining workplace, tools, equipment and materials.

    NOMINAL HOURS: 50 Hours

    LEARNING OUTCOME: At the end of this session, learners will be able to-

    FACILITATOR NAME: Md. Jahangir Alam Tarafder ( Shamol )

    TEACHER NAME: Md. Khalilur Rahman

                                       Senior Instructor

                                       Jamalpur Technical Training Center, Jamalpur.

  • structure of the course

    The Structure of the course :

                                                        Only Online Course
                                                                     Or
                                                           Blended Course
    In addition to the online course . Physical demonstration is mandatory for this course , so i should go for Blended Course.
    Lets go for 3 week of online course and 1 week of face to face training ( Blended Course ) .

    Total Course :   21 days

    Online Course :  2 Week 

                               ( 5 days per week for 1 hour ) 

                                   ( Saturday - Wednesday )

    Face to Face : 1 Week 

                             ( 5 days daily 3 hours and 

                                         1 day final assessment for 5 hour )

  • mind map

  • p.p.e.-personal protective equipment

    Personal Protective Equipment, commonly referred to as "PPE", is equipment worn to minimize exposure to hazards that cause serious workplace injuries and illnesses. These injuries and illnesses may result from contact with chemical, radiological, physical, electrical, mechanical, or other workplace hazards. Personal Protective Equipment may include items such as below:

    • Helmet
    • Safety goggles
    • Mask
    • Apron
    • Hand gloves
    • Safety shoe

  • tools

    Electrical tools are tools used to work on an electrical system. These can include a wide range of tools such as below:

    • Pliers
    • Screw drivers
    • Manual / Electrical pipe threader/ Reamer
    • Testing Instruments: Earth leakage circuit breaker, Earth tester and Megger tester.

  • materials

    Electrical Material is basically the parts or elements used in the making of any electrical construction project. These can include a wide range of materials such as below:

    • Earth electrode
    • Potential electrode
    • Current electrode
    • Reducing socket
    • Copper conductor
    • Charcoal
    • Salt
    • Gl pipe (1", 1.5", 2", etc.)
    • Bus-bar
    • Cable
    • Gl Plate
    • Gl Sheet
    • Rod

  • circuit breaker

    A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by overcurrent/overload or short circuit. Its basic function is to interrupt current flow after protective relays detect a fault.

    • SP
    • DP
    • TPN
    • Measurement of circuit breaker: 6Amp,10Amp, 16Amp, 20Amp, 25Amp etc.

  • prepare for works

    1. Personal Protective Equipment (PPE) is collected and worn as per job requirement.
    2. Workplace is prepared as per job requirement.
    3. Tools, and materials are selected and collected as per job requirement.

  • Elements of Competency: Install earthing (boring) system

    1. Hole is excavated of the dimension into the ground as per requirement.
    2. Earth continuity wire terminal is fixed (copper conductor) with the lower part (pull through inner side) of GI pipe as required.
    3. GI pipe is installed with earth continuity wire (copper conductor) into the ground as per diagram.
    4. Charcoal and salt are mixed and refilled the hole with layers of sand / soil & compact the soil using rammer as required.
    5. Reducing socket is fixed at the upper end of the GI pipe & the GI pipe is connected and through reducer socket as standard.
    6. Cable lugs are punched with earth continuity wire & the earth continuity is connected (copper conductor) wire with earthing bus-bar of MDB as per diagram.
    7. Connections are re-checked as per circuit diagram & the earth resistance is measured using earth tester.

  • Elements of Competency: Install Earth Leakage Circuit Breaker (ELCB)

    1. ELCB is fixed with the circuit breaker channel of the SDB.
    2. Insulation is removed of cable terminal using wire striper followed by OSH.
    3. Cable terminal is connected (phase and earth) with the input and output of ELCB to sub-circuit bus-bar as per diagram.
    4. Connection is rechecked as per diagram.
    5. Performance is checked with power supply.

  • Elements of Competency: Install lightning / surge arrester

    1. Hole points are marked into the roof of top floor and the hole is made to the mark point using drill machine.
    2. Rowel bolt is put into the hole & the surge is fixed arrestors set with rowel bolt.
    3. Copper conductor is connected with the base point of surge arrestor.
    4. PVC pipe is installed into the wall from roof to ground point using saddle & the copper conductor is pulled in the PVC pipe.
    5. Copper conductor is connected with earthing pipe / plate.
    6. Continuity is rechecked of lighting arrester using megger as required standard.

  • Elements of Competency: Maintain workplace, tools, equipment and materials

    1. Work area is cleaned in accordance with workplace procedures.
    2. Unused materials are stored for re-use or disposed following workplace procedures.
    3. Waste and scrap materials are disposed with following workplace procedures.
    4. Inventory of tools equipment are conducted and recorded as per checklist.
    5. Tools and equipment are cleaned and stored as per manufacturer's recommendation in appropriate location.

  • Course Evaluation