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Discuss C&G 2365 Level 3/Safe isolation and testing in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. Jake Wesley

    Jake Wesley Trainee Access

    Location:
    Peterborough
    Hello everyone.
    I am due to take my practical exam for Level 3 on Monday but am totally unprepared. I seriously struggle to remember the safe isolation and testing procedures so literally ANY advice would be perfect right now.
    Thanks!
    Jake
     
  2. Pete999

    Pete999 Trusted Advisor

    Location:
    Northampton
     
    Jake Wesley likes this.
  3. Andy78

    Andy78 Trusted Advisor

    Location:
    Kingston upon Hull
  4. Vortigern

    Vortigern Electrician's Arms

    Location:
    England
    Permission
    Identify Isolation point for circuit
    Switch off, Lock off, post notice
    Use two pole voltage tester
    Test on known live
    test on circuit worked on
    If Dead, test on known live again
    All clear? Start work.
    Btw when doing practical they look for Live on last and off first in every combo.
     
    Jake Wesley likes this.
  5. Jake Wesley

    Jake Wesley Trainee Access

    Location:
    Peterborough
    That's so simple! Also in what order do I test in? My mind is totally blank and sadly it had to happen just days before my exam
     
  6. Jake Wesley

    Jake Wesley Trainee Access

    Location:
    Peterborough
    Thank you by the way, didn't mean for my response to come across without seeming grateful
     
  7. buzzlightyear

    buzzlightyear Regular EF Member

    Location:
    star command
    when locking off don't forget to put the key in your pocket .
     
    Vortigern and Jake Wesley like this.
  8. buzzlightyear

    buzzlightyear Regular EF Member

    Location:
    star command
    good luck with the exam.
     
    Jake Wesley likes this.
  9. Jake Wesley

    Jake Wesley Trainee Access

    Location:
    Peterborough
    Thank you! Hopefully it goes well
     
  10. buzzlightyear

    buzzlightyear Regular EF Member

    Location:
    star command
    don't let the nerves get the better of you ,and let us know how you got on .
     
    Jake Wesley likes this.
  11. Jake Wesley

    Jake Wesley Trainee Access

    Location:
    Peterborough
    I will definitely let you know. Thank you for the support!!
     
  12. Antony1

    Antony1 EF Member

    Location:
    Bury
    Switch off loads then switch off supply, remove cover from board, install lock off device and sign put the key in your pocket or that's a fail!

    Then 12 point test, if you don't count 12 you have missed 1 and it is a fail

    1- test lamps in proving unit
    2- L1 to earth
    3- L2 to earth
    4- L3 to earth
    5- L1 to neutral
    6- L2 to neutral
    7- L3 to neutral
    8- L1 to L2
    9- L2 to L3
    10- L1 to L3
    11- neutral to earth
    12- test lamps in proving unit
     
    Jake Wesley likes this.
  13. Jake Wesley

    Jake Wesley Trainee Access

    Location:
    Peterborough
    Would these steps be relevant to all circuits?
     
  14. Antony1

    Antony1 EF Member

    Location:
    Bury
    the steps I posted are if your isolating a three phase board at the main isolator, remember to test on the primary side of the isolator where the cable comes in!

    These steps are the same if your isolating a 3 phase circuit and for a single phase circuit, L-N, L-E and E - N test lamps before and after!

    Do you have an on site guide? All the diagrams in there for testing with good pictures
     
    Jake Wesley likes this.
  15. Jay Sparks

    Jay Sparks Trusted Advisor

    Location:
    Bratford
    Don't forget your PPE. Some colleges require you to select appropriate PPE like rubber gloves (marigolds), googles/safety glasses, stand on rubber mat (usually provided) etc. Sometimes it will be a black test box that you test at, not the actual isolater/mcb but the tests as described above are the same.

    Jay
     
    Last edited: Feb 17, 2017
    Jake Wesley likes this.
  16. Jake Wesley

    Jake Wesley Trainee Access

    Location:
    Peterborough
    I'll get all the steps written down to better prepare myself. I do indeed have the OSG so I'll give it a read to see if that helps
     
  17. Jake Wesley

    Jake Wesley Trainee Access

    Location:
    Peterborough
    I was wondering if any specific PPE was required but if so they I will be able to find it at college
     
  18. Pete999

    Pete999 Trusted Advisor

    Location:
    Northampton
    Have you not got any yourself?
     
    Jake Wesley likes this.
  19. Jake Wesley

    Jake Wesley Trainee Access

    Location:
    Peterborough
    I do but do not have any goggles/safety glasses or gloves
     
  20. Richard Burns

    Richard Burns Trusted Advisor

    Location:
    Cambridgeshire
    Pocket Guide 5 gives information on safe isolation.
     
    Jake Wesley likes this.
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