orrin

Hi there.
I have my assessment on the 9th july and was hoping that some of you who have taken the vetassess prac could give me some advice on the individual steps in the following list.
The only work I have done on motors was many years ago and unfortunately I am one of those electricians who has drifted towards domestic wiring!
any information specific to the vetassess prac would be great.
Cheers

Disconnection Process

1. Notify personnel of presence on work site.
2. Personnel to be notified in immediate area that you are to commence disconnection and interruption to supply.
3. Will removal of protective devices affect essential service?
4. Test voltage tester at known ‘LIVE’ source for correct operation before use.
5. Ensure the frame of the equipment in not ‘LIVE’ by testing between frame/chassis and the known earth.
6. Test voltage tester at known ‘LIVE’ source for correct operation after use.
7. Take operational details of appliance e.g. kW and voltage.
8. Take direction of rotation (DOR) of motor (where applicable).
9. Complete details on danger tags e.g. name, date, fault, etc.
10. Affix danger tags to isolation points, e.g. appliance, isolating switch, switchboard etc.
11. Determine location of appropriate protective device.
12. Do not leave exposed LIVE terminals/conductors as switchboard or appliance.
13. Test voltage tester at known ‘LIVE’ source for correct operation before use.
14. Before touching the appliance conductors, test for LIVE.
15. Test between – all conductors & known earth.
16. This test should also include test for LIVE between the protective earthing conductor & the known earth.
17. The appliance conductors must also be tested for LIVE by testing between all conductors.
18. This includes the protective earthing conductor.
19. Test voltage tester for correct operation on known LIVE source after using it.
20. Isolate protective device by applying lock-dog & lock or inserting ‘dummy’ fuse wedge in fuse base.
21. Terminate conductors in approved manner and enclose in junction box.
22. Cable ends must be fully insulated.
23. Affix danger tag to terminated conductors enclosed in junction box.
24. Ensure terminated conductors are protected against mechanical damage.
25. Clean up work area & notify personnel.

Reconnection Process

1. Notify personnel of return to work site.
2. Personnel to be notified in immediate area that you are to commence disconnection and interruption to supply.
3. Will removal of protective devices affect essential service?
4. Ensure the appliance to be reconnected is of the same operational rating e.g. kW amps & voltage etc.
5. Test insulation resistance and continuity tester on both Meg Ohm (500V) and Ohm scale for correct operation.
6. Carry out the insulation resistance test on the appliance.
7. Test between all active & neutral conductors to the earth contact of the appliance.
8. Not containing sheathed heating elements – not less than 1 MegWContaining sheathed heating elements – not less than 0.01MegWBefore touching final sub-circuit conductors, test for LIVE. Test between – all conductors & the known earth.
9. This test also includes testing for LIVE between the protective earthing conductor & the effective earth.
10. The final sub-circuit conductors must also be tested for LIVE by testing between all conductors.
11. This includes the protective earthing conductors.
12. Test voltage tester for correct operation on known LIVE source after using it.
13. Reconnect final sub-circuit wiring to appliance terminals.Carry out continuity test on final sub circuit protective earthing conductor from effective earth to frame of appliance. – this test should be carried out after the circuit conductors have been connected to the equipments terminals and before the power has been restored.
14. Notify personnel of restoration to power.
15. Do not leave exposed LIVE terminals/conductors at switchboard or appliance.
16. Remove lock, lock-dog and switch on circuit breaker or insert correct fuse wedge to restore power.
17. Check appliance for correct operation e.g. DOR. (Direction of Rotation).
18. Clean up work area and notify personnel.

The_Pom_From_Aus

orrin;7707440

before you do anything mate there shall be a power supply reading 230V if you test it, make sure you do this 1st so you know the tester is working correctly

jasonlec

Yep, use the proving unit lots & lots also talk through everything with them.