hi all,
This thread never dies, but plese don’t starve it to death.post whatever info u havekeep it live.Im back to forum after my vetassess test.my test was on 06th of Mar.’09 at Mumbai,India.the assessor was frm Batman.. TAFE.he was very friendly to all.other than electrician there were assessment for Airconditioning too.sparkies test ran for 2 days.there were more than 12 candidates.only six were allowed at a time.
The tasks were wiring 2X ckt. (he said mainly they look at your wiring),DoL starter assembling, disconnection and re-connection process, written exam(18 questions).
My assessment went on like this..
0800hrs-sign up-intoduction, assessor expained about the task to be compleated.the tasks were..
Installing aTwo way light point and power point on the wooden board, the dis.board was already installed and RCCB, MCB’s were already mounted on it.there were one main MCB of 80Amps, 2 RCCB’s of 40Amp’s each, three 10Amp’s single pole MCB’s and three 20 Amps single pole MCB’s, told us to select the apropriate protctive devices.(20 amps for power 10 Amp’s for lighting.)we were given HDPE pipes as conduit.we had to install according to the dimesions in the drawing.the earth conductor was left disconnected in the incoming DB(delibrately), so we had to connect it.we were given 2 and half hrs to cmplete the task.after completion he checked the power point with a Digital multi Meter.check was with respect to earth and Live.then between the Nutral and earth, then neutral to Live. I did it in 3 hrs. All tools were given including cordless dril cum screw driver.then he asked me to open the cover of the DB to check for the correct colour code of wires and earth termination.all were correct.
My advice is do not forget to connect the earth conductor in the incoming DB.
Then the discon.process.there was a lamp glowing and a 2000 W heater was running.i was told to switch off the heater’s MCB with out opening the DB cover and sans switching off the light.i found several 20Amps MCBs on the DB but i swthed off the right one at firt attempt. Then i ask for a MCB lock off device to lock the MCB.i was the only guy wo asked or a locking device because we dont use such a locking device in India.we lock it by inserting a metalic pin .promptly he brought a mcb locking device and locked it.then i diconnected the heater, checkd for any live in the diconnected conductor with respectd to earth availabale in the DB.then he asked me ho to check it with a DMM.i shown him the continuty and resistance of it by swithing on the equip. Then check the insulatin with megger note the readings if its ok re-connect it and remove the lock, switch on.
The DoL assembly with remote operation func.
Everything was assembled on a board like contactor, push bottons, aux contact..etc only i had to plugin the loops.all points were marked.so it was so easy for me.it took only 3 minutes to assemble.some guys struggled for hours to complete( not boasting).as im an idustrial sparkie it was easy for me.it was an 24 volts ac ckt.contactor was of 24 volts. So was the 3 phase induction motor.
The Written exam.
There were 18 questions i could anwer all the 18 correctly.i remember a few as follows..
A 10 ohm and a 5 ohm resistors con. In parllell and given 9 volts what’ll be th current.
If th two inductors of 0.2379 XL and 0.2592 XL is in series what’ll be the effective XL?
If voltage doubles in a resistive ckt what happens to Power?
If the voltage reduced to half in a resistive ckt what happens to Power?
Three 32kw 230 vots heaters are connected in star and given 400 three phase volts wat’ll be the power?
A question about Impedence
transformation ratio-primary voltage 60, sec.voltage 20, primary turns 120 whats the sec. turns?
If power factor reduces what happens to current ........etc.
Im thankfull to James and other sparkies for their enlighting posts about vetassess.
I signed off at 1400 hrs.though wiring was little time taking for me ,i was the first guy to complete the assessment as i could save a lot of time in assembly of starter.
At last i asked the assessor about the’ A’ lisencing and duration of TAFE course.he said i need to complete a 10 Night course to sit in licensing exam.when i pointed out about 4 years full time course, he said its not correct.i dont know how far its correct.
I hope that the outcome ‘ll be positive.it take 10 days to come.
ESTHAPAN.
