I done a refreshers course just before my am2 exam but, they just told us to watch videos on the tester. Which I did do before the exam and in the exam I had to ask again for clarifcation on how the megger tester works etc.
I think of the top of my head its a Megger MFT1730 or 1740. Ive been explain how to use it but, kind of forgot what them settings where as in the workplace I use a different tester with different settings alltogether.
So since there is a RCD in the workshop board. But, on the am2 board its a main isolator so I would have to carry out the test on 3 test lead LOW so I dont trip the RCD? When doing Ze, Zs and Pfc tests etc...
But howcome, wont there be no current down the neutral, this causing a imbalance and tripping? Just dont want to do my live tests resit and mess it up.
How would you measure pfc on that tester then?
But surely if your testing line to earth of the Ze test wont this still trip the rcd due to the imbalance? So surely you would do a 3 lead test?
As in for pfc what setting would you go on and you can do a 2 lead low test on that as well? But, again wont this trip the rcd?
Some people say do...
So Im i right it thinking that since the board has a 3 phase Rcd I would have to carry out Ze, Zs, PfC test on a 3 lead low test or not? Im honestly baffled like. Some people say 3 lead, some say 2 lead.
But when I done 2 lead Hi test on Ze it tripped the rcd in the workshop. So, if I do it in...
Ah right Ive watched his videos hes good to watch.
So since the workshop has a rcd would that mean I would do all tests on a low setting/ 3 lead test? As in pfc, ze and zs?
So doing a ze and zs test you can use a 2 lead low test? So it doesnt trip the rcd obviously. Then a 3 lead no trip test to measure pscc and pefc? That right or wrong?
The x2 rule of thumb method is because the fault current that could be generated could occur between two phases. As some test...
I believe the workshop for the am2 exam has a 3 phase RCD protecting the workshop. So you would test everything on 2 lead low? Both pfc and ze/zs testing?
There is only two outlets which have 3 phase and thats a commando outlet and a motor outlet point. Rest are single phase outlets i.e ring...
So do you measure PFC on high setting on the test meter but, would this trip the rcd in the main board? As this exam is carried out in a workshop environment?
Also do you just test live polarity on the incoming tail side of the 3 phase DB?
Hi everyone,
My resit on my AM2 live testing is monday coming and I need some help/ gudiance on anyone who has sat theres to help me.
Confim polarity by measuring the voltage between each phase to N and each phase to earth, then phase to phase to ensure I am getting 230/400V etc.
So then, Ze...
Hi All,
Ive just got my results through and I failed my first attempt of AM2 exam on the live testing of inspection and testing. I passed everything else just the live testing simply all because I ran out of time that was allowed for the inspection and testing. So Im gonna try and get re booked...
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