AM2 assessment

[Mark.W]

Hi peeps,

I recently sat my AM2 and have been told that I did not meet the required standard on 2 sections.

Can someone please explain how to safely isolate the DOL starter. What I did was isolate and lock off the MCb, selected the voltage indicator checked it was working on a proving unit. I then tested L1-L2, L1-L3, L2-L3, L1-E, L2-E and L3-E. There was no N at the motor! I then rechecked the voltage indicator on the proving unit.

I also failed on the installation of lighting circuit, but I'm sure it was fine, it tested out fine and was fully operational at all 3 switches. I took my supply to the light fitting then the PL and SL to the first switch which was connected to the strappers. I linked the commons in the intermediate switch. Not sure what I could have got wrong!

The last thing I failed on was the installation of the swa to the 3ph socket? I terminated the gland either end ran a fly lead from the gland in the DB to MET, and a fly lead to the 3ph socket from the isolator via the earth screw on the isolator cover, all tests were good.

Please can someone she some light on what I could have done wrong?


Many thanks

 

[Brightspark2]

Its early, I hope that makes sense.

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[Mark.W]

Hi Brightspark2

That actually makes perfect sense.

Thank You


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[smiley125]

Or lock it off at the isolator that supplies the motor from the starter. But the above is also correct.

 

[Pete999]

Hi peeps,

I recently sat my AM2 and have been told that I did not meet the required standard on 2 sections.

Can someone please explain how to safely isolate the DOL starter. What I did was isolate and lock off the MCb, selected the voltage indicator checked it was working on a proving unit. I then tested L1-L2, L1-L3, L2-L3, L1-E, L2-E and L3-E. There was no N at the motor! I then rechecked the voltage indicator on the proving unit.

I also failed on the installation of lighting circuit, but I'm sure it was fine, it tested out fine and was fully operational at all 3 switches. I took my supply to the light fitting then the PL and SL to the first switch which was connected to the strappers. I linked the commons in the intermediate switch. Not sure what I could have got wrong!

The last thing I failed on was the installation of the swa to the 3ph socket? I terminated the gland either end ran a fly lead from the gland in the DB to MET, and a fly lead to the 3ph socket from the isolator via the earth screw on the isolator cover, all tests were good.

Please can someone she some light on what I could have done wrong?


Many thanks

mediate
May be Me or You but you say you linked the commons at the intermediate, not sure what you mean?

 

[Mark.W]

I linked the brown conductors at the intermediate switch (in a choc block) and put the strappers into L1 and L2


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[spary]

Yeah I did ask for permission! Just wondering if it's because I never switched the rotary switch on on the DOL brfore testing at the motor.


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testing at the motor is an instant fail, removing the terminal box lid should always be done AFTER proving dead

 

[Pete999]

I linked the brown conductors at the intermediate switch (in a choc block) and put the strappers into L1 and L2


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Ah with you now, it's a sickener when you fail an exam, good luck next time

 

[Dobes_88]

Sat my AM2 a month or so ago at SETA (Southampton), with regards to your lighting circuit its shown on the spec I had that you require a neutral at every location.

If you're saying you didn't sleeve the common at the intermediate this is probably the reason for failing.

 

[Dobes_88]

I was asked to perform safe isolation on the lighting circuit rather than motor, on the "pre AM2" course I went on they were very specific as to where to measure from - I had to measure at the ceiling rose itself rather than the DB!

 

[Mark.W]

I had to do safe isolation on lighting, DOL and entire DB.


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[rich.250]

One of my lads failed his AM2 first time because he didn't follow the lighting drawing.
Which wanted the feed ran all the way round to switch 3, he just wired it shortest route.....
If you took the feed to the light and the course is still the same I would say that was the main issue.


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[ojchurch]

I agree with others above, I've been informed by my last apprentice that sat the AM2 a couple of weeks ago, spec says neutral required at all switches. Also I assume you had to wire it in T&E/3c&E, therefore sleeving will be required.

 

[rolyberkin]

My training provider does an AM2 refresh day prior to taking the exam, this kind of input would appear to be invaluable as they will no doubt cover the most common points of failure and give you hints and tips.

 

[ojchurch]

Yes we do a refresh course ourselves. Unfortunately we didn't get a heads up about the change. Luckily the two guys who went through without being aware of this read the spec carefully and passed. I can imagine it would be easy to miss something like that under exam conditions. I do always stress reading the spec carefully in case of changes. I'll be informing all my other apprentices.

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[Craig2022]

I am to do my AM2 in a couple of months. Does anybody have any good information that can help me prepare for this?

My whole apprenticeship has been spent in new house builds, I have not done any motors, single cores, intermediate switching, swa of such.

My college assessor believes the refresher course before will somehow have me prepared, I feel scepticle about the whole idea that 1 day course can give me all the stuff ill need to pass.

Any information would be greatful.