The install on the AM2 is safely Isolated. We are told
we cant measure the ZS under live testing we have to carry out it isolated and use the calculation Zs=Ze+ (R1+R2) etc...
How would you bridge the contactor though? A bit of scrap cable?
On the AM2 exam there is a 4 core SWA from the 3...
Hello all Sparkies,
Ive got a question how would you measure Zs on the installation at the origin? Even though the install is “dead”.
How do you test the motor circuit as in IR and Zs etc? Would you test the 3 phase IR from the supply to the contactor then do the same from the load side to the...
So I wont loose any marks if the metal trunking or cable tray is not bonded. I thought though thay any exposed metal part than can become live under fault conditions and easy touched is supposed to be bonded? Or im I wrong?
Hi everyone,
I am sitting my AM2 exam a week today and was wondering if the metal trunking, cable tray etc needs bonded back to the MET in the board?
Will you fail if its not bonded or will it be a minor?
Anyone got any ideas?
Thanks.
I know this might sound like a silly question. But, does anyone know how you label the circuits in the 3 phase and neutral consumer unit as in 3L3 or 1L3 etc and how do you terminate the conductors to there terminals? I have never worked on a three phase board so if anyone has any links for...
I understand they watch over the safe isolation procedure totally understandable as its very cruical. Ive currently got the 2365 level 2 and level 3 diploma just need this am2 to achieve my nvq/2357. So hoping I pass first time.
Thats great thanks alot! Just hope the faults I get on the heating system are easy and not to complicated! Still cant believe my exam is a week on Monday .
Thatsgre
Thats great thanks for replying im most nervous about the fault finding on the heating system. Just cant wrap my head around the S plan.
How did you do on the inspection and process part? I got told the assessor doesnt watch over you the whole time but, watched you do a R1+R2...
As in operate all intermediate and two way switching sequences? Testing all strappers.
Also forgot to ask how did you set your thermal overload for your motor circuit?
I got told you get all the working out etc in a specification booklet?
Thanks for replying. So I would lock off the isolator first then isolate the board as well or simply turn off the isolator for the swa socket then isolate the 3 phase mcb?
Also, did you only install a 32amp RCBO type B on the ring circuit. I keep getting the feeling I should install a rcd or...
Does anyone know how you would isolate say the 3 phase motor circuit as this will be on the DOL started circuit and how would you isolate the SWA 3 phase socketoutlet with the isolator? As in would youlock off the isolator then the consumer unit? Etc
These are things im wondering for my am2 exam
So I take it I would do the same process for mu exam as in with the motor circuit? Just throws me when theres the DOL atartee in circuit. Ill have a look at the link now thanks.
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc