AM2, how stringent is the marking criteria?

[Abajt001]

Hi, I’ve recently completed my AM2s exam and am now awaiting results. I have a question regarding the testing & inspection section, the final page of the paperwork for it was a ‘verification page’ one of the questions on there was ‘what is the maximum operation time for an RCD at 1x the operating current’ soon after leaving the exam I looked at my notes and really really stupidly realised I read the question wrong and put 40ms rather than 300ms…my question is would I fail the testing and inspection section solely based on that wrong answer..I feel the rest of the section went fine.

 

[buzzlightyear]

What is the maximum allowable tripping time? A common misconception is that RCDs must trip in 30 ms. In fact, an RCD when tested at its rated sensitivity must trip in 300 ms. When tested at five times, ie, 150 mA for a 30 mA device, it should trip in 40 ms.

 

[John smith 95]

Hi, does any one know how many faults you need to find to pass the AM2s fault finding section? Thanks a lot.