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T

The Ghost

So I had this question in mock exam, got mine tomorrow, the real one.
The external influence code ACM requires IP rated equipment to
IPX1
IPX4
IP0
IPX2

Answer IPX4 apparently. But I could not find the corresponding external influence and presume it is a typo? I don't want to encounter this tomorrow and flounder around on the basis of a typo.
 
the code AC refers to altitude.
 
Where does the code ACM come from?

I haven't seen that in the book.
 
I’ve got all the literature from my local college. On their website, the FAQ says “can I take notes into the exam?”
The answer:
“Yes. It is an open book exam. You should take a copy of BS7671 17th edition Amendment 1”

The FAQ is a few years out of date then.

I’ve never heard of ACM either.
 
I had this question on my actual 17th amd3 exam, but my tutor had already told us the answer was IPX4, he also believed it was a typo so they told everyone taking the exam the correct answer.
 

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