HVAC 313A Challenge

[Pindu]

hi
I am planning to challenge 313A. I have been working in this line from several years. I have 1.5 years exp in commercial Refrigeration in Canada which I got exp letter from my current employer and rest of i am getting from my home country employer

I have question about CAP document. is it mandatory to send if yes how to fill and who can sign this

please help who had gone through this path

thanks

[tenletters]

I've been told they ask a lot of ammonia questions.