Does IP have relationship with Ex?

I say No, but why I need to write down this novel because I found 2 cases during my last project that people while discussing about IP then they grabbed and referred to Ex Certificate. Can we discuss IP certificate based on Ex Certificate? I still say No. It refers to different code, it refers to different purpose. While I am writing this article I am searching and learning what I believe why it should has no relation but only complementary. However If at the end of my searching I found the conclusion differently (means example let say Zone 1 automatically shall have IP66) , I will revise my novel accordingly. 

-to be continued-

 

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