I;ve seen Chase nipples put into the top of Mcc's (in wireways only) then several Tray cables run into them . I told the conmtractor I didn't feel this was a approved termintation method. I;ve seen Nipples from Mcc's up to the tray (lest them 24inches . But never Chase nipples?? My concern was even thought the nipples open into the wireways it leaves an unprotected opening.YER opinions Please.
YoopersUp

I have seen what you describe. The wiring trough area of MCC's (for load conductors) does not provide direct access to any energized parts, I would be more concerned with securing the TC.

The drop from the tray to the Mcc's is only about 24-36 inches Max.what about 392.8(c)

Take a look at 312.5(C) and 314.17(B).

But does a MCC come into play in that section??

In my opinion, between Articles 312 and 314, all electrical enclosures are covered.

The Scope sections 312.1 & 314.1 says otherwise.

I think that I can stretch the scope of 314 to cover just about any electrical enclosure including MCCs.

314 No way. 312 you'd have to use 90.4 and I really think you'd be streaching it. Which one is it a Cabinet(see definitions) Cut out box (No), Meter Socket encloser (No).
So then a MCC must be a Cabinet .
Cabinet (an encloser that is designed for either surface mounting or flush mounting and is provided with a frame ,mat, or trim in which a swinging door or doors are or can be hung. Doesn;t sound like a MCC does it??

The part of the MCC that you run the cables into is used as a pull box.