Nec

[Khalid Ahmed]

Is it a code violation to wire a four plex receptacle with 4 seperate circuits and a duplex with 2 seperate circuits?

 

[Buck Parrish]

No,
If you have 277 and 120 in the same box you will need a devider.

 

[augie47]

don't overlook NEC 210.4(B) & 210.7(B)

 

[LarryFine]

Is it a code violation to wire a four plex receptacle with 4 seperate circuits and a duplex with 2 seperate circuits?

Every receptacle on a given yoke must be equipped to be disconnected simultaneously.

If, by "four plex" you mean two duplexes, then each duplex must deenergize simultaneously.