Reno:
FRom the '11 NEC....."(D) Grouping. The ungrounded and grounded circuit conductors of each multiwire branch circuit shall be grouped by cable ties or similar means in at least one location within the panelboard or other point of origination.
Exception: The requirement for grouping shall not apply if
the circuit enters from a cable or raceway unique to the
circuit that makes the grouping obvious."
Now, with the exception, some opinions are that a xx/3 NM qualifies for the exception. Or, one tye-wrap per MWBC is not that big of a deal is it??
