210.4 Multiwire Branch Circuits.
[FONT="](C) Line-to-Neutral Loads.[/FONT]
[FONT="]Multiwire branch circuits shall supply only line-to-neutral loads.[/FONT]
[FONT="]Informational Note: See 300.13(B) for continuity of grounded conductor on multiwire circuits.[/FONT]
[FONT="]Exception No. 1: A multiwire branch circuit that supplies only one utilization equipment.[/FONT]
[FONT="]Exception No. 2: Where all ungrounded conductors of the multiwire branch circuit are opened simultaneously by the branch-circuit overcurrent device.[/FONT]