NEC 2008 ROP 2-10, 210.4: multi-wire circuit common disconnect

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Here's another change I like. This change to 210.4 means that the
requirement to disconnect all ungrounded conductors on the same yoke
is now expanded to have that requirement for all ungrounded conductors
on the same multiwire branch circuit.

ROP 2-10 (page 61)
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Panel Meeting Action: Accept in Principle

Revise the last sentence of 210.4(A) in the present code to read:
All conductors of a multiwire branch circuit shall originate from
the same panelboard or similar distribution equipment.

Revise 210.4(B) in the present code to read: Disconnecting Means.
Each multiwire branch circuit shall be provided with a means that
will simultaneously disconnect all ungrounded conductors at the
point where the branch circuit originates.

Panel Statement: The panel has accepted the submitters recommendation,
but has revised the text in 210.4(A) and (B) to accomplish the intent
of the submitter.
===========================================================================

So 2 pole (or 3 pole where applicable) breakers on those shared neutral
circuits, even if each pole only feeds outlets independently.

Download PDFs:

Report On Proposals:
http://www.nfpa.org/assets/files/PDF/ROP/NEC2008ROP.pdf

Draft 2008 code:
http://www.nfpa.org/assets/files/PDF/necdigest/NEC2008ROPDraft.pdf