MWBC - Printable version

Multiwire Branch Circuit. Usually used to describe a scheme in which the neutral wire is "shared" by two or three circuits. Often overlooked is NEC 210.4(B):

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.

MWBC Printable version