jar546
CBO
For those that only see cable assemblies such as NM (romex) this really does not apply but for anyone that sees individual conductors run in a raceway such as EMT or PVC conduit, this is always an issue when more than one circuit is run in a single conduit.
(B) Multiple Circuits. Where more than one neutral conductor
associated with different circuits is in an enclosure, grounded
circuit conductors of each circuit shall be identified or
grouped to correspond with the ungrounded circuit conductor(s)
by wire markers, cable ties, or similar means in at least
one location within the enclosure.
Exception No. 1: The requirement for grouping or identifying shall
not apply if the branch-circuit or feeder conductors enter from a
cable or a raceway unique to the circuit that makes the grouping obvious.
Exception No. 2: The requirement for grouping or identifying shall not
apply where branch-circuit conductors pass through a box or conduit
body without a loop as described in 314.16(B)(1) or without a splice or
termination.
Therefore, if you had multiple circuits run inside a conduit that went to a junction box where they (individual circuits) were then distributed to their separate areas, the neutrals and associated ungrounded conductors would have to be separated in both the junction box and panel that they originated in.
Is this something that you routinely enforce?
(B) Multiple Circuits. Where more than one neutral conductor
associated with different circuits is in an enclosure, grounded
circuit conductors of each circuit shall be identified or
grouped to correspond with the ungrounded circuit conductor(s)
by wire markers, cable ties, or similar means in at least
one location within the enclosure.
Exception No. 1: The requirement for grouping or identifying shall
not apply if the branch-circuit or feeder conductors enter from a
cable or a raceway unique to the circuit that makes the grouping obvious.
Exception No. 2: The requirement for grouping or identifying shall not
apply where branch-circuit conductors pass through a box or conduit
body without a loop as described in 314.16(B)(1) or without a splice or
termination.
Therefore, if you had multiple circuits run inside a conduit that went to a junction box where they (individual circuits) were then distributed to their separate areas, the neutrals and associated ungrounded conductors would have to be separated in both the junction box and panel that they originated in.
Is this something that you routinely enforce?