When more than one neutral conductor from different circuits is in an enclosure, the grounded conductors must be identified or grouped to correspond with their ungrounded conductors. Under what condition does this requirement NOT apply?

• When all conductors are #12 AWG or larger.
• For circuits operating at 480 volts or higher.
• If the branch-circuit or feeder conductors enter from a cable or raceway unique to the circuit that makes the grouping obvious.
• When the enclosure is located outdoors.