MC cable bundled together

[emahler]

All the info can be found 310.15(B)(4) (a), (b) & (c).

If you use only two legs of a Wye system in a MWBC the neutral is always a current carrying conductor.

If you use all three legs of a Wye system in a MWBC the neutral is not a current carrying conductor unless the major portion of the load is non-linear.

thank you bob...i will make sure to keep that information on hand. we don't run into the situation to often, but definitely good to know.