MWBC on Delta Service

[LRB]

I am installing several MWBC on a Delta Hi Leg service. Hi leg is B phase and all circuits are between A and C phases. Will my neutral be counted as a CCC? On a 208 Y service I believe it would be due to the 120 degree phase angle.

 

[charlie b]

My answer is that the neutral is not a CCC. The A-N and B-N will be 180 degrees out of phase with each other, and the neutral will only carry the unbalanced current between the A and the C.

 

[JFletcher]

Agree with Charlie. If using 2p breakers between AC, neutral is center point and not a CCC, unless the majority of loads are non-linear.

 

[LRB]

Thank you for the responses. Very few non-linier loads. Mostly for convince outlets.