Now that I think about it, standard design is MWBC, and plenty of PC's are connected to these circuits and yes it only has shown up in the transformer neutral.No, I specifically asked about neutral conductors.
But the reality is it hasn't, this is a highly over exaggerated problem
And I agree that the biggest problem (IMO) with additive harmonics is in transformers.
I'm not afraid of MWBC and have been specifying them all my career. The cost savings in copper and labor is real, and customers should benefit from this reality. But 1pole breakers have always been acceptable.Why, do you not care about efficiency in wiring?
I just find it ammusing that people are so scared of MWBC's that they will grasp for any argument to defend their stance.:smile:
With the new NEC requirement that multipole CB's be used for MWBC, I'm not for common tripping of 2 additional circuits when only 1 is the problem. Nor am I for turning off 3 circuits when only 1 is troublesome.
Installations needing to meet the NEC 2008, MWBC are required to be connected to CB with a common trip. Isn't that what all the hub bub is all about.BTW, the breaker does not have to a common trip.