Although I have never experienced it myself, I have heard of situations where the conductors vibrate at motor startup.
How did you fix them?Same here. I worked at Soldier Field on the heat trace and we had a few that would slap the conductors in the pipe AUDIBLY. We fixed those, but every once in a while they would slam once and be done after that.
thanks, my puzzle is that i was expecting like railrodas, any vibration due to conductor to be caaried to ends either at the panel end or at splice can but none was transmitting.Although I have never experienced it myself, I have heard of situations where the conductors vibrate at motor startup.
Is this a snapping noise associated with conductors moving apart due to high currents and the resulting magnetic forces?
Or is this a vibration?
Vibration can be a result of harmonic distortion from the motor starter. A manufactures supplied in line filter can resolve this issue. Harmonic currents are very high during start up. I posted a wave form snap shot of this last week.