Coachmike
Senior Member
- Location
- Morris County, NJ
- Occupation
- Electrical Contractor
Card dealership is experiencing an intermittent power dip on the B phase of a 3 phase 480 volt 800 amp service. This phase loss is causing an HVAC unit's VFD to trip and show an overvoltage fault. Of course, the utility is saying it is not their issue and neighbors do not have the problem. Any insight is appreciated. TIA ![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)