mark thomas
Member
I installed a VFD that trips a CAFCI every time the VFD starts the motor. I've read/heard about problems with VFDs and GFCI, AFCI, CAFCI, but never seen any definitive statements.
Note the VFD is not on the CACFI circuit. The panel with the CAFCI also has a breaker that feeds a subpanel, and that subpanel has a circuit with the VFD on it. The VFD circuit is 220v.
Should I suspect and investigate a wiring problem, or just chalk this up to "issues" with VFDs? Remove the CAFCI? Any other solutions? I am going to try swapping the VFD with another brand/model and see if that makes any difference.
Note the VFD is not on the CACFI circuit. The panel with the CAFCI also has a breaker that feeds a subpanel, and that subpanel has a circuit with the VFD on it. The VFD circuit is 220v.
Should I suspect and investigate a wiring problem, or just chalk this up to "issues" with VFDs? Remove the CAFCI? Any other solutions? I am going to try swapping the VFD with another brand/model and see if that makes any difference.