- Location
- Windsor, CO NEC: 2017
- Occupation
- Service Manager
Looking at the diagram below...
View attachment 3114
There is a 480V 100A service disconnect feeding a VFD cabinet with 1.5" LFMC.
At "Point A" there is a concentric knockout.
At "Point B" a hole has been drilled in the cabinet.
There is more room in the VFD cabinet than the service disconnect. The installer puts a bonding bushing in the VFD cabinet on the connector, at point B. He installs a plastic bushing on the service disconnect side, point A.
Legal or illegal?
View attachment 3114
There is a 480V 100A service disconnect feeding a VFD cabinet with 1.5" LFMC.
At "Point A" there is a concentric knockout.
At "Point B" a hole has been drilled in the cabinet.
There is more room in the VFD cabinet than the service disconnect. The installer puts a bonding bushing in the VFD cabinet on the connector, at point B. He installs a plastic bushing on the service disconnect side, point A.
Legal or illegal?