kenaslan
Senior Member
- Location
- Billings MT
I have a 4160V motor with full size EGC back to the MV motor starter. I also have a ground wire from the frame to the buried ground grid. Is this grounding wire to be sized via what table?
I have a 4160V motor with full size EGC back to the MV motor starter. I also have a ground wire from the frame to the buried ground grid. Is this grounding wire to be sized via what table?
Please cite the code section that says that.It is required as it is a C1D2 area
There is nothing in that section that requires the wire from the equipment to the grounding grid that you were asking about sizing.250-100
250.100 Bonding in Hazardous (Classified) Locations Regardless of the voltage of the electrical system, the electrical continuity of non?current-carrying met al parts of equipment, raceways, and other enclosures in any hazardous (classified) location, as defined in 500.5, 505.5, and 506.5, shall be ensured by any of the bonding methods specified in 250.92(B)(2) through (B)(4). One or more of these bonding methods shall be used whether or not equipment grounding conductors of the wire type are installed.