flengineer
Member
- Location
- Miami, FL
Does anyone know what a grounding mat is? I can't find any reference to it in the NEC. I have equipment specifications that call for a #4/0 EGC from the "building grounding mat" to an equipment room.
I was providing the 4/0 EGC from a ground bus in the Main Electrical Room tied to the grounding electrodes (two ground rods, cwp, foundation steel), but now think this is referring to some a grid of grounding conductors buried beneath/in the slab.
I was providing the 4/0 EGC from a ground bus in the Main Electrical Room tied to the grounding electrodes (two ground rods, cwp, foundation steel), but now think this is referring to some a grid of grounding conductors buried beneath/in the slab.