frank_n
Senior Member
- Location
- Central NJ
I have to ground the computer racks in 6 different computer rooms. I've read 645.15 which requires that the racks to be grounded per Article 250.
The racks are powered by dedicated 20 amp circuits. According to Table 250.122 I should use #12 copper. (The manufacturer calls for #10).
What I cannot find is where to connect the grounding conductor to. Should I connect it to the service? It is hundreds of feet away. Can I connect to building steel? Can I connect to a sub-panel? a water pipe? I cannot find it in the NEC.
Any advise?
Frank
The racks are powered by dedicated 20 amp circuits. According to Table 250.122 I should use #12 copper. (The manufacturer calls for #10).
What I cannot find is where to connect the grounding conductor to. Should I connect it to the service? It is hundreds of feet away. Can I connect to building steel? Can I connect to a sub-panel? a water pipe? I cannot find it in the NEC.
Any advise?
Frank