National Electrical Code Articles and Information

1. [310.10)(E). Yes, that's the only place you can. And there are conditions for that to be permitted.
    

2. [310.10)(F). Ones listed for that use.
    

3. [310.10)(G). Ones listed for that use.
    

4. [310.10)(H)(1). 1/0 or larger.
    

5. [310.10)(H)(1). Exception 1: For control power. Exception 2: Under engineering supervision for existing installations.