OSHA 1926 subpart K would apply, The wire would need to be 12AWG and the connectors on the ends would need to be rated for use in that application.
The practice of making up a 2g box on the end would be unacceptable.


Bryan L. Key
Safety Inspector/Trainer
Terry's Electric Inc.
An Xcelecom Company
600 N. Thacker Ave., Suite A
Kissimmee, Florida 34741