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