First while the words "identified hub" are highlighted as a change in the 2014 code, it is not really a change. The following is the change from 2011 to 2014.What is a "identified hub"?
blue = new text, red = deleted textAt the luminaire end, the conduit(s) shall be threaded wrench tight into the box or wiring enclosure, or into identified hubs identified for the purpose.
A box is a box, it is not a conduit body, so even a one gang box cannot be supported by a single conduit. It would also be questionable as if a bell box has a conduit "hub". Is a tapped enclosure wall the same as a conduit hub?The exception ,no. 1 allowing 1 RMC or IMC for support of a conduit body,,,means a 2g wp bell box is not a conduit body?