strain relief

[buck33k]

314.23(H)(1) A box shall be supported from a multiconductor cord in an approved manner that protects the conductors against strain, such as a strain-relief connector threaded into a box with a hub.
Is this saying the box must have a threaded hub or given only as an example of one configuration?
400.10 also addresses strain-relief.

 

[bphgravity]

Re: strain relief

I think the terms, "such as" qualifies as just a suggestion or example of one method, however I believe there are several listed and approved methods for accomplishing the same requirment.