For cord-and-plug connected utilization equipment, as permitted in 400.7(A)(6) and 400.7(B) of the 2005 NEC, which of the following conditions doesn't require the use of an attachment plug energized from a receptacle outlet?
A) A vertical branch circuit cable drop made from a junction box that was properly sized and supported
B) A vertical branch circuit cable drop made from a bus plug connected to a busway, meeting the requirements of 368.56(B). The attachment cap was omitted, and the equipment was wired directly
C) Cord-and-plug connected utilization equipment supplied from a receptacle outlet, in which the utilization cord cap was plugged into a wall outlet of the proper configuration and rating
D) A vertical branch circuit cable drop made from a bus plug connected to a busway. The cable was installed with two vertical and horizontal runs in this one cable installation; in other words, the cable wasn't just vertical
The general rule in 400.7(B) requires cord-and-plug connected utilization equipment [400.7(A)(6)] to be supplied from a receptacle outlet through an attachment cap. An exception references 368.56, which does allow direct wiring without an attachment cap in 368.56(C).
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