400.12 Uses Not Permitted. Unless specifically permitted in 400.10, flexible cables, flexible cord sets, and power supply
cords shall not be used for the following:
(1) As a substitute for the fixed wiring of a structure
(2) Where run through holes in walls, structural ceilings, suspended ceilings, dropped ceilings, or floors
(3) Where run through doorways, windows, or similar openings
(4) Where attached to building surfaces
Exception to (4): Flexible cord and flexible cable shall be permitted to be
attached to building surfaces in accordance with 368.56(B) .
(5) Where concealed by walls, floors, or ceilings or located above suspended or dropped ceilings
Exception to (5): Flexible cord and flexible cable shall be permitted if
contained within an enclosure for use in Other Spaces Used for Envi‐
ronmental Air as permitted by 300.22(C)(3).
(6) Where installed in raceways, except as otherwise permitted in this Code
(7) Where subject to physical damage
