Changes attempt to clarify the restriction on cord use above a suspended ceiling; but, unfortunately, the attempt failed. 400.12 Uses Not Permitted Unless specifically permitted in 400.10, flexible cords sets (extension cords) and power-supply cords aren’t permitted for the following: (1) Flexible cords sets (extension cords) and power-supply cords aren’t permitted to be a substitute for the fixed wiring of a structure. (2) Flexible cords sets (extension cords) and ...

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