wiring system and
utilization equipment not permanently secured to the
building structure. The cord shall be visible for its entire
length and shall not be subject to strain or physical
damage. Exception: Listed electric-discharge luminaires

that comply with 410.62(C) shall be permitted with

conductors smaller than 12 AWG.

(4) Busways. Busways shall be listed continuous plug-in type containing factory mounted, bare or insulated conductors, which shall be copper or aluminum bars, rods, or tubes. The busway shall be grounded and provided with an equipment ground busbar equivalent in size to the ungrounded busbar. The busway shall be rated nominal 600 volts, 20, 30, or 40 amperes. Busways shall be installed in accordance with 368.12,

368.17(D) and 368.30.

(B) Marking. Each section shall be marked to identify the type of cable, flexible cord, or conduit.

Receptacles and Connectors. Receptacles and connec- tors shall be of the locking type, uniquely polarized and identified for the purpose, and shall be part of a listed assembly for the appropriate system. All connector openings shall be designed to prevent inadvertent contact with live parts or capped to effectively close the connector openings.

(D) Other Component Parts. Other component parts shall be listed for the appropriate system.

(B) 604.7 Installation. Manufactured wiring systems shall be secured and supported in accordance with the applicable cable or conduit article for the cable or conduit type employed.