These requirements cover portable power-distribution equipment intended to distribute power in accordance with the National Electrical Code@ NFPA 70 (NEC). These requirements cover portable power-distribution equipment intended for use in the following locations: a) Carnivals@ circuses@ fairs@ and similar locations in accordance with Article 525 of the NEC; b) Exhibition halls in accordance with Article 518 of the NEC; c) Motion picture and television studios and similar locations in accordance with Article 530 of the NEC; d) Theaters@ audience areas of motion-picture and television studios@ and similar locations in accordance with Article 520 of the NEC; and e) Temporary installations at construction sites in accordance with Article 590 of the NEC. These requirements do not cover portable power-distribution equipment intended to be mounted above or adjacent to the lighting unit it supplies. These requirements cover power-distribution equipment rated 600 volts or less and 1600 amperes maximum. They may be intended for either single- or multi-phase supply.