UL 1640

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:

• Carnivals, circuses, fairs, and similar locations in accordance with Article 525 of the NEC;
• Exhibition halls in accordance with Article 518 of the NEC;
• .Motion picture and television studios and similar locations in accordance with Article 530 of the NEC;
• .Theaters, audience areas of motion-picture and television studios, and similar locations in accordance with Article 520 of the NEC; and
• Construction sites in accordance with Article 305 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 1200 amperes maximum. They may be intended for either single- or multi-phase supply.