UL 231 PDF

1.1 These requirements cover power outlets, with or without integral mounting posts or pedestals, and power outlet fittings for use in accordance with NFPA 70®, National Electrical Code® (NEC®).

NFPA 70®, National Electrical Code®, and NEC® are registered trademarks of the National Fire Protection Association, Quincy, MA.

1.2 A power outlet covered by these requirements, although not restricted to such use, is intended for use:

a) At outdoor locations such as on farms, at building sites, and the like, where power is required to operate portable, mobile, or temporarily installed equipment;

b) To supply power to a mobile home or a recreational vehicle; and

c) To supply shore power to boats.

1.3 A power outlet may contain:

a) Attachment plug receptacles;

b) Circuit breakers;

c) Fuseholders;

d) Fused switches and facilities for watt-hour meters; and

e) Provisions for field installed circuit breakers or switches and fuses.

1.4 Power outlet fittings covered by these requirements are intended for factory or field assembly into or in conjunction with power outlets designed for such assembly. Fittings may be panels or combination units incorporating receptacles, disconnecting means, overcurrent protection or other devices that have been determined to be equivalent. A separable mounting post or pedestal to which power outlets are to be mounted is also a fitting.

1.5 In addition to or instead of mounting to a post or pedestal fitting as mentioned in 4, a power outlet may be constructed for mounting on and connection to a mounting post or pedestal also designed to be used with other types of distribution equipment.