ANSI C136.25:2013

This standard details the requirements for ingress protection of luminaires in roadway and area lighting equipment, installed for their intended use and specified by end user. While these requirements are suitable for most types of lighting equipment, it should not be assumed that all the listed degrees of protection are applicable to a particular type of equipment. The manufacturer of the equipment should be consulted to determine the degrees of protection available. The adoption of this standard should promote uniform methods of describing the protection provided by the lighting equipment (luminaire) enclosure.