International Protection (IP) rating system defined by International Standard IEC 60529, which classifies degrees of protection for electrical devices against intrusion by elements present in the space, such as water, dust and accidental contact by body parts such as hands and fingers. The minimum rating contains two numbers, the first describing the degree of protection against solid objects and the second against ingress of water. Additional letters may be used to identify other protections.

Original Chapter Source: Luminaires
Provided By: Craig DiLouie