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Automated Lighting, 2nd Edition by Richard Cadena

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APPENDIX A: IP Ratings

 

A weatherized fixture or housing intended to be used in the elements should be IP rated. The International Protection Code, or IP Code, is a rating for “degrees of protection provided by enclosures” as published by the Commission Electrotechnique Internationale (IEC) in 1989. The international standard describes how well an enclosure protects against the ingress of foreign objects like dust, dirt, and moisture.

An IP rating comprises a two-digit code with optional suffixes. It's always preceded by the code letters “IP,” which stands for international protection.

The two-digit numeric indicators are coded as follows.

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