1. International Protection Rating for any electrical or electronic device aka: the Ingress Protection Rating or the “IP Code” © D. J. McMahon 2014 rev 141125

2. IEC standard 60529: Classifies the degrees of protection against intrusion by objects (including body parts), particulates, and water into a device. Format: IP## Where the first digit ranks the protection against objects or dust and the second digit ranks the protection against water. Higher numbers indicate increasing levels of protection

3. Numeral:Characterization of Ingress Limit: 0 or XNot evaluated 1≥50.0 mm diameter object 2≥12.5 mm diameter object 3≥2.5 mm diameter object 4≥1.0 mm diameter object 5Dust-protected 6Dust-tight First digit of an IP-rating: Particulates

4. Numeral:Characterization of Ingress Limit: 0 or XNot evaluated 1Dripping water: vertical 2Dripping water: 15° tilt 3Spraying water 4Splashing water 5Jetting water 6Powerful jetting water 7Temporary immersion 8Continuous immersion Second digit of an IP-rating: Liquids

5. First digit: IP Rating, first digit: Protection against moving parts and particulates

6. First digit: IP Rating, first digit: Protection against moving parts and particulates

7. Second digit: IP Rating, second digit: Protection against water invasion

8. Second digit: IP Rating, second digit: Protection against water invasion (For water protections 7 and 8, the manufacturer must specify the depth and time of immersion in water.)

9. Example: an electrical receptacle is required by NEMA to be rated IP22, meaning it cannot allow the insertion of fingers or the incursion of water vertically. The first digit, for objects or dust, is not always given. Most medical equipment has a marked IP rating, but usually gives only the second digit for water- protection rating, leaving an X for the first digit. eg:IPx1 for an IV pump orIPx8 for a foot pedal used in surgery

14. When reassembling a device, be sure to restore the seals, gaskets, O-rings, etc that provide the IP protection against water invasion.

15. IP ratings for various AEDs