IP Code The IP Code (or International Protection Rating, sometimes also interpreted as Ingress Protection Rating*) consists of the letters IP followed by two digits and an optional letter. As defined in international standard IEC 60529, it classifies the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), ほこり, accidental contact, and water in electrical enclosures. The standard aims to provide users more detailed information than vague marketing terms such as waterproof. The digits (characteristic numerals) indicate conformity with the conditions summarized in the tables below. 例えば, an electrical socket rated IP22 is protected against insertion of fingers and will not be damaged or become unsafe during a specified test in which it is exposed to vertically or nearly vertically dripping water. IP22 or 2X are typical minimum requirements for the design of electrical accessories for indoor use.   *Explanation of the letters IP is given in IEC 60529 (Ed. 2.1), clause 4.1     Sample IP Rating IP – 6 8 First Digit: Solids Second Digit: Liquids First Digit: Solids The first digit indicates the level of protection that the enclosure provides against access to hazardous parts (例えば, electrical conductors, moving parts) and the ingress of solid foreign objects.   Level Object size protected against Effective against 0 Not protected No protection against contact and ingress of objects 1 >50mm Any large surface of the body, such as the back of the hand, but no protection against deliberate contact with a body part. 2 […]